./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-2.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 1bedc761cea545b8144ad4138a379d7139cc98703c76e9b536a2e7389d5b6a10 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 18:22:10,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 18:22:10,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-10-11 18:22:10,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 18:22:10,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 18:22:10,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 18:22:10,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 18:22:10,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 18:22:10,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 18:22:10,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 18:22:10,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 18:22:10,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 18:22:10,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 18:22:10,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 18:22:10,407 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 18:22:10,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 18:22:10,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 18:22:10,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 18:22:10,408 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 18:22:10,408 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 18:22:10,409 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 18:22:10,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 18:22:10,410 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 18:22:10,410 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 18:22:10,410 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 18:22:10,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 18:22:10,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 18:22:10,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 18:22:10,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 18:22:10,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 18:22:10,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:22:10,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 18:22:10,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 18:22:10,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 18:22:10,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 18:22:10,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 18:22:10,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 18:22:10,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 18:22:10,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 18:22:10,414 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bedc761cea545b8144ad4138a379d7139cc98703c76e9b536a2e7389d5b6a10 [2024-10-11 18:22:10,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 18:22:10,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 18:22:10,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 18:22:10,680 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 18:22:10,680 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 18:22:10,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-2.c [2024-10-11 18:22:12,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 18:22:12,334 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 18:22:12,334 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Pointer-2.c [2024-10-11 18:22:12,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ce321cfce/e72e519f70534f6fa1be61f170a6a29b/FLAGfd25a53f6 [2024-10-11 18:22:12,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/ce321cfce/e72e519f70534f6fa1be61f170a6a29b [2024-10-11 18:22:12,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 18:22:12,361 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 18:22:12,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 18:22:12,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 18:22:12,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 18:22:12,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12, skipping insertion in model container [2024-10-11 18:22:12,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 18:22:12,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:22:12,617 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 18:22:12,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 18:22:12,698 INFO L204 MainTranslator]: Completed translation [2024-10-11 18:22:12,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12 WrapperNode [2024-10-11 18:22:12,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 18:22:12,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 18:22:12,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 18:22:12,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 18:22:12,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,731 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2024-10-11 18:22:12,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 18:22:12,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 18:22:12,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 18:22:12,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 18:22:12,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,746 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,764 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2024-10-11 18:22:12,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 18:22:12,779 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 18:22:12,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 18:22:12,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 18:22:12,780 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (1/1) ... [2024-10-11 18:22:12,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 18:22:12,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:12,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 18:22:12,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 18:22:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 18:22:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 18:22:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 18:22:12,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 18:22:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 18:22:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 18:22:12,913 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 18:22:12,915 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 18:22:13,077 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-10-11 18:22:13,077 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 18:22:13,113 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 18:22:13,113 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 18:22:13,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:22:13 BoogieIcfgContainer [2024-10-11 18:22:13,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 18:22:13,117 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 18:22:13,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 18:22:13,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 18:22:13,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:22:12" (1/3) ... [2024-10-11 18:22:13,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b54aed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:22:13, skipping insertion in model container [2024-10-11 18:22:13,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:22:12" (2/3) ... [2024-10-11 18:22:13,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b54aed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:22:13, skipping insertion in model container [2024-10-11 18:22:13,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:22:13" (3/3) ... [2024-10-11 18:22:13,125 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Pointer-2.c [2024-10-11 18:22:13,142 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 18:22:13,143 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-10-11 18:22:13,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 18:22:13,208 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;@72c6691d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 18:22:13,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-11 18:22:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 15 states have (on average 2.2) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 18:22:13,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:13,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 18:22:13,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:13,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:13,227 INFO L85 PathProgramCache]: Analyzing trace with hash 96422, now seen corresponding path program 1 times [2024-10-11 18:22:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:13,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955310639] [2024-10-11 18:22:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:13,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:13,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955310639] [2024-10-11 18:22:13,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955310639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:22:13,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:22:13,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 18:22:13,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900491316] [2024-10-11 18:22:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:22:13,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:22:13,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:13,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:22:13,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:22:13,494 INFO L87 Difference]: Start difference. First operand has 28 states, 15 states have (on average 2.2) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:13,579 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-10-11 18:22:13,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:22:13,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-11 18:22:13,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:13,590 INFO L225 Difference]: With dead ends: 38 [2024-10-11 18:22:13,591 INFO L226 Difference]: Without dead ends: 37 [2024-10-11 18:22:13,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:22:13,597 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:13,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 