./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/array-memsafety/cstrcspn-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/array-memsafety/cstrcspn-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15fe42cb945ebd9019cc38134c29264613097f232589ff55d01d33d66b19d85f --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:32:55,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:32:55,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-30 10:32:55,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:32:55,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:32:55,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:32:55,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:32:55,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:32:55,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:32:55,667 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:32:55,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:32:55,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:32:55,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:32:55,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:32:55,669 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:32:55,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:32:55,669 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:32:55,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:32:55,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:32:55,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:32:55,669 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:32:55,670 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:32:55,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:32:55,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:32:55,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:32:55,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:32:55,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:32:55,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:32:55,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:32:55,672 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 15fe42cb945ebd9019cc38134c29264613097f232589ff55d01d33d66b19d85f [2025-04-30 10:32:55,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:32:55,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:32:55,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:32:55,896 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:32:55,897 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:32:55,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrcspn-alloca-1.i [2025-04-30 10:32:57,204 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df971bd54/dbadf825d94845d880027b28cc4f1f93/FLAGedc65033e [2025-04-30 10:32:57,434 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:32:57,435 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/cstrcspn-alloca-1.i [2025-04-30 10:32:57,444 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df971bd54/dbadf825d94845d880027b28cc4f1f93/FLAGedc65033e [2025-04-30 10:32:58,205 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df971bd54/dbadf825d94845d880027b28cc4f1f93 [2025-04-30 10:32:58,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:32:58,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:32:58,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:32:58,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:32:58,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:32:58,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219cd4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58, skipping insertion in model container [2025-04-30 10:32:58,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,234 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:32:58,480 WARN L1150 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-04-30 10:32:58,481 WARN L1150 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-04-30 10:32:58,487 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:32:58,494 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:32:58,549 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:32:58,569 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:32:58,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58 WrapperNode [2025-04-30 10:32:58,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:32:58,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:32:58,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:32:58,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:32:58,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,595 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2025-04-30 10:32:58,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:32:58,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:32:58,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:32:58,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:32:58,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,615 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [4, 5]. 56 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2025-04-30 10:32:58,615 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,615 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,618 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,618 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:32:58,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:32:58,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:32:58,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:32:58,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (1/1) ... [2025-04-30 10:32:58,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:32:58,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:32:58,650 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) [2025-04-30 10:32:58,653 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 [2025-04-30 10:32:58,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-30 10:32:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-30 10:32:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-30 10:32:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-30 10:32:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-30 10:32:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-30 10:32:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:32:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:32:58,749 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:32:58,750 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:32:58,896 INFO L? ?]: Removed 64 outVars from TransFormulas that were not future-live. [2025-04-30 10:32:58,896 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:32:58,902 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:32:58,902 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-30 10:32:58,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:32:58 BoogieIcfgContainer [2025-04-30 10:32:58,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:32:58,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:32:58,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:32:58,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:32:58,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:32:58" (1/3) ... [2025-04-30 10:32:58,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea24fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:32:58, skipping insertion in model container [2025-04-30 10:32:58,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:58" (2/3) ... [2025-04-30 10:32:58,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea24fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:32:58, skipping insertion in model container [2025-04-30 10:32:58,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:32:58" (3/3) ... [2025-04-30 10:32:58,911 INFO L128 eAbstractionObserver]: Analyzing ICFG cstrcspn-alloca-1.i [2025-04-30 10:32:58,921 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:32:58,922 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cstrcspn-alloca-1.i that has 1 procedures, 52 locations, 61 edges, 1 initial locations, 4 loop locations, and 19 error locations. [2025-04-30 10:32:58,950 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:32:58,958 INFO L340 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;@2e6dc49a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:32:58,960 INFO L341 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-04-30 10:32:58,963 INFO L278 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.90625) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:58,966 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-30 10:32:58,966 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:58,966 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:32:58,967 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:32:58,970 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:58,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1805028968, now seen corresponding path program 1 times [2025-04-30 10:32:58,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:58,974 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941905144] [2025-04-30 10:32:58,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:58,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:59,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-30 10:32:59,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-30 10:32:59,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:59,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:32:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:32:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:32:59,134 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941905144] [2025-04-30 10:32:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941905144] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:32:59,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:32:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:32:59,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626848668] [2025-04-30 10:32:59,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:32:59,140 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:32:59,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:32:59,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:32:59,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:32:59,156 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.90625) internal successors, (61), 51 states have internal predecessors, (61), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:32:59,190 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2025-04-30 10:32:59,191 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:32:59,192 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-04-30 10:32:59,192 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:32:59,196 INFO L225 Difference]: With dead ends: 62 [2025-04-30 10:32:59,196 INFO L226 Difference]: Without dead ends: 60 [2025-04-30 10:32:59,197 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:32:59,199 INFO L437 NwaCegarLoop]: 55 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:32:59,199 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:32:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-04-30 10:32:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2025-04-30 10:32:59,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2025-04-30 10:32:59,224 INFO L79 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 7 [2025-04-30 10:32:59,225 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:32:59,225 INFO L485 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2025-04-30 10:32:59,225 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,225 INFO L278 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2025-04-30 10:32:59,225 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-30 10:32:59,225 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:59,225 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:32:59,226 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:32:59,226 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:32:59,227 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876010, now seen corresponding path program 1 times [2025-04-30 10:32:59,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:59,227 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773403608] [2025-04-30 10:32:59,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:59,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:59,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-30 10:32:59,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-30 10:32:59,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:59,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:32:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:32:59,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:32:59,354 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773403608] [2025-04-30 10:32:59,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773403608] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:32:59,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:32:59,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:32:59,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581044637] [2025-04-30 10:32:59,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:32:59,355 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:32:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:32:59,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:32:59,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:32:59,356 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:32:59,393 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2025-04-30 10:32:59,393 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:32:59,393 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-04-30 10:32:59,394 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:32:59,394 INFO L225 Difference]: With dead ends: 51 [2025-04-30 10:32:59,394 INFO L226 Difference]: Without dead ends: 51 [2025-04-30 10:32:59,394 INFO L436 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 [2025-04-30 10:32:59,395 INFO L437 NwaCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:32:59,395 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 69 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:32:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-04-30 10:32:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-04-30 10:32:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2025-04-30 10:32:59,398 INFO L79 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 7 [2025-04-30 10:32:59,398 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:32:59,398 INFO L485 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2025-04-30 10:32:59,398 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,398 INFO L278 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2025-04-30 10:32:59,398 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-30 10:32:59,398 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:59,398 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:32:59,399 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:32:59,399 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:32:59,399 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:59,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876011, now seen corresponding path program 1 times [2025-04-30 10:32:59,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:59,399 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490315237] [2025-04-30 10:32:59,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:59,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:59,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-30 10:32:59,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-30 10:32:59,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:59,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:32:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:32:59,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:32:59,601 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490315237] [2025-04-30 10:32:59,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490315237] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:32:59,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:32:59,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:32:59,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611032569] [2025-04-30 10:32:59,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:32:59,601 