./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 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/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.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 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 16:40:16,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 16:40:16,843 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 16:40:16,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 16:40:16,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 16:40:16,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 16:40:16,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 16:40:16,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 16:40:16,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 16:40:16,876 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 16:40:16,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 16:40:16,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 16:40:16,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 16:40:16,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 16:40:16,879 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 16:40:16,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 16:40:16,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 16:40:16,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 16:40:16,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 16:40:16,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 16:40:16,881 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 16:40:16,882 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 16:40:16,882 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 16:40:16,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 16:40:16,883 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 16:40:16,883 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 16:40:16,883 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 16:40:16,883 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 16:40:16,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 16:40:16,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 16:40:16,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 16:40:16,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 16:40:16,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 16:40:16,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 16:40:16,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 16:40:16,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 16:40:16,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 16:40:16,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 16:40:16,886 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 16:40:16,886 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 16:40:16,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 16:40:16,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 16:40:16,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2024-10-24 16:40:17,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 16:40:17,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 16:40:17,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 16:40:17,107 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 16:40:17,107 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 16:40:17,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-10-24 16:40:18,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 16:40:18,459 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 16:40:18,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-10-24 16:40:18,466 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bd32f43/ba2983bfbc0c45cda0fd854b08fa7645/FLAG2ba2f2c59 [2024-10-24 16:40:18,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bd32f43/ba2983bfbc0c45cda0fd854b08fa7645 [2024-10-24 16:40:18,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 16:40:18,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 16:40:18,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 16:40:18,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 16:40:18,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 16:40:18,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:40:18" (1/1) ... [2024-10-24 16:40:18,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c37ea24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:18, skipping insertion in model container [2024-10-24 16:40:18,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:40:18" (1/1) ... [2024-10-24 16:40:18,898 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 16:40:19,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 16:40:19,072 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 16:40:19,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 16:40:19,117 INFO L204 MainTranslator]: Completed translation [2024-10-24 16:40:19,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19 WrapperNode [2024-10-24 16:40:19,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 16:40:19,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 16:40:19,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 16:40:19,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 16:40:19,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,160 INFO L138 Inliner]: procedures = 42, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2024-10-24 16:40:19,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 16:40:19,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 16:40:19,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 16:40:19,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 16:40:19,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,176 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,191 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 1, 10]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-10-24 16:40:19,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 16:40:19,214 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 16:40:19,214 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 16:40:19,215 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 16:40:19,215 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (1/1) ... [2024-10-24 16:40:19,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 16:40:19,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:19,243 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) [2024-10-24 16:40:19,248 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 [2024-10-24 16:40:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 16:40:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 16:40:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 16:40:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 16:40:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 16:40:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 16:40:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 16:40:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 16:40:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 16:40:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 16:40:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 16:40:19,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 16:40:19,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 16:40:19,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 16:40:19,395 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 16:40:19,398 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 16:40:19,635 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-10-24 16:40:19,635 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 16:40:19,682 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 16:40:19,682 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 16:40:19,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:40:19 BoogieIcfgContainer [2024-10-24 16:40:19,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 16:40:19,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 16:40:19,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 16:40:19,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 16:40:19,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:40:18" (1/3) ... [2024-10-24 16:40:19,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2834ba7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:40:19, skipping insertion in model container [2024-10-24 16:40:19,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:40:19" (2/3) ... [2024-10-24 16:40:19,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2834ba7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:40:19, skipping insertion in model container [2024-10-24 16:40:19,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:40:19" (3/3) ... [2024-10-24 16:40:19,691 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-10-24 16:40:19,704 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 16:40:19,704 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-10-24 16:40:19,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 16:40:19,740 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;@22d030bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 16:40:19,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-10-24 16:40:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 41 states have (on average 2.073170731707317) internal successors, (85), 65 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-24 16:40:19,748 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:19,749 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-24 16:40:19,749 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:19,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:19,755 INFO L85 PathProgramCache]: Analyzing trace with hash 217508, now seen corresponding path program 1 times [2024-10-24 16:40:19,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:19,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264088414] [2024-10-24 16:40:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:19,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:19,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:19,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264088414] [2024-10-24 16:40:19,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264088414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:19,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:19,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 16:40:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036852959] [2024-10-24 16:40:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:19,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 16:40:19,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 16:40:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:40:19,971 INFO L87 Difference]: Start difference. First operand has 66 states, 41 states have (on average 2.073170731707317) internal successors, (85), 65 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:20,050 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2024-10-24 16:40:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 16:40:20,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-24 16:40:20,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:20,059 INFO L225 Difference]: With dead ends: 63 [2024-10-24 16:40:20,060 INFO L226 Difference]: Without dead ends: 62 [2024-10-24 16:40:20,061 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 [2024-10-24 16:40:20,064 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:20,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 46 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-10-24 16:40:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-10-24 16:40:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.875) internal successors, (75), 61 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) [2024-10-24 16:40:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-10-24 16:40:20,094 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 3 [2024-10-24 16:40:20,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:20,094 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-10-24 16:40:20,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:20,095 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-10-24 16:40:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-24 16:40:20,095 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:20,096 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-24 16:40:20,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 16:40:20,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:20,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 217509, now seen corresponding path program 1 times [2024-10-24 16:40:20,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:20,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437256] [2024-10-24 16:40:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:20,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:20,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:20,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437256] [2024-10-24 16:40:20,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:20,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:20,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 16:40:20,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682174528] [2024-10-24 16:40:20,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:20,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 16:40:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 16:40:20,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:40:20,198 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:20,254 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2024-10-24 16:40:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 16:40:20,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-24 16:40:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:20,256 INFO L225 Difference]: With dead ends: 64 [2024-10-24 16:40:20,256 INFO L226 Difference]: Without dead ends: 64 [2024-10-24 16:40:20,256 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 [2024-10-24 16:40:20,257 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:20,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-24 16:40:20,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-24 16:40:20,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 63 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) [2024-10-24 16:40:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2024-10-24 16:40:20,262 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 3 [2024-10-24 16:40:20,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:20,262 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2024-10-24 16:40:20,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2024-10-24 16:40:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-24 16:40:20,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:20,263 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2024-10-24 16:40:20,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 16:40:20,263 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:20,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash 209204257, now seen corresponding path program 1 times [2024-10-24 16:40:20,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:20,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982942181] [2024-10-24 16:40:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:20,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:20,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:20,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982942181] [2024-10-24 16:40:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982942181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217700887] [2024-10-24 16:40:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:20,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:20,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:20,380 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) [2024-10-24 16:40:20,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 16:40:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:20,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 16:40:20,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:20,487 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 [2024-10-24 16:40:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:20,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:20,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217700887] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:20,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:20,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-10-24 16:40:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781016552] [2024-10-24 16:40:20,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:20,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 16:40:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:20,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 16:40:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-24 16:40:20,615 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:20,715 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2024-10-24 16:40:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 16:40:20,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-24 16:40:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:20,717 INFO L225 Difference]: With dead ends: 70 [2024-10-24 16:40:20,717 INFO L226 Difference]: Without dead ends: 70 [2024-10-24 16:40:20,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-24 16:40:20,718 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:20,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-24 16:40:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-10-24 16:40:20,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 69 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:20,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2024-10-24 16:40:20,726 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 5 [2024-10-24 16:40:20,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:20,726 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2024-10-24 16:40:20,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:20,726 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2024-10-24 16:40:20,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 16:40:20,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:20,727 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2024-10-24 16:40:20,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 16:40:20,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:20,931 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:20,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:20,932 INFO L85 PathProgramCache]: Analyzing trace with hash 411993457, now seen corresponding path program 1 times [2024-10-24 16:40:20,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:20,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044827259] [2024-10-24 16:40:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:20,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 16:40:20,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:20,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044827259] [2024-10-24 16:40:20,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044827259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:20,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:20,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 16:40:20,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430062241] [2024-10-24 16:40:20,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:20,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 16:40:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:20,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 16:40:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:40:20,991 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:21,021 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2024-10-24 16:40:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 16:40:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-24 16:40:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:21,022 INFO L225 Difference]: With dead ends: 69 [2024-10-24 16:40:21,022 INFO L226 Difference]: Without dead ends: 69 [2024-10-24 16:40:21,022 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 [2024-10-24 16:40:21,023 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:21,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-24 16:40:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-24 16:40:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.75) internal successors, (84), 68 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-10-24 16:40:21,026 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 8 [2024-10-24 16:40:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:21,027 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-10-24 16:40:21,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-10-24 16:40:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-24 16:40:21,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:21,027 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:21,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 16:40:21,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:21,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1314536984, now seen corresponding path program 1 times [2024-10-24 16:40:21,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:21,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771943585] [2024-10-24 16:40:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:21,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 16:40:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:21,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771943585] [2024-10-24 16:40:21,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771943585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:21,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:21,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 16:40:21,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773386923] [2024-10-24 16:40:21,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:21,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 16:40:21,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 16:40:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 16:40:21,063 INFO L87 Difference]: Start difference. First operand 69 states and 84 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) [2024-10-24 16:40:21,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:21,112 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2024-10-24 16:40:21,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 16:40:21,112 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 11 [2024-10-24 16:40:21,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:21,113 INFO L225 Difference]: With dead ends: 69 [2024-10-24 16:40:21,113 INFO L226 Difference]: Without dead ends: 69 [2024-10-24 16:40:21,113 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 [2024-10-24 16:40:21,114 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 113 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:21,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 45 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-24 16:40:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-24 16:40:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 68 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2024-10-24 16:40:21,117 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 11 [2024-10-24 16:40:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:21,118 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2024-10-24 16:40:21,118 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) [2024-10-24 16:40:21,118 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2024-10-24 16:40:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-24 16:40:21,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:21,118 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:21,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 16:40:21,119 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:21,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1314539830, now seen corresponding path program 1 times [2024-10-24 16:40:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:21,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642126274] [2024-10-24 16:40:21,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:21,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:21,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:21,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642126274] [2024-10-24 16:40:21,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642126274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:21,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107469196] [2024-10-24 16:40:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:21,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:21,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:21,164 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) [2024-10-24 16:40:21,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 16:40:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:21,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 16:40:21,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:21,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:21,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107469196] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:21,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:21,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-24 16:40:21,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420441455] [2024-10-24 16:40:21,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:21,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 16:40:21,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:21,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 16:40:21,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-24 16:40:21,263 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:21,323 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2024-10-24 16:40:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 16:40:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-24 16:40:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:21,324 INFO L225 Difference]: With dead ends: 72 [2024-10-24 16:40:21,324 INFO L226 Difference]: Without dead ends: 72 [2024-10-24 16:40:21,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-24 16:40:21,325 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 2 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:21,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 344 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-24 16:40:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-24 16:40:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 71 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2024-10-24 16:40:21,328 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 11 [2024-10-24 16:40:21,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:21,329 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2024-10-24 16:40:21,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2024-10-24 16:40:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-24 16:40:21,329 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:21,329 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1] [2024-10-24 16:40:21,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 16:40:21,530 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,SelfDestructingSolverStorable5 [2024-10-24 16:40:21,530 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:21,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:21,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1098006123, now seen corresponding path program 2 times [2024-10-24 16:40:21,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:21,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861846800] [2024-10-24 16:40:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:21,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:21,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:21,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861846800] [2024-10-24 16:40:21,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861846800] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:21,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791931584] [2024-10-24 16:40:21,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 16:40:21,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:21,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:21,666 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) [2024-10-24 16:40:21,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 16:40:21,713 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 16:40:21,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:40:21,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 16:40:21,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:21,725 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 [2024-10-24 16:40:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:21,876 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 16:40:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791931584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:21,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 16:40:21,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2024-10-24 16:40:21,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135421319] [2024-10-24 16:40:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:21,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 16:40:21,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 16:40:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-24 16:40:21,878 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:21,943 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-10-24 16:40:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 16:40:21,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-24 16:40:21,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:21,944 INFO L225 Difference]: With dead ends: 71 [2024-10-24 16:40:21,945 INFO L226 Difference]: Without dead ends: 71 [2024-10-24 16:40:21,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-24 16:40:21,945 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:21,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-10-24 16:40:21,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-10-24 16:40:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2024-10-24 16:40:21,952 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 11 [2024-10-24 16:40:21,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:21,952 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2024-10-24 16:40:21,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2024-10-24 16:40:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 16:40:21,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:21,952 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:21,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 16:40:22,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:22,154 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:22,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash -226937158, now seen corresponding path program 2 times [2024-10-24 16:40:22,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:22,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962013550] [2024-10-24 16:40:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:22,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962013550] [2024-10-24 16:40:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962013550] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160402557] [2024-10-24 16:40:22,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 16:40:22,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:22,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:22,252 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) [2024-10-24 16:40:22,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 16:40:22,303 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 16:40:22,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:40:22,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 16:40:22,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:22,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 16:40:22,356 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-24 16:40:22,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-24 16:40:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 16:40:22,388 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 16:40:22,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160402557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:22,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 16:40:22,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 10 [2024-10-24 16:40:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990587772] [2024-10-24 16:40:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:22,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 16:40:22,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 16:40:22,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-24 16:40:22,390 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2024-10-24 16:40:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:22,452 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2024-10-24 16:40:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 16:40:22,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 19 [2024-10-24 16:40:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:22,454 INFO L225 Difference]: With dead ends: 63 [2024-10-24 16:40:22,454 INFO L226 Difference]: Without dead ends: 63 [2024-10-24 16:40:22,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-10-24 16:40:22,454 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 96 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:22,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 40 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:22,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-10-24 16:40:22,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-10-24 16:40:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 62 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) [2024-10-24 16:40:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2024-10-24 16:40:22,457 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 19 [2024-10-24 16:40:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:22,457 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2024-10-24 16:40:22,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2024-10-24 16:40:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2024-10-24 16:40:22,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 16:40:22,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:22,460 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:22,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:22,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:22,661 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:22,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:22,662 INFO L85 PathProgramCache]: Analyzing trace with hash -226937157, now seen corresponding path program 1 times [2024-10-24 16:40:22,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:22,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459407961] [2024-10-24 16:40:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:22,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459407961] [2024-10-24 16:40:22,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459407961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991587165] [2024-10-24 16:40:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:22,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:22,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:22,737 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) [2024-10-24 16:40:22,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 16:40:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:22,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 16:40:22,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:22,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:40:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991587165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:22,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-10-24 16:40:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587909713] [2024-10-24 16:40:22,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:22,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 16:40:22,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 16:40:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-24 16:40:22,886 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 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) [2024-10-24 16:40:22,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:22,928 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2024-10-24 16:40:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 16:40:22,929 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 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 19 [2024-10-24 16:40:22,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:22,929 INFO L225 Difference]: With dead ends: 67 [2024-10-24 16:40:22,929 INFO L226 Difference]: Without dead ends: 67 [2024-10-24 16:40:22,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-10-24 16:40:22,930 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:22,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 149 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:22,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-24 16:40:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-24 16:40:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 66 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) [2024-10-24 16:40:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2024-10-24 16:40:22,933 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 19 [2024-10-24 16:40:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:22,933 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2024-10-24 16:40:22,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 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) [2024-10-24 16:40:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2024-10-24 16:40:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 16:40:22,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:22,934 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:22,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:23,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:23,135 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:23,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash -8823629, now seen corresponding path program 2 times [2024-10-24 16:40:23,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:23,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387467412] [2024-10-24 16:40:23,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:23,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 16:40:23,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:23,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387467412] [2024-10-24 16:40:23,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387467412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:23,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:23,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 16:40:23,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383315240] [2024-10-24 16:40:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:23,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 16:40:23,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:23,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 16:40:23,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:23,363 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:23,439 INFO L93 Difference]: Finished difference Result 104 states and 134 transitions. [2024-10-24 16:40:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:40:23,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-10-24 16:40:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:23,440 INFO L225 Difference]: With dead ends: 104 [2024-10-24 16:40:23,440 INFO L226 Difference]: Without dead ends: 104 [2024-10-24 16:40:23,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:23,441 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 46 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:23,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 148 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-24 16:40:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2024-10-24 16:40:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 83 states have (on average 1.5301204819277108) internal successors, (127), 94 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) [2024-10-24 16:40:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 127 transitions. [2024-10-24 16:40:23,450 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 127 transitions. Word has length 23 [2024-10-24 16:40:23,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:23,450 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 127 transitions. [2024-10-24 16:40:23,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 127 transitions. [2024-10-24 16:40:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-24 16:40:23,451 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:23,451 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:23,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 16:40:23,451 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:23,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash 110580248, now seen corresponding path program 1 times [2024-10-24 16:40:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:23,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689246858] [2024-10-24 16:40:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:23,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:23,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689246858] [2024-10-24 16:40:23,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689246858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:23,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:23,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 16:40:23,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475728137] [2024-10-24 16:40:23,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:23,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 16:40:23,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:23,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 16:40:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:23,562 INFO L87 Difference]: Start difference. First operand 95 states and 127 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:23,665 INFO L93 Difference]: Finished difference Result 155 states and 221 transitions. [2024-10-24 16:40:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:40:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-24 16:40:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:23,666 INFO L225 Difference]: With dead ends: 155 [2024-10-24 16:40:23,666 INFO L226 Difference]: Without dead ends: 155 [2024-10-24 16:40:23,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 16:40:23,667 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 120 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:23,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 186 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-24 16:40:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 113. [2024-10-24 16:40:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 101 states have (on average 1.5148514851485149) internal successors, (153), 112 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 153 transitions. [2024-10-24 16:40:23,673 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 153 transitions. Word has length 25 [2024-10-24 16:40:23,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:23,674 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 153 transitions. [2024-10-24 16:40:23,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 153 transitions. [2024-10-24 16:40:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-24 16:40:23,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:23,674 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:23,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 16:40:23,674 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:23,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:23,675 INFO L85 PathProgramCache]: Analyzing trace with hash 60831379, now seen corresponding path program 1 times [2024-10-24 16:40:23,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:23,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77467329] [2024-10-24 16:40:23,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:23,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 16:40:23,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:23,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77467329] [2024-10-24 16:40:23,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77467329] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:23,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804457568] [2024-10-24 16:40:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:23,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:23,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:23,845 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) [2024-10-24 16:40:23,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 16:40:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:23,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 16:40:23,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:23,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 16:40:23,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 16:40:23,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-24 16:40:24,000 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 16:40:24,000 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 [2024-10-24 16:40:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:24,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:24,118 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 36 treesize of output 32 [2024-10-24 16:40:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:24,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804457568] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:24,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:24,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-10-24 16:40:24,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847652158] [2024-10-24 16:40:24,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:24,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 16:40:24,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:24,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 16:40:24,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 16:40:24,254 INFO L87 Difference]: Start difference. First operand 113 states and 153 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:24,442 INFO L93 Difference]: Finished difference Result 293 states and 441 transitions. [2024-10-24 16:40:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 16:40:24,442 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 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 28 [2024-10-24 16:40:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:24,443 INFO L225 Difference]: With dead ends: 293 [2024-10-24 16:40:24,444 INFO L226 Difference]: Without dead ends: 293 [2024-10-24 16:40:24,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-24 16:40:24,444 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 328 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:24,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 334 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 16:40:24,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-10-24 16:40:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 127. [2024-10-24 16:40:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 117 states have (on average 1.4786324786324787) internal successors, (173), 126 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:24,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 173 transitions. [2024-10-24 16:40:24,448 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 173 transitions. Word has length 28 [2024-10-24 16:40:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:24,448 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 173 transitions. [2024-10-24 16:40:24,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 173 transitions. [2024-10-24 16:40:24,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-24 16:40:24,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:24,449 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:24,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 16:40:24,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:24,650 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:24,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1143520189, now seen corresponding path program 1 times [2024-10-24 16:40:24,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:24,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964234043] [2024-10-24 16:40:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:24,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 16:40:24,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:24,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964234043] [2024-10-24 16:40:24,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964234043] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:24,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592905507] [2024-10-24 16:40:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:24,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:24,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:24,828 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) [2024-10-24 16:40:24,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 16:40:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:24,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 16:40:24,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:24,898 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 [2024-10-24 16:40:24,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 16:40:24,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 16:40:24,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-24 16:40:24,998 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 16:40:24,998 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 [2024-10-24 16:40:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:25,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:25,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592905507] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:25,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:25,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-10-24 16:40:25,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080910370] [2024-10-24 16:40:25,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:25,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 16:40:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 16:40:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-24 16:40:25,350 INFO L87 Difference]: Start difference. First operand 127 states and 173 transitions. Second operand has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:25,621 INFO L93 Difference]: Finished difference Result 304 states and 420 transitions. [2024-10-24 16:40:25,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 16:40:25,622 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-10-24 16:40:25,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:25,624 INFO L225 Difference]: With dead ends: 304 [2024-10-24 16:40:25,624 INFO L226 Difference]: Without dead ends: 304 [2024-10-24 16:40:25,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2024-10-24 16:40:25,624 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 568 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:25,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 548 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 16:40:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-10-24 16:40:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 276. [2024-10-24 16:40:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 267 states have (on average 1.5131086142322097) internal successors, (404), 275 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 404 transitions. [2024-10-24 16:40:25,629 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 404 transitions. Word has length 29 [2024-10-24 16:40:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:25,630 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 404 transitions. [2024-10-24 16:40:25,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 404 transitions. [2024-10-24 16:40:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-24 16:40:25,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:25,633 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:25,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:25,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:25,837 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:25,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:25,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1089473886, now seen corresponding path program 1 times [2024-10-24 16:40:25,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:25,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671888597] [2024-10-24 16:40:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:25,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:25,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671888597] [2024-10-24 16:40:25,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671888597] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:25,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:25,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 16:40:25,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021383573] [2024-10-24 16:40:25,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:25,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:40:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:40:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:40:25,904 INFO L87 Difference]: Start difference. First operand 276 states and 404 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:25,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:25,956 INFO L93 Difference]: Finished difference Result 292 states and 415 transitions. [2024-10-24 16:40:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:40:25,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 30 [2024-10-24 16:40:25,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:25,957 INFO L225 Difference]: With dead ends: 292 [2024-10-24 16:40:25,957 INFO L226 Difference]: Without dead ends: 292 [2024-10-24 16:40:25,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:25,958 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:25,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 159 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-10-24 16:40:25,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2024-10-24 16:40:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 279 states have (on average 1.4731182795698925) internal successors, (411), 287 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 411 transitions. [2024-10-24 16:40:25,964 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 411 transitions. Word has length 30 [2024-10-24 16:40:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:25,965 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 411 transitions. [2024-10-24 16:40:25,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 411 transitions. [2024-10-24 16:40:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-24 16:40:25,967 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:25,967 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:25,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 16:40:25,968 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:25,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash 492357191, now seen corresponding path program 1 times [2024-10-24 16:40:25,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:25,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050593124] [2024-10-24 16:40:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:25,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:25,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:25,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050593124] [2024-10-24 16:40:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050593124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:25,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 16:40:25,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757794081] [2024-10-24 16:40:25,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:25,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 16:40:25,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 16:40:25,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:40:25,997 INFO L87 Difference]: Start difference. First operand 288 states and 411 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:26,017 INFO L93 Difference]: Finished difference Result 308 states and 431 transitions. [2024-10-24 16:40:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 16:40:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-10-24 16:40:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:26,019 INFO L225 Difference]: With dead ends: 308 [2024-10-24 16:40:26,019 INFO L226 Difference]: Without dead ends: 308 [2024-10-24 16:40:26,020 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 [2024-10-24 16:40:26,020 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:26,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-24 16:40:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2024-10-24 16:40:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 299 states have (on average 1.4414715719063544) internal successors, (431), 307 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 431 transitions. [2024-10-24 16:40:26,025 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 431 transitions. Word has length 33 [2024-10-24 16:40:26,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:26,026 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 431 transitions. [2024-10-24 16:40:26,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 431 transitions. [2024-10-24 16:40:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 16:40:26,028 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:26,028 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:26,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 16:40:26,028 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:26,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:26,030 INFO L85 PathProgramCache]: Analyzing trace with hash -681316377, now seen corresponding path program 1 times [2024-10-24 16:40:26,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:26,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248936391] [2024-10-24 16:40:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:26,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:26,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:26,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248936391] [2024-10-24 16:40:26,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248936391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:26,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:26,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 16:40:26,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761264597] [2024-10-24 16:40:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:26,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 16:40:26,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 16:40:26,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:26,090 INFO L87 Difference]: Start difference. First operand 308 states and 431 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:26,163 INFO L93 Difference]: Finished difference Result 317 states and 430 transitions. [2024-10-24 16:40:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 16:40:26,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-10-24 16:40:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:26,166 INFO L225 Difference]: With dead ends: 317 [2024-10-24 16:40:26,166 INFO L226 Difference]: Without dead ends: 317 [2024-10-24 16:40:26,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 16:40:26,166 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 50 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:26,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 165 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-10-24 16:40:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 308. [2024-10-24 16:40:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 299 states have (on average 1.4247491638795986) internal successors, (426), 307 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 426 transitions. [2024-10-24 16:40:26,171 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 426 transitions. Word has length 34 [2024-10-24 16:40:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:26,172 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 426 transitions. [2024-10-24 16:40:26,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,172 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 426 transitions. [2024-10-24 16:40:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 16:40:26,174 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:26,174 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:26,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 16:40:26,175 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:26,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:26,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1944194648, now seen corresponding path program 2 times [2024-10-24 16:40:26,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:26,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945161099] [2024-10-24 16:40:26,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 16:40:26,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945161099] [2024-10-24 16:40:26,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945161099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921048963] [2024-10-24 16:40:26,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 16:40:26,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:26,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:26,409 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) [2024-10-24 16:40:26,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 16:40:26,477 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 16:40:26,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:40:26,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 16:40:26,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-10-24 16:40:26,592 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 16:40:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921048963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:26,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 16:40:26,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2024-10-24 16:40:26,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697773459] [2024-10-24 16:40:26,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:26,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 16:40:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 16:40:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-10-24 16:40:26,593 INFO L87 Difference]: Start difference. First operand 308 states and 426 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:26,746 INFO L93 Difference]: Finished difference Result 308 states and 423 transitions. [2024-10-24 16:40:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 16:40:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 37 [2024-10-24 16:40:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:26,748 INFO L225 Difference]: With dead ends: 308 [2024-10-24 16:40:26,748 INFO L226 Difference]: Without dead ends: 308 [2024-10-24 16:40:26,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-10-24 16:40:26,749 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 54 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:26,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 298 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-24 16:40:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 291. [2024-10-24 16:40:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 282 states have (on average 1.4184397163120568) internal successors, (400), 290 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 400 transitions. [2024-10-24 16:40:26,753 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 400 transitions. Word has length 37 [2024-10-24 16:40:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:26,753 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 400 transitions. [2024-10-24 16:40:26,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:26,753 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 400 transitions. [2024-10-24 16:40:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 16:40:26,754 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:26,754 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:26,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 16:40:26,958 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 [2024-10-24 16:40:26,959 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:26,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:26,959 INFO L85 PathProgramCache]: Analyzing trace with hash 935600106, now seen corresponding path program 1 times [2024-10-24 16:40:26,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:26,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584758222] [2024-10-24 16:40:26,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:26,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584758222] [2024-10-24 16:40:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584758222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:27,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:27,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 16:40:27,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044320449] [2024-10-24 16:40:27,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:27,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:40:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:27,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:40:27,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:40:27,008 INFO L87 Difference]: Start difference. First operand 291 states and 400 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2024-10-24 16:40:27,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:27,054 INFO L93 Difference]: Finished difference Result 330 states and 454 transitions. [2024-10-24 16:40:27,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 16:40:27,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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 37 [2024-10-24 16:40:27,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:27,056 INFO L225 Difference]: With dead ends: 330 [2024-10-24 16:40:27,056 INFO L226 Difference]: Without dead ends: 330 [2024-10-24 16:40:27,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:27,057 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:27,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 108 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-10-24 16:40:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 302. [2024-10-24 16:40:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 293 states have (on average 1.3924914675767919) internal successors, (408), 301 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 408 transitions. [2024-10-24 16:40:27,061 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 408 transitions. Word has length 37 [2024-10-24 16:40:27,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:27,061 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 408 transitions. [2024-10-24 16:40:27,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 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) [2024-10-24 16:40:27,061 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 408 transitions. [2024-10-24 16:40:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-24 16:40:27,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:27,062 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:27,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 16:40:27,062 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:27,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:27,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1487120029, now seen corresponding path program 1 times [2024-10-24 16:40:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:27,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585207044] [2024-10-24 16:40:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:27,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:27,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:27,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585207044] [2024-10-24 16:40:27,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585207044] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:27,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885424375] [2024-10-24 16:40:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:27,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:27,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:27,150 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) [2024-10-24 16:40:27,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 16:40:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:27,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 16:40:27,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:27,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:27,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885424375] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:27,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:27,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-10-24 16:40:27,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766186366] [2024-10-24 16:40:27,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:27,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 16:40:27,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:27,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 16:40:27,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 16:40:27,275 INFO L87 Difference]: Start difference. First operand 302 states and 408 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2024-10-24 16:40:27,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:27,369 INFO L93 Difference]: Finished difference Result 308 states and 399 transitions. [2024-10-24 16:40:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 16:40:27,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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 40 [2024-10-24 16:40:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:27,370 INFO L225 Difference]: With dead ends: 308 [2024-10-24 16:40:27,370 INFO L226 Difference]: Without dead ends: 308 [2024-10-24 16:40:27,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-24 16:40:27,371 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 110 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:27,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 186 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-24 16:40:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 293. [2024-10-24 