./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.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 ce7b97696e85da66033a1f3711f1d24681434c76600ae3cd891d7ea07b7fcbea --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:53:55,787 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:53:55,880 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 17:53:55,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:53:55,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:53:55,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:53:55,914 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:53:55,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:53:55,915 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 17:53:55,918 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 17:53:55,918 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:53:55,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:53:55,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:53:55,919 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:53:55,920 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:53:55,920 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:53:55,920 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:53:55,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:53:55,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:53:55,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:53:55,921 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 17:53:55,925 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 17:53:55,925 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 17:53:55,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:53:55,925 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 17:53:55,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:53:55,926 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:53:55,926 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:53:55,926 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:53:55,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:53:55,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:53:55,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 17:53:55,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:53:55,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:53:55,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:53:55,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:53:55,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:53:55,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:53:55,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:53:55,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:53:55,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:53:55,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:53:55,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce7b97696e85da66033a1f3711f1d24681434c76600ae3cd891d7ea07b7fcbea [2024-10-14 17:53:56,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:53:56,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:53:56,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:53:56,203 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:53:56,203 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:53:56,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.i [2024-10-14 17:53:57,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:53:57,798 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:53:57,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.i [2024-10-14 17:53:57,811 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5705e5410/41e80cb08d614093b52260b15a1e4014/FLAG3449229ca [2024-10-14 17:53:57,824 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5705e5410/41e80cb08d614093b52260b15a1e4014 [2024-10-14 17:53:57,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:53:57,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:53:57,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:53:57,833 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:53:57,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:53:57,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:53:57" (1/1) ... [2024-10-14 17:53:57,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31119623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:57, skipping insertion in model container [2024-10-14 17:53:57,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:53:57" (1/1) ... [2024-10-14 17:53:57,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:53:58,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:53:58,188 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:53:58,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:53:58,274 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:53:58,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58 WrapperNode [2024-10-14 17:53:58,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:53:58,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:53:58,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:53:58,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:53:58,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,319 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2024-10-14 17:53:58,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:53:58,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:53:58,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:53:58,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:53:58,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,349 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-10-14 17:53:58,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,366 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:53:58,369 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:53:58,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:53:58,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:53:58,370 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (1/1) ... [2024-10-14 17:53:58,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:53:58,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:53:58,402 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) [2024-10-14 17:53:58,404 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 [2024-10-14 17:53:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 17:53:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 17:53:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 17:53:58,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 17:53:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 17:53:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:53:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 17:53:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 17:53:58,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 17:53:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 17:53:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:53:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 17:53:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 17:53:58,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:53:58,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:53:58,553 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:53:58,555 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:53:58,801 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-10-14 17:53:58,801 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:53:58,850 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:53:58,852 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 17:53:58,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:53:58 BoogieIcfgContainer [2024-10-14 17:53:58,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:53:58,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:53:58,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:53:58,876 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:53:58,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:53:57" (1/3) ... [2024-10-14 17:53:58,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc72103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:53:58, skipping insertion in model container [2024-10-14 17:53:58,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:53:58" (2/3) ... [2024-10-14 17:53:58,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc72103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:53:58, skipping insertion in model container [2024-10-14 17:53:58,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:53:58" (3/3) ... [2024-10-14 17:53:58,879 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.0.i [2024-10-14 17:53:58,894 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:53:58,894 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-10-14 17:53:58,955 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:53:58,964 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;@36469b45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:53:58,965 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-14 17:53:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 35 states have (on average 2.142857142857143) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:53:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 17:53:58,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:53:58,977 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 17:53:58,978 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:53:58,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:53:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash 5969409, now seen corresponding path program 1 times [2024-10-14 17:53:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:53:58,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031399523] [2024-10-14 17:53:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:53:58,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:53:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:53:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:53:59,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:53:59,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031399523] [2024-10-14 17:53:59,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031399523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:53:59,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:53:59,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:53:59,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816301571] [2024-10-14 17:53:59,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:53:59,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 17:53:59,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:53:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 17:53:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 17:53:59,178 INFO L87 Difference]: Start difference. First operand has 56 states, 35 states have (on average 2.142857142857143) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:53:59,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:53:59,216 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2024-10-14 17:53:59,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 17:53:59,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2024-10-14 17:53:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:53:59,227 INFO L225 Difference]: With dead ends: 56 [2024-10-14 17:53:59,227 INFO L226 Difference]: Without dead ends: 55 [2024-10-14 17:53:59,229 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 [2024-10-14 17:53:59,233 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:53:59,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:53:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-14 17:53:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-10-14 17:53:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 2.057142857142857) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:53:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-10-14 17:53:59,263 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 4 [2024-10-14 17:53:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:53:59,264 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-10-14 17:53:59,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:53:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-10-14 17:53:59,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 17:53:59,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:53:59,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 17:53:59,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:53:59,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:53:59,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:53:59,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1323128715, now seen corresponding path program 1 times [2024-10-14 17:53:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:53:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035836603] [2024-10-14 17:53:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:53:59,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:53:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:53:59,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:53:59,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:53:59,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035836603] [2024-10-14 17:53:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035836603] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:53:59,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:53:59,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:53:59,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353365266] [2024-10-14 17:53:59,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:53:59,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:53:59,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:53:59,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:53:59,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:53:59,447 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2024-10-14 17:53:59,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:53:59,541 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-10-14 17:53:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:53:59,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 [2024-10-14 17:53:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:53:59,544 INFO L225 Difference]: With dead ends: 72 [2024-10-14 17:53:59,545 INFO L226 Difference]: Without dead ends: 72 [2024-10-14 17:53:59,546 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 [2024-10-14 17:53:59,547 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 17 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:53:59,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 173 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:53:59,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-14 17:53:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2024-10-14 17:53:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 2.0) internal successors, (74), 56 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:53:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-10-14 17:53:59,562 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 6 [2024-10-14 17:53:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:53:59,562 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-10-14 17:53:59,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2024-10-14 17:53:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-10-14 17:53:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-14 17:53:59,563 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:53:59,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 17:53:59,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:53:59,564 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:53:59,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:53:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1323188297, now seen corresponding path program 1 times [2024-10-14 17:53:59,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:53:59,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106170777] [2024-10-14 17:53:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:53:59,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:53:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:53:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:53:59,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:53:59,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106170777] [2024-10-14 17:53:59,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106170777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:53:59,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:53:59,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:53:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137605577] [2024-10-14 17:53:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:53:59,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:53:59,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:53:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:53:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:53:59,621 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2024-10-14 17:53:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:53:59,680 INFO L93 Difference]: Finished difference Result 99 states and 133 transitions. [2024-10-14 17:53:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:53:59,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2024-10-14 17:53:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:53:59,681 INFO L225 Difference]: With dead ends: 99 [2024-10-14 17:53:59,682 INFO L226 Difference]: Without dead ends: 99 [2024-10-14 17:53:59,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:53:59,683 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 57 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:53:59,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 116 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:53:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-14 17:53:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 83. [2024-10-14 17:53:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 63 states have (on average 2.015873015873016) internal successors, (127), 82 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) [2024-10-14 17:53:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 127 transitions. [2024-10-14 17:53:59,700 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 127 transitions. Word has length 6 [2024-10-14 17:53:59,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:53:59,700 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 127 transitions. [2024-10-14 17:53:59,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2024-10-14 17:53:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 127 transitions. [2024-10-14 17:53:59,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 17:53:59,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:53:59,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:53:59,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:53:59,702 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:53:59,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:53:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1930837147, now seen corresponding path program 1 times [2024-10-14 17:53:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:53:59,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739394817] [2024-10-14 