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:32:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:32:59,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:32:59,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:32:59,602 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:32:59,678 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2025-04-30 10:32:59,679 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:32:59,679 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-04-30 10:32:59,679 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:32:59,680 INFO L225 Difference]: With dead ends: 54 [2025-04-30 10:32:59,681 INFO L226 Difference]: Without dead ends: 54 [2025-04-30 10:32:59,682 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:32:59,682 INFO L437 NwaCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:32:59,683 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 117 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:32:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-04-30 10:32:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2025-04-30 10:32:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2025-04-30 10:32:59,690 INFO L79 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 7 [2025-04-30 10:32:59,691 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:32:59,691 INFO L485 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2025-04-30 10:32:59,691 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,691 INFO L278 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2025-04-30 10:32:59,691 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:32:59,691 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:59,691 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:32:59,691 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:32:59,691 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:32:59,692 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:59,692 INFO L85 PathProgramCache]: Analyzing trace with hash 121329398, now seen corresponding path program 1 times [2025-04-30 10:32:59,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:59,692 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503956923] [2025-04-30 10:32:59,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:59,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:59,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:32:59,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:32:59,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:59,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:32:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:32:59,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:32:59,831 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503956923] [2025-04-30 10:32:59,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503956923] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:32:59,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:32:59,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:32:59,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504620232] [2025-04-30 10:32:59,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:32:59,832 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:32:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:32:59,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:32:59,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:32:59,833 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:32:59,857 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2025-04-30 10:32:59,858 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:32:59,858 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:32:59,858 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:32:59,859 INFO L225 Difference]: With dead ends: 59 [2025-04-30 10:32:59,859 INFO L226 Difference]: Without dead ends: 59 [2025-04-30 10:32:59,859 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:32:59,860 INFO L437 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:32:59,861 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:32:59,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-04-30 10:32:59,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2025-04-30 10:32:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 40 states have (on average 1.725) internal successors, (69), 56 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) [2025-04-30 10:32:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2025-04-30 10:32:59,866 INFO L79 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 8 [2025-04-30 10:32:59,866 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:32:59,866 INFO L485 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2025-04-30 10:32:59,866 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,866 INFO L278 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2025-04-30 10:32:59,866 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:32:59,866 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:59,867 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:32:59,867 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-30 10:32:59,867 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:32:59,867 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash 121329206, now seen corresponding path program 1 times [2025-04-30 10:32:59,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:59,867 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028981509] [2025-04-30 10:32:59,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:59,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:32:59,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:32:59,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:59,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:32:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:32:59,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:32:59,910 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028981509] [2025-04-30 10:32:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028981509] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:32:59,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:32:59,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:32:59,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059749264] [2025-04-30 10:32:59,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:32:59,910 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:32:59,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:32:59,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:32:59,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:32:59,911 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:32:59,936 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2025-04-30 10:32:59,936 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:32:59,936 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:32:59,936 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:32:59,937 INFO L225 Difference]: With dead ends: 73 [2025-04-30 10:32:59,937 INFO L226 Difference]: Without dead ends: 73 [2025-04-30 10:32:59,937 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:32:59,937 INFO L437 NwaCegarLoop]: 51 mSDtfsCounter, 8 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:32:59,938 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 141 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:32:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-04-30 10:32:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2025-04-30 10:32:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.64) internal successors, (82), 66 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2025-04-30 10:32:59,945 INFO L79 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 8 [2025-04-30 10:32:59,945 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:32:59,945 INFO L485 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2025-04-30 10:32:59,945 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:59,945 INFO L278 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2025-04-30 10:32:59,946 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:32:59,946 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:59,946 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:32:59,946 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-30 10:32:59,946 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:32:59,946 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:59,946 INFO L85 PathProgramCache]: Analyzing trace with hash 123176248, now seen corresponding path program 1 times [2025-04-30 10:32:59,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:59,947 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178557135] [2025-04-30 10:32:59,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:59,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:59,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:32:59,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:32:59,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:59,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:00,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:00,096 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178557135] [2025-04-30 10:33:00,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178557135] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:00,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:00,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-30 10:33:00,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45095279] [2025-04-30 10:33:00,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:00,097 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:33:00,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:00,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:33:00,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:33:00,097 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:00,165 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2025-04-30 10:33:00,166 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:33:00,166 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:33:00,166 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:00,166 INFO L225 Difference]: With dead ends: 73 [2025-04-30 10:33:00,167 INFO L226 Difference]: Without dead ends: 73 [2025-04-30 10:33:00,167 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:33:00,167 INFO L437 NwaCegarLoop]: 39 mSDtfsCounter, 36 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:00,167 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 102 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:00,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-04-30 10:33:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2025-04-30 10:33:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.6666666666666667) internal successors, (90), 70 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2025-04-30 10:33:00,173 INFO L79 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 8 [2025-04-30 10:33:00,173 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:00,173 INFO L485 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2025-04-30 10:33:00,173 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:00,174 INFO L278 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2025-04-30 10:33:00,174 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:33:00,174 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:00,174 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:00,174 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-30 10:33:00,174 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:00,175 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:00,175 INFO L85 PathProgramCache]: Analyzing trace with hash 123176247, now seen corresponding path program 1 times [2025-04-30 10:33:00,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:00,175 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951832716] [2025-04-30 10:33:00,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:00,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:00,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:33:00,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:33:00,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:00,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:00,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:00,195 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951832716] [2025-04-30 10:33:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951832716] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:00,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:33:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067565093] [2025-04-30 10:33:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:00,195 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:33:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:00,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:33:00,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:33:00,196 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:00,219 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2025-04-30 10:33:00,219 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:33:00,220 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:33:00,220 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:00,220 INFO L225 Difference]: With dead ends: 69 [2025-04-30 10:33:00,220 INFO L226 Difference]: Without dead ends: 69 [2025-04-30 10:33:00,220 INFO L436 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 [2025-04-30 10:33:00,221 INFO L437 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:00,221 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 69 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-04-30 10:33:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-04-30 10:33:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 68 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) [2025-04-30 10:33:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2025-04-30 10:33:00,223 INFO L79 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 8 [2025-04-30 10:33:00,223 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:00,223 INFO L485 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2025-04-30 10:33:00,223 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:00,226 INFO L278 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2025-04-30 10:33:00,227 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:33:00,227 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:00,227 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:00,227 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-30 10:33:00,227 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:00,227 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:00,227 INFO L85 PathProgramCache]: Analyzing trace with hash 178587700, now seen corresponding path program 1 times [2025-04-30 10:33:00,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:00,228 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168007764] [2025-04-30 10:33:00,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:00,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:33:00,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:33:00,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:00,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:00,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:00,355 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168007764] [2025-04-30 10:33:00,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168007764] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:00,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:00,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:33:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287058301] [2025-04-30 10:33:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:00,356 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:33:00,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:00,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:33:00,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:33:00,357 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:00,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:00,405 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2025-04-30 10:33:00,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:33:00,405 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-30 10:33:00,406 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:00,406 INFO L225 Difference]: With dead ends: 79 [2025-04-30 10:33:00,406 INFO L226 Difference]: Without dead ends: 79 [2025-04-30 10:33:00,406 INFO L436 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 [2025-04-30 10:33:00,407 INFO L437 NwaCegarLoop]: 44 mSDtfsCounter, 22 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:00,407 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 106 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:00,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-04-30 10:33:00,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2025-04-30 10:33:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 68 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) [2025-04-30 10:33:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2025-04-30 10:33:00,415 INFO L79 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 8 [2025-04-30 10:33:00,415 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:00,415 INFO L485 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2025-04-30 10:33:00,415 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:00,415 INFO L278 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2025-04-30 10:33:00,416 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-30 10:33:00,416 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:00,416 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:00,416 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-30 10:33:00,416 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:00,416 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:00,416 INFO L85 PathProgramCache]: Analyzing trace with hash -533755979, now seen corresponding path program 1 times [2025-04-30 10:33:00,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:00,416 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397461871] [2025-04-30 10:33:00,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:00,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:00,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-30 10:33:00,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-30 10:33:00,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:00,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:00,493 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397461871] [2025-04-30 10:33:00,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397461871] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:00,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:00,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:33:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381417892] [2025-04-30 10:33:00,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:00,494 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:33:00,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:00,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:33:00,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:33:00,494 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2025-04-30 10:33:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:00,510 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2025-04-30 10:33:00,510 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:33:00,510 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-04-30 10:33:00,510 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:00,510 INFO L225 Difference]: With dead ends: 74 [2025-04-30 10:33:00,511 INFO L226 Difference]: Without dead ends: 74 [2025-04-30 10:33:00,511 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:33:00,511 INFO L437 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:00,511 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:00,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-04-30 10:33:00,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2025-04-30 10:33:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.5614035087719298) internal successors, (89), 71 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2025-04-30 10:33:00,514 INFO L79 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 9 [2025-04-30 10:33:00,514 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:00,514 INFO L485 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2025-04-30 10:33:00,514 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2025-04-30 10:33:00,514 INFO L278 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2025-04-30 10:33:00,514 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-04-30 10:33:00,514 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:00,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:00,515 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-30 10:33:00,515 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:00,515 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:00,515 INFO L85 PathProgramCache]: Analyzing trace with hash -476497677, now seen corresponding path program 1 times [2025-04-30 10:33:00,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:00,515 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435621813] [2025-04-30 10:33:00,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:00,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-30 10:33:00,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-30 10:33:00,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:00,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:00,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:00,609 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435621813] [2025-04-30 10:33:00,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435621813] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:00,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:00,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:33:00,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354808631] [2025-04-30 10:33:00,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:00,609 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:33:00,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:00,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:33:00,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:33:00,610 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2025-04-30 10:33:00,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:00,643 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2025-04-30 10:33:00,644 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:33:00,644 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-04-30 10:33:00,644 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:00,644 INFO L225 Difference]: With dead ends: 71 [2025-04-30 10:33:00,644 INFO L226 Difference]: Without dead ends: 71 [2025-04-30 10:33:00,644 INFO L436 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 [2025-04-30 10:33:00,645 INFO L437 NwaCegarLoop]: 40 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:00,645 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-30 10:33:00,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2025-04-30 10:33:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 54 states have (on average 1.5555555555555556) internal successors, (84), 67 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) [2025-04-30 10:33:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2025-04-30 10:33:00,647 INFO L79 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 9 [2025-04-30 10:33:00,647 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:00,647 INFO L485 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2025-04-30 10:33:00,647 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2025-04-30 10:33:00,647 INFO L278 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2025-04-30 10:33:00,647 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-04-30 10:33:00,647 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:00,648 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:00,648 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-04-30 10:33:00,648 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:00,648 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash -181913935, now seen corresponding path program 1 times [2025-04-30 10:33:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:00,649 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078192373] [2025-04-30 10:33:00,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:00,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-30 10:33:00,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-30 10:33:00,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:00,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:00,805 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078192373] [2025-04-30 10:33:00,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078192373] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:00,805 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316430202] [2025-04-30 10:33:00,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:00,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:00,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:00,808 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) [2025-04-30 10:33:00,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-30 10:33:00,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-04-30 10:33:00,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-04-30 10:33:00,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:00,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:00,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-04-30 10:33:00,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:00,916 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-30 10:33:00,919 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2025-04-30 10:33:00,926 INFO L354 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 10 treesize of output 8 [2025-04-30 10:33:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:01,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:01,171 INFO L172 IndexEqualityManager]: detected equality via solver [2025-04-30 10:33:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:01,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316430202] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:01,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:01,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-04-30 10:33:01,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529044338] [2025-04-30 10:33:01,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:01,188 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-30 10:33:01,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:01,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-30 10:33:01,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-04-30 10:33:01,189 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 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) [2025-04-30 10:33:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:01,389 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2025-04-30 10:33:01,390 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:33:01,390 INFO L79 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 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 10 [2025-04-30 10:33:01,390 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:01,390 INFO L225 Difference]: With dead ends: 71 [2025-04-30 10:33:01,390 INFO L226 Difference]: Without dead ends: 71 [2025-04-30 10:33:01,391 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2025-04-30 10:33:01,391 INFO L437 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:01,391 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 326 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-04-30 10:33:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2025-04-30 10:33:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 64 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2025-04-30 10:33:01,393 INFO L79 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 10 [2025-04-30 10:33:01,393 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:01,393 INFO L485 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2025-04-30 10:33:01,394 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 13 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) [2025-04-30 10:33:01,394 INFO L278 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2025-04-30 10:33:01,394 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-30 10:33:01,394 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:01,394 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:01,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-30 10:33:01,594 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-04-30 10:33:01,594 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:01,595 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1838388167, now seen corresponding path program 1 times [2025-04-30 10:33:01,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:01,595 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393800206] [2025-04-30 10:33:01,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:01,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:01,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:33:01,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:33:01,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:01,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:01,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:01,681 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393800206] [2025-04-30 10:33:01,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393800206] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:01,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:01,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-30 10:33:01,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840409094] [2025-04-30 10:33:01,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:01,682 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-30 10:33:01,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:01,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-30 10:33:01,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:33:01,682 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2025-04-30 10:33:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:01,758 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2025-04-30 10:33:01,758 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-30 10:33:01,758 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 [2025-04-30 10:33:01,758 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:01,759 INFO L225 Difference]: With dead ends: 89 [2025-04-30 10:33:01,759 INFO L226 Difference]: Without dead ends: 89 [2025-04-30 10:33:01,759 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:33:01,759 INFO L437 NwaCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:01,760 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 106 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-04-30 10:33:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2025-04-30 10:33:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 68 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2025-04-30 10:33:01,762 INFO L79 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 11 [2025-04-30 10:33:01,762 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:01,762 INFO L485 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2025-04-30 10:33:01,762 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2025-04-30 10:33:01,762 INFO L278 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2025-04-30 10:33:01,762 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-30 10:33:01,763 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:01,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:01,763 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-30 10:33:01,763 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:01,763 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1838388168, now seen corresponding path program 1 times [2025-04-30 10:33:01,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:01,763 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831451809] [2025-04-30 10:33:01,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:01,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:01,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:33:01,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:33:01,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:01,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:01,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:01,802 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831451809] [2025-04-30 10:33:01,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831451809] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:01,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:01,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:33:01,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907900529] [2025-04-30 10:33:01,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:01,803 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:33:01,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:01,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:33:01,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:33:01,804 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2025-04-30 10:33:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:01,834 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2025-04-30 10:33:01,834 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:33:01,834 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 [2025-04-30 10:33:01,834 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:01,835 INFO L225 Difference]: With dead ends: 67 [2025-04-30 10:33:01,835 INFO L226 Difference]: Without dead ends: 67 [2025-04-30 10:33:01,835 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:33:01,835 INFO L437 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:01,835 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 62 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-04-30 10:33:01,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2025-04-30 10:33:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 66 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) [2025-04-30 10:33:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2025-04-30 10:33:01,837 INFO L79 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 11 [2025-04-30 10:33:01,837 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:01,837 INFO L485 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2025-04-30 10:33:01,837 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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) [2025-04-30 10:33:01,837 INFO L278 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2025-04-30 10:33:01,837 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-30 10:33:01,837 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:01,838 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:01,838 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-04-30 10:33:01,838 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:01,838 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:01,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1641506446, now seen corresponding path program 1 times [2025-04-30 10:33:01,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:01,839 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946348370] [2025-04-30 10:33:01,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:01,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:01,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:33:01,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:33:01,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:01,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:01,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:01,969 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946348370] [2025-04-30 10:33:01,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946348370] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:01,969 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869288401] [2025-04-30 10:33:01,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:01,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:01,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:01,971 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) [2025-04-30 10:33:01,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-30 10:33:02,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:33:02,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:33:02,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:02,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:02,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-04-30 10:33:02,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:02,030 INFO L354 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 7 [2025-04-30 10:33:02,036 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-04-30 10:33:02,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:02,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:02,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869288401] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:02,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:02,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2025-04-30 10:33:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562787335] [2025-04-30 10:33:02,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:02,294 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-04-30 10:33:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:02,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-04-30 10:33:02,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-04-30 10:33:02,295 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 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) [2025-04-30 10:33:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:02,470 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2025-04-30 10:33:02,470 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:33:02,471 INFO L79 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 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 11 [2025-04-30 10:33:02,471 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:02,471 INFO L225 Difference]: With dead ends: 70 [2025-04-30 10:33:02,471 INFO L226 Difference]: Without dead ends: 70 [2025-04-30 10:33:02,472 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2025-04-30 10:33:02,472 INFO L437 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:02,473 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 212 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:02,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-04-30 10:33:02,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2025-04-30 10:33:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 52 states have (on average 1.4423076923076923) 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) [2025-04-30 10:33:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2025-04-30 10:33:02,476 INFO L79 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 11 [2025-04-30 10:33:02,476 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:02,476 INFO L485 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2025-04-30 10:33:02,476 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 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) [2025-04-30 10:33:02,476 INFO L278 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2025-04-30 10:33:02,476 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-04-30 10:33:02,476 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:02,476 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:02,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-30 10:33:02,677 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-04-30 10:33:02,677 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:02,677 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1344358482, now seen corresponding path program 1 times [2025-04-30 10:33:02,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:02,678 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378248031] [2025-04-30 10:33:02,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:02,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:02,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:33:02,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:33:02,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:02,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:02,822 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378248031] [2025-04-30 10:33:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378248031] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:02,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-30 10:33:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110934816] [2025-04-30 10:33:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:02,822 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-30 10:33:02,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:02,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-30 10:33:02,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:33:02,823 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) 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) [2025-04-30 10:33:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:02,870 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2025-04-30 10:33:02,870 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-30 10:33:02,870 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) 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 [2025-04-30 10:33:02,871 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:02,871 INFO L225 Difference]: With dead ends: 61 [2025-04-30 10:33:02,871 INFO L226 Difference]: Without dead ends: 61 [2025-04-30 10:33:02,871 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:33:02,872 INFO L437 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:02,873 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:02,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-04-30 10:33:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2025-04-30 10:33:02,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2025-04-30 10:33:02,874 INFO L79 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 11 [2025-04-30 10:33:02,874 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:02,874 INFO L485 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2025-04-30 10:33:02,874 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) 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) [2025-04-30 10:33:02,874 INFO L278 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2025-04-30 10:33:02,874 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-30 10:33:02,874 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:02,874 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:02,874 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-04-30 10:33:02,874 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:02,875 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1903627462, now seen corresponding path program 1 times [2025-04-30 10:33:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:02,875 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606140256] [2025-04-30 10:33:02,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:02,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-30 10:33:02,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-30 10:33:02,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:02,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:03,006 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606140256] [2025-04-30 10:33:03,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606140256] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:03,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:03,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:33:03,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790684579] [2025-04-30 10:33:03,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:03,007 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:33:03,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:03,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:33:03,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:33:03,007 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2025-04-30 10:33:03,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:03,043 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2025-04-30 10:33:03,043 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:33:03,043 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 15 [2025-04-30 10:33:03,043 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:03,044 INFO L225 Difference]: With dead ends: 53 [2025-04-30 10:33:03,044 INFO L226 Difference]: Without dead ends: 50 [2025-04-30 10:33:03,044 INFO L436 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 [2025-04-30 10:33:03,044 INFO L437 NwaCegarLoop]: 32 mSDtfsCounter, 32 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:03,045 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 62 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-04-30 10:33:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-04-30 10:33:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.380952380952381) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2025-04-30 10:33:03,047 INFO L79 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 15 [2025-04-30 10:33:03,047 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:03,047 INFO L485 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2025-04-30 10:33:03,047 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2025-04-30 10:33:03,047 INFO L278 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2025-04-30 10:33:03,048 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-30 10:33:03,048 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:03,048 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:03,048 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-04-30 10:33:03,048 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:03,048 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1120262430, now seen corresponding path program 1 times [2025-04-30 10:33:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:03,048 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298569132] [2025-04-30 10:33:03,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:03,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:03,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-30 10:33:03,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-30 10:33:03,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:03,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:03,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:03,093 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298569132] [2025-04-30 10:33:03,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298569132] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:03,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:03,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-30 10:33:03,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131266751] [2025-04-30 10:33:03,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:03,094 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-30 10:33:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:03,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-30 10:33:03,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:33:03,095 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 5 states, 4 states have (on average 4.0) 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) [2025-04-30 10:33:03,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:03,128 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2025-04-30 10:33:03,128 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-30 10:33:03,128 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) 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 16 [2025-04-30 10:33:03,128 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:03,129 INFO L225 Difference]: With dead ends: 47 [2025-04-30 10:33:03,129 INFO L226 Difference]: Without dead ends: 47 [2025-04-30 10:33:03,129 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-30 10:33:03,129 INFO L437 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:03,129 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 62 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-04-30 10:33:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2025-04-30 10:33:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2025-04-30 10:33:03,130 INFO L79 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 16 [2025-04-30 10:33:03,130 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:03,130 INFO L485 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2025-04-30 10:33:03,131 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) 