39 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:22:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-11 18:22:13,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2024-10-11 18:22:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-10-11 18:22:13,629 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 3 [2024-10-11 18:22:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:13,629 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-10-11 18:22:13,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-10-11 18:22:13,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 18:22:13,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:13,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 18:22:13,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 18:22:13,632 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:13,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:13,633 INFO L85 PathProgramCache]: Analyzing trace with hash 96423, now seen corresponding path program 1 times [2024-10-11 18:22:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:13,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342182908] [2024-10-11 18:22:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:13,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342182908] [2024-10-11 18:22:13,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342182908] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:22:13,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:22:13,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 18:22:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048657173] [2024-10-11 18:22:13,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:22:13,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:22:13,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:13,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:22:13,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:22:13,763 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:13,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:13,803 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-10-11 18:22:13,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:22:13,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-11 18:22:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:13,805 INFO L225 Difference]: With dead ends: 33 [2024-10-11 18:22:13,805 INFO L226 Difference]: Without dead ends: 33 [2024-10-11 18:22:13,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:22:13,807 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:13,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:22:13,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-10-11 18:22:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-10-11 18:22:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-10-11 18:22:13,816 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 3 [2024-10-11 18:22:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:13,816 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-10-11 18:22:13,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-10-11 18:22:13,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 18:22:13,817 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:13,817 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2024-10-11 18:22:13,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 18:22:13,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:13,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:13,819 INFO L85 PathProgramCache]: Analyzing trace with hash 92721447, now seen corresponding path program 1 times [2024-10-11 18:22:13,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:13,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513005661] [2024-10-11 18:22:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:13,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:14,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:14,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513005661] [2024-10-11 18:22:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513005661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:14,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402771711] [2024-10-11 18:22:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:14,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:14,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:14,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:14,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 18:22:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:14,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 18:22:14,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:14,159 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 [2024-10-11 18:22:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:14,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:22:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:14,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402771711] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:22:14,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:22:14,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-11 18:22:14,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212173795] [2024-10-11 18:22:14,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:22:14,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 18:22:14,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:14,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 18:22:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-11 18:22:14,305 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:14,413 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2024-10-11 18:22:14,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 18:22:14,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-11 18:22:14,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:14,416 INFO L225 Difference]: With dead ends: 39 [2024-10-11 18:22:14,416 INFO L226 Difference]: Without dead ends: 39 [2024-10-11 18:22:14,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-10-11 18:22:14,418 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 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 [2024-10-11 18:22:14,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:22:14,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-11 18:22:14,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-11 18:22:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-10-11 18:22:14,425 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 5 [2024-10-11 18:22:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:14,426 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-10-11 18:22:14,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-10-11 18:22:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-11 18:22:14,427 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:14,427 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:14,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 18:22:14,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:14,631 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:14,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash -835542549, now seen corresponding path program 1 times [2024-10-11 18:22:14,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:14,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805554500] [2024-10-11 18:22:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:14,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:14,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805554500] [2024-10-11 18:22:14,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805554500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325662868] [2024-10-11 18:22:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:14,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:14,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:14,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:14,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 18:22:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:14,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 18:22:14,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:14,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:22:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:14,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325662868] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:22:14,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:22:14,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-11 18:22:14,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556065004] [2024-10-11 18:22:14,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:22:14,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 18:22:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:14,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 18:22:14,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-11 18:22:14,962 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:15,113 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-10-11 18:22:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 18:22:15,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-11 18:22:15,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:15,114 INFO L225 Difference]: With dead ends: 39 [2024-10-11 18:22:15,114 INFO L226 Difference]: Without dead ends: 39 [2024-10-11 18:22:15,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2024-10-11 18:22:15,116 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:15,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 26 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:22:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-11 18:22:15,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2024-10-11 18:22:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:15,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-10-11 18:22:15,121 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2024-10-11 18:22:15,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:15,122 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-10-11 18:22:15,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-10-11 18:22:15,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-11 18:22:15,124 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:15,124 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1] [2024-10-11 18:22:15,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 18:22:15,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:15,326 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:15,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash -25290073, now seen corresponding path program 2 times [2024-10-11 18:22:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:15,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34359707] [2024-10-11 18:22:15,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:15,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34359707] [2024-10-11 18:22:15,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34359707] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:15,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66625073] [2024-10-11 18:22:15,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:22:15,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:15,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:15,577 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:15,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 18:22:15,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 18:22:15,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:22:15,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 18:22:15,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:15,653 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 [2024-10-11 18:22:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:15,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:22:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66625073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:22:15,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:22:15,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2024-10-11 18:22:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909393684] [2024-10-11 18:22:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:22:15,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 18:22:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:15,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 18:22:15,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-10-11 18:22:15,837 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:15,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:15,890 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-10-11 18:22:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 18:22:15,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-11 18:22:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:15,891 INFO L225 Difference]: With dead ends: 32 [2024-10-11 18:22:15,891 INFO L226 Difference]: Without dead ends: 32 [2024-10-11 18:22:15,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-10-11 18:22:15,892 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:15,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:22:15,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-11 18:22:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-11 18:22:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2024-10-11 18:22:15,895 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 11 [2024-10-11 18:22:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:15,896 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2024-10-11 18:22:15,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2024-10-11 18:22:15,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-11 18:22:15,896 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:15,896 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:15,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 18:22:16,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:16,101 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:16,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1251721196, now seen corresponding path program 1 times [2024-10-11 18:22:16,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:16,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258677288] [2024-10-11 18:22:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:16,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258677288] [2024-10-11 18:22:16,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258677288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845355126] [2024-10-11 18:22:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:16,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:16,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:16,259 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:16,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 18:22:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:16,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 18:22:16,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:16,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:22:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:16,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845355126] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:22:16,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:22:16,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-10-11 18:22:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067180734] [2024-10-11 18:22:16,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:22:16,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 18:22:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 18:22:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-10-11 18:22:16,488 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:16,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:16,546 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2024-10-11 18:22:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 18:22:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-11 18:22:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:16,548 INFO L225 Difference]: With dead ends: 48 [2024-10-11 18:22:16,548 INFO L226 Difference]: Without dead ends: 48 [2024-10-11 18:22:16,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-10-11 18:22:16,549 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:16,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:22:16,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-11 18:22:16,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-11 18:22:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-10-11 18:22:16,558 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 18 [2024-10-11 18:22:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:16,558 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-10-11 18:22:16,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-10-11 18:22:16,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-11 18:22:16,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:16,559 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:16,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 18:22:16,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-11 18:22:16,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:16,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:16,760 INFO L85 PathProgramCache]: Analyzing trace with hash -982254612, now seen corresponding path program 2 times [2024-10-11 18:22:16,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:16,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996761826] [2024-10-11 18:22:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:16,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:17,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:17,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996761826] [2024-10-11 18:22:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996761826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:17,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377279440] [2024-10-11 18:22:17,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:22:17,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:17,118 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:17,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 18:22:17,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 18:22:17,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:22:17,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 18:22:17,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:17,220 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 [2024-10-11 18:22:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-11 18:22:17,396 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:22:17,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377279440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:22:17,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:22:17,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [16] total 18 [2024-10-11 18:22:17,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553800457] [2024-10-11 18:22:17,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:22:17,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:22:17,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:17,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:22:17,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2024-10-11 18:22:17,399 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:17,459 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-10-11 18:22:17,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:22:17,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-11 18:22:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:17,462 INFO L225 Difference]: With dead ends: 60 [2024-10-11 18:22:17,462 INFO L226 Difference]: Without dead ends: 60 [2024-10-11 18:22:17,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2024-10-11 18:22:17,464 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:17,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 21 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:22:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-11 18:22:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2024-10-11 18:22:17,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2024-10-11 18:22:17,473 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 34 [2024-10-11 18:22:17,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:17,475 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2024-10-11 18:22:17,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2024-10-11 18:22:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-11 18:22:17,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:17,478 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:17,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-11 18:22:17,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:17,679 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:17,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:17,680 INFO L85 PathProgramCache]: Analyzing trace with hash 946310350, now seen corresponding path program 1 times [2024-10-11 18:22:17,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:17,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288777257] [2024-10-11 18:22:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-11 18:22:17,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:17,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288777257] [2024-10-11 18:22:17,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288777257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:22:17,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:22:17,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 18:22:17,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526212654] [2024-10-11 18:22:17,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:22:17,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:22:17,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:17,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:22:17,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:22:17,752 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:17,766 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2024-10-11 18:22:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:22:17,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-10-11 18:22:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:17,768 INFO L225 Difference]: With dead ends: 53 [2024-10-11 18:22:17,769 INFO L226 Difference]: Without dead ends: 53 [2024-10-11 18:22:17,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:22:17,771 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:17,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 14 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:22:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-11 18:22:17,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-11 18:22:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2024-10-11 18:22:17,780 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 36 [2024-10-11 18:22:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:17,780 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2024-10-11 18:22:17,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2024-10-11 18:22:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 18:22:17,781 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:17,781 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:17,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 18:22:17,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:17,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:17,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1128817423, now seen corresponding path program 1 times [2024-10-11 18:22:17,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:17,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707794562] [2024-10-11 18:22:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:17,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-11 18:22:17,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:17,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707794562] [2024-10-11 18:22:17,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707794562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:22:17,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:22:17,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 18:22:17,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332161995] [2024-10-11 18:22:17,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:22:17,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 18:22:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 18:22:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 18:22:17,969 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:18,007 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2024-10-11 18:22:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 18:22:18,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-11 18:22:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:18,008 INFO L225 Difference]: With dead ends: 54 [2024-10-11 18:22:18,009 INFO L226 Difference]: Without dead ends: 54 [2024-10-11 18:22:18,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-11 18:22:18,009 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:18,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 29 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:22:18,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-11 18:22:18,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-10-11 18:22:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.183673469387755) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-10-11 18:22:18,013 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 38 [2024-10-11 18:22:18,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:18,014 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-10-11 18:22:18,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-10-11 18:22:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 18:22:18,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:18,015 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:18,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 18:22:18,015 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:18,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash -681091692, now seen corresponding path program 1 times [2024-10-11 18:22:18,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:18,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968949979] [2024-10-11 18:22:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:18,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:18,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:18,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968949979] [2024-10-11 18:22:18,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968949979] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:18,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608116157] [2024-10-11 18:22:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:18,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:18,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:18,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:18,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 18:22:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:18,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 18:22:18,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:18,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:22:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:18,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608116157] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:22:18,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:22:18,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2024-10-11 18:22:18,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143938435] [2024-10-11 18:22:18,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:22:18,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 18:22:18,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 18:22:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 18:22:18,926 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:19,037 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2024-10-11 18:22:19,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-11 18:22:19,038 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-11 18:22:19,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:19,039 INFO L225 Difference]: With dead ends: 85 [2024-10-11 18:22:19,039 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 18:22:19,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 18:22:19,040 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:19,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 58 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 18:22:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 18:22:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-10-11 18:22:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 84 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2024-10-11 18:22:19,048 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 39 [2024-10-11 18:22:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:19,048 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2024-10-11 18:22:19,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2024-10-11 18:22:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 18:22:19,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:19,050 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:19,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 18:22:19,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 18:22:19,251 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:19,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:19,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1272322668, now seen corresponding path program 2 times [2024-10-11 18:22:19,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:19,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222639776] [2024-10-11 18:22:19,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:19,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 18:22:20,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222639776] [2024-10-11 18:22:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222639776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253379718] [2024-10-11 18:22:20,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:22:20,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:20,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:20,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:20,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 18:22:20,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 18:22:20,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:22:20,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 18:22:20,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:20,629 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~p~0#1.base_14| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~p~0#1.base_14|) 0) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~p~0#1.base_14| 0)))) is different from true [2024-10-11 18:22:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2024-10-11 18:22:20,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 18:22:20,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253379718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:22:20,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 18:22:20,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [32] total 34 [2024-10-11 18:22:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214230998] [2024-10-11 18:22:20,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:22:20,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 18:22:20,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:20,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 18:22:20,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=593, Unknown=1, NotChecked=64, Total=1190 [2024-10-11 18:22:20,632 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:20,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:20,647 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2024-10-11 18:22:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 18:22:20,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-11 18:22:20,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:20,649 INFO L225 Difference]: With dead ends: 84 [2024-10-11 18:22:20,649 INFO L226 Difference]: Without dead ends: 80 [2024-10-11 18:22:20,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=532, Invalid=593, Unknown=1, NotChecked=64, Total=1190 [2024-10-11 18:22:20,650 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:20,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2024-10-11 18:22:20,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-11 18:22:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-11 18:22:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2024-10-11 18:22:20,654 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 71 [2024-10-11 18:22:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:20,654 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2024-10-11 18:22:20,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2024-10-11 18:22:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 18:22:20,656 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:20,656 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:20,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 18:22:20,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:20,860 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:20,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1270987997, now seen corresponding path program 1 times [2024-10-11 18:22:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:20,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928415654] [2024-10-11 18:22:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 18:22:21,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:21,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928415654] [2024-10-11 18:22:21,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928415654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:21,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171812712] [2024-10-11 18:22:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:21,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:21,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:21,995 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:21,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 18:22:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:22,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 18:22:22,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 18:22:22,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:22:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 18:22:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171812712] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:22:23,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:22:23,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2024-10-11 18:22:23,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351612220] [2024-10-11 18:22:23,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:22:23,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-10-11 18:22:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-10-11 18:22:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-10-11 18:22:23,565 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 64 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:23,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:23,798 INFO L93 Difference]: Finished difference Result 144 states and 148 transitions. [2024-10-11 18:22:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-10-11 18:22:23,799 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 64 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-11 18:22:23,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:23,800 INFO L225 Difference]: With dead ends: 144 [2024-10-11 18:22:23,800 INFO L226 Difference]: Without dead ends: 144 [2024-10-11 18:22:23,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-10-11 18:22:23,802 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:23,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 74 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 18:22:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-11 18:22:23,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-10-11 18:22:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 141 states have (on average 1.049645390070922) internal successors, (148), 143 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2024-10-11 18:22:23,809 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 71 [2024-10-11 18:22:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:23,809 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2024-10-11 18:22:23,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 64 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2024-10-11 18:22:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-11 18:22:23,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:23,813 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:23,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 18:22:24,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 18:22:24,014 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:24,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:24,015 INFO L85 PathProgramCache]: Analyzing trace with hash 694375203, now seen corresponding path program 2 times [2024-10-11 18:22:24,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:24,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227135774] [2024-10-11 18:22:24,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3847 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 18:22:27,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227135774] [2024-10-11 18:22:27,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227135774] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468603997] [2024-10-11 18:22:27,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 18:22:27,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:27,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:27,097 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:27,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 18:22:27,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 18:22:27,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:22:27,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-11 18:22:27,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3847 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 18:22:27,517 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:22:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3847 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 18:22:31,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468603997] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:22:31,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:22:31,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 128 [2024-10-11 18:22:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612059108] [2024-10-11 18:22:31,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:22:31,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-10-11 18:22:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:31,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-10-11 18:22:31,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-10-11 18:22:31,665 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand has 129 states, 129 states have (on average 2.0310077519379846) internal successors, (262), 128 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:32,081 INFO L93 Difference]: Finished difference Result 272 states and 276 transitions. [2024-10-11 18:22:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-10-11 18:22:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0310077519379846) internal successors, (262), 128 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-10-11 18:22:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:32,083 INFO L225 Difference]: With dead ends: 272 [2024-10-11 18:22:32,083 INFO L226 Difference]: Without dead ends: 272 [2024-10-11 18:22:32,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-10-11 18:22:32,087 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:32,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 65 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 18:22:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-11 18:22:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-10-11 18:22:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 269 states have (on average 1.0260223048327137) internal successors, (276), 271 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 276 transitions. [2024-10-11 18:22:32,103 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 276 transitions. Word has length 135 [2024-10-11 18:22:32,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:32,103 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 276 transitions. [2024-10-11 18:22:32,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0310077519379846) internal successors, (262), 128 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:32,104 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 276 transitions. [2024-10-11 18:22:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-10-11 18:22:32,106 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:32,107 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 18:22:32,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 18:22:32,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:32,311 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:32,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash 36533027, now seen corresponding path program 3 times [2024-10-11 18:22:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:32,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467886761] [2024-10-11 18:22:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:32,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15879 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 18:22:42,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467886761] [2024-10-11 18:22:42,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467886761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:22:42,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423941958] [2024-10-11 18:22:42,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 18:22:42,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:22:42,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:22:42,758 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:22:42,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 18:22:42,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 18:22:42,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 18:22:42,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 18:22:42,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 18:22:42,940 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 [2024-10-11 18:22:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15879 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15876 trivial. 0 not checked. [2024-10-11 18:22:43,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 18:22:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15879 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15876 trivial. 0 not checked. [2024-10-11 18:22:45,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423941958] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 18:22:45,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 18:22:45,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 6, 6] total 140 [2024-10-11 18:22:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807045446] [2024-10-11 18:22:45,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 18:22:45,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2024-10-11 18:22:45,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2024-10-11 18:22:45,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8300, Invalid=11440, Unknown=0, NotChecked=0, Total=19740 [2024-10-11 18:22:45,349 INFO L87 Difference]: Start difference. First operand 272 states and 276 transitions. Second operand has 141 states, 141 states have (on average 2.0354609929078014) internal successors, (287), 140 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:56,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:56,094 INFO L93 Difference]: Finished difference Result 305 states and 318 transitions. [2024-10-11 18:22:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2024-10-11 18:22:56,095 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 2.0354609929078014) internal successors, (287), 140 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 263 [2024-10-11 18:22:56,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:56,099 INFO L225 Difference]: With dead ends: 305 [2024-10-11 18:22:56,099 INFO L226 Difference]: Without dead ends: 305 [2024-10-11 18:22:56,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11005 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=26834, Invalid=50172, Unknown=0, NotChecked=0, Total=77006 [2024-10-11 18:22:56,109 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1419 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:56,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 74 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 18:22:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-10-11 18:22:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 289. [2024-10-11 18:22:56,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.0347222222222223) internal successors, (298), 288 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 298 transitions. [2024-10-11 18:22:56,124 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 298 transitions. Word has length 263 [2024-10-11 18:22:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:56,124 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 298 transitions. [2024-10-11 18:22:56,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 2.0354609929078014) internal successors, (287), 140 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 298 transitions. [2024-10-11 18:22:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-11 18:22:56,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:56,131 INFO L215 NwaCegarLoop]: trace histogram [127, 127, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 18:22:56,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-11 18:22:56,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 18:22:56,332 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:56,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1338085665, now seen corresponding path program 1 times [2024-10-11 18:22:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:56,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835025196] [2024-10-11 18:22:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:56,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:22:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16162 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 16141 trivial. 0 not checked. [2024-10-11 18:22:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:22:56,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835025196] [2024-10-11 18:22:56,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835025196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 18:22:56,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 18:22:56,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 18:22:56,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359111754] [2024-10-11 18:22:56,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 18:22:56,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 18:22:56,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 18:22:56,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 18:22:56,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:22:56,555 INFO L87 Difference]: Start difference. First operand 289 states and 298 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 18:22:56,567 INFO L93 Difference]: Finished difference Result 292 states and 298 transitions. [2024-10-11 18:22:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 18:22:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2024-10-11 18:22:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 18:22:56,569 INFO L225 Difference]: With dead ends: 292 [2024-10-11 18:22:56,569 INFO L226 Difference]: Without dead ends: 289 [2024-10-11 18:22:56,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 18:22:56,570 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 18:22:56,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 18:22:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-10-11 18:22:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-10-11 18:22:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.0208333333333333) internal successors, (294), 288 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 294 transitions. [2024-10-11 18:22:56,575 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 294 transitions. Word has length 277 [2024-10-11 18:22:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 18:22:56,576 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 294 transitions. [2024-10-11 18:22:56,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 18:22:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 294 transitions. [2024-10-11 18:22:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-10-11 18:22:56,578 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 18:22:56,578 INFO L215 NwaCegarLoop]: trace histogram [127, 127, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2024-10-11 18:22:56,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 18:22:56,579 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2024-10-11 18:22:56,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 18:22:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash 314341420, now seen corresponding path program 4 times [2024-10-11 18:22:56,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 18:22:56,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474273617] [2024-10-11 18:22:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 18:22:56,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 18:22:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 18:23:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16171 backedges. 0 proven. 16129 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 18:23:06,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 18:23:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474273617] [2024-10-11 18:23:06,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474273617] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 18:23:06,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113768229] [2024-10-11 18:23:06,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 18:23:06,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 18:23:06,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 18:23:06,114 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 18:23:06,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process