17:53:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:53:59,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:53:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:53:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:53:59,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:53:59,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739394817] [2024-10-14 17:53:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739394817] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:53:59,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:53:59,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:53:59,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754630518] [2024-10-14 17:53:59,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:53:59,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:53:59,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:53:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:53:59,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:53:59,770 INFO L87 Difference]: Start difference. First operand 83 states and 127 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:53:59,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:53:59,844 INFO L93 Difference]: Finished difference Result 154 states and 238 transitions. [2024-10-14 17:53:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:53:59,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-10-14 17:53:59,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:53:59,847 INFO L225 Difference]: With dead ends: 154 [2024-10-14 17:53:59,847 INFO L226 Difference]: Without dead ends: 151 [2024-10-14 17:53:59,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:53:59,851 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 57 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:53:59,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 103 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:53:59,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-14 17:53:59,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 132. [2024-10-14 17:53:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 131 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:53:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 225 transitions. [2024-10-14 17:53:59,869 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 225 transitions. Word has length 7 [2024-10-14 17:53:59,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:53:59,870 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 225 transitions. [2024-10-14 17:53:59,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:53:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 225 transitions. [2024-10-14 17:53:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 17:53:59,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:53:59,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:53:59,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 17:53:59,872 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:53:59,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:53:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1930894162, now seen corresponding path program 1 times [2024-10-14 17:53:59,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:53:59,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213975156] [2024-10-14 17:53:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:53:59,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:53:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:53:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:53:59,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:53:59,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213975156] [2024-10-14 17:53:59,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213975156] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:53:59,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:53:59,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:53:59,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237917961] [2024-10-14 17:53:59,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:53:59,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:53:59,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:53:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:53:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:53:59,974 INFO L87 Difference]: Start difference. First operand 132 states and 225 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:00,067 INFO L93 Difference]: Finished difference Result 200 states and 324 transitions. [2024-10-14 17:54:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:54:00,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-10-14 17:54:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:00,069 INFO L225 Difference]: With dead ends: 200 [2024-10-14 17:54:00,069 INFO L226 Difference]: Without dead ends: 200 [2024-10-14 17:54:00,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:54:00,070 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 63 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:00,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 142 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-10-14 17:54:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 178. [2024-10-14 17:54:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 160 states have (on average 1.9375) internal successors, (310), 177 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 310 transitions. [2024-10-14 17:54:00,096 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 310 transitions. Word has length 7 [2024-10-14 17:54:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:00,096 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 310 transitions. [2024-10-14 17:54:00,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 310 transitions. [2024-10-14 17:54:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 17:54:00,097 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:00,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:00,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 17:54:00,098 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:00,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:00,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1930894161, now seen corresponding path program 1 times [2024-10-14 17:54:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346102006] [2024-10-14 17:54:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:00,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:00,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346102006] [2024-10-14 17:54:00,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346102006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:54:00,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:54:00,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:54:00,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688943748] [2024-10-14 17:54:00,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:54:00,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:54:00,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:00,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:54:00,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:54:00,223 INFO L87 Difference]: Start difference. First operand 178 states and 310 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:00,281 INFO L93 Difference]: Finished difference Result 195 states and 315 transitions. [2024-10-14 17:54:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:54:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-10-14 17:54:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:00,283 INFO L225 Difference]: With dead ends: 195 [2024-10-14 17:54:00,283 INFO L226 Difference]: Without dead ends: 195 [2024-10-14 17:54:00,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:54:00,285 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 62 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:00,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 149 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-10-14 17:54:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 176. [2024-10-14 17:54:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 160 states have (on average 1.8875) internal successors, (302), 175 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 302 transitions. [2024-10-14 17:54:00,295 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 302 transitions. Word has length 7 [2024-10-14 17:54:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:00,295 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 302 transitions. [2024-10-14 17:54:00,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 302 transitions. [2024-10-14 17:54:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 17:54:00,296 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:00,297 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:00,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 17:54:00,297 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:00,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash 271831126, now seen corresponding path program 1 times [2024-10-14 17:54:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288425058] [2024-10-14 17:54:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:00,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:00,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288425058] [2024-10-14 17:54:00,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288425058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:54:00,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:54:00,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:54:00,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382668331] [2024-10-14 17:54:00,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:54:00,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:54:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:00,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:54:00,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:54:00,342 INFO L87 Difference]: Start difference. First operand 176 states and 302 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:00,390 INFO L93 Difference]: Finished difference Result 158 states and 243 transitions. [2024-10-14 17:54:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:54:00,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-14 17:54:00,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:00,391 INFO L225 Difference]: With dead ends: 158 [2024-10-14 17:54:00,391 INFO L226 Difference]: Without dead ends: 158 [2024-10-14 17:54:00,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:54:00,392 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 41 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:00,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 158 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:54:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-10-14 17:54:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 136. [2024-10-14 17:54:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 124 states have (on average 1.8306451612903225) internal successors, (227), 135 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 227 transitions. [2024-10-14 17:54:00,406 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 227 transitions. Word has length 8 [2024-10-14 17:54:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:00,406 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 227 transitions. [2024-10-14 17:54:00,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 227 transitions. [2024-10-14 17:54:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 17:54:00,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:00,407 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:00,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:54:00,407 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -111813905, now seen corresponding path program 1 times [2024-10-14 17:54:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561256866] [2024-10-14 17:54:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:00,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:00,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561256866] [2024-10-14 17:54:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561256866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:54:00,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:54:00,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:54:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147477643] [2024-10-14 17:54:00,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:54:00,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:54:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:54:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:54:00,463 INFO L87 Difference]: Start difference. First operand 136 states and 227 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:00,500 INFO L93 Difference]: Finished difference Result 215 states and 337 transitions. [2024-10-14 17:54:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:54:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-10-14 17:54:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:00,502 INFO L225 Difference]: With dead ends: 215 [2024-10-14 17:54:00,502 INFO L226 Difference]: Without dead ends: 215 [2024-10-14 17:54:00,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:54:00,503 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:00,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 154 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:54:00,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-10-14 17:54:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 200. [2024-10-14 17:54:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 188 states have (on average 1.7127659574468086) internal successors, (322), 199 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 322 transitions. [2024-10-14 17:54:00,516 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 322 transitions. Word has length 9 [2024-10-14 17:54:00,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:00,516 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 322 transitions. [2024-10-14 17:54:00,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 322 transitions. [2024-10-14 17:54:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 17:54:00,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:00,517 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:00,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:54:00,517 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:00,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:00,518 INFO L85 PathProgramCache]: Analyzing trace with hash -925635527, now seen corresponding path program 1 times [2024-10-14 17:54:00,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:00,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516913380] [2024-10-14 17:54:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:00,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 17:54:00,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:00,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516913380] [2024-10-14 17:54:00,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516913380] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:54:00,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:54:00,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:54:00,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548728587] [2024-10-14 17:54:00,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:54:00,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:54:00,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:54:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:54:00,570 INFO L87 Difference]: Start difference. First operand 200 states and 322 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:00,591 INFO L93 Difference]: Finished difference Result 212 states and 334 transitions. [2024-10-14 17:54:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:54:00,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2024-10-14 17:54:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:00,592 INFO L225 Difference]: With dead ends: 212 [2024-10-14 17:54:00,593 INFO L226 Difference]: Without dead ends: 212 [2024-10-14 17:54:00,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:54:00,593 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:00,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:54:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-14 17:54:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2024-10-14 17:54:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 198 states have (on average 1.6767676767676767) internal successors, (332), 209 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 332 transitions. [2024-10-14 17:54:00,602 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 332 transitions. Word has length 15 [2024-10-14 17:54:00,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:00,602 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 332 transitions. [2024-10-14 17:54:00,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:00,603 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 332 transitions. [2024-10-14 17:54:00,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 17:54:00,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:00,605 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:00,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 17:54:00,605 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:00,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:00,606 INFO L85 PathProgramCache]: Analyzing trace with hash -923788485, now seen corresponding path program 1 times [2024-10-14 17:54:00,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:00,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805627218] [2024-10-14 17:54:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:00,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:00,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805627218] [2024-10-14 17:54:00,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805627218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399608935] [2024-10-14 17:54:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:00,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:00,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:00,715 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) [2024-10-14 17:54:00,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:54:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:00,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 17:54:00,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:00,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:00,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399608935] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:00,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:00,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-10-14 17:54:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508281990] [2024-10-14 17:54:00,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:00,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:54:00,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:00,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:54:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-14 17:54:00,922 INFO L87 Difference]: Start