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) [2025-04-30 10:33:03,131 INFO L278 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2025-04-30 10:33:03,131 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-04-30 10:33:03,131 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:03,131 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:03,131 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-04-30 10:33:03,131 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:03,131 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:03,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1120262429, now seen corresponding path program 1 times [2025-04-30 10:33:03,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:03,132 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898414099] [2025-04-30 10:33:03,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:03,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:03,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-30 10:33:03,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-30 10:33:03,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:03,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:03,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:03,256 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898414099] [2025-04-30 10:33:03,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898414099] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:03,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:03,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-30 10:33:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737985916] [2025-04-30 10:33:03,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:03,256 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-30 10:33:03,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:03,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-30 10:33:03,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:33:03,257 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) 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) [2025-04-30 10:33:03,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:03,331 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2025-04-30 10:33:03,331 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:33:03,331 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) 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 16 [2025-04-30 10:33:03,331 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:03,332 INFO L225 Difference]: With dead ends: 59 [2025-04-30 10:33:03,332 INFO L226 Difference]: Without dead ends: 59 [2025-04-30 10:33:03,332 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:33:03,332 INFO L437 NwaCegarLoop]: 19 mSDtfsCounter, 54 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:03,332 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-04-30 10:33:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2025-04-30 10:33:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 53 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2025-04-30 10:33:03,334 INFO L79 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 16 [2025-04-30 10:33:03,334 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:03,334 INFO L485 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2025-04-30 10:33:03,334 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) 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) [2025-04-30 10:33:03,334 INFO L278 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2025-04-30 10:33:03,334 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-04-30 10:33:03,334 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:03,334 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:03,334 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-04-30 10:33:03,334 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:03,336 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash -756721741, now seen corresponding path program 1 times [2025-04-30 10:33:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:03,337 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839551568] [2025-04-30 10:33:03,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:03,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-04-30 10:33:03,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-04-30 10:33:03,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:03,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:03,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:03,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839551568] [2025-04-30 10:33:03,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839551568] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:03,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:03,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:33:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264754960] [2025-04-30 10:33:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:03,359 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:33:03,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:03,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:33:03,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:33:03,359 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:03,365 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2025-04-30 10:33:03,365 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:33:03,365 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-04-30 10:33:03,365 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:03,365 INFO L225 Difference]: With dead ends: 56 [2025-04-30 10:33:03,365 INFO L226 Difference]: Without dead ends: 56 [2025-04-30 10:33:03,366 INFO L436 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 [2025-04-30 10:33:03,366 INFO L437 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:03,366 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-04-30 10:33:03,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-04-30 10:33:03,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2025-04-30 10:33:03,367 INFO L79 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 21 [2025-04-30 10:33:03,367 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:03,367 INFO L485 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2025-04-30 10:33:03,367 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,367 INFO L278 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2025-04-30 10:33:03,368 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-30 10:33:03,368 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:03,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:03,368 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-04-30 10:33:03,368 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:03,368 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1983473118, now seen corresponding path program 1 times [2025-04-30 10:33:03,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:03,368 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004153484] [2025-04-30 10:33:03,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:03,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-30 10:33:03,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-30 10:33:03,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:03,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:03,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:03,489 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004153484] [2025-04-30 10:33:03,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004153484] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:03,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:03,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-04-30 10:33:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755358780] [2025-04-30 10:33:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:03,489 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-30 10:33:03,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:03,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-30 10:33:03,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-30 10:33:03,490 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:03,525 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2025-04-30 10:33:03,525 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-30 10:33:03,526 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-30 10:33:03,526 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:03,526 INFO L225 Difference]: With dead ends: 65 [2025-04-30 10:33:03,526 INFO L226 Difference]: Without dead ends: 51 [2025-04-30 10:33:03,526 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-04-30 10:33:03,527 INFO L437 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:03,528 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 159 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-04-30 10:33:03,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-04-30 10:33:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2025-04-30 10:33:03,530 INFO L79 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 22 [2025-04-30 10:33:03,530 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:03,530 INFO L485 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2025-04-30 10:33:03,530 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,530 INFO L278 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2025-04-30 10:33:03,531 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-04-30 10:33:03,531 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:03,531 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:03,531 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-04-30 10:33:03,531 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:03,532 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1493845728, now seen corresponding path program 1 times [2025-04-30 10:33:03,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:03,533 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309777843] [2025-04-30 10:33:03,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:03,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:03,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-04-30 10:33:03,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-04-30 10:33:03,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:03,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:03,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:03,643 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309777843] [2025-04-30 10:33:03,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309777843] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:03,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:03,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-04-30 10:33:03,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838967923] [2025-04-30 10:33:03,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:03,644 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-04-30 10:33:03,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:03,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-04-30 10:33:03,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-04-30 10:33:03,644 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:03,682 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2025-04-30 10:33:03,682 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-30 10:33:03,682 INFO L79 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-04-30 10:33:03,682 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:03,682 INFO L225 Difference]: With dead ends: 66 [2025-04-30 10:33:03,682 INFO L226 Difference]: Without dead ends: 57 [2025-04-30 10:33:03,683 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:33:03,683 INFO L437 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 163 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 [2025-04-30 10:33:03,683 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 163 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-04-30 10:33:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2025-04-30 10:33:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2025-04-30 10:33:03,685 INFO L79 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 22 [2025-04-30 10:33:03,685 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:03,685 INFO L485 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2025-04-30 10:33:03,685 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:03,685 INFO L278 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2025-04-30 10:33:03,686 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-04-30 10:33:03,686 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:03,686 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:03,686 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-04-30 10:33:03,686 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:03,686 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1229563686, now seen corresponding path program 1 times [2025-04-30 10:33:03,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:03,686 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188657434] [2025-04-30 10:33:03,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:03,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:03,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-30 10:33:03,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-30 10:33:03,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:03,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:03,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:03,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:03,810 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188657434] [2025-04-30 10:33:03,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188657434] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:03,810 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803696538] [2025-04-30 10:33:03,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:03,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:03,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:03,812 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) [2025-04-30 10:33:03,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-30 10:33:03,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-04-30 10:33:03,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-04-30 10:33:03,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:03,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:03,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-30 10:33:03,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:03,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:04,056 INFO L354 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 5 treesize of output 3 [2025-04-30 10:33:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:04,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803696538] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:04,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:04,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-04-30 10:33:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807872181] [2025-04-30 10:33:04,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:04,075 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-04-30 10:33:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:04,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-04-30 10:33:04,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-04-30 10:33:04,076 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:04,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:04,209 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2025-04-30 10:33:04,210 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:33:04,211 INFO L79 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-04-30 10:33:04,211 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:04,211 INFO L225 Difference]: With dead ends: 104 [2025-04-30 10:33:04,211 INFO L226 Difference]: Without dead ends: 104 [2025-04-30 10:33:04,211 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-04-30 10:33:04,213 INFO L437 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:04,213 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 271 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-04-30 10:33:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 72. [2025-04-30 10:33:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 71 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2025-04-30 10:33:04,215 INFO L79 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 25 [2025-04-30 10:33:04,215 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:04,215 INFO L485 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2025-04-30 10:33:04,215 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:04,215 INFO L278 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2025-04-30 10:33:04,215 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-30 10:33:04,215 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:04,216 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:04,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-30 10:33:04,420 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:04,420 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:04,420 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash 355867422, now seen corresponding path program 1 times [2025-04-30 10:33:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:04,420 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226759964] [2025-04-30 10:33:04,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:04,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:33:04,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:33:04,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:04,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:04,591 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226759964] [2025-04-30 10:33:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226759964] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-04-30 10:33:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312732622] [2025-04-30 10:33:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:04,591 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-04-30 10:33:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:04,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-04-30 10:33:04,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-04-30 10:33:04,592 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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) [2025-04-30 10:33:04,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:04,657 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2025-04-30 10:33:04,657 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-04-30 10:33:04,657 INFO L79 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 26 [2025-04-30 10:33:04,658 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:04,658 INFO L225 Difference]: With dead ends: 99 [2025-04-30 10:33:04,659 INFO L226 Difference]: Without dead ends: 99 [2025-04-30 10:33:04,659 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-04-30 10:33:04,659 INFO L437 NwaCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:04,659 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 196 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:33:04,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-04-30 10:33:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2025-04-30 10:33:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 97 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2025-04-30 10:33:04,662 INFO L79 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 26 [2025-04-30 10:33:04,662 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:04,662 INFO L485 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2025-04-30 10:33:04,662 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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) [2025-04-30 10:33:04,662 INFO L278 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2025-04-30 10:33:04,662 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-04-30 10:33:04,663 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:04,663 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:04,663 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-04-30 10:33:04,663 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:04,663 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1449570912, now seen corresponding path program 1 times [2025-04-30 10:33:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:04,663 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226496733] [2025-04-30 10:33:04,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:04,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-30 10:33:04,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-30 10:33:04,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:04,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:04,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:04,848 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226496733] [2025-04-30 10:33:04,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226496733] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:33:04,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:33:04,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-04-30 10:33:04,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33392861] [2025-04-30 10:33:04,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:33:04,849 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-04-30 10:33:04,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:04,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-04-30 10:33:04,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-04-30 10:33:04,849 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:04,924 INFO L93 Difference]: Finished difference Result 128 states and 145 transitions. [2025-04-30 10:33:04,924 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-30 10:33:04,924 INFO L79 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-04-30 10:33:04,924 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:04,925 INFO L225 Difference]: With dead ends: 128 [2025-04-30 10:33:04,925 INFO L226 Difference]: Without dead ends: 128 [2025-04-30 10:33:04,925 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-04-30 10:33:04,925 INFO L437 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:04,925 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 173 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-04-30 10:33:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2025-04-30 10:33:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.2210526315789474) internal successors, (116), 98 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2025-04-30 10:33:04,927 INFO L79 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 26 [2025-04-30 10:33:04,927 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:04,927 INFO L485 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2025-04-30 10:33:04,927 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:04,927 INFO L278 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2025-04-30 10:33:04,928 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-04-30 10:33:04,928 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:04,928 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:04,928 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-04-30 10:33:04,928 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:04,928 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash -228241934, now seen corresponding path program 1 times [2025-04-30 10:33:04,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:04,929 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793998837] [2025-04-30 10:33:04,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:04,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:04,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-30 10:33:04,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-30 10:33:04,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:04,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:05,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:05,099 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793998837] [2025-04-30 10:33:05,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793998837] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:05,099 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61304382] [2025-04-30 10:33:05,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:33:05,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:05,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:05,101 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) [2025-04-30 10:33:05,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-30 10:33:05,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-04-30 10:33:05,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-04-30 10:33:05,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:33:05,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:05,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-04-30 10:33:05,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:05,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:05,376 INFO L354 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 21 treesize of output 17 [2025-04-30 10:33:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61304382] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:05,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:05,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2025-04-30 10:33:05,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570598852] [2025-04-30 10:33:05,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:05,444 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-04-30 10:33:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:05,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-04-30 10:33:05,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2025-04-30 10:33:05,444 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:05,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:05,607 INFO L93 Difference]: Finished difference Result 120 states and 138 transitions. [2025-04-30 10:33:05,607 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-04-30 10:33:05,607 INFO L79 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-04-30 10:33:05,607 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:05,608 INFO L225 Difference]: With dead ends: 120 [2025-04-30 10:33:05,608 INFO L226 Difference]: Without dead ends: 120 [2025-04-30 10:33:05,608 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2025-04-30 10:33:05,609 INFO L437 NwaCegarLoop]: 38 mSDtfsCounter, 142 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:05,609 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 208 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:05,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-04-30 10:33:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 97. [2025-04-30 10:33:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 96 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2025-04-30 10:33:05,611 INFO L79 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 29 [2025-04-30 10:33:05,611 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:05,611 INFO L485 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2025-04-30 10:33:05,612 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:05,612 INFO L278 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2025-04-30 10:33:05,612 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-30 10:33:05,612 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:05,612 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:05,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-30 10:33:05,816 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:05,816 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:05,816 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1458950431, now seen corresponding path program 2 times [2025-04-30 10:33:05,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:05,816 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573018343] [2025-04-30 10:33:05,816 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:33:05,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:05,824 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-30 10:33:05,834 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-30 10:33:05,834 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:33:05,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:06,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:06,308 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573018343] [2025-04-30 10:33:06,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573018343] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:06,308 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112005218] [2025-04-30 10:33:06,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:33:06,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:06,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:06,310 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) [2025-04-30 10:33:06,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-04-30 10:33:06,352 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-30 10:33:06,371 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-30 10:33:06,371 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:33:06,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:06,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-04-30 10:33:06,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:06,441 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-04-30 10:33:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:06,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:06,697 INFO L354 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 15 treesize of output 13 [2025-04-30 10:33:06,700 INFO L354 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 16 treesize of output 12 [2025-04-30 10:33:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:06,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112005218] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:06,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:06,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 30 [2025-04-30 10:33:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860921307] [2025-04-30 10:33:06,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:06,753 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-04-30 10:33:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:06,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-04-30 10:33:06,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2025-04-30 10:33:06,755 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:07,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:07,124 INFO L93 Difference]: Finished difference Result 173 states and 194 transitions. [2025-04-30 10:33:07,124 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-04-30 10:33:07,124 INFO L79 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-04-30 10:33:07,124 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:07,125 INFO L225 Difference]: With dead ends: 173 [2025-04-30 10:33:07,125 INFO L226 Difference]: Without dead ends: 137 [2025-04-30 10:33:07,126 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2025-04-30 10:33:07,126 INFO L437 NwaCegarLoop]: 23 mSDtfsCounter, 29 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:07,126 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 377 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-04-30 10:33:07,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-04-30 10:33:07,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2025-04-30 10:33:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 128 states have (on average 1.15625) internal successors, (148), 129 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:07,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 148 transitions. [2025-04-30 10:33:07,131 INFO L79 Accepts]: Start accepts. Automaton has 130 states and 148 transitions. Word has length 36 [2025-04-30 10:33:07,131 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:07,131 INFO L485 AbstractCegarLoop]: Abstraction has 130 states and 148 transitions. [2025-04-30 10:33:07,132 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:07,132 INFO L278 IsEmpty]: Start isEmpty. Operand 130 states and 148 transitions. [2025-04-30 10:33:07,132 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-30 10:33:07,132 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:07,132 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:07,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-04-30 10:33:07,332 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-04-30 10:33:07,333 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:07,333 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:07,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1129669401, now seen corresponding path program 2 times [2025-04-30 10:33:07,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:07,333 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719135842] [2025-04-30 10:33:07,333 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:33:07,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:07,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-30 10:33:07,363 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-30 10:33:07,363 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:33:07,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:07,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:07,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:07,773 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719135842] [2025-04-30 10:33:07,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719135842] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:07,773 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981015615] [2025-04-30 10:33:07,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-30 10:33:07,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:07,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:07,775 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) [2025-04-30 10:33:07,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-04-30 10:33:07,821 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-04-30 10:33:07,841 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-04-30 10:33:07,841 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-30 10:33:07,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:07,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-04-30 10:33:07,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:07,902 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-04-30 10:33:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:08,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:08,047 INFO L354 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 15 treesize of output 13 [2025-04-30 10:33:08,049 INFO L354 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 16 treesize of output 12 [2025-04-30 10:33:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:08,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981015615] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:08,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 26 [2025-04-30 10:33:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735756666] [2025-04-30 10:33:08,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:08,102 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-04-30 10:33:08,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:08,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-04-30 10:33:08,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2025-04-30 10:33:08,105 INFO L87 Difference]: Start difference. First operand 130 states and 148 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:08,699 INFO L93 Difference]: Finished difference Result 257 states and 287 transitions. [2025-04-30 10:33:08,699 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-04-30 10:33:08,699 INFO L79 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-04-30 10:33:08,699 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:08,700 INFO L225 Difference]: With dead ends: 257 [2025-04-30 10:33:08,700 INFO L226 Difference]: Without dead ends: 239 [2025-04-30 10:33:08,701 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=2015, Unknown=0, NotChecked=0, Total=2256 [2025-04-30 10:33:08,701 INFO L437 NwaCegarLoop]: 42 mSDtfsCounter, 140 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:08,701 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 546 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-04-30 10:33:08,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-04-30 10:33:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 197. [2025-04-30 10:33:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 1.1538461538461537) internal successors, (225), 196 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 225 transitions. [2025-04-30 10:33:08,705 INFO L79 Accepts]: Start accepts. Automaton has 197 states and 225 transitions. Word has length 36 [2025-04-30 10:33:08,705 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:08,705 INFO L485 AbstractCegarLoop]: Abstraction has 197 states and 225 transitions. [2025-04-30 10:33:08,705 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:08,705 INFO L278 IsEmpty]: Start isEmpty. Operand 197 states and 225 transitions. [2025-04-30 10:33:08,705 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-04-30 10:33:08,705 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:08,705 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:08,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-04-30 10:33:08,906 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-04-30 10:33:08,906 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:08,906 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:08,906 INFO L85 PathProgramCache]: Analyzing trace with hash -66436261, now seen corresponding path program 3 times [2025-04-30 10:33:08,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:08,906 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655749053] [2025-04-30 10:33:08,906 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:33:08,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:08,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 3 equivalence classes. [2025-04-30 10:33:08,925 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 39 of 39 statements. [2025-04-30 10:33:08,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-30 10:33:08,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:09,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:09,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655749053] [2025-04-30 10:33:09,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655749053] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:09,119 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801344905] [2025-04-30 10:33:09,119 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:33:09,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:09,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:09,122 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) [2025-04-30 10:33:09,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-04-30 10:33:09,166 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 3 equivalence classes. [2025-04-30 10:33:09,186 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 39 of 39 statements. [2025-04-30 10:33:09,186 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-04-30 10:33:09,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:09,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-04-30 10:33:09,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:09,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:09,414 INFO L354 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 7 treesize of output 5 [2025-04-30 10:33:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:09,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801344905] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:09,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:09,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-04-30 10:33:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359960856] [2025-04-30 10:33:09,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:09,444 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-04-30 10:33:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:09,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-04-30 10:33:09,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2025-04-30 10:33:09,445 INFO L87 Difference]: Start difference. First operand 197 states and 225 transitions. Second operand has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:09,594 INFO L93 Difference]: Finished difference Result 315 states and 358 transitions. [2025-04-30 10:33:09,594 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-04-30 10:33:09,594 INFO L79 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-04-30 10:33:09,594 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:09,595 INFO L225 Difference]: With dead ends: 315 [2025-04-30 10:33:09,595 INFO L226 Difference]: Without dead ends: 315 [2025-04-30 10:33:09,596 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2025-04-30 10:33:09,596 INFO L437 NwaCegarLoop]: 33 mSDtfsCounter, 96 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:09,596 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 305 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-30 10:33:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2025-04-30 10:33:09,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 256. [2025-04-30 10:33:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 254 states have (on average 1.1535433070866141) internal successors, (293), 255 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 293 transitions. [2025-04-30 10:33:09,601 INFO L79 Accepts]: Start accepts. Automaton has 256 states and 293 transitions. Word has length 39 [2025-04-30 10:33:09,601 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:09,601 INFO L485 AbstractCegarLoop]: Abstraction has 256 states and 293 transitions. [2025-04-30 10:33:09,601 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 20 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:09,601 INFO L278 IsEmpty]: Start isEmpty. Operand 256 states and 293 transitions. [2025-04-30 10:33:09,601 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-04-30 10:33:09,602 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:09,602 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:09,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-04-30 10:33:09,803 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:09,805 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:09,805 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1335890368, now seen corresponding path program 3 times [2025-04-30 10:33:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:09,806 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9201998] [2025-04-30 10:33:09,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:33:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:09,813 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 46 statements into 4 equivalence classes. [2025-04-30 10:33:09,836 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 46 of 46 statements. [2025-04-30 10:33:09,836 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-30 10:33:09,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:33:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:10,650 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9201998] [2025-04-30 10:33:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9201998] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:10,650 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477664999] [2025-04-30 10:33:10,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-30 10:33:10,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:10,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:10,652 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) [2025-04-30 10:33:10,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-04-30 10:33:10,702 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 46 statements into 4 equivalence classes. [2025-04-30 10:33:10,729 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 46 of 46 statements. [2025-04-30 10:33:10,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-04-30 10:33:10,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:10,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-04-30 10:33:10,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:10,814 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-04-30 10:33:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:10,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:10,919 INFO L354 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 15 treesize of output 13 [2025-04-30 10:33:10,927 INFO L354 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 16 treesize of output 12 [2025-04-30 10:33:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:10,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477664999] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:10,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:10,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 31 [2025-04-30 10:33:10,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692601568] [2025-04-30 10:33:10,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:10,983 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-04-30 10:33:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:10,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-04-30 10:33:10,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=832, Unknown=0, NotChecked=0, Total=930 [2025-04-30 10:33:10,984 INFO L87 Difference]: Start difference. First operand 256 states and 293 transitions. Second operand has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 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) [2025-04-30 10:33:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:11,844 INFO L93 Difference]: Finished difference Result 387 states and 437 transitions. [2025-04-30 10:33:11,844 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-04-30 10:33:11,844 INFO L79 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-04-30 10:33:11,844 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:11,845 INFO L225 Difference]: With dead ends: 387 [2025-04-30 10:33:11,845 INFO L226 Difference]: Without dead ends: 362 [2025-04-30 10:33:11,847 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=339, Invalid=3321, Unknown=0, NotChecked=0, Total=3660 [2025-04-30 10:33:11,847 INFO L437 NwaCegarLoop]: 38 mSDtfsCounter, 107 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:11,847 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 644 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-04-30 10:33:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-04-30 10:33:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 341. [2025-04-30 10:33:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 339 states have (on average 1.1563421828908556) internal successors, (392), 340 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) [2025-04-30 10:33:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 392 transitions. [2025-04-30 10:33:11,857 INFO L79 Accepts]: Start accepts. Automaton has 341 states and 392 transitions. Word has length 46 [2025-04-30 10:33:11,857 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:11,857 INFO L485 AbstractCegarLoop]: Abstraction has 341 states and 392 transitions. [2025-04-30 10:33:11,858 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 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) [2025-04-30 10:33:11,858 INFO L278 IsEmpty]: Start isEmpty. Operand 341 states and 392 transitions. [2025-04-30 10:33:11,858 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-04-30 10:33:11,858 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:11,858 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:11,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-04-30 10:33:12,058 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-04-30 10:33:12,059 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:12,059 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:12,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1540714094, now seen corresponding path program 4 times [2025-04-30 10:33:12,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:12,060 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881738644] [2025-04-30 10:33:12,060 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:33:12,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:12,069 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-04-30 10:33:12,085 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 40 of 49 statements. [2025-04-30 10:33:12,086 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-30 10:33:12,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-30 10:33:12,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:12,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881738644] [2025-04-30 10:33:12,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881738644] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:12,791 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525295986] [2025-04-30 10:33:12,791 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:33:12,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:12,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:12,794 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) [2025-04-30 10:33:12,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-04-30 10:33:12,849 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-04-30 10:33:12,873 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 40 of 49 statements. [2025-04-30 10:33:12,873 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-30 10:33:12,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:12,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-04-30 10:33:12,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:12,900 INFO L354 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 14 treesize of output 10 [2025-04-30 10:33:13,645 INFO L325 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2025-04-30 10:33:13,646 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2025-04-30 10:33:13,755 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-04-30 10:33:13,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:14,414 INFO L354 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 44 treesize of output 38 [2025-04-30 10:33:14,422 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2025-04-30 10:33:14,427 INFO L354 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 5 treesize of output 3 [2025-04-30 10:33:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-04-30 10:33:14,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525295986] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:14,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:14,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17, 17] total 50 [2025-04-30 10:33:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552018482] [2025-04-30 10:33:14,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:14,440 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-04-30 10:33:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:14,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-04-30 10:33:14,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=2262, Unknown=0, NotChecked=0, Total=2550 [2025-04-30 10:33:14,441 INFO L87 Difference]: Start difference. First operand 341 states and 392 transitions. Second operand has 51 states, 50 states have (on average 2.16) internal successors, (108), 51 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:21,685 INFO L93 Difference]: Finished difference Result 424 states and 477 transitions. [2025-04-30 10:33:21,685 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-04-30 10:33:21,685 INFO L79 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 2.16) internal successors, (108), 51 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-04-30 10:33:21,685 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:21,686 INFO L225 Difference]: With dead ends: 424 [2025-04-30 10:33:21,686 INFO L226 Difference]: Without dead ends: 377 [2025-04-30 10:33:21,687 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1014, Invalid=6468, Unknown=0, NotChecked=0, Total=7482 [2025-04-30 10:33:21,688 INFO L437 NwaCegarLoop]: 34 mSDtfsCounter, 125 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:21,688 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 541 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-04-30 10:33:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2025-04-30 10:33:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 255. [2025-04-30 10:33:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.1377952755905512) internal successors, (289), 254 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 289 transitions. [2025-04-30 10:33:21,693 INFO L79 Accepts]: Start accepts. Automaton has 255 states and 289 transitions. Word has length 49 [2025-04-30 10:33:21,693 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:21,693 INFO L485 AbstractCegarLoop]: Abstraction has 255 states and 289 transitions. [2025-04-30 10:33:21,693 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 2.16) internal successors, (108), 51 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:33:21,693 INFO L278 IsEmpty]: Start isEmpty. Operand 255 states and 289 transitions. [2025-04-30 10:33:21,695 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-04-30 10:33:21,695 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:33:21,695 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:21,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-04-30 10:33:21,898 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:21,898 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-04-30 10:33:21,898 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:33:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash 595876288, now seen corresponding path program 4 times [2025-04-30 10:33:21,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:33:21,898 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773822302] [2025-04-30 10:33:21,898 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:33:21,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:33:21,907 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-04-30 10:33:21,914 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 46 of 50 statements. [2025-04-30 10:33:21,915 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-30 10:33:21,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-30 10:33:22,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:33:22,324 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773822302] [2025-04-30 10:33:22,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773822302] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-30 10:33:22,324 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661867752] [2025-04-30 10:33:22,325 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-30 10:33:22,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:33:22,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:33:22,327 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) [2025-04-30 10:33:22,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-04-30 10:33:22,381 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-04-30 10:33:22,398 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 46 of 50 statements. [2025-04-30 10:33:22,398 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-30 10:33:22,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:33:22,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-04-30 10:33:22,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:33:22,435 INFO L354 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 14 treesize of output 10 [2025-04-30 10:33:24,293 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-30 10:33:24,293 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 125 [2025-04-30 10:33:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-30 10:33:24,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-30 10:33:25,460 INFO L354 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 44 treesize of output 38 [2025-04-30 10:33:25,465 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2025-04-30 10:33:25,470 INFO L354 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 5 treesize of output 3 [2025-04-30 10:33:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-04-30 10:33:25,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661867752] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-30 10:33:25,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-30 10:33:25,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 28, 21] total 56 [2025-04-30 10:33:25,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780754112] [2025-04-30 10:33:25,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-30 10:33:25,488 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-04-30 10:33:25,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:33:25,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-04-30 10:33:25,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=619, Invalid=2573, Unknown=0, NotChecked=0, Total=3192 [2025-04-30 10:33:25,489 INFO L87 Difference]: Start difference. First operand 255 states and 289 transitions. Second operand has 57 states, 56 states have (on average 2.125) internal successors, (119), 57 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) [2025-04-30 10:33:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:33:29,001 INFO L93 Difference]: Finished difference Result 648 states and 727 transitions. [2025-04-30 10:33:29,001 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-04-30 10:33:29,001 INFO L79 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.125) internal successors, (119), 57 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 50 [2025-04-30 10:33:29,002 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:33:29,002 INFO L225 Difference]: With dead ends: 648 [2025-04-30 10:33:29,002 INFO L226 Difference]: Without dead ends: 0 [2025-04-30 10:33:29,004 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3499 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3040, Invalid=10070, Unknown=0, NotChecked=0, Total=13110 [2025-04-30 10:33:29,004 INFO L437 NwaCegarLoop]: 27 mSDtfsCounter, 157 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-04-30 10:33:29,004 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 435 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-04-30 10:33:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-30 10:33:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-30 10:33:29,004 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) [2025-04-30 10:33:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-30 10:33:29,005 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2025-04-30 10:33:29,005 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:33:29,005 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-30 10:33:29,005 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.125) internal successors, (119), 57 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) [2025-04-30 10:33:29,005 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-30 10:33:29,005 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 19 remaining) [2025-04-30 10:33:29,007 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 19 remaining) [2025-04-30 10:33:29,008 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 19 remaining) [2025-04-30 10:33:29,008 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 19 remaining) [2025-04-30 10:33:29,008 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 19 remaining) [2025-04-30 10:33:29,008 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 19 remaining) [2025-04-30 10:33:29,008 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 19 remaining) [2025-04-30 10:33:29,008 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 19 remaining) [2025-04-30 10:33:29,008 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (0 of 19 remaining) [2025-04-30 10:33:29,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-04-30 10:33:29,208 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-04-30 10:33:29,210 INFO L422 BasicCegarLoop]: Path program histogram: [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:33:29,212 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:33:29,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:33:29 BoogieIcfgContainer [2025-04-30 10:33:29,215 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:33:29,217 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:33:29,218 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:33:29,218 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:33:29,218 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:32:58" (3/4) ... [2025-04-30 10:33:29,219 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-30 10:33:29,225 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-04-30 10:33:29,225 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-04-30 10:33:29,226 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-30 10:33:29,226 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-30 10:33:29,278 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:33:29,278 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:33:29,278 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:33:29,279 INFO L158 Benchmark]: Toolchain (without parser) took 31070.82ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 112.3MB in the beginning and 200.1MB in the end (delta: -87.7MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. [2025-04-30 10:33:29,280 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:33:29,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.89ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 92.2MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-30 10:33:29,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.48ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 90.5MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:33:29,281 INFO L158 Benchmark]: Boogie Preprocessor took 27.63ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 88.3MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:33:29,281 INFO L158 Benchmark]: RCFGBuilder took 278.51ms. Allocated memory is still 142.6MB. Free memory was 88.3MB in the beginning and 71.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-30 10:33:29,281 INFO L158 Benchmark]: TraceAbstraction took 30311.40ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 71.1MB in the beginning and 208.0MB in the end (delta: -137.0MB). Peak memory consumption was 84.7MB. Max. memory is 16.1GB. [2025-04-30 10:33:29,281 INFO L158 Benchmark]: Witness Printer took 60.99ms. Allocated memory is still 360.7MB. Free memory was 204.1MB in the beginning and 200.1MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:33:29,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.89ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 92.2MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.48ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 90.5MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.63ms. Allocated memory is still 142.6MB. Free memory was 90.5MB in the beginning and 88.3MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 278.51ms. Allocated memory is still 142.6MB. Free memory was 88.3MB in the beginning and 71.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 30311.40ms. Allocated memory was 142.6MB in the beginning and 360.7MB in the end (delta: 218.1MB). Free memory was 71.1MB in the beginning and 208.0MB in the end (delta: -137.0MB). Peak memory consumption was 84.7MB. Max. memory is 16.1GB. * Witness Printer took 60.99ms. Allocated memory is still 360.7MB. Free memory was 204.1MB in the beginning and 200.1MB in the end (delta: 4.0MB). There was no memory consumed. 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: 529]: 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, 52 locations, 61 edges, 19 error locations. Started 1 CEGAR loops. OverallTime: 30.3s, OverallIterations: 31, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1334 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1334 mSDsluCounter, 6139 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4999 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7357 IncrementalHoareTripleChecker+Invalid, 7426 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 1140 mSDtfsCounter, 7357 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1049 GetRequests, 515 SyntacticMatches, 15 SemanticMatches, 519 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7441 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=29, InterpolantAutomatonStates: 382, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 419 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 938 NumberOfCodeBlocks, 912 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 1218 ConstructedInterpolants, 83 QuantifiedInterpolants, 14803 SizeOfPredicates, 88 NumberOfNonLiveVariables, 1547 ConjunctsInSsa, 339 ConjunctsInUnsatCore, 51 InterpolantComputations, 21 PerfectInterpolantSequences, 150/488 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-30 10:33:29,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE