./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e6ddc72db9996307e31b37c1f23ddad101cfdc849bb3a24fd3b76db809c7055 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:38:07,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:38:07,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 18:38:07,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:38:07,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:38:07,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:38:07,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:38:07,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:38:07,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 18:38:07,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 18:38:07,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:38:07,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:38:07,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:38:07,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:38:07,693 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:38:07,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:38:07,697 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 18:38:07,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:38:07,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 18:38:07,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:38:07,697 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 18:38:07,699 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 18:38:07,700 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 18:38:07,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:38:07,700 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 18:38:07,700 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:38:07,701 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:38:07,701 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 18:38:07,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:38:07,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:38:07,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:38:07,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 18:38:07,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:38:07,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:38:07,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:38:07,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:38:07,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:38:07,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:38:07,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:38:07,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:38:07,705 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:38:07,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:38:07,706 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e6ddc72db9996307e31b37c1f23ddad101cfdc849bb3a24fd3b76db809c7055 [2024-11-22 18:38:07,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:38:07,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:38:07,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:38:07,988 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:38:07,988 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:38:07,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i [2024-11-22 18:38:09,471 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:38:09,724 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:38:09,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext_flag_1.i [2024-11-22 18:38:09,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0f56bba/108c6e8288b64d8ab28deaf3ac920d33/FLAG03c21388c [2024-11-22 18:38:09,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0f56bba/108c6e8288b64d8ab28deaf3ac920d33 [2024-11-22 18:38:09,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:38:09,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:38:09,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:38:09,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:38:09,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:38:09,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:38:09" (1/1) ... [2024-11-22 18:38:09,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9921ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:09, skipping insertion in model container [2024-11-22 18:38:09,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:38:09" (1/1) ... [2024-11-22 18:38:09,815 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:38:10,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:38:10,210 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:38:10,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:38:10,301 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:38:10,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10 WrapperNode [2024-11-22 18:38:10,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:38:10,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:38:10,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:38:10,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:38:10,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,357 INFO L138 Inliner]: procedures = 124, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116 [2024-11-22 18:38:10,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:38:10,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:38:10,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:38:10,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:38:10,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,399 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-22 18:38:10,399 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:38:10,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:38:10,420 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:38:10,420 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:38:10,421 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (1/1) ... [2024-11-22 18:38:10,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:38:10,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:10,454 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 18:38:10,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 18:38:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-22 18:38:10,500 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-22 18:38:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 18:38:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 18:38:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 18:38:10,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 18:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 18:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 18:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 18:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 18:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 18:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 18:38:10,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 18:38:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 18:38:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 18:38:10,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:38:10,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:38:10,612 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:38:10,614 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:38:10,632 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-22 18:38:10,906 INFO L? ?]: Removed 80 outVars from TransFormulas that were not future-live. [2024-11-22 18:38:10,907 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:38:10,924 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:38:10,924 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 18:38:10,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:38:10 BoogieIcfgContainer [2024-11-22 18:38:10,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:38:10,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:38:10,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:38:10,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:38:10,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:38:09" (1/3) ... [2024-11-22 18:38:10,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632daff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:38:10, skipping insertion in model container [2024-11-22 18:38:10,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:10" (2/3) ... [2024-11-22 18:38:10,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632daff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:38:10, skipping insertion in model container [2024-11-22 18:38:10,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:38:10" (3/3) ... [2024-11-22 18:38:10,937 INFO L112 eAbstractionObserver]: Analyzing ICFG list-ext_flag_1.i [2024-11-22 18:38:10,953 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:38:10,954 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2024-11-22 18:38:11,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:38:11,020 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;@74df93e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:38:11,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-11-22 18:38:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 92 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:38:11,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 18:38:11,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:11,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 18:38:11,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:11,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517928, now seen corresponding path program 1 times [2024-11-22 18:38:11,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:11,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182710011] [2024-11-22 18:38:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:11,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182710011] [2024-11-22 18:38:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182710011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:11,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:11,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:38:11,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187993319] [2024-11-22 18:38:11,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:11,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:38:11,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:38:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:38:11,243 INFO L87 Difference]: Start difference. First operand has 94 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 92 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-11-22 18:38:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:11,261 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2024-11-22 18:38:11,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:38:11,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2024-11-22 18:38:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:11,268 INFO L225 Difference]: With dead ends: 93 [2024-11-22 18:38:11,268 INFO L226 Difference]: Without dead ends: 87 [2024-11-22 18:38:11,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:38:11,273 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:11,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:11,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-22 18:38:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-22 18:38:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 47 states have (on average 2.0) internal successors, (94), 86 states have internal predecessors, (94), 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) [2024-11-22 18:38:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2024-11-22 18:38:11,308 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 6 [2024-11-22 18:38:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:11,309 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2024-11-22 18:38:11,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-11-22 18:38:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2024-11-22 18:38:11,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 18:38:11,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:11,310 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:11,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:38:11,310 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:11,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash 620871761, now seen corresponding path program 1 times [2024-11-22 18:38:11,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:11,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681504399] [2024-11-22 18:38:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:11,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:11,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681504399] [2024-11-22 18:38:11,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681504399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:11,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:11,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563300260] [2024-11-22 18:38:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:11,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:11,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:11,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:11,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:11,474 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-11-22 18:38:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:11,671 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2024-11-22 18:38:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:38:11,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 8 [2024-11-22 18:38:11,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:11,672 INFO L225 Difference]: With dead ends: 84 [2024-11-22 18:38:11,673 INFO L226 Difference]: Without dead ends: 84 [2024-11-22 18:38:11,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:11,674 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 105 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:11,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 53 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-22 18:38:11,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-11-22 18:38:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.7222222222222223) internal successors, (93), 79 states have internal predecessors, (93), 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) [2024-11-22 18:38:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2024-11-22 18:38:11,688 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 8 [2024-11-22 18:38:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:11,689 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2024-11-22 18:38:11,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-11-22 18:38:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2024-11-22 18:38:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 18:38:11,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:11,690 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:11,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:38:11,691 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:11,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:11,691 INFO L85 PathProgramCache]: Analyzing trace with hash 620871762, now seen corresponding path program 1 times [2024-11-22 18:38:11,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:11,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111096961] [2024-11-22 18:38:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:11,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:11,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111096961] [2024-11-22 18:38:11,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111096961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:11,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:11,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:11,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790924198] [2024-11-22 18:38:11,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:11,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:11,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:11,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:11,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:11,879 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-11-22 18:38:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:12,096 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2024-11-22 18:38:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:38:12,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 8 [2024-11-22 18:38:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:12,098 INFO L225 Difference]: With dead ends: 108 [2024-11-22 18:38:12,098 INFO L226 Difference]: Without dead ends: 108 [2024-11-22 18:38:12,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:12,099 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 119 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:12,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 84 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-22 18:38:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2024-11-22 18:38:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.5256410256410255) internal successors, (119), 103 states have internal predecessors, (119), 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) [2024-11-22 18:38:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2024-11-22 18:38:12,113 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 8 [2024-11-22 18:38:12,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:12,114 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2024-11-22 18:38:12,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2024-11-22 18:38:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2024-11-22 18:38:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 18:38:12,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:12,117 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:12,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 18:38:12,117 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:12,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1711952764, now seen corresponding path program 1 times [2024-11-22 18:38:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:12,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302971337] [2024-11-22 18:38:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:12,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:12,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302971337] [2024-11-22 18:38:12,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302971337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:12,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:12,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:38:12,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144801217] [2024-11-22 18:38:12,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:12,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:38:12,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:38:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:38:12,307 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-22 18:38:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:12,462 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2024-11-22 18:38:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:38:12,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2024-11-22 18:38:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:12,463 INFO L225 Difference]: With dead ends: 111 [2024-11-22 18:38:12,464 INFO L226 Difference]: Without dead ends: 111 [2024-11-22 18:38:12,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:38:12,465 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 19 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:12,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 259 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:12,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-22 18:38:12,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2024-11-22 18:38:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.518987341772152) internal successors, (120), 104 states have internal predecessors, (120), 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) [2024-11-22 18:38:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2024-11-22 18:38:12,478 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 17 [2024-11-22 18:38:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:12,478 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2024-11-22 18:38:12,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-22 18:38:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2024-11-22 18:38:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-22 18:38:12,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:12,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:12,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 18:38:12,479 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:12,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:12,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1529942363, now seen corresponding path program 1 times [2024-11-22 18:38:12,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:12,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527309511] [2024-11-22 18:38:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:12,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:12,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527309511] [2024-11-22 18:38:12,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527309511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:12,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:12,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:12,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787268832] [2024-11-22 18:38:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:12,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:12,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:12,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:12,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:12,550 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2024-11-22 18:38:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:12,657 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2024-11-22 18:38:12,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:38:12,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 18 [2024-11-22 18:38:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:12,658 INFO L225 Difference]: With dead ends: 111 [2024-11-22 18:38:12,658 INFO L226 Difference]: Without dead ends: 111 [2024-11-22 18:38:12,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:12,660 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:12,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 95 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:12,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-22 18:38:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2024-11-22 18:38:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 81 states have (on average 1.5061728395061729) internal successors, (122), 106 states have internal predecessors, (122), 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) [2024-11-22 18:38:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2024-11-22 18:38:12,672 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 18 [2024-11-22 18:38:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:12,673 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2024-11-22 18:38:12,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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) [2024-11-22 18:38:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2024-11-22 18:38:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 18:38:12,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:12,674 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:12,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 18:38:12,674 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:12,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash -42052461, now seen corresponding path program 1 times [2024-11-22 18:38:12,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:12,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666532207] [2024-11-22 18:38:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:12,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:12,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:12,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666532207] [2024-11-22 18:38:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666532207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:12,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:12,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:38:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084770345] [2024-11-22 18:38:12,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:12,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:12,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:38:12,927 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-11-22 18:38:13,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:13,124 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2024-11-22 18:38:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:38:13,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2024-11-22 18:38:13,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:13,126 INFO L225 Difference]: With dead ends: 122 [2024-11-22 18:38:13,129 INFO L226 Difference]: Without dead ends: 122 [2024-11-22 18:38:13,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:13,130 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 37 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:13,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 246 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:13,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-22 18:38:13,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 110. [2024-11-22 18:38:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 109 states have internal predecessors, (125), 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) [2024-11-22 18:38:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2024-11-22 18:38:13,141 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 19 [2024-11-22 18:38:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:13,144 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2024-11-22 18:38:13,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2024-11-22 18:38:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2024-11-22 18:38:13,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:38:13,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:13,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:13,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 18:38:13,145 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:13,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1395789581, now seen corresponding path program 1 times [2024-11-22 18:38:13,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:13,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811002970] [2024-11-22 18:38:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:13,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:13,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:13,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811002970] [2024-11-22 18:38:13,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811002970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:13,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:13,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:38:13,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98391331] [2024-11-22 18:38:13,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:13,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:38:13,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:13,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:38:13,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:13,263 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-22 18:38:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:13,391 INFO L93 Difference]: Finished difference Result 140 states and 156 transitions. [2024-11-22 18:38:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:38:13,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-11-22 18:38:13,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:13,393 INFO L225 Difference]: With dead ends: 140 [2024-11-22 18:38:13,393 INFO L226 Difference]: Without dead ends: 136 [2024-11-22 18:38:13,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:38:13,395 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 45 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:13,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 198 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-22 18:38:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 114. [2024-11-22 18:38:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 88 states have (on average 1.4659090909090908) internal successors, (129), 113 states have internal predecessors, (129), 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) [2024-11-22 18:38:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2024-11-22 18:38:13,401 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 20 [2024-11-22 18:38:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:13,402 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2024-11-22 18:38:13,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2024-11-22 18:38:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2024-11-22 18:38:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-22 18:38:13,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:13,403 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:13,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 18:38:13,403 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:13,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1499534887, now seen corresponding path program 1 times [2024-11-22 18:38:13,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:13,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981641592] [2024-11-22 18:38:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:13,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:13,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:13,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981641592] [2024-11-22 18:38:13,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981641592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:13,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:13,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:38:13,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23300132] [2024-11-22 18:38:13,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:13,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:38:13,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:13,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:38:13,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:38:13,552 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-22 18:38:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:13,709 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2024-11-22 18:38:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:38:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2024-11-22 18:38:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:13,711 INFO L225 Difference]: With dead ends: 116 [2024-11-22 18:38:13,711 INFO L226 Difference]: Without dead ends: 116 [2024-11-22 18:38:13,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:13,712 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 35 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:13,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 164 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:13,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-22 18:38:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2024-11-22 18:38:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 111 states have internal predecessors, (127), 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) [2024-11-22 18:38:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2024-11-22 18:38:13,717 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 21 [2024-11-22 18:38:13,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:13,718 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2024-11-22 18:38:13,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-22 18:38:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2024-11-22 18:38:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-22 18:38:13,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:13,719 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:13,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 18:38:13,719 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:13,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1499534886, now seen corresponding path program 1 times [2024-11-22 18:38:13,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:13,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811945167] [2024-11-22 18:38:13,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:13,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:13,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:13,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811945167] [2024-11-22 18:38:13,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811945167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:13,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:13,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:38:13,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127837845] [2024-11-22 18:38:13,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:13,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:38:13,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:38:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:38:13,995 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-22 18:38:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:14,195 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2024-11-22 18:38:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:38:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2024-11-22 18:38:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:14,196 INFO L225 Difference]: With dead ends: 104 [2024-11-22 18:38:14,197 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 18:38:14,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:14,198 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 12 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:14,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 228 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 18:38:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2024-11-22 18:38:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 93 states have internal predecessors, (108), 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) [2024-11-22 18:38:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2024-11-22 18:38:14,211 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 21 [2024-11-22 18:38:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:14,212 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2024-11-22 18:38:14,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2024-11-22 18:38:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2024-11-22 18:38:14,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-22 18:38:14,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:14,215 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:14,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 18:38:14,215 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:14,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:14,216 INFO L85 PathProgramCache]: Analyzing trace with hash 37796891, now seen corresponding path program 1 times [2024-11-22 18:38:14,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:14,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616943095] [2024-11-22 18:38:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:14,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:14,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:14,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616943095] [2024-11-22 18:38:14,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616943095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:14,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:14,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:38:14,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656277738] [2024-11-22 18:38:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:14,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:14,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:38:14,535 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-22 18:38:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:14,704 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2024-11-22 18:38:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:38:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2024-11-22 18:38:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:14,705 INFO L225 Difference]: With dead ends: 108 [2024-11-22 18:38:14,705 INFO L226 Difference]: Without dead ends: 99 [2024-11-22 18:38:14,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:38:14,706 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 108 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:14,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 182 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-22 18:38:14,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2024-11-22 18:38:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 84 states have internal predecessors, (98), 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) [2024-11-22 18:38:14,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2024-11-22 18:38:14,710 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 22 [2024-11-22 18:38:14,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:14,710 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2024-11-22 18:38:14,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-22 18:38:14,710 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2024-11-22 18:38:14,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 18:38:14,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:14,711 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:14,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 18:38:14,712 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:14,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:14,712 INFO L85 PathProgramCache]: Analyzing trace with hash -778213877, now seen corresponding path program 1 times [2024-11-22 18:38:14,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:14,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501531168] [2024-11-22 18:38:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:14,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:15,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:15,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501531168] [2024-11-22 18:38:15,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501531168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:15,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498606323] [2024-11-22 18:38:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:15,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:15,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:15,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:15,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:38:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:15,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-22 18:38:15,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:15,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 18:38:15,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:38:15,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-11-22 18:38:15,637 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 18:38:15,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 18:38:15,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 18:38:15,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:38:15,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:38:15,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2024-11-22 18:38:15,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-22 18:38:15,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2024-11-22 18:38:15,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2024-11-22 18:38:15,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:15,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-11-22 18:38:15,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:15,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:16,031 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 (Array Int Int))) (not (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_198) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0))) is different from false [2024-11-22 18:38:16,110 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_198 (Array Int Int))) (not (= (select (select (store |c_#memory_int#1| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_198) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0))) is different from false [2024-11-22 18:38:16,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:16,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 42 [2024-11-22 18:38:16,525 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-22 18:38:16,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 46 [2024-11-22 18:38:16,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-22 18:38:16,542 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-22 18:38:16,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-22 18:38:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-11-22 18:38:16,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498606323] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:16,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:16,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-22 18:38:16,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001026098] [2024-11-22 18:38:16,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:16,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-22 18:38:16,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:16,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-22 18:38:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1000, Unknown=11, NotChecked=134, Total=1332 [2024-11-22 18:38:16,621 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 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) [2024-11-22 18:38:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:17,481 INFO L93 Difference]: Finished difference Result 169 states and 193 transitions. [2024-11-22 18:38:17,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 18:38:17,482 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 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 32 [2024-11-22 18:38:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:17,487 INFO L225 Difference]: With dead ends: 169 [2024-11-22 18:38:17,487 INFO L226 Difference]: Without dead ends: 169 [2024-11-22 18:38:17,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=1552, Unknown=11, NotChecked=170, Total=2070 [2024-11-22 18:38:17,488 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 313 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:17,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 749 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 837 Invalid, 0 Unknown, 344 Unchecked, 0.6s Time] [2024-11-22 18:38:17,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-22 18:38:17,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 105. [2024-11-22 18:38:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 89 states have (on average 1.3707865168539326) internal successors, (122), 104 states have internal predecessors, (122), 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) [2024-11-22 18:38:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2024-11-22 18:38:17,496 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 32 [2024-11-22 18:38:17,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:17,496 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2024-11-22 18:38:17,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 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) [2024-11-22 18:38:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2024-11-22 18:38:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 18:38:17,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:17,499 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:17,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 18:38:17,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 18:38:17,701 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:17,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1074038507, now seen corresponding path program 1 times [2024-11-22 18:38:17,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:17,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042802041] [2024-11-22 18:38:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:18,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042802041] [2024-11-22 18:38:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042802041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:18,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603809060] [2024-11-22 18:38:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:18,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:18,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:18,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:18,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:38:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:18,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 18:38:18,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:18,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 18:38:18,262 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 18:38:18,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 18:38:18,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 18:38:18,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:38:18,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-22 18:38:18,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-22 18:38:18,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-22 18:38:18,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-22 18:38:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:18,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:18,440 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_273 (Array Int Int))) (= (select (select (store |c_#memory_int#1| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 8)) v_ArrVal_273) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2024-11-22 18:38:18,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:18,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2024-11-22 18:38:18,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:18,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2024-11-22 18:38:18,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-22 18:38:18,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:18,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2024-11-22 18:38:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:18,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603809060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:18,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:18,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 18 [2024-11-22 18:38:18,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140984749] [2024-11-22 18:38:18,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:18,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 18:38:18,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:18,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 18:38:18,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=211, Unknown=13, NotChecked=30, Total=306 [2024-11-22 18:38:18,703 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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) [2024-11-22 18:38:19,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:19,138 INFO L93 Difference]: Finished difference Result 172 states and 196 transitions. [2024-11-22 18:38:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 18:38:19,139 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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 32 [2024-11-22 18:38:19,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:19,140 INFO L225 Difference]: With dead ends: 172 [2024-11-22 18:38:19,140 INFO L226 Difference]: Without dead ends: 172 [2024-11-22 18:38:19,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=353, Unknown=13, NotChecked=40, Total=506 [2024-11-22 18:38:19,141 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 147 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:19,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 514 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 467 Invalid, 0 Unknown, 157 Unchecked, 0.3s Time] [2024-11-22 18:38:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-22 18:38:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 107. [2024-11-22 18:38:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 106 states have internal predecessors, (124), 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) [2024-11-22 18:38:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2024-11-22 18:38:19,144 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 32 [2024-11-22 18:38:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:19,145 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2024-11-22 18:38:19,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 18 states have internal predecessors, (47), 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) [2024-11-22 18:38:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2024-11-22 18:38:19,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 18:38:19,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:19,146 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:19,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 18:38:19,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 18:38:19,347 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-11-22 18:38:19,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:19,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025696, now seen corresponding path program 1 times [2024-11-22 18:38:19,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:19,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73872970] [2024-11-22 18:38:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:19,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:19,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:19,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:19,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73872970] [2024-11-22 18:38:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73872970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:19,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031874556] [2024-11-22 18:38:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:19,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:19,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:19,769 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:19,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:38:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:19,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 18:38:19,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:19,936 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-22 18:38:19,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-22 18:38:19,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 18:38:20,092 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-22 18:38:20,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 30 [2024-11-22 18:38:20,113 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 18:38:20,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 18:38:20,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 18:38:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:20,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:20,309 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_346) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2024-11-22 18:38:20,324 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem10#1.base| v_ArrVal_346) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) 1)) is different from false [2024-11-22 18:38:20,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:20,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-22 18:38:20,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:20,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2024-11-22 18:38:20,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-22 18:38:21,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:21,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 150 treesize of output 748