16:40:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 284 states have (on average 1.3767605633802817) internal successors, (391), 292 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 391 transitions. [2024-10-24 16:40:27,376 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 391 transitions. Word has length 40 [2024-10-24 16:40:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:27,376 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 391 transitions. [2024-10-24 16:40:27,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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) [2024-10-24 16:40:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 391 transitions. [2024-10-24 16:40:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-24 16:40:27,376 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:27,376 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:27,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 16:40:27,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:27,579 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:27,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1869023402, now seen corresponding path program 1 times [2024-10-24 16:40:27,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:27,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651931771] [2024-10-24 16:40:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:27,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 16:40:27,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:27,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651931771] [2024-10-24 16:40:27,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651931771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:27,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:27,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 16:40:27,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473710919] [2024-10-24 16:40:27,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:27,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 16:40:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:27,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 16:40:27,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:27,718 INFO L87 Difference]: Start difference. First operand 293 states and 391 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:27,761 INFO L93 Difference]: Finished difference Result 292 states and 390 transitions. [2024-10-24 16:40:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 16:40:27,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 40 [2024-10-24 16:40:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:27,762 INFO L225 Difference]: With dead ends: 292 [2024-10-24 16:40:27,762 INFO L226 Difference]: Without dead ends: 289 [2024-10-24 16:40:27,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:27,763 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 31 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:27,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 120 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-10-24 16:40:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 277. [2024-10-24 16:40:27,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 269 states have (on average 1.342007434944238) internal successors, (361), 276 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 361 transitions. [2024-10-24 16:40:27,767 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 361 transitions. Word has length 40 [2024-10-24 16:40:27,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:27,768 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 361 transitions. [2024-10-24 16:40:27,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,768 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 361 transitions. [2024-10-24 16:40:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-24 16:40:27,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:27,768 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:27,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 16:40:27,769 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:27,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash -863563010, now seen corresponding path program 1 times [2024-10-24 16:40:27,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:27,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693476370] [2024-10-24 16:40:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:27,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:27,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:27,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693476370] [2024-10-24 16:40:27,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693476370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:27,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:27,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 16:40:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569977919] [2024-10-24 16:40:27,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:27,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 16:40:27,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 16:40:27,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:40:27,814 INFO L87 Difference]: Start difference. First operand 277 states and 361 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:27,830 INFO L93 Difference]: Finished difference Result 274 states and 354 transitions. [2024-10-24 16:40:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 16:40:27,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 42 [2024-10-24 16:40:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:27,831 INFO L225 Difference]: With dead ends: 274 [2024-10-24 16:40:27,831 INFO L226 Difference]: Without dead ends: 274 [2024-10-24 16:40:27,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:40:27,832 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:27,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-10-24 16:40:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2024-10-24 16:40:27,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 267 states have (on average 1.3258426966292134) internal successors, (354), 273 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 354 transitions. [2024-10-24 16:40:27,836 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 354 transitions. Word has length 42 [2024-10-24 16:40:27,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:27,837 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 354 transitions. [2024-10-24 16:40:27,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,837 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 354 transitions. [2024-10-24 16:40:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-24 16:40:27,837 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:27,837 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:27,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 16:40:27,838 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:27,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash -863605005, now seen corresponding path program 1 times [2024-10-24 16:40:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:27,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328236971] [2024-10-24 16:40:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:27,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:27,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:27,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328236971] [2024-10-24 16:40:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328236971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:27,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:27,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 16:40:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721227318] [2024-10-24 16:40:27,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:27,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 16:40:27,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 16:40:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:40:27,916 INFO L87 Difference]: Start difference. First operand 274 states and 354 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:27,933 INFO L93 Difference]: Finished difference Result 273 states and 349 transitions. [2024-10-24 16:40:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 16:40:27,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 42 [2024-10-24 16:40:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:27,936 INFO L225 Difference]: With dead ends: 273 [2024-10-24 16:40:27,936 INFO L226 Difference]: Without dead ends: 273 [2024-10-24 16:40:27,936 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 [2024-10-24 16:40:27,936 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:27,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 40 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-10-24 16:40:27,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2024-10-24 16:40:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 267 states have (on average 1.307116104868914) internal successors, (349), 272 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 349 transitions. [2024-10-24 16:40:27,942 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 349 transitions. Word has length 42 [2024-10-24 16:40:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:27,942 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 349 transitions. [2024-10-24 16:40:27,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 349 transitions. [2024-10-24 16:40:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-24 16:40:27,943 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:27,943 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:27,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 16:40:27,943 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:27,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash -863605004, now seen corresponding path program 1 times [2024-10-24 16:40:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:27,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918793248] [2024-10-24 16:40:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:28,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:28,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918793248] [2024-10-24 16:40:28,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918793248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:28,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:28,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 16:40:28,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993555361] [2024-10-24 16:40:28,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:28,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 16:40:28,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 16:40:28,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:28,031 INFO L87 Difference]: Start difference. First operand 273 states and 349 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:28,137 INFO L93 Difference]: Finished difference Result 476 states and 615 transitions. [2024-10-24 16:40:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 16:40:28,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 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 42 [2024-10-24 16:40:28,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:28,139 INFO L225 Difference]: With dead ends: 476 [2024-10-24 16:40:28,139 INFO L226 Difference]: Without dead ends: 443 [2024-10-24 16:40:28,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 16:40:28,140 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 65 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:28,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 190 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-10-24 16:40:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 328. [2024-10-24 16:40:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 322 states have (on average 1.3354037267080745) internal successors, (430), 327 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 430 transitions. [2024-10-24 16:40:28,144 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 430 transitions. Word has length 42 [2024-10-24 16:40:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:28,144 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 430 transitions. [2024-10-24 16:40:28,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 430 transitions. [2024-10-24 16:40:28,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-24 16:40:28,145 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:28,145 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:28,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 16:40:28,145 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:28,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:28,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1450411018, now seen corresponding path program 1 times [2024-10-24 16:40:28,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:28,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251265466] [2024-10-24 16:40:28,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:28,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:28,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:28,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251265466] [2024-10-24 16:40:28,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251265466] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:28,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:28,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 16:40:28,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643473596] [2024-10-24 16:40:28,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:28,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:40:28,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:28,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:40:28,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:40:28,203 INFO L87 Difference]: Start difference. First operand 328 states and 430 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:28,259 INFO L93 Difference]: Finished difference Result 311 states and 406 transitions. [2024-10-24 16:40:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:40:28,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 42 [2024-10-24 16:40:28,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:28,260 INFO L225 Difference]: With dead ends: 311 [2024-10-24 16:40:28,260 INFO L226 Difference]: Without dead ends: 297 [2024-10-24 16:40:28,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:28,261 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:28,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 114 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:28,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-10-24 16:40:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-10-24 16:40:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 291 states have (on average 1.3470790378006874) internal successors, (392), 296 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 392 transitions. [2024-10-24 16:40:28,266 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 392 transitions. Word has length 42 [2024-10-24 16:40:28,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:28,266 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 392 transitions. [2024-10-24 16:40:28,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:28,266 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 392 transitions. [2024-10-24 16:40:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 16:40:28,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:28,267 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:28,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 16:40:28,267 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:28,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:28,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1230066658, now seen corresponding path program 1 times [2024-10-24 16:40:28,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:28,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449928081] [2024-10-24 16:40:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:28,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-24 16:40:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449928081] [2024-10-24 16:40:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449928081] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17615124] [2024-10-24 16:40:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:28,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:28,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:28,465 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) [2024-10-24 16:40:28,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 16:40:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:28,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 16:40:28,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-24 16:40:28,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:28,738 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-24 16:40:28,738 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 22 treesize of output 14 [2024-10-24 16:40:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-24 16:40:28,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17615124] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:28,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:28,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2024-10-24 16:40:28,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814151297] [2024-10-24 16:40:28,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:28,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 16:40:28,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 16:40:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2024-10-24 16:40:28,808 INFO L87 Difference]: Start difference. First operand 297 states and 392 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:30,689 INFO L93 Difference]: Finished difference Result 1226 states and 1696 transitions. [2024-10-24 16:40:30,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-24 16:40:30,690 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 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 43 [2024-10-24 16:40:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:30,693 INFO L225 Difference]: With dead ends: 1226 [2024-10-24 16:40:30,693 INFO L226 Difference]: Without dead ends: 1221 [2024-10-24 16:40:30,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=2409, Unknown=0, NotChecked=0, Total=2652 [2024-10-24 16:40:30,694 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 673 mSDsluCounter, 3555 mSDsCounter, 0 mSdLazyCounter, 3777 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 3816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:30,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 3851 Invalid, 3816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3777 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 16:40:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2024-10-24 16:40:30,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 470. [2024-10-24 16:40:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 464 states have (on average 1.3405172413793103) internal successors, (622), 469 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 622 transitions. [2024-10-24 16:40:30,702 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 622 transitions. Word has length 43 [2024-10-24 16:40:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:30,702 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 622 transitions. [2024-10-24 16:40:30,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 622 transitions. [2024-10-24 16:40:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-24 16:40:30,703 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:30,703 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:30,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:30,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-24 16:40:30,904 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:30,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:30,904 INFO L85 PathProgramCache]: Analyzing trace with hash -126812973, now seen corresponding path program 2 times [2024-10-24 16:40:30,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:30,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119563849] [2024-10-24 16:40:30,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:30,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-24 16:40:31,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:31,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119563849] [2024-10-24 16:40:31,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119563849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:31,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:31,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 16:40:31,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595962927] [2024-10-24 16:40:31,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:31,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 16:40:31,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:31,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 16:40:31,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 16:40:31,007 INFO L87 Difference]: Start difference. First operand 470 states and 622 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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) [2024-10-24 16:40:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:31,101 INFO L93 Difference]: Finished difference Result 497 states and 636 transitions. [2024-10-24 16:40:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 16:40:31,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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 46 [2024-10-24 16:40:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:31,102 INFO L225 Difference]: With dead ends: 497 [2024-10-24 16:40:31,102 INFO L226 Difference]: Without dead ends: 497 [2024-10-24 16:40:31,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-10-24 16:40:31,103 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 90 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:31,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 96 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-10-24 16:40:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 467. [2024-10-24 16:40:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 464 states have (on average 1.2952586206896552) internal successors, (601), 466 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 601 transitions. [2024-10-24 16:40:31,110 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 601 transitions. Word has length 46 [2024-10-24 16:40:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:31,110 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 601 transitions. [2024-10-24 16:40:31,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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) [2024-10-24 16:40:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 601 transitions. [2024-10-24 16:40:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-10-24 16:40:31,110 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:31,111 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-10-24 16:40:31,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 16:40:31,111 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:31,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:31,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1956832084, now seen corresponding path program 1 times [2024-10-24 16:40:31,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:31,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049517802] [2024-10-24 16:40:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:31,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:31,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:31,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049517802] [2024-10-24 16:40:31,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049517802] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:31,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:31,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 16:40:31,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885527208] [2024-10-24 16:40:31,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:31,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 16:40:31,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:31,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 16:40:31,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-24 16:40:31,302 INFO L87 Difference]: Start difference. First operand 467 states and 601 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:31,416 INFO L93 Difference]: Finished difference Result 587 states and 750 transitions. [2024-10-24 16:40:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 16:40:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 48 [2024-10-24 16:40:31,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:31,418 INFO L225 Difference]: With dead ends: 587 [2024-10-24 16:40:31,418 INFO L226 Difference]: Without dead ends: 587 [2024-10-24 16:40:31,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-10-24 16:40:31,419 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 154 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:31,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 124 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:40:31,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-10-24 16:40:31,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 530. [2024-10-24 16:40:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 527 states have (on average 1.2865275142314991) internal successors, (678), 529 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 678 transitions. [2024-10-24 16:40:31,425 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 678 transitions. Word has length 48 [2024-10-24 16:40:31,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:31,425 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 678 transitions. [2024-10-24 16:40:31,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:31,425 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 678 transitions. [2024-10-24 16:40:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 16:40:31,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:31,426 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:31,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 16:40:31,426 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:31,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1643888191, now seen corresponding path program 2 times [2024-10-24 16:40:31,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:31,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400181878] [2024-10-24 16:40:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:31,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-24 16:40:31,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400181878] [2024-10-24 16:40:31,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400181878] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:31,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178717605] [2024-10-24 16:40:31,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 16:40:31,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:31,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:31,678 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) [2024-10-24 16:40:31,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 16:40:31,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 16:40:31,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:40:31,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 16:40:31,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-24 16:40:32,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:32,109 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-10-24 16:40:32,110 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 22 treesize of output 14 [2024-10-24 16:40:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-24 16:40:32,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178717605] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:32,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:32,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2024-10-24 16:40:32,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097114455] [2024-10-24 16:40:32,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:32,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 16:40:32,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:32,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 16:40:32,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2024-10-24 16:40:32,207 INFO L87 Difference]: Start difference. First operand 530 states and 678 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:35,737 INFO L93 Difference]: Finished difference Result 1812 states and 2349 transitions. [2024-10-24 16:40:35,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-24 16:40:35,738 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 0 states have call successors, (0), 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 52 [2024-10-24 16:40:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:35,742 INFO L225 Difference]: With dead ends: 1812 [2024-10-24 16:40:35,742 INFO L226 Difference]: Without dead ends: 1812 [2024-10-24 16:40:35,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=346, Invalid=5056, Unknown=0, NotChecked=0, Total=5402 [2024-10-24 16:40:35,743 INFO L432 NwaCegarLoop]: 491 mSDtfsCounter, 1192 mSDsluCounter, 9828 mSDsCounter, 0 mSdLazyCounter, 8359 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 10319 SdHoareTripleChecker+Invalid, 8440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 8359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:35,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 10319 Invalid, 8440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 8359 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-24 16:40:35,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2024-10-24 16:40:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 645. [2024-10-24 16:40:35,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 642 states have (on average 1.2881619937694704) internal successors, (827), 644 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:35,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 827 transitions. [2024-10-24 16:40:35,757 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 827 transitions. Word has length 52 [2024-10-24 16:40:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:35,757 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 827 transitions. [2024-10-24 16:40:35,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 827 transitions. [2024-10-24 16:40:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 16:40:35,758 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:35,758 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:35,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:35,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-24 16:40:35,959 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:35,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1991435035, now seen corresponding path program 2 times [2024-10-24 16:40:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:35,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360073446] [2024-10-24 16:40:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:35,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 70 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 16:40:36,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:36,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360073446] [2024-10-24 16:40:36,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360073446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:36,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051566527] [2024-10-24 16:40:36,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 16:40:36,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:36,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:36,181 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) [2024-10-24 16:40:36,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 16:40:36,266 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 16:40:36,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:40:36,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 16:40:36,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:36,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 16:40:36,279 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 [2024-10-24 16:40:36,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 16:40:36,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-24 16:40:36,369 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 16:40:36,370 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 [2024-10-24 16:40:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:36,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:36,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051566527] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:36,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:36,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2024-10-24 16:40:36,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324531640] [2024-10-24 16:40:36,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:36,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-24 16:40:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-24 16:40:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2024-10-24 16:40:36,969 INFO L87 Difference]: Start difference. First operand 645 states and 827 transitions. Second operand has 27 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:37,299 INFO L93 Difference]: Finished difference Result 1278 states and 1648 transitions. [2024-10-24 16:40:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 16:40:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-10-24 16:40:37,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:37,302 INFO L225 Difference]: With dead ends: 1278 [2024-10-24 16:40:37,303 INFO L226 Difference]: Without dead ends: 1278 [2024-10-24 16:40:37,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2024-10-24 16:40:37,303 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 855 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:37,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1147 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 16:40:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2024-10-24 16:40:37,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1272. [2024-10-24 16:40:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1269 states have (on average 1.2986603624901498) internal successors, (1648), 1271 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1648 transitions. [2024-10-24 16:40:37,317 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1648 transitions. Word has length 53 [2024-10-24 16:40:37,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:37,317 INFO L471 AbstractCegarLoop]: Abstraction has 1272 states and 1648 transitions. [2024-10-24 16:40:37,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1648 transitions. [2024-10-24 16:40:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 16:40:37,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:37,321 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-10-24 16:40:37,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 16:40:37,524 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,SelfDestructingSolverStorable28 [2024-10-24 16:40:37,525 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:37,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1564158510, now seen corresponding path program 1 times [2024-10-24 16:40:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:37,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036106798] [2024-10-24 