./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-nested-sll-twice.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-twice.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 f6ffaa15235a1424658c74c69505398b6d7973f6f82933a9f22a2b097e3c0057 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:39:18,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:39:18,308 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-17 00:39:18,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:39:18,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:39:18,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:39:18,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:39:18,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:39:18,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:39:18,344 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:39:18,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:39:18,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:39:18,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:39:18,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:39:18,347 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:39:18,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:39:18,348 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:39:18,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:39:18,348 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:39:18,349 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:39:18,349 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:39:18,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:39:18,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:39:18,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:39:18,352 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:39:18,352 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:39:18,353 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:39:18,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:39:18,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:39:18,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:39:18,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:39:18,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:39:18,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:39:18,358 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:39:18,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:39:18,359 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:39:18,359 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:39:18,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:39:18,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:39:18,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6ffaa15235a1424658c74c69505398b6d7973f6f82933a9f22a2b097e3c0057 [2024-11-17 00:39:18,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:39:18,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:39:18,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:39:18,602 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:39:18,602 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:39:18,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-nested-sll-twice.i [2024-11-17 00:39:19,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:39:20,101 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:39:20,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-nested-sll-twice.i [2024-11-17 00:39:20,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06a608f4/61052a1d64a4454ea5c80a42c408338f/FLAG4aa9af13f [2024-11-17 00:39:20,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06a608f4/61052a1d64a4454ea5c80a42c408338f [2024-11-17 00:39:20,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:39:20,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:39:20,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:39:20,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:39:20,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:39:20,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:20,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bdd40f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20, skipping insertion in model container [2024-11-17 00:39:20,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:20,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:39:20,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:39:20,842 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:39:20,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:39:20,913 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:39:20,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20 WrapperNode [2024-11-17 00:39:20,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:39:20,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:39:20,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:39:20,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:39:20,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:20,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:20,958 INFO L138 Inliner]: procedures = 122, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2024-11-17 00:39:20,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:39:20,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:39:20,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:39:20,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:39:20,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:20,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:20,981 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:21,011 INFO L175 MemorySlicer]: Split 22 memory accesses to 1 slices as follows [22]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 10 writes are split as follows [10]. [2024-11-17 00:39:21,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:21,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:21,021 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:21,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:21,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:21,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:21,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:39:21,029 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:39:21,029 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:39:21,029 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:39:21,030 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (1/1) ... [2024-11-17 00:39:21,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:39:21,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:21,065 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 00:39:21,069 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 00:39:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure loop_internal [2024-11-17 00:39:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure loop_internal [2024-11-17 00:39:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-17 00:39:21,120 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-17 00:39:21,120 INFO L130 BoogieDeclarations]: Found specification of procedure create_internal [2024-11-17 00:39:21,121 INFO L138 BoogieDeclarations]: Found implementation of procedure create_internal [2024-11-17 00:39:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-17 00:39:21,121 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-17 00:39:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:39:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 00:39:21,121 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_internal [2024-11-17 00:39:21,121 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_internal [2024-11-17 00:39:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 00:39:21,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:39:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:39:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:39:21,242 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:39:21,244 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:39:21,597 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2024-11-17 00:39:21,597 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:39:21,613 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:39:21,613 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:39:21,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:39:21 BoogieIcfgContainer [2024-11-17 00:39:21,614 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:39:21,617 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:39:21,617 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:39:21,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:39:21,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:39:20" (1/3) ... [2024-11-17 00:39:21,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510b28af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:39:21, skipping insertion in model container [2024-11-17 00:39:21,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:20" (2/3) ... [2024-11-17 00:39:21,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510b28af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:39:21, skipping insertion in model container [2024-11-17 00:39:21,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:39:21" (3/3) ... [2024-11-17 00:39:21,623 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-nested-sll-twice.i [2024-11-17 00:39:21,638 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:39:21,639 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 51 error locations. [2024-11-17 00:39:21,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:39:21,695 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;@6a55fe94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:39:21,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-11-17 00:39:21,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 133 states have internal predecessors, (145), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-17 00:39:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:39:21,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:21,707 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:39:21,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:21,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash 140307599, now seen corresponding path program 1 times [2024-11-17 00:39:21,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:21,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152451863] [2024-11-17 00:39:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:21,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:21,900 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 00:39:21,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:21,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152451863] [2024-11-17 00:39:21,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152451863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:21,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:21,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:39:21,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666000473] [2024-11-17 00:39:21,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:21,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:39:21,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:21,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:39:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:39:21,950 INFO L87 Difference]: Start difference. First operand has 151 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 133 states have internal predecessors, (145), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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 00:39:22,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:22,094 INFO L93 Difference]: Finished difference Result 148 states and 160 transitions. [2024-11-17 00:39:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:39:22,098 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 00:39:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:22,105 INFO L225 Difference]: With dead ends: 148 [2024-11-17 00:39:22,105 INFO L226 Difference]: Without dead ends: 145 [2024-11-17 00:39:22,106 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 00:39:22,109 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 3 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:22,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 255 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-17 00:39:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-17 00:39:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 80 states have (on average 1.6625) internal successors, (133), 127 states have internal predecessors, (133), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-17 00:39:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2024-11-17 00:39:22,149 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 5 [2024-11-17 00:39:22,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:22,149 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2024-11-17 00:39:22,149 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 00:39:22,150 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2024-11-17 00:39:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:39:22,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:22,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:39:22,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:39:22,150 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:22,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash 140307600, now seen corresponding path program 1 times [2024-11-17 00:39:22,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:22,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110976532] [2024-11-17 00:39:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:22,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,245 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 00:39:22,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110976532] [2024-11-17 00:39:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110976532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:22,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:39:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326164545] [2024-11-17 00:39:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:22,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:39:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:22,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:39:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:39:22,249 INFO L87 Difference]: Start difference. First operand 145 states and 157 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 00:39:22,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:22,326 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2024-11-17 00:39:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:39:22,327 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 00:39:22,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:22,329 INFO L225 Difference]: With dead ends: 142 [2024-11-17 00:39:22,333 INFO L226 Difference]: Without dead ends: 142 [2024-11-17 00:39:22,333 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 00:39:22,334 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 3 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:22,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 260 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-17 00:39:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-17 00:39:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 80 states have (on average 1.625) internal successors, (130), 124 states have internal predecessors, (130), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-17 00:39:22,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2024-11-17 00:39:22,354 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 5 [2024-11-17 00:39:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:22,355 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2024-11-17 00:39:22,355 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 00:39:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2024-11-17 00:39:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-17 00:39:22,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:22,356 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:22,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:39:22,356 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_and_zero_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:22,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:22,357 INFO L85 PathProgramCache]: Analyzing trace with hash 133955226, now seen corresponding path program 1 times [2024-11-17 00:39:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:22,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996930661] [2024-11-17 00:39:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,506 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 00:39:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:22,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996930661] [2024-11-17 00:39:22,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996930661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:22,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:22,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:39:22,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944168701] [2024-11-17 00:39:22,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:22,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:39:22,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:39:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:39:22,512 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 00:39:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:22,749 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2024-11-17 00:39:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:39:22,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 15 [2024-11-17 00:39:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:22,752 INFO L225 Difference]: With dead ends: 156 [2024-11-17 00:39:22,753 INFO L226 Difference]: Without dead ends: 156 [2024-11-17 00:39:22,754 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 00:39:22,755 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 25 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:22,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 249 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:22,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-17 00:39:22,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 141. [2024-11-17 00:39:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 80 states have (on average 1.6125) internal successors, (129), 123 states have internal predecessors, (129), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-17 00:39:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2024-11-17 00:39:22,774 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 15 [2024-11-17 00:39:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:22,774 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2024-11-17 00:39:22,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 00:39:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2024-11-17 00:39:22,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-17 00:39:22,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:22,775 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:22,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:39:22,775 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_and_zero_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:22,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:22,776 INFO L85 PathProgramCache]: Analyzing trace with hash 133955227, now seen corresponding path program 1 times [2024-11-17 00:39:22,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:22,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64043003] [2024-11-17 00:39:22,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:22,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:22,929 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 00:39:22,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64043003] [2024-11-17 00:39:22,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64043003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:22,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:22,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:39:22,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862025204] [2024-11-17 00:39:22,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:22,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:39:22,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:39:22,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:39:22,932 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 00:39:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:23,116 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2024-11-17 00:39:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:39:23,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 15 [2024-11-17 00:39:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:23,117 INFO L225 Difference]: With dead ends: 155 [2024-11-17 00:39:23,117 INFO L226 Difference]: Without dead ends: 155 [2024-11-17 00:39:23,118 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 00:39:23,119 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 25 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:23,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 255 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-17 00:39:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 140. [2024-11-17 00:39:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 80 states have (on average 1.6) internal successors, (128), 122 states have internal predecessors, (128), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-17 00:39:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2024-11-17 00:39:23,132 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 15 [2024-11-17 00:39:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:23,132 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2024-11-17 00:39:23,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 00:39:23,133 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2024-11-17 00:39:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:39:23,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:23,133 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] [2024-11-17 00:39:23,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:39:23,134 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:23,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1410861985, now seen corresponding path program 1 times [2024-11-17 00:39:23,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:23,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988162860] [2024-11-17 00:39:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:23,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:23,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:23,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:23,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:23,749 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 00:39:23,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:23,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988162860] [2024-11-17 00:39:23,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988162860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:23,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:23,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 00:39:23,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410591770] [2024-11-17 00:39:23,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:23,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:39:23,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:23,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:39:23,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:39:23,753 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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 00:39:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:24,281 INFO L93 Difference]: Finished difference Result 186 states and 218 transitions. [2024-11-17 00:39:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:39:24,282 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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 25 [2024-11-17 00:39:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:24,285 INFO L225 Difference]: With dead ends: 186 [2024-11-17 00:39:24,285 INFO L226 Difference]: Without dead ends: 186 [2024-11-17 00:39:24,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:39:24,286 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 74 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:24,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 512 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 00:39:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-17 00:39:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 164. [2024-11-17 00:39:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.595959595959596) internal successors, (158), 141 states have internal predecessors, (158), 16 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (23), 17 states have call predecessors, (23), 16 states have call successors, (23) [2024-11-17 00:39:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 197 transitions. [2024-11-17 00:39:24,301 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 197 transitions. Word has length 25 [2024-11-17 00:39:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:24,302 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 197 transitions. [2024-11-17 00:39:24,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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 00:39:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 197 transitions. [2024-11-17 00:39:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:39:24,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:24,303 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] [2024-11-17 00:39:24,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:39:24,303 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:24,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1410861984, now seen corresponding path program 1 times [2024-11-17 00:39:24,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:24,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285874364] [2024-11-17 00:39:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:24,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:24,567 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 00:39:24,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:24,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285874364] [2024-11-17 00:39:24,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285874364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:24,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:24,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 00:39:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947830681] [2024-11-17 00:39:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:24,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:39:24,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:39:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:39:24,569 INFO L87 Difference]: Start difference. First operand 164 states and 197 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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 00:39:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:25,002 INFO L93 Difference]: Finished difference Result 196 states and 233 transitions. [2024-11-17 00:39:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:39:25,002 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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 25 [2024-11-17 00:39:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:25,003 INFO L225 Difference]: With dead ends: 196 [2024-11-17 00:39:25,003 INFO L226 Difference]: Without dead ends: 196 [2024-11-17 00:39:25,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:39:25,004 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 61 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:25,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 429 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:39:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-17 00:39:25,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 174. [2024-11-17 00:39:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 147 states have internal predecessors, (171), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (24), 21 states have call predecessors, (24), 17 states have call successors, (24) [2024-11-17 00:39:25,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 212 transitions. [2024-11-17 00:39:25,018 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 212 transitions. Word has length 25 [2024-11-17 00:39:25,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:25,018 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 212 transitions. [2024-11-17 00:39:25,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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 00:39:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 212 transitions. [2024-11-17 00:39:25,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-17 00:39:25,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:25,019 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, 1] [2024-11-17 00:39:25,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 00:39:25,019 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting create_internalErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:25,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:25,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1998870445, now seen corresponding path program 1 times [2024-11-17 00:39:25,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:25,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485065744] [2024-11-17 00:39:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:25,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:39:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 00:39:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,204 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 00:39:25,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485065744] [2024-11-17 00:39:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485065744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579968454] [2024-11-17 00:39:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:25,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:25,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:25,207 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 00:39:25,208 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 00:39:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:25,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 00:39:25,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:25,335 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 00:39:25,386 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 00:39:25,432 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-17 00:39:25,433 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 00:39:25,440 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 00:39:25,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:25,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579968454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:25,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:25,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2024-11-17 00:39:25,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616643517] [2024-11-17 00:39:25,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:25,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:39:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:39:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-17 00:39:25,498 INFO L87 Difference]: Start difference. First operand 174 states and 212 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 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 00:39:25,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:25,979 INFO L93 Difference]: Finished difference Result 190 states and 232 transitions. [2024-11-17 00:39:25,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:39:25,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 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 28 [2024-11-17 00:39:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:25,981 INFO L225 Difference]: With dead ends: 190 [2024-11-17 00:39:25,981 INFO L226 Difference]: Without dead ends: 190 [2024-11-17 00:39:25,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=169, Unknown=1, NotChecked=26, Total=240 [2024-11-17 00:39:25,982 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 64 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:25,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 558 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 584 Invalid, 0 Unknown, 176 Unchecked, 0.4s Time] [2024-11-17 00:39:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-17 00:39:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 175. [2024-11-17 00:39:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 110 states have (on average 1.5636363636363637) internal successors, (172), 147 states have internal predecessors, (172), 18 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-17 00:39:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 215 transitions. [2024-11-17 00:39:25,988 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 215 transitions. Word has length 28 [2024-11-17 00:39:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:25,988 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 215 transitions. [2024-11-17 00:39:25,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 8 states have internal predecessors, (28), 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 00:39:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 215 transitions. [2024-11-17 00:39:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-17 00:39:25,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:25,989 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, 1] [2024-11-17 00:39:26,006 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 00:39:26,190 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 00:39:26,194 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting create_internalErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:26,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1998870444, now seen corresponding path program 1 times [2024-11-17 00:39:26,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:26,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029210031] [2024-11-17 00:39:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:26,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:39:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 00:39:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,486 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 00:39:26,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029210031] [2024-11-17 00:39:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029210031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435762426] [2024-11-17 00:39:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:26,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:26,489 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 00:39:26,490 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 00:39:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-17 00:39:26,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:26,595 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 00:39:26,598 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 00:39:26,690 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 00:39:26,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:26,723 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 00:39:26,732 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:26,732 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 00:39:26,735 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 00:39:26,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:26,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435762426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:26,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:26,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 12 [2024-11-17 00:39:26,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37904900] [2024-11-17 00:39:26,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:26,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:39:26,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:39:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=149, Unknown=1, NotChecked=24, Total=210 [2024-11-17 00:39:26,852 INFO L87 Difference]: Start difference. First operand 175 states and 215 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 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 00:39:27,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:27,285 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2024-11-17 00:39:27,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:39:27,285 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 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 28 [2024-11-17 00:39:27,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:27,286 INFO L225 Difference]: With dead ends: 192 [2024-11-17 00:39:27,286 INFO L226 Difference]: Without dead ends: 192 [2024-11-17 00:39:27,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=252, Unknown=1, NotChecked=32, Total=342 [2024-11-17 00:39:27,287 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 84 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:27,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 480 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 488 Invalid, 0 Unknown, 177 Unchecked, 0.3s Time] [2024-11-17 00:39:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-17 00:39:27,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 177. [2024-11-17 00:39:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 112 states have (on average 1.5446428571428572) internal successors, (173), 149 states have internal predecessors, (173), 18 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-17 00:39:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 216 transitions. [2024-11-17 00:39:27,296 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 216 transitions. Word has length 28 [2024-11-17 00:39:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:27,296 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 216 transitions. [2024-11-17 00:39:27,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 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 00:39:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 216 transitions. [2024-11-17 00:39:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-17 00:39:27,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:27,299 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] [2024-11-17 00:39:27,313 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 00:39:27,499 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 00:39:27,500 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:27,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:27,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2105518749, now seen corresponding path program 1 times [2024-11-17 00:39:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:27,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335888165] [2024-11-17 00:39:27,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:27,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:39:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,235 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 00:39:28,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:28,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335888165] [2024-11-17 00:39:28,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335888165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:28,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732015727] [2024-11-17 00:39:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:28,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:28,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:28,240 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 00:39:28,242 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 00:39:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-17 00:39:28,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:28,333 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 00:39:28,335 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 00:39:28,579 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 00:39:28,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:28,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:28,715 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 00:39:28,729 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-17 00:39:28,730 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 00:39:28,747 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 00:39:28,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:28,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732015727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:28,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:28,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2024-11-17 00:39:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033709924] [2024-11-17 00:39:28,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:28,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-17 00:39:28,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-17 00:39:28,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=649, Unknown=1, NotChecked=52, Total=812 [2024-11-17 00:39:28,944 INFO L87 Difference]: Start difference. First operand 177 states and 216 transitions. Second operand has 27 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 20 states have internal predecessors, (56), 7 states have call successors, (8), 3 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-17 00:39:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:29,930 INFO L93 Difference]: Finished difference Result 235 states and 299 transitions. [2024-11-17 00:39:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:39:29,930 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 20 states have internal predecessors, (56), 7 states have call successors, (8), 3 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 37 [2024-11-17 00:39:29,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:29,932 INFO L225 Difference]: With dead ends: 235 [2024-11-17 00:39:29,932 INFO L226 Difference]: Without dead ends: 235 [2024-11-17 00:39:29,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=854, Unknown=1, NotChecked=60, Total=1056 [2024-11-17 00:39:29,933 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 179 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 68 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:29,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 728 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1338 Invalid, 7 Unknown, 241 Unchecked, 0.8s Time] [2024-11-17 00:39:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-17 00:39:29,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 191. [2024-11-17 00:39:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 125 states have (on average 1.56) internal successors, (195), 159 states have internal predecessors, (195), 18 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (32), 26 states have call predecessors, (32), 18 states have call successors, (32) [2024-11-17 00:39:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 245 transitions. [2024-11-17 00:39:29,945 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 245 transitions. Word has length 37 [2024-11-17 00:39:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:29,945 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 245 transitions. [2024-11-17 00:39:29,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 20 states have internal predecessors, (56), 7 states have call successors, (8), 3 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-17 00:39:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 245 transitions. [2024-11-17 00:39:29,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-17 00:39:29,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:29,947 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] [2024-11-17 00:39:29,964 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 00:39:30,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:30,151 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:30,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2105518748, now seen corresponding path program 1 times [2024-11-17 00:39:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:30,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73779860] [2024-11-17 00:39:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:39:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:39:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73779860] [2024-11-17 00:39:30,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73779860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227223001] [2024-11-17 00:39:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:30,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:30,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:30,646 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 00:39:30,647 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 00:39:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 00:39:30,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:30,735 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 00:39:30,819 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 00:39:30,870 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 00:39:30,956 INFO L349 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2024-11-17 00:39:30,957 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 00:39:31,006 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:39:31,008 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:39:31,014 INFO L349 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2024-11-17 00:39:31,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 10 [2024-11-17 00:39:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2024-11-17 00:39:31,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227223001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:31,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:31,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2024-11-17 00:39:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183096678] [2024-11-17 00:39:31,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:31,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 00:39:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 00:39:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=361, Unknown=2, NotChecked=82, Total=552 [2024-11-17 00:39:31,277 INFO L87 Difference]: Start difference. First operand 191 states and 245 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 00:39:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:32,346 INFO L93 Difference]: Finished difference Result 229 states and 287 transitions. [2024-11-17 00:39:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 00:39:32,346 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 37 [2024-11-17 00:39:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:32,348 INFO L225 Difference]: With dead ends: 229 [2024-11-17 00:39:32,348 INFO L226 Difference]: Without dead ends: 229 [2024-11-17 00:39:32,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=220, Invalid=716, Unknown=2, NotChecked=118, Total=1056 [2024-11-17 00:39:32,349 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 146 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 443 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:32,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 775 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1085 Invalid, 0 Unknown, 443 Unchecked, 0.7s Time] [2024-11-17 00:39:32,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-17 00:39:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 180. [2024-11-17 00:39:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 115 states have (on average 1.5391304347826087) internal successors, (177), 152 states have internal predecessors, (177), 18 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-17 00:39:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 220 transitions. [2024-11-17 00:39:32,355 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 220 transitions. Word has length 37 [2024-11-17 00:39:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:32,356 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 220 transitions. [2024-11-17 00:39:32,356 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 00:39:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 220 transitions. [2024-11-17 00:39:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-17 00:39:32,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:32,360 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:32,374 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 00:39:32,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:32,561 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting create_internalErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:32,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1107342595, now seen corresponding path program 1 times [2024-11-17 00:39:32,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383635162] [2024-11-17 00:39:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-17 00:39:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-17 00:39:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-17 00:39:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-17 00:39:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383635162] [2024-11-17 00:39:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383635162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174849251] [2024-11-17 00:39:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:32,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:32,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:32,784 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 00:39:32,789 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 00:39:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:32,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 00:39:32,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:32,896 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 00:39:32,904 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 00:39:32,909 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 00:39:32,929 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 00:39:32,950 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-17 00:39:32,950 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 00:39:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 4 not checked. [2024-11-17 00:39:32,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:32,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174849251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:32,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:32,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2024-11-17 00:39:32,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424371708] [2024-11-17 00:39:32,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:32,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:39:32,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:32,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:39:32,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2024-11-17 00:39:32,990 INFO L87 Difference]: Start difference. First operand 180 states and 220 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-17 00:39:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:33,421 INFO L93 Difference]: Finished difference Result 197 states and 245 transitions. [2024-11-17 00:39:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 00:39:33,422 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 55 [2024-11-17 00:39:33,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:33,423 INFO L225 Difference]: With dead ends: 197 [2024-11-17 00:39:33,423 INFO L226 Difference]: Without dead ends: 197 [2024-11-17 00:39:33,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2024-11-17 00:39:33,424 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 40 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:33,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 654 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 780 Invalid, 0 Unknown, 174 Unchecked, 0.4s Time] [2024-11-17 00:39:33,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-17 00:39:33,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 179. [2024-11-17 00:39:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.5304347826086957) internal successors, (176), 151 states have internal predecessors, (176), 18 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-17 00:39:33,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 219 transitions. [2024-11-17 00:39:33,433 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 219 transitions. Word has length 55 [2024-11-17 00:39:33,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:33,433 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 219 transitions. [2024-11-17 00:39:33,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 10 states have internal predecessors, (43), 3 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-17 00:39:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 219 transitions. [2024-11-17 00:39:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-17 00:39:33,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:33,436 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, 1] [2024-11-17 00:39:33,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 00:39:33,639 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,SelfDestructingSolverStorable10 [2024-11-17 00:39:33,640 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting create_internalErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:33,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -631646248, now seen corresponding path program 1 times [2024-11-17 00:39:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:33,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241169349] [2024-11-17 00:39:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:33,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:39:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 00:39:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-17 00:39:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,917 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 00:39:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241169349] [2024-11-17 00:39:33,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241169349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:33,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989280937] [2024-11-17 00:39:33,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:33,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:33,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:33,920 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 00:39:33,921 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 00:39:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-17 00:39:34,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:34,028 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 00:39:34,038 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 00:39:34,099 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 00:39:34,102 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 00:39:34,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-17 00:39:34,227 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 00:39:34,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:34,248 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 00:39:34,252 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:34,253 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 00:39:34,270 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 00:39:34,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:34,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989280937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:34,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:34,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2024-11-17 00:39:34,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350884304] [2024-11-17 00:39:34,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:34,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 00:39:34,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 00:39:34,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=372, Unknown=1, NotChecked=38, Total=462 [2024-11-17 00:39:34,355 INFO L87 Difference]: Start difference. First operand 179 states and 219 transitions. Second operand has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 15 states have internal predecessors, (48), 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 00:39:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:35,111 INFO L93 Difference]: Finished difference Result 195 states and 243 transitions. [2024-11-17 00:39:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:39:35,111 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 15 states have internal predecessors, (48), 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 40 [2024-11-17 00:39:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:35,112 INFO L225 Difference]: With dead ends: 195 [2024-11-17 00:39:35,112 INFO L226 Difference]: Without dead ends: 195 [2024-11-17 00:39:35,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=715, Unknown=1, NotChecked=54, Total=870 [2024-11-17 00:39:35,113 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 79 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:35,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1073 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1342 Invalid, 0 Unknown, 174 Unchecked, 0.6s Time] [2024-11-17 00:39:35,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-17 00:39:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 177. [2024-11-17 00:39:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 115 states have (on average 1.5130434782608695) internal successors, (174), 149 states have internal predecessors, (174), 18 states have call successors, (18), 5 states have call predecessors, (18), 6 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2024-11-17 00:39:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 217 transitions. [2024-11-17 00:39:35,123 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 217 transitions. Word has length 40 [2024-11-17 00:39:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:35,124 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 217 transitions. [2024-11-17 00:39:35,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 15 states have internal predecessors, (48), 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 00:39:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 217 transitions. [2024-11-17 00:39:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:39:35,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:35,125 INFO L215 NwaCegarLoop]: trace histogram [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 00:39:35,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 00:39:35,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:35,325 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:35,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:35,326 INFO L85 PathProgramCache]: Analyzing trace with hash 364717301, now seen corresponding path program 1 times [2024-11-17 00:39:35,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:35,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194872299] [2024-11-17 00:39:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:35,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-17 00:39:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 00:39:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194872299] [2024-11-17 00:39:35,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194872299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:35,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:35,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:39:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868588540] [2024-11-17 00:39:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:35,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:39:35,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:35,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:39:35,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:39:35,435 INFO L87 Difference]: Start difference. First operand 177 states and 217 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:39:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:35,700 INFO L93 Difference]: Finished difference Result 221 states and 281 transitions. [2024-11-17 00:39:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:39:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2024-11-17 00:39:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:35,702 INFO L225 Difference]: With dead ends: 221 [2024-11-17 00:39:35,702 INFO L226 Difference]: Without dead ends: 221 [2024-11-17 00:39:35,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 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 00:39:35,703 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 52 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:35,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 375 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:35,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-17 00:39:35,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 199. [2024-11-17 00:39:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 137 states have (on average 1.5474452554744527) internal successors, (212), 167 states have internal predecessors, (212), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (29), 26 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-17 00:39:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 261 transitions. [2024-11-17 00:39:35,709 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 261 transitions. Word has length 48 [2024-11-17 00:39:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:35,709 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 261 transitions. [2024-11-17 00:39:35,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:39:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 261 transitions. [2024-11-17 00:39:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:39:35,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:35,710 INFO L215 NwaCegarLoop]: trace histogram [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 00:39:35,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 00:39:35,710 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:35,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash 364717302, now seen corresponding path program 1 times [2024-11-17 00:39:35,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:35,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170127901] [2024-11-17 00:39:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-17 00:39:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 00:39:35,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:35,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170127901] [2024-11-17 00:39:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170127901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:35,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:39:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168471423] [2024-11-17 00:39:35,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:35,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:39:35,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:39:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:39:35,919 INFO L87 Difference]: Start difference. First operand 199 states and 261 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:39:36,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:36,190 INFO L93 Difference]: Finished difference Result 229 states and 292 transitions. [2024-11-17 00:39:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:39:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2024-11-17 00:39:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:36,192 INFO L225 Difference]: With dead ends: 229 [2024-11-17 00:39:36,192 INFO L226 Difference]: Without dead ends: 229 [2024-11-17 00:39:36,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 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 00:39:36,194 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 46 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:36,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 653 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-17 00:39:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 210. [2024-11-17 00:39:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 146 states have (on average 1.5205479452054795) internal successors, (222), 176 states have internal predecessors, (222), 22 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (31), 28 states have call predecessors, (31), 22 states have call successors, (31) [2024-11-17 00:39:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 275 transitions. [2024-11-17 00:39:36,199 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 275 transitions. Word has length 48 [2024-11-17 00:39:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:36,200 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 275 transitions. [2024-11-17 00:39:36,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:39:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 275 transitions. [2024-11-17 00:39:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-17 00:39:36,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:36,203 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-17 00:39:36,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 00:39:36,203 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:36,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash -975404984, now seen corresponding path program 1 times [2024-11-17 00:39:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:36,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794875015] [2024-11-17 00:39:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:36,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:36,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:36,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:36,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:36,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-17 00:39:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:36,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 00:39:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794875015] [2024-11-17 00:39:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794875015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:36,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:39:36,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21075086] [2024-11-17 00:39:36,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:36,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:39:36,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:36,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:39:36,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:39:36,347 INFO L87 Difference]: Start difference. First operand 210 states and 275 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:39:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:36,554 INFO L93 Difference]: Finished difference Result 234 states and 305 transitions. [2024-11-17 00:39:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:39:36,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2024-11-17 00:39:36,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:36,555 INFO L225 Difference]: With dead ends: 234 [2024-11-17 00:39:36,555 INFO L226 Difference]: Without dead ends: 234 [2024-11-17 00:39:36,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 00:39:36,556 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 55 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:36,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 721 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:36,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-17 00:39:36,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 212. [2024-11-17 00:39:36,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 148 states have (on average 1.5) internal successors, (222), 178 states have internal predecessors, (222), 22 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (31), 28 states have call predecessors, (31), 22 states have call successors, (31) [2024-11-17 00:39:36,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 275 transitions. [2024-11-17 00:39:36,561 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 275 transitions. Word has length 51 [2024-11-17 00:39:36,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:36,561 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 275 transitions. [2024-11-17 00:39:36,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:39:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 275 transitions. [2024-11-17 00:39:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-17 00:39:36,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:36,562 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-17 00:39:36,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 00:39:36,562 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:36,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:36,563 INFO L85 PathProgramCache]: Analyzing trace with hash 273724364, now seen corresponding path program 1 times [2024-11-17 00:39:36,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:36,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202835467] [2024-11-17 00:39:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:36,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-17 00:39:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:39:37,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202835467] [2024-11-17 00:39:37,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202835467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409946360] [2024-11-17 00:39:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:37,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:37,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:37,468 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 00:39:37,470 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 00:39:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-17 00:39:37,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:37,617 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 00:39:37,659 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 00:39:37,729 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1)) (= |c_#memory_$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))))) is different from true [2024-11-17 00:39:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:37,786 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 20 treesize of output 15 [2024-11-17 00:39:37,816 INFO L349 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2024-11-17 00:39:37,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2024-11-17 00:39:37,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2024-11-17 00:39:38,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-17 00:39:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2024-11-17 00:39:38,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:38,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409946360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:38,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:38,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 36 [2024-11-17 00:39:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202168560] [2024-11-17 00:39:38,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:38,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-17 00:39:38,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-17 00:39:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1515, Unknown=1, NotChecked=78, Total=1722 [2024-11-17 00:39:38,537 INFO L87 Difference]: Start difference. First operand 212 states and 275 transitions. Second operand has 37 states, 32 states have (on average 2.34375) internal successors, (75), 27 states have internal predecessors, (75), 9 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 00:39:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:40,497 INFO L93 Difference]: Finished difference Result 268 states and 345 transitions. [2024-11-17 00:39:40,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 00:39:40,498 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 2.34375) internal successors, (75), 27 states have internal predecessors, (75), 9 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) Word has length 53 [2024-11-17 00:39:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:40,499 INFO L225 Difference]: With dead ends: 268 [2024-11-17 00:39:40,499 INFO L226 Difference]: Without dead ends: 268 [2024-11-17 00:39:40,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=232, Invalid=2851, Unknown=1, NotChecked=108, Total=3192 [2024-11-17 00:39:40,500 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 144 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:40,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1603 Invalid, 2804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2527 Invalid, 0 Unknown, 230 Unchecked, 1.4s Time] [2024-11-17 00:39:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-17 00:39:40,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 239. [2024-11-17 00:39:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 172 states have (on average 1.4767441860465116) internal successors, (254), 202 states have internal predecessors, (254), 23 states have call successors, (23), 6 states have call predecessors, (23), 8 states have return successors, (41), 30 states have call predecessors, (41), 23 states have call successors, (41) [2024-11-17 00:39:40,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2024-11-17 00:39:40,511 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 53 [2024-11-17 00:39:40,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:40,511 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2024-11-17 00:39:40,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 2.34375) internal successors, (75), 27 states have internal predecessors, (75), 9 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 00:39:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2024-11-17 00:39:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-17 00:39:40,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:40,513 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-17 00:39:40,526 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 00:39:40,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:40,717 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:39:40,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash 273724365, now seen corresponding path program 1 times [2024-11-17 00:39:40,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:40,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554042900] [2024-11-17 00:39:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:40,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-17 00:39:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:39:41,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554042900] [2024-11-17 00:39:41,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554042900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37427248] [2024-11-17 00:39:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:41,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:41,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:41,710 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 00:39:41,711 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 00:39:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-17 00:39:41,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:41,869 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 00:39:42,008 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 00:39:42,015 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 00:39:46,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:46,270 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 20 treesize of output 15 [2024-11-17 00:39:46,281 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-17 00:39:46,282 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 18 treesize of output 20 [2024-11-17 00:39:46,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:46,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-17 00:39:46,294 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:46,294 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 00:39:46,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-17 00:39:46,366 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 29 treesize of output 13 [2024-11-17 00:39:46,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-17 00:39:46,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-17 00:39:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:46,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:47,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37427248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:47,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:47,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 37 [2024-11-17 00:39:47,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543804309] [2024-11-17 00:39:47,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:47,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-17 00:39:47,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:47,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-17 00:39:47,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1931, Unknown=1, NotChecked=0, Total=2070 [2024-11-17 00:39:47,111 INFO L87 Difference]: Start difference. First operand 239 states and 318 transitions. Second operand has 38 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-17 00:39:49,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:39:53,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:39:54,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:39:57,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:40:02,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:40:06,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:40:10,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:40:15,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:40:21,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:40:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:21,188 INFO L93 Difference]: Finished difference Result 271 states and 350 transitions. [2024-11-17 00:40:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 00:40:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) Word has length 53 [2024-11-17 00:40:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:21,190 INFO L225 Difference]: With dead ends: 271 [2024-11-17 00:40:21,191 INFO L226 Difference]: Without dead ends: 271 [2024-11-17 00:40:21,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=268, Invalid=3636, Unknown=2, NotChecked=0, Total=3906 [2024-11-17 00:40:21,192 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 132 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 2779 mSolverCounterSat, 45 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2779 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:21,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1891 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2779 Invalid, 7 Unknown, 0 Unchecked, 33.4s Time] [2024-11-17 00:40:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-17 00:40:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 239. [2024-11-17 00:40:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 172 states have (on average 1.4709302325581395) internal successors, (253), 202 states have internal predecessors, (253), 23 states have call successors, (23), 6 states have call predecessors, (23), 8 states have return successors, (41), 30 states have call predecessors, (41), 23 states have call successors, (41) [2024-11-17 00:40:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 317 transitions. [2024-11-17 00:40:21,199 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 317 transitions. Word has length 53 [2024-11-17 00:40:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:21,199 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 317 transitions. [2024-11-17 00:40:21,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (10), 10 states have call predecessors, (10), 6 states have call successors, (10) [2024-11-17 00:40:21,199 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 317 transitions. [2024-11-17 00:40:21,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-17 00:40:21,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:21,200 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2024-11-17 00:40:21,214 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 00:40:21,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 00:40:21,405 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [loop_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, loop_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2024-11-17 00:40:21,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:21,405 INFO L85 PathProgramCache]: Analyzing trace with hash 303523567, now seen corresponding path program 1 times [2024-11-17 00:40:21,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:21,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123205366] [2024-11-17 00:40:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:21,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:21,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:21,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:40:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:21,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:21,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-17 00:40:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:22,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:22,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:40:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:23,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 00:40:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:40:23,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:23,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123205366] [2024-11-17 00:40:23,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123205366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:23,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656410272] [2024-11-17 00:40:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:23,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:23,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:23,520 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 00:40:23,520 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 00:40:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:23,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-17 00:40:23,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:23,901 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_#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 00:40:23,929 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 00:40:25,631 INFO L349 Elim1Store]: treesize reduction 350, result has 32.8 percent of original size [2024-11-17 00:40:25,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 69 treesize of output 302 [2024-11-17 00:40:40,988 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:40,989 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:40,990 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:40,990 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:40,991 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:40,998 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:40,998 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,001 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,055 INFO L349 Elim1Store]: treesize reduction 140, result has 0.7 percent of original size [2024-11-17 00:40:41,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 43 [2024-11-17 00:40:41,148 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,149 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,149 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,150 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,150 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,152 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,153 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,153 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,157 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,204 INFO L349 Elim1Store]: treesize reduction 140, result has 0.7 percent of original size [2024-11-17 00:40:41,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 54 treesize of output 43 [2024-11-17 00:40:41,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,295 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,295 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,296 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,296 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,299 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,300 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,300 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,348 INFO L349 Elim1Store]: treesize reduction 152, result has 0.7 percent of original size [2024-11-17 00:40:41,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 43 [2024-11-17 00:40:41,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,430 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,434 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,435 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,435 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,436 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,441 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,441 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,443 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,473 INFO L349 Elim1Store]: treesize reduction 134, result has 0.7 percent of original size [2024-11-17 00:40:41,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 54 treesize of output 43 [2024-11-17 00:40:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,551 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,551 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,552 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,555 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,569 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,570 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,768 INFO L349 Elim1Store]: treesize reduction 289, result has 5.6 percent of original size [2024-11-17 00:40:41,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 62 [2024-11-17 00:40:41,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:41,920 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,950 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,951 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,951 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,959 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:41,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,020 INFO L349 Elim1Store]: treesize reduction 125, result has 0.8 percent of original size [2024-11-17 00:40:42,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 52 treesize of output 43 [2024-11-17 00:40:42,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:42,171 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,178 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,179 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,179 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,180 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,184 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,184 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,185 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,213 INFO L349 Elim1Store]: treesize reduction 113, result has 0.9 percent of original size [2024-11-17 00:40:42,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 54 treesize of output 43 [2024-11-17 00:40:42,292 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,294 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,294 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,299 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,300 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,300 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:42,456 INFO L349 Elim1Store]: treesize reduction 436, result has 0.2 percent of original size [2024-11-17 00:40:42,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 17 case distinctions, treesize of input 64 treesize of output 1 [2024-11-17 00:40:42,554 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:43,608 INFO L349 Elim1Store]: treesize reduction 572, result has 16.3 percent of original size [2024-11-17 00:40:43,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 31 case distinctions, treesize of input 106 treesize of output 345 [2024-11-17 00:40:44,467 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-17 00:40:44,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,537 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,549 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,549 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,558 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,564 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,565 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,581 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,581 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,582 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,582 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,583 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,583 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,603 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2024-11-17 00:40:44,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 102 treesize of output 116 [2024-11-17 00:40:44,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,828 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,843 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:44,887 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,918 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,956 INFO L224 Elim1Store]: Index analysis took 218 ms [2024-11-17 00:40:44,958 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,959 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,961 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,962 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:44,962 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:45,030 INFO L349 Elim1Store]: treesize reduction 152, result has 0.7 percent of original size [2024-11-17 00:40:45,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 102 treesize of output 116 [2024-11-17 00:40:45,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:45,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:45,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:45,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:45,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:45,952 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:45,953 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:45,953 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:45,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:45,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:45,961 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:46,066 INFO L349 Elim1Store]: treesize reduction 234, result has 0.4 percent of original size [2024-11-17 00:40:46,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 54 treesize of output 43 [2024-11-17 00:40:46,238 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:47,305 INFO L349 Elim1Store]: treesize reduction 572, result has 16.3 percent of original size [2024-11-17 00:40:47,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 106 treesize of output 345