difference. First operand 210 states and 332 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:01,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:01,019 INFO L93 Difference]: Finished difference Result 214 states and 322 transitions. [2024-10-14 17:54:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:54:01,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-10-14 17:54:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:01,022 INFO L225 Difference]: With dead ends: 214 [2024-10-14 17:54:01,022 INFO L226 Difference]: Without dead ends: 214 [2024-10-14 17:54:01,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:54:01,023 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 83 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:01,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 263 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:01,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-10-14 17:54:01,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 206. [2024-10-14 17:54:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 194 states have (on average 1.6494845360824741) internal successors, (320), 205 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2024-10-14 17:54:01,039 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 15 [2024-10-14 17:54:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:01,043 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2024-10-14 17:54:01,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2024-10-14 17:54:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 17:54:01,044 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:01,044 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:01,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 17:54:01,244 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,SelfDestructingSolverStorable9 [2024-10-14 17:54:01,245 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:01,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:01,245 INFO L85 PathProgramCache]: Analyzing trace with hash -328431107, now seen corresponding path program 1 times [2024-10-14 17:54:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:01,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66305328] [2024-10-14 17:54:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:01,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66305328] [2024-10-14 17:54:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66305328] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166012069] [2024-10-14 17:54:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:01,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:01,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:01,309 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) [2024-10-14 17:54:01,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 17:54:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:01,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 17:54:01,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:01,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166012069] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:01,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:01,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-10-14 17:54:01,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899606165] [2024-10-14 17:54:01,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:01,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 17:54:01,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:01,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 17:54:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-14 17:54:01,460 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:01,561 INFO L93 Difference]: Finished difference Result 345 states and 504 transitions. [2024-10-14 17:54:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 17:54:01,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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 15 [2024-10-14 17:54:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:01,563 INFO L225 Difference]: With dead ends: 345 [2024-10-14 17:54:01,563 INFO L226 Difference]: Without dead ends: 345 [2024-10-14 17:54:01,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:54:01,564 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 116 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:01,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 299 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-10-14 17:54:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 297. [2024-10-14 17:54:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 285 states have (on average 1.5789473684210527) internal successors, (450), 296 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 450 transitions. [2024-10-14 17:54:01,571 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 450 transitions. Word has length 15 [2024-10-14 17:54:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:01,571 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 450 transitions. [2024-10-14 17:54:01,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 450 transitions. [2024-10-14 17:54:01,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 17:54:01,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:01,572 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:01,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 17:54:01,776 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,SelfDestructingSolverStorable10 [2024-10-14 17:54:01,777 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:01,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash -31770997, now seen corresponding path program 2 times [2024-10-14 17:54:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387412002] [2024-10-14 17:54:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 17:54:01,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:01,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387412002] [2024-10-14 17:54:01,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387412002] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:01,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423152738] [2024-10-14 17:54:01,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:54:01,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:01,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:01,847 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) [2024-10-14 17:54:01,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 17:54:01,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 17:54:01,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:54:01,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 17:54:01,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:01,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:01,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423152738] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:01,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:01,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 8 [2024-10-14 17:54:01,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646344472] [2024-10-14 17:54:01,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:01,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 17:54:01,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:01,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 17:54:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 17:54:01,989 INFO L87 Difference]: Start difference. First operand 297 states and 450 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:02,121 INFO L93 Difference]: Finished difference Result 345 states and 492 transitions. [2024-10-14 17:54:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 17:54:02,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-14 17:54:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:02,123 INFO L225 Difference]: With dead ends: 345 [2024-10-14 17:54:02,123 INFO L226 Difference]: Without dead ends: 345 [2024-10-14 17:54:02,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-10-14 17:54:02,124 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 234 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:02,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 365 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-10-14 17:54:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 297. [2024-10-14 17:54:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 285 states have (on average 1.5368421052631578) internal successors, (438), 296 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 438 transitions. [2024-10-14 17:54:02,132 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 438 transitions. Word has length 21 [2024-10-14 17:54:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:02,133 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 438 transitions. [2024-10-14 17:54:02,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 438 transitions. [2024-10-14 17:54:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-14 17:54:02,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:02,135 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:02,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 17:54:02,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:02,336 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:02,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash 441010180, now seen corresponding path program 1 times [2024-10-14 17:54:02,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:02,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023529654] [2024-10-14 17:54:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:02,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:02,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:02,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023529654] [2024-10-14 17:54:02,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023529654] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:02,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834255272] [2024-10-14 17:54:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:02,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:02,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:02,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:02,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 17:54:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:02,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 17:54:02,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:02,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:02,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834255272] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:02,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-10-14 17:54:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982925141] [2024-10-14 17:54:02,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:02,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:54:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:54:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:54:02,591 INFO L87 Difference]: Start difference. First operand 297 states and 438 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:02,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:02,674 INFO L93 Difference]: Finished difference Result 860 states and 1258 transitions. [2024-10-14 17:54:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:54:02,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2024-10-14 17:54:02,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:02,678 INFO L225 Difference]: With dead ends: 860 [2024-10-14 17:54:02,678 INFO L226 Difference]: Without dead ends: 860 [2024-10-14 17:54:02,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:54:02,679 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 161 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:02,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 139 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:02,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2024-10-14 17:54:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 745. [2024-10-14 17:54:02,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 733 states have (on average 1.5225102319236017) internal successors, (1116), 744 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1116 transitions. [2024-10-14 17:54:02,693 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1116 transitions. Word has length 23 [2024-10-14 17:54:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:02,693 INFO L471 AbstractCegarLoop]: Abstraction has 745 states and 1116 transitions. [2024-10-14 17:54:02,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1116 transitions. [2024-10-14 17:54:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-14 17:54:02,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:02,694 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:02,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 17:54:02,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:02,895 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:02,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1578309937, now seen corresponding path program 1 times [2024-10-14 17:54:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:02,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011982945] [2024-10-14 17:54:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:02,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:54:02,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011982945] [2024-10-14 17:54:02,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011982945] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131836693] [2024-10-14 17:54:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:02,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:02,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:02,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:02,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 17:54:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:03,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 17:54:03,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:54:03,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:54:03,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131836693] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:03,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:03,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-14 17:54:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795254345] [2024-10-14 17:54:03,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:03,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:54:03,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:03,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:54:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:54:03,111 INFO L87 Difference]: Start difference. First operand 745 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:03,183 INFO L93 Difference]: Finished difference Result 362 states and 503 transitions. [2024-10-14 17:54:03,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 17:54:03,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2024-10-14 17:54:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:03,185 INFO L225 Difference]: With dead ends: 362 [2024-10-14 17:54:03,185 INFO L226 Difference]: Without dead ends: 362 [2024-10-14 17:54:03,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:54:03,186 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 76 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:03,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 353 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:03,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-10-14 17:54:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 322. [2024-10-14 17:54:03,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 310 states have (on average 1.4806451612903226) internal successors, (459), 321 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 459 transitions. [2024-10-14 17:54:03,193 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 459 transitions. Word has length 25 [2024-10-14 17:54:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:03,193 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 459 transitions. [2024-10-14 17:54:03,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:03,194 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 459 transitions. [2024-10-14 17:54:03,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 17:54:03,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:03,194 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:03,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 17:54:03,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-14 17:54:03,395 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:03,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:03,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1970646423, now seen corresponding path program 1 times [2024-10-14 17:54:03,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:03,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704836799] [2024-10-14 17:54:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:03,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:03,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:03,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704836799] [2024-10-14 17:54:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704836799] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:03,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524982155] [2024-10-14 17:54:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:03,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:03,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:03,516 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:03,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 17:54:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:03,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 17:54:03,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:03,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:03,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524982155] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:03,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:03,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-10-14 17:54:03,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688121639] [2024-10-14 17:54:03,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:03,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:54:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:54:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:54:03,685 INFO L87 Difference]: Start difference. First operand 322 states and 459 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:03,850 INFO L93 Difference]: Finished difference Result 931 states and 1257 transitions. [2024-10-14 17:54:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 17:54:03,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-14 17:54:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:03,854 INFO L225 Difference]: With dead ends: 931 [2024-10-14 17:54:03,854 INFO L226 Difference]: Without dead ends: 931 [2024-10-14 17:54:03,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-10-14 17:54:03,856 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 275 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:03,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 388 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-10-14 17:54:03,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 826. [2024-10-14 17:54:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 814 states have (on average 1.4336609336609336) internal successors, (1167), 825 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1167 transitions. [2024-10-14 17:54:03,872 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1167 transitions. Word has length 26 [2024-10-14 17:54:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:03,873 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1167 transitions. [2024-10-14 17:54:03,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1167 transitions. [2024-10-14 17:54:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-14 17:54:03,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:03,874 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:03,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-14 17:54:04,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 17:54:04,075 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:04,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1812095213, now seen corresponding path program 1 times [2024-10-14 17:54:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694311699] [2024-10-14 17:54:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-14 17:54:04,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694311699] [2024-10-14 17:54:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694311699] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839503227] [2024-10-14 17:54:04,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:04,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:04,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:04,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:04,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 17:54:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:04,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 17:54:04,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:04,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:54:04,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839503227] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:04,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:04,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 13 [2024-10-14 17:54:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508608805] [2024-10-14 17:54:04,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:04,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 17:54:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:04,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 17:54:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:54:04,517 INFO L87 Difference]: Start difference. First operand 826 states and 1167 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:04,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:04,862 INFO L93 Difference]: Finished difference Result 1561 states and 2123 transitions. [2024-10-14 17:54:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-14 17:54:04,862 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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 50 [2024-10-14 17:54:04,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:04,867 INFO L225 Difference]: With dead ends: 1561 [2024-10-14 17:54:04,867 INFO L226 Difference]: Without dead ends: 1561 [2024-10-14 17:54:04,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2024-10-14 17:54:04,868 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 314 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:04,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 590 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:54:04,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2024-10-14 17:54:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 910. [2024-10-14 17:54:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 898 states have (on average 1.455456570155902) internal successors, (1307), 909 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1307 transitions. [2024-10-14 17:54:04,889 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1307 transitions. Word has length 50 [2024-10-14 17:54:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:04,890 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1307 transitions. [2024-10-14 17:54:04,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1307 transitions. [2024-10-14 17:54:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-14 17:54:04,893 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:04,894 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:04,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 17:54:05,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:05,095 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:05,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:05,095 INFO L85 PathProgramCache]: Analyzing trace with hash 447476165, now seen corresponding path program 1 times [2024-10-14 17:54:05,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:05,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358418575] [2024-10-14 17:54:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:05,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-14 17:54:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358418575] [2024-10-14 17:54:05,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358418575] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095132817] [2024-10-14 17:54:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:05,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:05,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:05,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:05,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 17:54:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:05,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 17:54:05,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 17:54:05,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-14 17:54:05,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095132817] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:05,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:54:05,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2024-10-14 17:54:05,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294604226] [2024-10-14 17:54:05,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:54:05,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:54:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:54:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:54:05,444 INFO L87 Difference]: Start difference. First operand 910 states and 1307 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:05,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:05,560 INFO L93 Difference]: Finished difference Result 1567 states and 2191 transitions. [2024-10-14 17:54:05,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 17:54:05,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 58 [2024-10-14 17:54:05,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:05,566 INFO L225 Difference]: With dead ends: 1567 [2024-10-14 17:54:05,567 INFO L226 Difference]: Without dead ends: 1567 [2024-10-14 17:54:05,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-14 17:54:05,567 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 59 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:05,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 275 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2024-10-14 17:54:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1507. [2024-10-14 17:54:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1495 states have (on average 1.4294314381270903) internal successors, (2137), 1506 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2137 transitions. [2024-10-14 17:54:05,596 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2137 transitions. Word has length 58 [2024-10-14 17:54:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:05,596 INFO L471 AbstractCegarLoop]: Abstraction has 1507 states and 2137 transitions. [2024-10-14 17:54:05,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2137 transitions. [2024-10-14 17:54:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-14 17:54:05,597 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:05,598 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:05,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 17:54:05,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 17:54:05,799 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:05,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1422576838, now seen corresponding path program 1 times [2024-10-14 17:54:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:05,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071478794] [2024-10-14 17:54:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:05,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 49 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-14 17:54:05,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:05,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071478794] [2024-10-14 17:54:05,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071478794] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:05,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005756791] [2024-10-14 17:54:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:05,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:05,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:05,899 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:05,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 17:54:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:06,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 17:54:06,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 17:54:06,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-14 17:54:06,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005756791] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:06,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:06,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2024-10-14 17:54:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019793020] [2024-10-14 17:54:06,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:06,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 17:54:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 17:54:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-10-14 17:54:06,160 INFO L87 Difference]: Start difference. First operand 1507 states and 2137 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:07,204 INFO L93 Difference]: Finished difference Result 6282 states and 8735 transitions. [2024-10-14 17:54:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-14 17:54:07,205 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 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 58 [2024-10-14 17:54:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:07,225 INFO L225 Difference]: With dead ends: 6282 [2024-10-14 17:54:07,226 INFO L226 Difference]: Without dead ends: 6282 [2024-10-14 17:54:07,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2024-10-14 17:54:07,228 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 410 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:07,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 534 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 17:54:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2024-10-14 17:54:07,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 4284. [2024-10-14 17:54:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 4273 states have (on average 1.4530774631406507) internal successors, (6209), 4283 states have internal predecessors, (6209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6209 transitions. [2024-10-14 17:54:07,342 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6209 transitions. Word has length 58 [2024-10-14 17:54:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:07,342 INFO L471 AbstractCegarLoop]: Abstraction has 4284 states and 6209 transitions. [2024-10-14 17:54:07,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6209 transitions. [2024-10-14 17:54:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-14 17:54:07,345 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:07,345 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:07,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 17:54:07,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 17:54:07,548 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:07,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash -175746809, now seen corresponding path program 1 times [2024-10-14 17:54:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211586198] [2024-10-14 17:54:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-14 17:54:07,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:07,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211586198] [2024-10-14 17:54:07,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211586198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:07,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010889891] [2024-10-14 17:54:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:07,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:07,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:07,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 17:54:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:07,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 17:54:07,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 17:54:07,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 17:54:07,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010889891] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:07,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:07,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-10-14 17:54:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132909973] [2024-10-14 17:54:07,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:07,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 17:54:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 17:54:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-10-14 17:54:07,935 INFO L87 Difference]: Start difference. First operand 4284 states and 6209 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:08,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:08,409 INFO L93 Difference]: Finished difference Result 5565 states and 7637 transitions. [2024-10-14 17:54:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-14 17:54:08,410 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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 61 [2024-10-14 17:54:08,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:08,428 INFO L225 Difference]: With dead ends: 5565 [2024-10-14 17:54:08,428 INFO L226 Difference]: Without dead ends: 5565 [2024-10-14 17:54:08,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2024-10-14 17:54:08,429 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 318 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:08,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1183 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:54:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2024-10-14 17:54:08,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 4880. [2024-10-14 17:54:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 4869 states have (on average 1.4074758677346477) internal successors, (6853), 4879 states have internal predecessors, (6853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 6853 transitions. [2024-10-14 17:54:08,590 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 6853 transitions. Word has length 61 [2024-10-14 17:54:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:08,591 INFO L471 AbstractCegarLoop]: Abstraction has 4880 states and 6853 transitions. [2024-10-14 17:54:08,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:08,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 6853 transitions. [2024-10-14 17:54:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-14 17:54:08,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:08,593 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:08,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 17:54:08,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:08,794 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:08,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:08,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1446605301, now seen corresponding path program 1 times [2024-10-14 17:54:08,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:08,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426205530] [2024-10-14 17:54:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:08,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-14 17:54:08,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:08,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426205530] [2024-10-14 17:54:08,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426205530] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:08,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016655161] [2024-10-14 17:54:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:08,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:08,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:08,945 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:08,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 17:54:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:09,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 17:54:09,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:09,132 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 101 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 17:54:09,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 17:54:09,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016655161] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:09,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:09,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2024-10-14 17:54:09,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009866052] [2024-10-14 17:54:09,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:09,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 17:54:09,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 17:54:09,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-10-14 17:54:09,205 INFO L87 Difference]: Start difference. First operand 4880 states and 6853 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:09,634 INFO L93 Difference]: Finished difference Result 3977 states and 5291 transitions. [2024-10-14 17:54:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-14 17:54:09,635 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 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 62 [2024-10-14 17:54:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:09,646 INFO L225 Difference]: With dead ends: 3977 [2024-10-14 17:54:09,646 INFO L226 Difference]: Without dead ends: 3977 [2024-10-14 17:54:09,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2024-10-14 17:54:09,647 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 228 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:09,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 746 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:54:09,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2024-10-14 17:54:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 2672. [2024-10-14 17:54:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2661 states have (on average 1.3363397219090567) internal successors, (3556), 2671 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3556 transitions. [2024-10-14 17:54:09,694 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3556 transitions. Word has length 62 [2024-10-14 17:54:09,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:09,694 INFO L471 AbstractCegarLoop]: Abstraction has 2672 states and 3556 transitions. [2024-10-14 17:54:09,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:09,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3556 transitions. [2024-10-14 17:54:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 17:54:09,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:09,695 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:09,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-14 17:54:09,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:09,896 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:09,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1221625822, now seen corresponding path program 1 times [2024-10-14 17:54:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:09,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088393284] [2024-10-14 17:54:09,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:09,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-14 17:54:10,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:10,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088393284] [2024-10-14 17:54:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088393284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102830415] [2024-10-14 17:54:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:10,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:10,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:10,052 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:10,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 17:54:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:10,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 17:54:10,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 17:54:10,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 17:54:10,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102830415] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:10,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:10,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-10-14 17:54:10,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542692037] [2024-10-14 17:54:10,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:10,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 17:54:10,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:10,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 17:54:10,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:54:10,273 INFO L87 Difference]: Start difference. First operand 2672 states and 3556 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:10,503 INFO L93 Difference]: Finished difference Result 2698 states and 3537 transitions. [2024-10-14 17:54:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 17:54:10,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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 63 [2024-10-14 17:54:10,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:10,515 INFO L225 Difference]: With dead ends: 2698 [2024-10-14 17:54:10,515 INFO L226 Difference]: Without dead ends: 2698 [2024-10-14 17:54:10,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2024-10-14 17:54:10,516 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 103 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:10,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 637 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2024-10-14 17:54:10,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1988. [2024-10-14 17:54:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1977 states have (on average 1.3373798684876075) internal successors, (2644), 1987 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2644 transitions. [2024-10-14 17:54:10,546 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2644 transitions. Word has length 63 [2024-10-14 17:54:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:10,546 INFO L471 AbstractCegarLoop]: Abstraction has 1988 states and 2644 transitions. [2024-10-14 17:54:10,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2644 transitions. [2024-10-14 17:54:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 17:54:10,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:10,547 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:10,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-14 17:54:10,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-14 17:54:10,748 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:10,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2122980990, now seen corresponding path program 1 times [2024-10-14 17:54:10,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:10,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74005881] [2024-10-14 17:54:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:10,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 17:54:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:10,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74005881] [2024-10-14 17:54:10,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74005881] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:10,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981228575] [2024-10-14 17:54:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:10,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:10,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:10,852 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:10,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 17:54:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:10,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 17:54:10,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 17:54:11,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-10-14 17:54:11,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981228575] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:11,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:11,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-14 17:54:11,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624626230] [2024-10-14 17:54:11,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:11,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 17:54:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:11,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 17:54:11,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:54:11,083 INFO L87 Difference]: Start difference. First operand 1988 states and 2644 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:11,162 INFO L93 Difference]: Finished difference Result 1984 states and 2613 transitions. [2024-10-14 17:54:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:54:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-14 17:54:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:11,172 INFO L225 Difference]: With dead ends: 1984 [2024-10-14 17:54:11,172 INFO L226 Difference]: Without dead ends: 1984 [2024-10-14 17:54:11,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-14 17:54:11,173 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 95 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:11,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 211 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:11,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2024-10-14 17:54:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1977. [2024-10-14 17:54:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1966 states have (on average 1.3280773143438453) internal successors, (2611), 1976 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2611 transitions. [2024-10-14 17:54:11,225 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2611 transitions. Word has length 63 [2024-10-14 17:54:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:11,225 INFO L471 AbstractCegarLoop]: Abstraction has 1977 states and 2611 transitions. [2024-10-14 17:54:11,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2611 transitions. [2024-10-14 17:54:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-14 17:54:11,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:11,227 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:11,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-14 17:54:11,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-14 17:54:11,428 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:11,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:11,428 INFO L85 PathProgramCache]: Analyzing trace with hash -974106542, now seen corresponding path program 1 times [2024-10-14 17:54:11,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:11,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094693457] [2024-10-14 17:54:11,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:11,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 17:54:11,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:11,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094693457] [2024-10-14 17:54:11,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094693457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:11,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897791809] [2024-10-14 17:54:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:11,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:11,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:11,630 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:11,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 17:54:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:11,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 17:54:11,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:11,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-14 17:54:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 17:54:11,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-10-14 17:54:12,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897791809] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:12,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:12,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-10-14 17:54:12,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434355115] [2024-10-14 17:54:12,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:12,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:54:12,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:12,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:54:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:54:12,232 INFO L87 Difference]: Start difference. First operand 1977 states and 2611 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:12,485 INFO L93 Difference]: Finished difference Result 3506 states and 4583 transitions. [2024-10-14 17:54:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 17:54:12,486 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 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 68 [2024-10-14 17:54:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:12,491 INFO L225 Difference]: With dead ends: 3506 [2024-10-14 17:54:12,491 INFO L226 Difference]: Without dead ends: 3506 [2024-10-14 17:54:12,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2024-10-14 17:54:12,492 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 508 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:12,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 380 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:54:12,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2024-10-14 17:54:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 2841. [2024-10-14 17:54:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2830 states have (on average 1.3445229681978799) internal successors, (3805), 2840 states have internal predecessors, (3805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 3805 transitions. [2024-10-14 17:54:12,530 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 3805 transitions. Word has length 68 [2024-10-14 17:54:12,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:12,531 INFO L471 AbstractCegarLoop]: Abstraction has 2841 states and 3805 transitions. [2024-10-14 17:54:12,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:12,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 3805 transitions. [2024-10-14 17:54:12,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-14 17:54:12,532 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:12,532 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 8, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:12,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 17:54:12,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:12,737 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:12,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:12,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1866491219, now seen corresponding path program 1 times [2024-10-14 17:54:12,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:12,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840022483] [2024-10-14 17:54:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:12,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-14 17:54:12,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:12,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840022483] [2024-10-14 17:54:12,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840022483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:54:12,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:54:12,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 17:54:12,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968058853] [2024-10-14 17:54:12,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:54:12,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:54:12,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:54:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:54:12,870 INFO L87 Difference]: Start difference. First operand 2841 states and 3805 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:12,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:12,961 INFO L93 Difference]: Finished difference Result 4489 states and 6061 transitions. [2024-10-14 17:54:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 17:54:12,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 87 [2024-10-14 17:54:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:12,969 INFO L225 Difference]: With dead ends: 4489 [2024-10-14 17:54:12,969 INFO L226 Difference]: Without dead ends: 4489 [2024-10-14 17:54:12,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:54:12,970 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 84 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:12,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 247 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4489 states. [2024-10-14 17:54:13,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4489 to 2967. [2024-10-14 17:54:13,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2956 states have (on average 1.3501353179972937) internal successors, (3991), 2966 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3991 transitions. [2024-10-14 17:54:13,025 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3991 transitions. Word has length 87 [2024-10-14 17:54:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:13,028 INFO L471 AbstractCegarLoop]: Abstraction has 2967 states and 3991 transitions. [2024-10-14 17:54:13,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:13,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3991 transitions. [2024-10-14 17:54:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-14 17:54:13,030 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:13,030 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:13,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-14 17:54:13,030 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:13,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:13,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1341743452, now seen corresponding path program 1 times [2024-10-14 17:54:13,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:13,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342641080] [2024-10-14 17:54:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:13,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 61 proven. 147 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-14 17:54:13,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:13,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342641080] [2024-10-14 17:54:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342641080] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418215128] [2024-10-14 17:54:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:13,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:13,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:13,235 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:13,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 17:54:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:13,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 17:54:13,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-10-14 17:54:13,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:54:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418215128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:54:13,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:54:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-10-14 17:54:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327143883] [2024-10-14 17:54:13,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:54:13,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:54:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:13,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:54:13,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:54:13,429 INFO L87 Difference]: Start difference. First operand 2967 states and 3991 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:13,455 INFO L93 Difference]: Finished difference Result 3319 states and 4327 transitions. [2024-10-14 17:54:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:54:13,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 95 [2024-10-14 17:54:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:13,460 INFO L225 Difference]: With dead ends: 3319 [2024-10-14 17:54:13,460 INFO L226 Difference]: Without dead ends: 3319 [2024-10-14 17:54:13,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:54:13,461 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 48 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:13,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 117 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:54:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2024-10-14 17:54:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3003. [2024-10-14 17:54:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2992 states have (on average 1.3245320855614973) internal successors, (3963), 3002 states have internal predecessors, (3963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 3963 transitions. [2024-10-14 17:54:13,502 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 3963 transitions. Word has length 95 [2024-10-14 17:54:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:13,502 INFO L471 AbstractCegarLoop]: Abstraction has 3003 states and 3963 transitions. [2024-10-14 17:54:13,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:13,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 3963 transitions. [2024-10-14 17:54:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-14 17:54:13,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:13,504 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:13,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-14 17:54:13,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:13,709 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:13,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1656693807, now seen corresponding path program 1 times [2024-10-14 17:54:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:13,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148163405] [2024-10-14 17:54:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 79 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-10-14 17:54:13,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148163405] [2024-10-14 17:54:13,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148163405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:13,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848141463] [2024-10-14 17:54:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:13,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:13,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:13,874 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:13,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 17:54:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:14,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 17:54:14,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 73 proven. 65 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-10-14 17:54:14,123 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 73 proven. 65 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-10-14 17:54:14,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848141463] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:14,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:14,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-10-14 17:54:14,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601585966] [2024-10-14 17:54:14,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:14,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 17:54:14,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:14,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 17:54:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-14 17:54:14,235 INFO L87 Difference]: Start difference. First operand 3003 states and 3963 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:14,481 INFO L93 Difference]: Finished difference Result 2739 states and 3329 transitions. [2024-10-14 17:54:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 17:54:14,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 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 97 [2024-10-14 17:54:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:14,486 INFO L225 Difference]: With dead ends: 2739 [2024-10-14 17:54:14,486 INFO L226 Difference]: Without dead ends: 2739 [2024-10-14 17:54:14,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-10-14 17:54:14,487 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 160 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:14,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1227 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:54:14,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2024-10-14 17:54:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2043. [2024-10-14 17:54:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 2033 states have (on average 1.2395474667978357) internal successors, (2520), 2042 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 2520 transitions. [2024-10-14 17:54:14,518 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 2520 transitions. Word has length 97 [2024-10-14 17:54:14,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:14,519 INFO L471 AbstractCegarLoop]: Abstraction has 2043 states and 2520 transitions. [2024-10-14 17:54:14,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 2520 transitions. [2024-10-14 17:54:14,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-14 17:54:14,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:14,522 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:14,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-14 17:54:14,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-14 17:54:14,727 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:14,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1917738987, now seen corresponding path program 1 times [2024-10-14 17:54:14,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:14,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503822956] [2024-10-14 17:54:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:14,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 117 proven. 8 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-10-14 17:54:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503822956] [2024-10-14 17:54:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503822956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419463388] [2024-10-14 17:54:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:14,815 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:14,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 17:54:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:14,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 17:54:14,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:15,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:15,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419463388] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:15,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:15,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 5 [2024-10-14 17:54:15,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363582608] [2024-10-14 17:54:15,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:15,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:54:15,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:15,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:54:15,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:54:15,206 INFO L87 Difference]: Start difference. First operand 2043 states and 2520 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:15,434 INFO L93 Difference]: Finished difference Result 2884 states and 3504 transitions. [2024-10-14 17:54:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 17:54:15,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 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 107 [2024-10-14 17:54:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:15,438 INFO L225 Difference]: With dead ends: 2884 [2024-10-14 17:54:15,438 INFO L226 Difference]: Without dead ends: 2884 [2024-10-14 17:54:15,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:54:15,439 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 287 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:15,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 362 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:54:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2024-10-14 17:54:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2044. [2024-10-14 17:54:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2035 states have (on average 1.2398034398034399) internal successors, (2523), 2043 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2523 transitions. [2024-10-14 17:54:15,468 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2523 transitions. Word has length 107 [2024-10-14 17:54:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:15,468 INFO L471 AbstractCegarLoop]: Abstraction has 2044 states and 2523 transitions. [2024-10-14 17:54:15,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:15,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2523 transitions. [2024-10-14 17:54:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-14 17:54:15,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:15,470 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:15,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-14 17:54:15,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-14 17:54:15,671 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:15,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1917738988, now seen corresponding path program 1 times [2024-10-14 17:54:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177388007] [2024-10-14 17:54:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:15,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177388007] [2024-10-14 17:54:15,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177388007] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:15,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301950493] [2024-10-14 17:54:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:15,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:15,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:15,994 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:15,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 17:54:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:16,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 17:54:16,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:16,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-14 17:54:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:16,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301950493] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:16,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:16,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2024-10-14 17:54:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109591318] [2024-10-14 17:54:16,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:16,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 17:54:16,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 17:54:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-10-14 17:54:16,850 INFO L87 Difference]: Start difference. First operand 2044 states and 2523 transitions. Second operand has 14 states, 13 states have (on average 12.76923076923077) internal successors, (166), 14 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:17,446 INFO L93 Difference]: Finished difference Result 5871 states and 7186 transitions. [2024-10-14 17:54:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-14 17:54:17,447 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 12.76923076923077) internal successors, (166), 14 states have internal predecessors, (166), 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 107 [2024-10-14 17:54:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:17,455 INFO L225 Difference]: With dead ends: 5871 [2024-10-14 17:54:17,455 INFO L226 Difference]: Without dead ends: 5871 [2024-10-14 17:54:17,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930 [2024-10-14 17:54:17,457 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 1202 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:17,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 731 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 17:54:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2024-10-14 17:54:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 2157. [2024-10-14 17:54:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 2148 states have (on average 1.2458100558659218) internal successors, (2676), 2156 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2676 transitions. [2024-10-14 17:54:17,523 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2676 transitions. Word has length 107 [2024-10-14 17:54:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:17,524 INFO L471 AbstractCegarLoop]: Abstraction has 2157 states and 2676 transitions. [2024-10-14 17:54:17,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 12.76923076923077) internal successors, (166), 14 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2676 transitions. [2024-10-14 17:54:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-14 17:54:17,526 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:17,526 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:17,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-14 17:54:17,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-14 17:54:17,727 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:17,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash -679634941, now seen corresponding path program 1 times [2024-10-14 17:54:17,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:17,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718566267] [2024-10-14 17:54:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:17,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 28 proven. 213 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-10-14 17:54:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718566267] [2024-10-14 17:54:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718566267] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193233277] [2024-10-14 17:54:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:17,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:17,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:17,964 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:17,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-14 17:54:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:18,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 17:54:18,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 133 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-10-14 17:54:18,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 133 proven. 12 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-10-14 17:54:18,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193233277] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:18,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:18,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 15 [2024-10-14 17:54:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181590718] [2024-10-14 17:54:18,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:18,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 17:54:18,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 17:54:18,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-14 17:54:18,383 INFO L87 Difference]: Start difference. First operand 2157 states and 2676 transitions. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:21,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:21,249 INFO L93 Difference]: Finished difference Result 10214 states and 12253 transitions. [2024-10-14 17:54:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-10-14 17:54:21,249 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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 108 [2024-10-14 17:54:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:21,260 INFO L225 Difference]: With dead ends: 10214 [2024-10-14 17:54:21,260 INFO L226 Difference]: Without dead ends: 10214 [2024-10-14 17:54:21,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5368 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2780, Invalid=12226, Unknown=0, NotChecked=0, Total=15006 [2024-10-14 17:54:21,265 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 584 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 1944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:21,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 3264 Invalid, 1944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-14 17:54:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10214 states. [2024-10-14 17:54:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10214 to 2731. [2024-10-14 17:54:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2722 states have (on average 1.2296105804555475) internal successors, (3347), 2730 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 3347 transitions. [2024-10-14 17:54:21,324 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 3347 transitions. Word has length 108 [2024-10-14 17:54:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:21,324 INFO L471 AbstractCegarLoop]: Abstraction has 2731 states and 3347 transitions. [2024-10-14 17:54:21,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 3347 transitions. [2024-10-14 17:54:21,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-14 17:54:21,327 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:21,327 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:21,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-14 17:54:21,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-14 17:54:21,532 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:21,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash 406220416, now seen corresponding path program 1 times [2024-10-14 17:54:21,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:21,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242606412] [2024-10-14 17:54:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:21,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242606412] [2024-10-14 17:54:21,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242606412] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701875701] [2024-10-14 17:54:21,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:21,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:21,734 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:21,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-14 17:54:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:21,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 17:54:21,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:22,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 188 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:22,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701875701] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:22,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:22,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-14 17:54:22,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892747754] [2024-10-14 17:54:22,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:22,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:54:22,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:54:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:54:22,163 INFO L87 Difference]: Start difference. First operand 2731 states and 3347 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:22,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:22,370 INFO L93 Difference]: Finished difference Result 5518 states and 6716 transitions. [2024-10-14 17:54:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 17:54:22,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 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 109 [2024-10-14 17:54:22,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:22,376 INFO L225 Difference]: With dead ends: 5518 [2024-10-14 17:54:22,376 INFO L226 Difference]: Without dead ends: 5518 [2024-10-14 17:54:22,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 220 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:54:22,377 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 469 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:22,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 218 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2024-10-14 17:54:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 2732. [2024-10-14 17:54:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2732 states, 2723 states have (on average 1.2295262578038928) internal successors, (3348), 2731 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2732 states to 2732 states and 3348 transitions. [2024-10-14 17:54:22,418 INFO L78 Accepts]: Start accepts. Automaton has 2732 states and 3348 transitions. Word has length 109 [2024-10-14 17:54:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:22,419 INFO L471 AbstractCegarLoop]: Abstraction has 2732 states and 3348 transitions. [2024-10-14 17:54:22,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2732 states and 3348 transitions. [2024-10-14 17:54:22,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-14 17:54:22,421 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:22,421 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:22,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-14 17:54:22,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:22,622 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:22,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:22,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1505248649, now seen corresponding path program 1 times [2024-10-14 17:54:22,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:22,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636753262] [2024-10-14 17:54:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:22,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 41 proven. 275 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-14 17:54:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636753262] [2024-10-14 17:54:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636753262] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126066955] [2024-10-14 17:54:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:23,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:23,962 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:23,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-14 17:54:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:24,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 17:54:24,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:24,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 17:54:24,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 17:54:24,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:24,528 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 19 treesize of output 15 [2024-10-14 17:54:24,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:24,534 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 19 treesize of output 15 [2024-10-14 17:54:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-10-14 17:54:24,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:24,706 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 12 treesize of output 10 [2024-10-14 17:54:24,711 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 18 treesize of output 16 [2024-10-14 17:54:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2024-10-14 17:54:25,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126066955] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:25,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:25,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 6] total 21 [2024-10-14 17:54:25,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764094846] [2024-10-14 17:54:25,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:25,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-14 17:54:25,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-14 17:54:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-10-14 17:54:25,022 INFO L87 Difference]: Start difference. First operand 2732 states and 3348 transitions. Second operand has 22 states, 22 states have (on average 6.863636363636363) internal successors, (151), 21 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:27,580 INFO L93 Difference]: Finished difference Result 11993 states and 14432 transitions. [2024-10-14 17:54:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-14 17:54:27,580 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.863636363636363) internal successors, (151), 21 states have internal predecessors, (151), 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 112 [2024-10-14 17:54:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:27,591 INFO L225 Difference]: With dead ends: 11993 [2024-10-14 17:54:27,591 INFO L226 Difference]: Without dead ends: 11993 [2024-10-14 17:54:27,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=818, Invalid=3342, Unknown=0, NotChecked=0, Total=4160 [2024-10-14 17:54:27,593 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 1060 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:27,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1606 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 17:54:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11993 states. [2024-10-14 17:54:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11993 to 3722. [2024-10-14 17:54:27,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 3713 states have (on average 1.2243468893078373) internal successors, (4546), 3721 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 4546 transitions. [2024-10-14 17:54:27,683 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 4546 transitions. Word has length 112 [2024-10-14 17:54:27,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:27,684 INFO L471 AbstractCegarLoop]: Abstraction has 3722 states and 4546 transitions. [2024-10-14 17:54:27,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.863636363636363) internal successors, (151), 21 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:27,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 4546 transitions. [2024-10-14 17:54:27,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-14 17:54:27,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:27,692 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:27,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-14 17:54:27,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:27,893 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:27,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash 581930743, now seen corresponding path program 1 times [2024-10-14 17:54:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:27,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136633655] [2024-10-14 17:54:27,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:27,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:28,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:28,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136633655] [2024-10-14 17:54:28,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136633655] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:28,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643302651] [2024-10-14 17:54:28,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:28,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:28,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:28,204 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:28,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-14 17:54:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:28,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 17:54:28,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:28,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 17:54:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-10-14 17:54:28,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:28,655 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_~x1~0.base_28 Int)) (or (not (= (select |c_#valid| v_~x1~0.base_28) 0)) (= (store |c_#valid| v_~x1~0.base_28 0) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2024-10-14 17:54:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 97 trivial. 48 not checked. [2024-10-14 17:54:28,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643302651] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:28,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:28,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 7 [2024-10-14 17:54:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970680360] [2024-10-14 17:54:28,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:28,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 17:54:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 17:54:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2024-10-14 17:54:28,676 INFO L87 Difference]: Start difference. First operand 3722 states and 4546 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:29,090 INFO L93 Difference]: Finished difference Result 7028 states and 8598 transitions. [2024-10-14 17:54:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 17:54:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 113 [2024-10-14 17:54:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:29,109 INFO L225 Difference]: With dead ends: 7028 [2024-10-14 17:54:29,109 INFO L226 Difference]: Without dead ends: 7012 [2024-10-14 17:54:29,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=218, Unknown=1, NotChecked=32, Total=342 [2024-10-14 17:54:29,110 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 347 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 371 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:29,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 601 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 335 Invalid, 0 Unknown, 371 Unchecked, 0.3s Time] [2024-10-14 17:54:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7012 states. [2024-10-14 17:54:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7012 to 5532. [2024-10-14 17:54:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5523 states have (on average 1.2301285533224697) internal successors, (6794), 5531 states have internal predecessors, (6794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 6794 transitions. [2024-10-14 17:54:29,177 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 6794 transitions. Word has length 113 [2024-10-14 17:54:29,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:29,177 INFO L471 AbstractCegarLoop]: Abstraction has 5532 states and 6794 transitions. [2024-10-14 17:54:29,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:29,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 6794 transitions. [2024-10-14 17:54:29,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-14 17:54:29,181 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:29,182 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 8, 7, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:29,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-14 17:54:29,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:29,386 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:29,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:29,386 INFO L85 PathProgramCache]: Analyzing trace with hash 229534506, now seen corresponding path program 1 times [2024-10-14 17:54:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:29,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384245732] [2024-10-14 17:54:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 84 proven. 313 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 17:54:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384245732] [2024-10-14 17:54:29,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384245732] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:29,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589647841] [2024-10-14 17:54:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:29,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:29,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:29,943 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:29,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-14 17:54:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:30,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-14 17:54:30,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:30,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 17:54:30,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 17:54:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 70 proven. 291 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-14 17:54:30,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 70 proven. 291 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-14 17:54:30,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589647841] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:30,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:30,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 15 [2024-10-14 17:54:30,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425876498] [2024-10-14 17:54:30,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:30,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 17:54:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:30,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 17:54:30,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-10-14 17:54:30,771 INFO L87 Difference]: Start difference. First operand 5532 states and 6794 transitions. Second operand has 16 states, 16 states have (on average 10.1875) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:34,614 INFO L93 Difference]: Finished difference Result 50035 states and 59367 transitions. [2024-10-14 17:54:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-10-14 17:54:34,614 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.1875) internal successors, (163), 15 states have internal predecessors, (163), 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 113 [2024-10-14 17:54:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:34,742 INFO L225 Difference]: With dead ends: 50035 [2024-10-14 17:54:34,742 INFO L226 Difference]: Without dead ends: 50035 [2024-10-14 17:54:34,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7648 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2235, Invalid=16671, Unknown=0, NotChecked=0, Total=18906 [2024-10-14 17:54:34,747 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 2447 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:34,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2447 Valid, 2649 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 17:54:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50035 states. [2024-10-14 17:54:35,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50035 to 21225. [2024-10-14 17:54:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21225 states, 21216 states have (on average 1.2281768476621417) internal successors, (26057), 21224 states have internal predecessors, (26057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21225 states to 21225 states and 26057 transitions. [2024-10-14 17:54:35,131 INFO L78 Accepts]: Start accepts. Automaton has 21225 states and 26057 transitions. Word has length 113 [2024-10-14 17:54:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:35,131 INFO L471 AbstractCegarLoop]: Abstraction has 21225 states and 26057 transitions. [2024-10-14 17:54:35,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.1875) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 21225 states and 26057 transitions. [2024-10-14 17:54:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-14 17:54:35,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:35,144 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 8, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:35,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-14 17:54:35,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:35,349 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:35,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:35,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1491480397, now seen corresponding path program 1 times [2024-10-14 17:54:35,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:35,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990181900] [2024-10-14 17:54:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:35,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 335 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-14 17:54:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990181900] [2024-10-14 17:54:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990181900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643390015] [2024-10-14 17:54:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:35,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:35,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:35,517 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:35,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-14 17:54:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:35,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 17:54:35,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 335 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-14 17:54:35,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-14 17:54:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643390015] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:35,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-14 17:54:35,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 9 [2024-10-14 17:54:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882676716] [2024-10-14 17:54:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:54:35,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:54:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:54:35,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:54:35,835 INFO L87 Difference]: Start difference. First operand 21225 states and 26057 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:35,942 INFO L93 Difference]: Finished difference Result 12165 states and 14729 transitions. [2024-10-14 17:54:35,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:54:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 142 [2024-10-14 17:54:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:35,958 INFO L225 Difference]: With dead ends: 12165 [2024-10-14 17:54:35,958 INFO L226 Difference]: Without dead ends: 12165 [2024-10-14 17:54:35,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-14 17:54:35,961 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 63 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:35,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 218 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:35,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12165 states. [2024-10-14 17:54:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12165 to 11553. [2024-10-14 17:54:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11553 states, 11544 states have (on average 1.2155232155232156) internal successors, (14032), 11552 states have internal predecessors, (14032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:36,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11553 states to 11553 states and 14032 transitions. [2024-10-14 17:54:36,082 INFO L78 Accepts]: Start accepts. Automaton has 11553 states and 14032 transitions. Word has length 142 [2024-10-14 17:54:36,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:36,082 INFO L471 AbstractCegarLoop]: Abstraction has 11553 states and 14032 transitions. [2024-10-14 17:54:36,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:36,082 INFO L276 IsEmpty]: Start isEmpty. Operand 11553 states and 14032 transitions. [2024-10-14 17:54:36,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-14 17:54:36,090 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:36,090 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 14, 9, 9, 7, 6, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:36,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-14 17:54:36,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:36,291 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:36,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1341153838, now seen corresponding path program 2 times [2024-10-14 17:54:36,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:36,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095354399] [2024-10-14 17:54:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:36,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 335 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-10-14 17:54:36,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:36,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095354399] [2024-10-14 17:54:36,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095354399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:36,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146997993] [2024-10-14 17:54:36,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:54:36,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:36,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:36,476 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:36,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-14 17:54:36,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 17:54:36,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:54:36,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 17:54:36,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 290 proven. 109 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-14 17:54:36,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 290 proven. 109 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-14 17:54:36,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146997993] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:36,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:36,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-14 17:54:36,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091357995] [2024-10-14 17:54:36,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:36,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 17:54:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:36,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 17:54:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:54:36,892 INFO L87 Difference]: Start difference. First operand 11553 states and 14032 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 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) [2024-10-14 17:54:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:37,117 INFO L93 Difference]: Finished difference Result 10882 states and 12571 transitions. [2024-10-14 17:54:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 17:54:37,118 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 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) Word has length 147 [2024-10-14 17:54:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:37,129 INFO L225 Difference]: With dead ends: 10882 [2024-10-14 17:54:37,130 INFO L226 Difference]: Without dead ends: 10882 [2024-10-14 17:54:37,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2024-10-14 17:54:37,130 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 266 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:37,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1352 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:54:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10882 states. [2024-10-14 17:54:37,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10882 to 10029. [2024-10-14 17:54:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10029 states, 10020 states have (on average 1.1624750499001997) internal successors, (11648), 10028 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10029 states to 10029 states and 11648 transitions. [2024-10-14 17:54:37,282 INFO L78 Accepts]: Start accepts. Automaton has 10029 states and 11648 transitions. Word has length 147 [2024-10-14 17:54:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:37,282 INFO L471 AbstractCegarLoop]: Abstraction has 10029 states and 11648 transitions. [2024-10-14 17:54:37,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 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) [2024-10-14 17:54:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10029 states and 11648 transitions. [2024-10-14 17:54:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-10-14 17:54:37,289 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:37,290 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 10, 10, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:37,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-14 17:54:37,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-14 17:54:37,491 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:37,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash 649768937, now seen corresponding path program 1 times [2024-10-14 17:54:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:37,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119531705] [2024-10-14 17:54:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:37,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 104 proven. 679 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-14 17:54:38,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:38,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119531705] [2024-10-14 17:54:38,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119531705] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:38,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551749181] [2024-10-14 17:54:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:38,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:38,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:38,562 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:38,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-14 17:54:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:38,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-10-14 17:54:38,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:38,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 17:54:38,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-14 17:54:39,065 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-14 17:54:39,066 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 [2024-10-14 17:54:39,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-14 17:54:39,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-14 17:54:39,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-14 17:54:39,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-14 17:54:39,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-14 17:54:39,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-14 17:54:39,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-14 17:54:39,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-14 17:54:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 100 proven. 673 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-10-14 17:54:39,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:39,666 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~S~0.offset 4))) (and (forall ((v_ArrVal_1351 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| c_~x1~0.base v_ArrVal_1351) c_~S~0.base) .cse0) 0)) (forall ((v_ArrVal_1352 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| c_~x1~0.base v_ArrVal_1352) c_~S~0.base) .cse0) 0)))) is different from false [2024-10-14 17:54:40,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:40,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-14 17:54:40,297 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 36 treesize of output 24 [2024-10-14 17:54:40,301 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 11 treesize of output 7 [2024-10-14 17:54:40,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:40,317 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 22 treesize of output 23 [2024-10-14 17:54:40,319 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 17:54:40,321 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 [2024-10-14 17:54:40,668 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:40,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 46 [2024-10-14 17:54:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 90 proven. 443 refuted. 0 times theorem prover too weak. 56 trivial. 240 not checked. [2024-10-14 17:54:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551749181] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:40,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2024-10-14 17:54:40,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201701122] [2024-10-14 17:54:40,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:40,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-14 17:54:40,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:40,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-14 17:54:40,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=575, Unknown=1, NotChecked=48, Total=702 [2024-10-14 17:54:40,705 INFO L87 Difference]: Start difference. First operand 10029 states and 11648 transitions. Second operand has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:54:47,932 INFO L93 Difference]: Finished difference Result 68091 states and 78117 transitions. [2024-10-14 17:54:47,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2024-10-14 17:54:47,932 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 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 158 [2024-10-14 17:54:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:54:47,996 INFO L225 Difference]: With dead ends: 68091 [2024-10-14 17:54:47,997 INFO L226 Difference]: Without dead ends: 68091 [2024-10-14 17:54:48,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 318 SyntacticMatches, 14 SemanticMatches, 181 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13917 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=3825, Invalid=29120, Unknown=1, NotChecked=360, Total=33306 [2024-10-14 17:54:48,001 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 3779 mSDsluCounter, 4417 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3779 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 6441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3672 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 17:54:48,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3779 Valid, 4659 Invalid, 6441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2490 Invalid, 0 Unknown, 3672 Unchecked, 1.7s Time] [2024-10-14 17:54:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68091 states. [2024-10-14 17:54:48,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68091 to 26056. [2024-10-14 17:54:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26056 states, 26047 states have (on average 1.1600568203631896) internal successors, (30216), 26055 states have internal predecessors, (30216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26056 states to 26056 states and 30216 transitions. [2024-10-14 17:54:48,529 INFO L78 Accepts]: Start accepts. Automaton has 26056 states and 30216 transitions. Word has length 158 [2024-10-14 17:54:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:54:48,529 INFO L471 AbstractCegarLoop]: Abstraction has 26056 states and 30216 transitions. [2024-10-14 17:54:48,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:54:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 26056 states and 30216 transitions. [2024-10-14 17:54:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-10-14 17:54:48,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:54:48,540 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 10, 10, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:54:48,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-14 17:54:48,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-14 17:54:48,740 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-10-14 17:54:48,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:54:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1965008553, now seen corresponding path program 2 times [2024-10-14 17:54:48,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:54:48,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498202236] [2024-10-14 17:54:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:54:48,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:54:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:54:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 104 proven. 685 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-14 17:54:49,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:54:49,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498202236] [2024-10-14 17:54:49,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498202236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:54:49,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452642215] [2024-10-14 17:54:49,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:54:49,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:54:49,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:54:49,891 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:54:49,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-14 17:54:50,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 17:54:50,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:54:50,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-10-14 17:54:50,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:54:50,230 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 [2024-10-14 17:54:50,234 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 [2024-10-14 17:54:50,445 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-14 17:54:50,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-14 17:54:50,484 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 [2024-10-14 17:54:50,494 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 [2024-10-14 17:54:50,506 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 [2024-10-14 17:54:50,515 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 [2024-10-14 17:54:50,597 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 [2024-10-14 17:54:50,602 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 [2024-10-14 17:54:50,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-14 17:54:50,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-14 17:54:51,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 17:54:51,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-14 17:54:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 155 proven. 648 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-14 17:54:51,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:54:52,213 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:52,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2024-10-14 17:54:52,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:52,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2024-10-14 17:54:52,246 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 4 c_~x1~0.offset)) (.cse0 (+ c_~S~0.offset 4))) (and (or (forall ((v_arrayElimArr_4 (Array Int Int))) (or (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| c_~x1~0.base v_arrayElimArr_4) c_~S~0.base) .cse0)) 1) (not (= c_~S~0.base (select v_arrayElimArr_4 .cse1))))) (forall ((v_arrayElimArr_3 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#1.offset| c_~x1~0.base v_arrayElimArr_3) c_~S~0.base) .cse0) 0) (< (select v_arrayElimArr_3 .cse1) c_~S~0.offset)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.base| c_~x1~0.base v_arrayElimArr_4) c_~S~0.base) .cse0))) (or (= .cse2 0) (= (select |c_#valid| .cse2) 1) (not (= c_~S~0.base (select v_arrayElimArr_4 .cse1)))))))) is different from false [2024-10-14 17:54:53,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:53,342 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 27 treesize of output 28 [2024-10-14 17:54:53,347 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 46 treesize of output 34 [2024-10-14 17:54:53,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:53,355 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 22 treesize of output 23 [2024-10-14 17:54:53,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:53,366 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 23 treesize of output 25 [2024-10-14 17:54:53,372 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 36 treesize of output 24 [2024-10-14 17:54:53,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:53,382 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 17 treesize of output 19 [2024-10-14 17:54:53,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 17:54:53,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 40 [2024-10-14 17:54:53,472 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-14 17:54:53,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-10-14 17:54:53,481 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 6 treesize of output 4 [2024-10-14 17:54:54,267 INFO L349 Elim1Store]: treesize reduction 5, result has 93.8 percent of original size [2024-10-14 17:54:54,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 153 [2024-10-14 17:54:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 7 proven. 701 refuted. 0 times theorem prover too weak. 25 trivial. 96 not checked. [2024-10-14 17:54:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452642215] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:54:54,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:54:54,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 35 [2024-10-14 17:54:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437319089] [2024-10-14 17:54:54,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:54:54,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-14 17:54:54,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:54:54,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-14 17:54:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1060, Unknown=1, NotChecked=66, Total=1260 [2024-10-14 17:54:54,391 INFO L87 Difference]: Start difference. First operand 26056 states and 30216 transitions. Second operand has 36 states, 36 states have (on average 9.416666666666666) internal successors, (339), 35 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:55:02,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-14 17:55:07,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1]