16:40:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 16:40:37,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:37,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036106798] [2024-10-24 16:40:37,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036106798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:37,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 16:40:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247687554] [2024-10-24 16:40:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:37,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 16:40:37,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 16:40:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 16:40:37,567 INFO L87 Difference]: Start difference. First operand 1272 states and 1648 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:37,593 INFO L93 Difference]: Finished difference Result 1320 states and 1696 transitions. [2024-10-24 16:40:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 16:40:37,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-24 16:40:37,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:37,597 INFO L225 Difference]: With dead ends: 1320 [2024-10-24 16:40:37,597 INFO L226 Difference]: Without dead ends: 1320 [2024-10-24 16:40:37,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 16:40:37,598 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:37,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2024-10-24 16:40:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2024-10-24 16:40:37,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1317 states have (on average 1.2877752467729688) internal successors, (1696), 1319 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1696 transitions. [2024-10-24 16:40:37,613 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1696 transitions. Word has length 57 [2024-10-24 16:40:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:37,614 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1696 transitions. [2024-10-24 16:40:37,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1696 transitions. [2024-10-24 16:40:37,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 16:40:37,614 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:37,614 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-10-24 16:40:37,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-24 16:40:37,615 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:37,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:37,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1163367344, now seen corresponding path program 1 times [2024-10-24 16:40:37,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:37,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164502092] [2024-10-24 16:40:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:37,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 16:40:37,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:37,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164502092] [2024-10-24 16:40:37,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164502092] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:37,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:37,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 16:40:37,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792709247] [2024-10-24 16:40:37,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:37,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:40:37,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:37,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:40:37,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:40:37,691 INFO L87 Difference]: Start difference. First operand 1320 states and 1696 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:37,734 INFO L93 Difference]: Finished difference Result 1405 states and 1774 transitions. [2024-10-24 16:40:37,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:40:37,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 [2024-10-24 16:40:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:37,737 INFO L225 Difference]: With dead ends: 1405 [2024-10-24 16:40:37,737 INFO L226 Difference]: Without dead ends: 1405 [2024-10-24 16:40:37,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:37,738 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 19 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:37,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 89 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2024-10-24 16:40:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1320. [2024-10-24 16:40:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1317 states have (on average 1.2748671222475323) internal successors, (1679), 1319 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1679 transitions. [2024-10-24 16:40:37,750 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1679 transitions. Word has length 58 [2024-10-24 16:40:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:37,750 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1679 transitions. [2024-10-24 16:40:37,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1679 transitions. [2024-10-24 16:40:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 16:40:37,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:37,751 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-10-24 16:40:37,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-24 16:40:37,752 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:37,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash -168597921, now seen corresponding path program 1 times [2024-10-24 16:40:37,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:37,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806034439] [2024-10-24 16:40:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:37,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:37,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:37,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806034439] [2024-10-24 16:40:37,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806034439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:37,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650793986] [2024-10-24 16:40:37,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:37,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:37,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:37,885 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) [2024-10-24 16:40:37,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 16:40:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:37,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 16:40:37,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:38,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:38,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650793986] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:38,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:38,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-10-24 16:40:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362567471] [2024-10-24 16:40:38,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:38,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 16:40:38,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:38,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 16:40:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-10-24 16:40:38,199 INFO L87 Difference]: Start difference. First operand 1320 states and 1679 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:38,626 INFO L93 Difference]: Finished difference Result 2044 states and 2553 transitions. [2024-10-24 16:40:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-24 16:40:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 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 59 [2024-10-24 16:40:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:38,630 INFO L225 Difference]: With dead ends: 2044 [2024-10-24 16:40:38,630 INFO L226 Difference]: Without dead ends: 1465 [2024-10-24 16:40:38,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 16:40:38,633 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 448 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:38,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 617 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 16:40:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2024-10-24 16:40:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1225. [2024-10-24 16:40:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1222 states have (on average 1.2520458265139116) internal successors, (1530), 1224 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1530 transitions. [2024-10-24 16:40:38,648 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1530 transitions. Word has length 59 [2024-10-24 16:40:38,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:38,648 INFO L471 AbstractCegarLoop]: Abstraction has 1225 states and 1530 transitions. [2024-10-24 16:40:38,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1530 transitions. [2024-10-24 16:40:38,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 16:40:38,649 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:38,649 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 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] [2024-10-24 16:40:38,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:38,853 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,SelfDestructingSolverStorable31 [2024-10-24 16:40:38,853 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:38,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash -111339619, now seen corresponding path program 1 times [2024-10-24 16:40:38,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:38,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488147993] [2024-10-24 16:40:38,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:38,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:39,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488147993] [2024-10-24 16:40:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488147993] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682265492] [2024-10-24 16:40:39,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:39,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:39,066 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) [2024-10-24 16:40:39,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 16:40:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:39,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 16:40:39,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:39,160 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 [2024-10-24 16:40:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:39,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682265492] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:39,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-10-24 16:40:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22245973] [2024-10-24 16:40:39,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:39,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 16:40:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 16:40:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-10-24 16:40:39,818 INFO L87 Difference]: Start difference. First operand 1225 states and 1530 transitions. Second operand has 26 states, 25 states have (on average 5.0) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:40,129 INFO L93 Difference]: Finished difference Result 1225 states and 1529 transitions. [2024-10-24 16:40:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 16:40:40,130 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.0) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-24 16:40:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:40,132 INFO L225 Difference]: With dead ends: 1225 [2024-10-24 16:40:40,132 INFO L226 Difference]: Without dead ends: 1225 [2024-10-24 16:40:40,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=266, Invalid=994, Unknown=0, NotChecked=0, Total=1260 [2024-10-24 16:40:40,133 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 193 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:40,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 331 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 16:40:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-10-24 16:40:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1219. [2024-10-24 16:40:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1216 states have (on average 1.252467105263158) internal successors, (1523), 1218 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1523 transitions. [2024-10-24 16:40:40,144 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1523 transitions. Word has length 59 [2024-10-24 16:40:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:40,144 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1523 transitions. [2024-10-24 16:40:40,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.0) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1523 transitions. [2024-10-24 16:40:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 16:40:40,145 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:40,145 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:40,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:40,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:40,346 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:40,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash 818330646, now seen corresponding path program 3 times [2024-10-24 16:40:40,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:40,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644393194] [2024-10-24 16:40:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 15 proven. 51 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-10-24 16:40:40,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:40,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644393194] [2024-10-24 16:40:40,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644393194] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:40,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651133333] [2024-10-24 16:40:40,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 16:40:40,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:40,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:40,625 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) [2024-10-24 16:40:40,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 16:40:40,720 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 16:40:40,720 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:40:40,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 16:40:40,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:40,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 16:40:40,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 16:40:40,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 16:40:40,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-24 16:40:40,838 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 16:40:40,838 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 [2024-10-24 16:40:40,842 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 [2024-10-24 16:40:40,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 16:40:40,961 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 33 treesize of output 27 [2024-10-24 16:40:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-24 16:40:41,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:41,188 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 18 [2024-10-24 16:40:41,190 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 24 treesize of output 15 [2024-10-24 16:40:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-10-24 16:40:41,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651133333] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:41,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:41,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 19 [2024-10-24 16:40:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059883579] [2024-10-24 16:40:41,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:41,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-24 16:40:41,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-24 16:40:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-10-24 16:40:41,350 INFO L87 Difference]: Start difference. First operand 1219 states and 1523 transitions. Second operand has 21 states, 20 states have (on average 3.85) internal successors, (77), 20 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) [2024-10-24 16:40:41,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:41,887 INFO L93 Difference]: Finished difference Result 2673 states and 3313 transitions. [2024-10-24 16:40:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 16:40:41,887 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 20 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 61 [2024-10-24 16:40:41,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:41,893 INFO L225 Difference]: With dead ends: 2673 [2024-10-24 16:40:41,893 INFO L226 Difference]: Without dead ends: 2623 [2024-10-24 16:40:41,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 16:40:41,894 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 1523 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:41,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1516 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 16:40:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2024-10-24 16:40:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 942. [2024-10-24 16:40:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 939 states have (on average 1.2044728434504792) internal successors, (1131), 941 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1131 transitions. [2024-10-24 16:40:41,907 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1131 transitions. Word has length 61 [2024-10-24 16:40:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:41,907 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1131 transitions. [2024-10-24 16:40:41,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 20 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) [2024-10-24 16:40:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1131 transitions. [2024-10-24 16:40:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 16:40:41,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:41,908 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:41,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:42,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:42,113 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:42,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:42,113 INFO L85 PathProgramCache]: Analyzing trace with hash -617772951, now seen corresponding path program 2 times [2024-10-24 16:40:42,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:42,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452731142] [2024-10-24 16:40:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:42,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-10-24 16:40:42,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:42,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452731142] [2024-10-24 16:40:42,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452731142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:42,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:42,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 16:40:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922261788] [2024-10-24 16:40:42,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:42,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:40:42,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:40:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:40:42,206 INFO L87 Difference]: Start difference. First operand 942 states and 1131 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:42,236 INFO L93 Difference]: Finished difference Result 941 states and 1123 transitions. [2024-10-24 16:40:42,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:40:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 16:40:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:42,238 INFO L225 Difference]: With dead ends: 941 [2024-10-24 16:40:42,238 INFO L226 Difference]: Without dead ends: 941 [2024-10-24 16:40:42,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:40:42,239 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:42,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:42,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-10-24 16:40:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 831. [2024-10-24 16:40:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 829 states have (on average 1.2002412545235224) internal successors, (995), 830 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 995 transitions. [2024-10-24 16:40:42,246 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 995 transitions. Word has length 65 [2024-10-24 16:40:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:42,246 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 995 transitions. [2024-10-24 16:40:42,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 995 transitions. [2024-10-24 16:40:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 16:40:42,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:42,247 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 5, 5, 4, 4, 4, 3, 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] [2024-10-24 16:40:42,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-10-24 16:40:42,247 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:42,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1340745215, now seen corresponding path program 1 times [2024-10-24 16:40:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383693219] [2024-10-24 16:40:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:42,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-24 16:40:42,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:42,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383693219] [2024-10-24 16:40:42,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383693219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:40:42,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:40:42,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 16:40:42,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532994573] [2024-10-24 16:40:42,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:40:42,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:40:42,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:42,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:40:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:40:42,305 INFO L87 Difference]: Start difference. First operand 831 states and 995 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:42,335 INFO L93 Difference]: Finished difference Result 443 states and 523 transitions. [2024-10-24 16:40:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:40:42,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 67 [2024-10-24 16:40:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:42,336 INFO L225 Difference]: With dead ends: 443 [2024-10-24 16:40:42,336 INFO L226 Difference]: Without dead ends: 78 [2024-10-24 16:40:42,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:40:42,337 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:42,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 66 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:40:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-24 16:40:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-10-24 16:40:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.025974025974026) internal successors, (79), 77 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) [2024-10-24 16:40:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2024-10-24 16:40:42,338 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 67 [2024-10-24 16:40:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:42,338 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2024-10-24 16:40:42,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2024-10-24 16:40:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 16:40:42,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:40:42,339 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2024-10-24 16:40:42,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-10-24 16:40:42,339 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-10-24 16:40:42,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:40:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1758820851, now seen corresponding path program 3 times [2024-10-24 16:40:42,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:40:42,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782180795] [2024-10-24 16:40:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:40:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:40:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:40:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 18 proven. 216 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-10-24 16:40:42,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:40:42,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782180795] [2024-10-24 16:40:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782180795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:40:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265973348] [2024-10-24 16:40:42,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 16:40:42,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:40:42,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:40:42,623 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) [2024-10-24 16:40:42,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-24 16:40:42,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 16:40:42,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:40:42,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 16:40:42,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:40:42,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 16:40:42,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 16:40:42,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-24 16:40:42,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-24 16:40:42,801 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-24 16:40:42,801 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 [2024-10-24 16:40:42,804 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 [2024-10-24 16:40:42,940 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 16:40:42,942 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 33 treesize of output 27 [2024-10-24 16:40:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-24 16:40:43,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:40:43,233 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 19 treesize of output 17 [2024-10-24 16:40:43,236 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 35 treesize of output 26 [2024-10-24 16:40:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-24 16:40:43,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265973348] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:40:43,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:40:43,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 23 [2024-10-24 16:40:43,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056682308] [2024-10-24 16:40:43,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:40:43,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 16:40:43,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:40:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 16:40:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2024-10-24 16:40:43,371 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:44,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:40:44,007 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2024-10-24 16:40:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-24 16:40:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 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 77 [2024-10-24 16:40:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:40:44,007 INFO L225 Difference]: With dead ends: 75 [2024-10-24 16:40:44,007 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 16:40:44,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=342, Invalid=2310, Unknown=0, NotChecked=0, Total=2652 [2024-10-24 16:40:44,008 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 16:40:44,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 246 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 16:40:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 16:40:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 16:40:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 16:40:44,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2024-10-24 16:40:44,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:40:44,009 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 16:40:44,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:40:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 16:40:44,009 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 16:40:44,011 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 24 remaining) [2024-10-24 16:40:44,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2024-10-24 16:40:44,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2024-10-24 16:40:44,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2024-10-24 16:40:44,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2024-10-24 16:40:44,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2024-10-24 16:40:44,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2024-10-24 16:40:44,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2024-10-24 16:40:44,012 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2024-10-24 16:40:44,013 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2024-10-24 16:40:44,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2024-10-24 16:40:44,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 24 remaining) [2024-10-24 16:40:44,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 24 remaining) [2024-10-24 16:40:44,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 24 remaining) [2024-10-24 16:40:44,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 24 remaining) [2024-10-24 16:40:44,014 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2024-10-24 16:40:44,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-24 16:40:44,218 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,SelfDestructingSolverStorable36 [2024-10-24 16:40:44,221 INFO L407 BasicCegarLoop]: Path program histogram: [3, 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] [2024-10-24 16:40:44,223 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 16:40:44,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:40:44 BoogieIcfgContainer [2024-10-24 16:40:44,225 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 16:40:44,225 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 16:40:44,225 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 16:40:44,225 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 16:40:44,226 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:40:19" (3/4) ... [2024-10-24 16:40:44,227 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 16:40:44,233 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-10-24 16:40:44,233 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-10-24 16:40:44,233 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 16:40:44,234 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 16:40:44,313 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 16:40:44,313 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 16:40:44,313 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 16:40:44,314 INFO L158 Benchmark]: Toolchain (without parser) took 25443.04ms. Allocated memory was 188.7MB in the beginning and 356.5MB in the end (delta: 167.8MB). Free memory was 121.3MB in the beginning and 153.8MB in the end (delta: -32.5MB). Peak memory consumption was 137.0MB. Max. memory is 16.1GB. [2024-10-24 16:40:44,316 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 16:40:44,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.38ms. Allocated memory is still 188.7MB. Free memory was 121.1MB in the beginning and 107.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 16:40:44,317 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.17ms. Allocated memory is still 188.7MB. Free memory was 107.4MB in the beginning and 105.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 16:40:44,317 INFO L158 Benchmark]: Boogie Preprocessor took 50.27ms. Allocated memory is still 188.7MB. Free memory was 105.4MB in the beginning and 102.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 16:40:44,317 INFO L158 Benchmark]: RCFGBuilder took 469.09ms. Allocated memory is still 188.7MB. Free memory was 102.9MB in the beginning and 139.7MB in the end (delta: -36.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 16:40:44,317 INFO L158 Benchmark]: TraceAbstraction took 24539.77ms. Allocated memory was 188.7MB in the beginning and 356.5MB in the end (delta: 167.8MB). Free memory was 139.1MB in the beginning and 160.1MB in the end (delta: -21.0MB). Peak memory consumption was 147.4MB. Max. memory is 16.1GB. [2024-10-24 16:40:44,317 INFO L158 Benchmark]: Witness Printer took 88.44ms. Allocated memory is still 356.5MB. Free memory was 159.0MB in the beginning and 153.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 16:40:44,319 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.38ms. Allocated memory is still 188.7MB. Free memory was 121.1MB in the beginning and 107.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.17ms. Allocated memory is still 188.7MB. Free memory was 107.4MB in the beginning and 105.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.27ms. Allocated memory is still 188.7MB. Free memory was 105.4MB in the beginning and 102.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 469.09ms. Allocated memory is still 188.7MB. Free memory was 102.9MB in the beginning and 139.7MB in the end (delta: -36.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 24539.77ms. Allocated memory was 188.7MB in the beginning and 356.5MB in the end (delta: 167.8MB). Free memory was 139.1MB in the beginning and 160.1MB in the end (delta: -21.0MB). Peak memory consumption was 147.4MB. Max. memory is 16.1GB. * Witness Printer took 88.44ms. Allocated memory is still 356.5MB. Free memory was 159.0MB in the beginning and 153.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 87]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 24.5s, OverallIterations: 37, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6934 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6934 mSDsluCounter, 22507 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19944 mSDsCounter, 297 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18280 IncrementalHoareTripleChecker+Invalid, 18577 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 297 mSolverCounterUnsat, 2563 mSDtfsCounter, 18280 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1489 GetRequests, 1001 SyntacticMatches, 14 SemanticMatches, 474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3012 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1320occurred in iteration=30, InterpolantAutomatonStates: 377, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 37 MinimizatonAttempts, 4578 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 1962 NumberOfCodeBlocks, 1858 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 2432 ConstructedInterpolants, 98 QuantifiedInterpolants, 20832 SizeOfPredicates, 48 NumberOfNonLiveVariables, 2778 ConjunctsInSsa, 248 ConjunctsInUnsatCore, 66 InterpolantComputations, 24 PerfectInterpolantSequences, 3985/4993 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 16:40:44,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE