./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-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 a775ba6b744ab5ffb556747687a592ac2a696b9fe34bb3e21dc1471ba5c99e1a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:17:36,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:17:36,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:17:36,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:17:36,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:17:36,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:17:36,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:17:36,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:17:36,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:17:36,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:17:36,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:17:36,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:17:36,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:17:36,584 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:17:36,584 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:17:36,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:17:36,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:17:36,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:17:36,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:17:36,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:17:36,587 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:17:36,590 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:17:36,590 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:17:36,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:17:36,590 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:17:36,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:17:36,591 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:17:36,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:17:36,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:17:36,592 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:17:36,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:17:36,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:17:36,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:17:36,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:17:36,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:17:36,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:17:36,593 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:17:36,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:17:36,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:17:36,594 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:17:36,594 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:17:36,594 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:17:36,595 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a775ba6b744ab5ffb556747687a592ac2a696b9fe34bb3e21dc1471ba5c99e1a [2024-11-17 00:17:36,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:17:36,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:17:36,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:17:36,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:17:36,895 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:17:36,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i [2024-11-17 00:17:38,404 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:17:38,647 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:17:38,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrlcpy-alloca-1.i [2024-11-17 00:17:38,669 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056e0d3e6/922ffdfd956d4cd4827bb6b8165e1550/FLAGd8648abbb [2024-11-17 00:17:38,996 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056e0d3e6/922ffdfd956d4cd4827bb6b8165e1550 [2024-11-17 00:17:38,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:17:38,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:17:39,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:17:39,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:17:39,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:17:39,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:17:38" (1/1) ... [2024-11-17 00:17:39,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adf016e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39, skipping insertion in model container [2024-11-17 00:17:39,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:17:38" (1/1) ... [2024-11-17 00:17:39,052 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:17:39,369 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 00:17:39,371 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 00:17:39,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:17:39,389 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:17:39,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:17:39,472 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:17:39,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39 WrapperNode [2024-11-17 00:17:39,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:17:39,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:17:39,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:17:39,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:17:39,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,521 INFO L138 Inliner]: procedures = 117, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2024-11-17 00:17:39,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:17:39,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:17:39,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:17:39,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:17:39,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,549 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,575 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [4, 4]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 6 writes are split as follows [4, 2]. [2024-11-17 00:17:39,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,585 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:17:39,597 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:17:39,597 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:17:39,597 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:17:39,598 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (1/1) ... [2024-11-17 00:17:39,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:17:39,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:39,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 00:17:39,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 00:17:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 00:17:39,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 00:17:39,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:17:39,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 00:17:39,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 00:17:39,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:17:39,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:17:39,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:17:39,808 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:17:39,810 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:17:40,006 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L542: call ULTIMATE.dealloc(main_#t~malloc10#1.base, main_#t~malloc10#1.offset);havoc main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call ULTIMATE.dealloc(main_#t~malloc11#1.base, main_#t~malloc11#1.offset);havoc main_#t~malloc11#1.base, main_#t~malloc11#1.offset; [2024-11-17 00:17:40,023 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-17 00:17:40,024 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:17:40,038 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:17:40,038 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:17:40,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:17:40 BoogieIcfgContainer [2024-11-17 00:17:40,038 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:17:40,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:17:40,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:17:40,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:17:40,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:17:38" (1/3) ... [2024-11-17 00:17:40,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ec61d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:17:40, skipping insertion in model container [2024-11-17 00:17:40,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:39" (2/3) ... [2024-11-17 00:17:40,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ec61d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:17:40, skipping insertion in model container [2024-11-17 00:17:40,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:17:40" (3/3) ... [2024-11-17 00:17:40,045 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlcpy-alloca-1.i [2024-11-17 00:17:40,059 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:17:40,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-17 00:17:40,108 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:17:40,116 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a36ac66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:17:40,117 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 00:17:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 53 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 00:17:40,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:40,128 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:40,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:40,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash 773234679, now seen corresponding path program 1 times [2024-11-17 00:17:40,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:40,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387560907] [2024-11-17 00:17:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387560907] [2024-11-17 00:17:40,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387560907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:40,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:40,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:40,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457113526] [2024-11-17 00:17:40,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:40,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:40,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:40,498 INFO L87 Difference]: Start difference. First operand has 54 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 53 states have internal predecessors, (67), 0 states have call successors, (0), 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 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) [2024-11-17 00:17:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:40,569 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-17 00:17:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:40,571 INFO L78 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 [2024-11-17 00:17:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:40,578 INFO L225 Difference]: With dead ends: 71 [2024-11-17 00:17:40,579 INFO L226 Difference]: Without dead ends: 68 [2024-11-17 00:17:40,581 INFO L431 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 [2024-11-17 00:17:40,585 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 15 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:40,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 163 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-17 00:17:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2024-11-17 00:17:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 54 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2024-11-17 00:17:40,623 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 8 [2024-11-17 00:17:40,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:40,623 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2024-11-17 00:17:40,623 INFO L472 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) [2024-11-17 00:17:40,624 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2024-11-17 00:17:40,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 00:17:40,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:40,624 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:40,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:17:40,625 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:40,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash 801863830, now seen corresponding path program 1 times [2024-11-17 00:17:40,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:40,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637995054] [2024-11-17 00:17:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:40,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:40,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637995054] [2024-11-17 00:17:40,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637995054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:40,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:40,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:17:40,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87410790] [2024-11-17 00:17:40,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:40,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:17:40,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:40,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:17:40,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:17:40,809 INFO L87 Difference]: Start difference. First operand 55 states and 65 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) [2024-11-17 00:17:40,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:40,874 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-17 00:17:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:17:40,875 INFO L78 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 [2024-11-17 00:17:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:40,876 INFO L225 Difference]: With dead ends: 53 [2024-11-17 00:17:40,876 INFO L226 Difference]: Without dead ends: 53 [2024-11-17 00:17:40,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:17:40,878 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:40,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:40,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-17 00:17:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-17 00:17:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 52 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2024-11-17 00:17:40,888 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 8 [2024-11-17 00:17:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:40,889 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2024-11-17 00:17:40,889 INFO L472 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) [2024-11-17 00:17:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2024-11-17 00:17:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 00:17:40,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:40,890 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:40,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:17:40,890 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:40,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 801863831, now seen corresponding path program 1 times [2024-11-17 00:17:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:40,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401961795] [2024-11-17 00:17:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:41,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401961795] [2024-11-17 00:17:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401961795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:41,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503547210] [2024-11-17 00:17:41,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:41,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:17:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:17:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:41,133 INFO L87 Difference]: Start difference. First operand 53 states and 63 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) [2024-11-17 00:17:41,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:41,244 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-11-17 00:17:41,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:17:41,244 INFO L78 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 [2024-11-17 00:17:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:41,245 INFO L225 Difference]: With dead ends: 57 [2024-11-17 00:17:41,246 INFO L226 Difference]: Without dead ends: 57 [2024-11-17 00:17:41,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:17:41,247 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 26 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:41,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-17 00:17:41,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2024-11-17 00:17:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-17 00:17:41,253 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 8 [2024-11-17 00:17:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:41,254 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-17 00:17:41,254 INFO L472 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) [2024-11-17 00:17:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-17 00:17:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-17 00:17:41,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:41,255 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:41,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:17:41,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:41,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1522831804, now seen corresponding path program 1 times [2024-11-17 00:17:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155555268] [2024-11-17 00:17:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:41,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:41,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:41,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:41,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155555268] [2024-11-17 00:17:41,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155555268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:41,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:41,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:41,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847635919] [2024-11-17 00:17:41,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:41,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:41,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:41,325 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 4 states, 4 states have (on average 2.75) 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) [2024-11-17 00:17:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:41,350 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2024-11-17 00:17:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:41,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) 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 [2024-11-17 00:17:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:41,352 INFO L225 Difference]: With dead ends: 77 [2024-11-17 00:17:41,352 INFO L226 Difference]: Without dead ends: 77 [2024-11-17 00:17:41,352 INFO L431 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 [2024-11-17 00:17:41,354 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 10 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:41,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 111 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-17 00:17:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2024-11-17 00:17:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.5272727272727273) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2024-11-17 00:17:41,360 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 11 [2024-11-17 00:17:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:41,361 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2024-11-17 00:17:41,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) 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) [2024-11-17 00:17:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2024-11-17 00:17:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-17 00:17:41,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:41,362 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:41,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:17:41,363 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:41,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1029325157, now seen corresponding path program 1 times [2024-11-17 00:17:41,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:41,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711877262] [2024-11-17 00:17:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:41,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:41,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711877262] [2024-11-17 00:17:41,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711877262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:41,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:41,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:17:41,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703263971] [2024-11-17 00:17:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:41,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:17:41,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:41,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:17:41,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:17:41,477 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:41,517 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2024-11-17 00:17:41,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:17:41,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-17 00:17:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:41,519 INFO L225 Difference]: With dead ends: 68 [2024-11-17 00:17:41,519 INFO L226 Difference]: Without dead ends: 68 [2024-11-17 00:17:41,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:17:41,522 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:41,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 73 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:41,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-17 00:17:41,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-17 00:17:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.490909090909091) internal successors, (82), 67 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2024-11-17 00:17:41,532 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 11 [2024-11-17 00:17:41,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:41,533 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2024-11-17 00:17:41,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:41,533 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2024-11-17 00:17:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-17 00:17:41,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:41,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:41,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:17:41,535 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:41,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1029325156, now seen corresponding path program 1 times [2024-11-17 00:17:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:41,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844840922] [2024-11-17 00:17:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:41,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:41,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:41,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844840922] [2024-11-17 00:17:41,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844840922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:41,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:41,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:17:41,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859519569] [2024-11-17 00:17:41,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:41,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:17:41,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:17:41,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:17:41,765 INFO L87 Difference]: Start difference. First operand 68 states and 82 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) [2024-11-17 00:17:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:41,869 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2024-11-17 00:17:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:17:41,870 INFO L78 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 [2024-11-17 00:17:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:41,870 INFO L225 Difference]: With dead ends: 72 [2024-11-17 00:17:41,871 INFO L226 Difference]: Without dead ends: 72 [2024-11-17 00:17:41,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:17:41,873 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 22 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:41,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 132 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-17 00:17:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-11-17 00:17:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 70 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2024-11-17 00:17:41,885 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 11 [2024-11-17 00:17:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:41,886 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2024-11-17 00:17:41,886 INFO L472 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) [2024-11-17 00:17:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2024-11-17 00:17:41,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-17 00:17:41,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:41,886 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:41,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 00:17:41,887 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:41,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:41,887 INFO L85 PathProgramCache]: Analyzing trace with hash -36856302, now seen corresponding path program 1 times [2024-11-17 00:17:41,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:41,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548803960] [2024-11-17 00:17:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:41,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:42,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:42,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548803960] [2024-11-17 00:17:42,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548803960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:42,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:42,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:17:42,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309473296] [2024-11-17 00:17:42,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:42,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:42,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:42,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:42,047 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:42,083 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2024-11-17 00:17:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:42,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-17 00:17:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:42,122 INFO L225 Difference]: With dead ends: 77 [2024-11-17 00:17:42,122 INFO L226 Difference]: Without dead ends: 77 [2024-11-17 00:17:42,124 INFO L431 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 [2024-11-17 00:17:42,125 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:42,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 95 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:42,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-17 00:17:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2024-11-17 00:17:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 72 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) [2024-11-17 00:17:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-11-17 00:17:42,135 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 12 [2024-11-17 00:17:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:42,135 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-11-17 00:17:42,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:42,136 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-11-17 00:17:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-17 00:17:42,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:42,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:42,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 00:17:42,137 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:42,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:42,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1844310765, now seen corresponding path program 1 times [2024-11-17 00:17:42,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:42,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298483760] [2024-11-17 00:17:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:42,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:42,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:42,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298483760] [2024-11-17 00:17:42,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298483760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:42,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:42,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:17:42,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207590364] [2024-11-17 00:17:42,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:42,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:17:42,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:42,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:17:42,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:17:42,364 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:42,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:42,437 INFO L93 Difference]: Finished difference Result 79 states and 94 transitions. [2024-11-17 00:17:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:17:42,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-17 00:17:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:42,439 INFO L225 Difference]: With dead ends: 79 [2024-11-17 00:17:42,439 INFO L226 Difference]: Without dead ends: 79 [2024-11-17 00:17:42,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:17:42,440 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:42,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 133 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:42,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-17 00:17:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-11-17 00:17:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 72 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) [2024-11-17 00:17:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-11-17 00:17:42,445 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 12 [2024-11-17 00:17:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:42,445 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-11-17 00:17:42,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:42,446 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-11-17 00:17:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-17 00:17:42,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:42,447 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:42,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 00:17:42,447 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:42,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash -174161031, now seen corresponding path program 1 times [2024-11-17 00:17:42,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:42,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666829428] [2024-11-17 00:17:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:42,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:42,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666829428] [2024-11-17 00:17:42,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666829428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716457254] [2024-11-17 00:17:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:42,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:42,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:42,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:42,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:17:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:42,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 00:17:42,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:42,838 INFO L378 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 [2024-11-17 00:17:42,849 INFO L378 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 8 treesize of output 1 [2024-11-17 00:17:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:43,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:43,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716457254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:17:43,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:17:43,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-17 00:17:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19454325] [2024-11-17 00:17:43,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:17:43,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 00:17:43,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:43,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 00:17:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:17:43,239 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:43,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:43,471 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2024-11-17 00:17:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:17:43,472 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 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 12 [2024-11-17 00:17:43,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:43,473 INFO L225 Difference]: With dead ends: 78 [2024-11-17 00:17:43,474 INFO L226 Difference]: Without dead ends: 78 [2024-11-17 00:17:43,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:17:43,475 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 33 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:43,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 251 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-17 00:17:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2024-11-17 00:17:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 65 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-11-17 00:17:43,483 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 12 [2024-11-17 00:17:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:43,484 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-11-17 00:17:43,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-11-17 00:17:43,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-17 00:17:43,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:43,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:43,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 00:17:43,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:43,690 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:43,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1142545382, now seen corresponding path program 1 times [2024-11-17 00:17:43,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:43,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355775129] [2024-11-17 00:17:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:43,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:43,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:43,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355775129] [2024-11-17 00:17:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355775129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:43,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:43,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:17:43,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934580948] [2024-11-17 00:17:43,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:43,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:43,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:43,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:43,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:43,793 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:43,837 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2024-11-17 00:17:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:43,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-17 00:17:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:43,838 INFO L225 Difference]: With dead ends: 84 [2024-11-17 00:17:43,838 INFO L226 Difference]: Without dead ends: 84 [2024-11-17 00:17:43,838 INFO L431 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 [2024-11-17 00:17:43,839 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:43,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 128 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-17 00:17:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-17 00:17:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 70 states have (on average 1.4) internal successors, (98), 81 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2024-11-17 00:17:43,843 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 13 [2024-11-17 00:17:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:43,846 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2024-11-17 00:17:43,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2024-11-17 00:17:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-17 00:17:43,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:43,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:43,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 00:17:43,848 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:43,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:43,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1355470555, now seen corresponding path program 1 times [2024-11-17 00:17:43,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:43,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587685644] [2024-11-17 00:17:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:43,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:43,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:43,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587685644] [2024-11-17 00:17:43,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587685644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:43,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:43,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:43,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193944633] [2024-11-17 00:17:43,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:43,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:17:43,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:17:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:43,987 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:44,047 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2024-11-17 00:17:44,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:17:44,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-17 00:17:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:44,049 INFO L225 Difference]: With dead ends: 108 [2024-11-17 00:17:44,049 INFO L226 Difference]: Without dead ends: 108 [2024-11-17 00:17:44,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:44,049 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 24 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:44,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 139 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-17 00:17:44,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2024-11-17 00:17:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 85 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2024-11-17 00:17:44,053 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 13 [2024-11-17 00:17:44,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:44,053 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2024-11-17 00:17:44,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:44,054 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2024-11-17 00:17:44,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-17 00:17:44,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:44,054 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:44,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 00:17:44,055 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:44,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1713837118, now seen corresponding path program 1 times [2024-11-17 00:17:44,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:44,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001147195] [2024-11-17 00:17:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:44,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001147195] [2024-11-17 00:17:44,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001147195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:44,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27703187] [2024-11-17 00:17:44,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:44,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:44,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:44,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:44,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:17:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:44,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 00:17:44,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:44,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:17:44,423 INFO L378 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 [2024-11-17 00:17:44,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-17 00:17:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:44,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:44,915 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:17:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27703187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:17:44,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:17:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-17 00:17:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233013014] [2024-11-17 00:17:44,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:17:44,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 00:17:44,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:44,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 00:17:44,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2024-11-17 00:17:44,968 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:45,199 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2024-11-17 00:17:45,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:17:45,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-17 00:17:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:45,200 INFO L225 Difference]: With dead ends: 91 [2024-11-17 00:17:45,200 INFO L226 Difference]: Without dead ends: 91 [2024-11-17 00:17:45,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2024-11-17 00:17:45,201 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:45,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 285 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-17 00:17:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2024-11-17 00:17:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 72 states have (on average 1.3888888888888888) internal successors, (100), 82 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-11-17 00:17:45,208 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 15 [2024-11-17 00:17:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:45,208 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-11-17 00:17:45,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-11-17 00:17:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-17 00:17:45,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:45,210 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:45,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 00:17:45,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-17 00:17:45,411 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:45,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1589341105, now seen corresponding path program 1 times [2024-11-17 00:17:45,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:45,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865375781] [2024-11-17 00:17:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:45,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:45,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865375781] [2024-11-17 00:17:45,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865375781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:45,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:45,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:17:45,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689542996] [2024-11-17 00:17:45,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:45,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:17:45,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:17:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:17:45,583 INFO L87 Difference]: Start difference. First operand 83 states and 100 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) [2024-11-17 00:17:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:45,628 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2024-11-17 00:17:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:17:45,629 INFO L78 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 [2024-11-17 00:17:45,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:45,629 INFO L225 Difference]: With dead ends: 82 [2024-11-17 00:17:45,629 INFO L226 Difference]: Without dead ends: 82 [2024-11-17 00:17:45,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:17:45,630 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 13 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:45,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 131 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:45,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-17 00:17:45,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2024-11-17 00:17:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.375) internal successors, (88), 73 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) [2024-11-17 00:17:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2024-11-17 00:17:45,633 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 16 [2024-11-17 00:17:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:45,634 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2024-11-17 00:17:45,634 INFO L472 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) [2024-11-17 00:17:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2024-11-17 00:17:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-17 00:17:45,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:45,637 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:45,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 00:17:45,638 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:45,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:45,638 INFO L85 PathProgramCache]: Analyzing trace with hash -923449031, now seen corresponding path program 1 times [2024-11-17 00:17:45,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:45,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179575653] [2024-11-17 00:17:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:45,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:45,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179575653] [2024-11-17 00:17:45,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179575653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183501045] [2024-11-17 00:17:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:45,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:45,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:45,871 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:45,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:17:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:45,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 00:17:45,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:45,960 INFO L378 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 [2024-11-17 00:17:45,970 INFO L378 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 8 treesize of output 1 [2024-11-17 00:17:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:46,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:46,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183501045] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:46,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:17:46,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 14 [2024-11-17 00:17:46,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666708782] [2024-11-17 00:17:46,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:46,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:17:46,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:17:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:17:46,301 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:46,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:46,409 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2024-11-17 00:17:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:17:46,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-17 00:17:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:46,410 INFO L225 Difference]: With dead ends: 75 [2024-11-17 00:17:46,410 INFO L226 Difference]: Without dead ends: 75 [2024-11-17 00:17:46,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:17:46,411 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 22 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:46,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 145 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-17 00:17:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2024-11-17 00:17:46,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2024-11-17 00:17:46,413 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2024-11-17 00:17:46,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:46,413 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2024-11-17 00:17:46,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:46,413 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2024-11-17 00:17:46,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-17 00:17:46,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:46,414 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:46,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 00:17:46,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:46,619 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:46,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1568381160, now seen corresponding path program 1 times [2024-11-17 00:17:46,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:46,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521955425] [2024-11-17 00:17:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:46,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:46,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521955425] [2024-11-17 00:17:46,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521955425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:46,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:46,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125346495] [2024-11-17 00:17:46,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:46,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:17:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:17:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:46,719 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:46,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:46,771 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2024-11-17 00:17:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:17:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-17 00:17:46,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:46,772 INFO L225 Difference]: With dead ends: 57 [2024-11-17 00:17:46,773 INFO L226 Difference]: Without dead ends: 57 [2024-11-17 00:17:46,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:17:46,775 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 35 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:46,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 100 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-17 00:17:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-17 00:17:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 56 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2024-11-17 00:17:46,778 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 18 [2024-11-17 00:17:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:46,778 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2024-11-17 00:17:46,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2024-11-17 00:17:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-17 00:17:46,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:46,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:46,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 00:17:46,780 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:46,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1568381161, now seen corresponding path program 1 times [2024-11-17 00:17:46,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:46,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178850704] [2024-11-17 00:17:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:46,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:46,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:46,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178850704] [2024-11-17 00:17:46,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178850704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:46,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:46,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:17:46,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795816693] [2024-11-17 00:17:46,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:46,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:17:46,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:46,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:17:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:17:46,969 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,054 INFO L93 Difference]: Finished difference Result 84 states and 101 transitions. [2024-11-17 00:17:47,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:17:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-17 00:17:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,055 INFO L225 Difference]: With dead ends: 84 [2024-11-17 00:17:47,055 INFO L226 Difference]: Without dead ends: 84 [2024-11-17 00:17:47,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:17:47,056 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 34 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:47,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 174 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-17 00:17:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 60. [2024-11-17 00:17:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 59 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-11-17 00:17:47,060 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 18 [2024-11-17 00:17:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,061 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-11-17 00:17:47,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-11-17 00:17:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-17 00:17:47,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,061 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 00:17:47,062 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1568397020, now seen corresponding path program 1 times [2024-11-17 00:17:47,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268763451] [2024-11-17 00:17:47,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:47,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:47,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268763451] [2024-11-17 00:17:47,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268763451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:47,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:47,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:17:47,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889043896] [2024-11-17 00:17:47,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:47,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:47,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:47,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:47,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:47,109 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,144 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2024-11-17 00:17:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:47,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-17 00:17:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,145 INFO L225 Difference]: With dead ends: 66 [2024-11-17 00:17:47,145 INFO L226 Difference]: Without dead ends: 66 [2024-11-17 00:17:47,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:47,146 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 31 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:47,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 78 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:47,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-17 00:17:47,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2024-11-17 00:17:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 58 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-17 00:17:47,147 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 18 [2024-11-17 00:17:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,148 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-17 00:17:47,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-17 00:17:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-17 00:17:47,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,148 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 00:17:47,149 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1568397021, now seen corresponding path program 1 times [2024-11-17 00:17:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15581727] [2024-11-17 00:17:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:47,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:47,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15581727] [2024-11-17 00:17:47,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15581727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:47,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:47,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:47,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339748644] [2024-11-17 00:17:47,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:47,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:47,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:47,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:47,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:47,209 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,231 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-17 00:17:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:47,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-17 00:17:47,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,232 INFO L225 Difference]: With dead ends: 65 [2024-11-17 00:17:47,232 INFO L226 Difference]: Without dead ends: 65 [2024-11-17 00:17:47,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:47,234 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:47,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 124 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-17 00:17:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2024-11-17 00:17:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 63 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2024-11-17 00:17:47,236 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 18 [2024-11-17 00:17:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,236 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2024-11-17 00:17:47,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2024-11-17 00:17:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-17 00:17:47,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,237 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 00:17:47,238 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1219018466, now seen corresponding path program 1 times [2024-11-17 00:17:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810851419] [2024-11-17 00:17:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:47,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:47,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810851419] [2024-11-17 00:17:47,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810851419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:47,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:47,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:17:47,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016018370] [2024-11-17 00:17:47,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:47,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:17:47,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:47,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:17:47,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:47,308 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,331 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2024-11-17 00:17:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:17:47,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-17 00:17:47,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,332 INFO L225 Difference]: With dead ends: 64 [2024-11-17 00:17:47,332 INFO L226 Difference]: Without dead ends: 64 [2024-11-17 00:17:47,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:47,333 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 131 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 [2024-11-17 00:17:47,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:47,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-17 00:17:47,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2024-11-17 00:17:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 58 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2024-11-17 00:17:47,335 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 18 [2024-11-17 00:17:47,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,335 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2024-11-17 00:17:47,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,336 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2024-11-17 00:17:47,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-17 00:17:47,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,336 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-17 00:17:47,336 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1375175699, now seen corresponding path program 1 times [2024-11-17 00:17:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694595584] [2024-11-17 00:17:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:47,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:47,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:47,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694595584] [2024-11-17 00:17:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694595584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:47,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:47,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847624513] [2024-11-17 00:17:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:47,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:17:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:47,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:17:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:47,396 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,444 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-17 00:17:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:17:47,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-17 00:17:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,445 INFO L225 Difference]: With dead ends: 65 [2024-11-17 00:17:47,445 INFO L226 Difference]: Without dead ends: 65 [2024-11-17 00:17:47,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:17:47,445 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:47,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 101 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-17 00:17:47,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2024-11-17 00:17:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2024-11-17 00:17:47,447 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 19 [2024-11-17 00:17:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,448 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2024-11-17 00:17:47,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2024-11-17 00:17:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-17 00:17:47,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,448 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-17 00:17:47,449 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1375175700, now seen corresponding path program 1 times [2024-11-17 00:17:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613487206] [2024-11-17 00:17:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:47,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:47,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613487206] [2024-11-17 00:17:47,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613487206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:47,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:47,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:17:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925288426] [2024-11-17 00:17:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:47,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:17:47,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:47,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:17:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:17:47,565 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,639 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2024-11-17 00:17:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:17:47,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-17 00:17:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,640 INFO L225 Difference]: With dead ends: 74 [2024-11-17 00:17:47,640 INFO L226 Difference]: Without dead ends: 74 [2024-11-17 00:17:47,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:17:47,641 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 33 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:47,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 150 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-17 00:17:47,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2024-11-17 00:17:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 61 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-11-17 00:17:47,643 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 19 [2024-11-17 00:17:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,643 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-11-17 00:17:47,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,644 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-11-17 00:17:47,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-17 00:17:47,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,644 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-17 00:17:47,644 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1308141328, now seen corresponding path program 1 times [2024-11-17 00:17:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196123106] [2024-11-17 00:17:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:47,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:47,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196123106] [2024-11-17 00:17:47,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196123106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:47,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:47,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:47,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017295285] [2024-11-17 00:17:47,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:47,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:17:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:47,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:17:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:47,707 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,755 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2024-11-17 00:17:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:17:47,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-17 00:17:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,756 INFO L225 Difference]: With dead ends: 61 [2024-11-17 00:17:47,757 INFO L226 Difference]: Without dead ends: 61 [2024-11-17 00:17:47,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:17:47,757 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 28 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:47,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 97 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:47,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-17 00:17:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-17 00:17:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 60 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-17 00:17:47,759 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 21 [2024-11-17 00:17:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,760 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-17 00:17:47,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,760 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-17 00:17:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-17 00:17:47,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,760 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 00:17:47,761 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1308141327, now seen corresponding path program 1 times [2024-11-17 00:17:47,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773247070] [2024-11-17 00:17:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:47,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773247070] [2024-11-17 00:17:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773247070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:47,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:17:47,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355633934] [2024-11-17 00:17:47,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:47,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:47,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:47,819 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,841 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2024-11-17 00:17:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:47,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-17 00:17:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,842 INFO L225 Difference]: With dead ends: 83 [2024-11-17 00:17:47,842 INFO L226 Difference]: Without dead ends: 83 [2024-11-17 00:17:47,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:47,843 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 12 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:47,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 120 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:47,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-17 00:17:47,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-11-17 00:17:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.337837837837838) internal successors, (99), 78 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2024-11-17 00:17:47,845 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 21 [2024-11-17 00:17:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,846 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2024-11-17 00:17:47,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2024-11-17 00:17:47,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-17 00:17:47,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,846 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-17 00:17:47,847 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1989753616, now seen corresponding path program 1 times [2024-11-17 00:17:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40587880] [2024-11-17 00:17:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:47,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:47,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40587880] [2024-11-17 00:17:47,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40587880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:47,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:47,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:17:47,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577817656] [2024-11-17 00:17:47,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:47,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:17:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:17:47,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:47,912 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:47,935 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2024-11-17 00:17:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:17:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-17 00:17:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:47,936 INFO L225 Difference]: With dead ends: 81 [2024-11-17 00:17:47,936 INFO L226 Difference]: Without dead ends: 81 [2024-11-17 00:17:47,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:47,936 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:47,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 113 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-17 00:17:47,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 61. [2024-11-17 00:17:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 60 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2024-11-17 00:17:47,938 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 21 [2024-11-17 00:17:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:47,938 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2024-11-17 00:17:47,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2024-11-17 00:17:47,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-17 00:17:47,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:47,939 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:47,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-17 00:17:47,940 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:47,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:47,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1897703298, now seen corresponding path program 1 times [2024-11-17 00:17:47,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:47,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597606134] [2024-11-17 00:17:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:47,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:48,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:48,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597606134] [2024-11-17 00:17:48,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597606134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:48,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:48,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:17:48,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584051499] [2024-11-17 00:17:48,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:48,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:17:48,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:48,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:17:48,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:17:48,100 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:48,194 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2024-11-17 00:17:48,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:17:48,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-17 00:17:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:48,195 INFO L225 Difference]: With dead ends: 81 [2024-11-17 00:17:48,195 INFO L226 Difference]: Without dead ends: 81 [2024-11-17 00:17:48,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:17:48,196 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:48,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 150 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-17 00:17:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 63. [2024-11-17 00:17:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 62 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-17 00:17:48,201 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 22 [2024-11-17 00:17:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:48,202 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-17 00:17:48,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-17 00:17:48,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-17 00:17:48,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:48,202 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:48,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-17 00:17:48,203 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:48,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1897117440, now seen corresponding path program 1 times [2024-11-17 00:17:48,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:48,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362839042] [2024-11-17 00:17:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:48,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:48,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362839042] [2024-11-17 00:17:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362839042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:48,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:48,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:17:48,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309164900] [2024-11-17 00:17:48,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:48,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:48,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:48,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:48,312 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:48,334 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-11-17 00:17:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:48,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-17 00:17:48,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:48,335 INFO L225 Difference]: With dead ends: 62 [2024-11-17 00:17:48,335 INFO L226 Difference]: Without dead ends: 58 [2024-11-17 00:17:48,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:17:48,335 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 68 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 [2024-11-17 00:17:48,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 68 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-17 00:17:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-17 00:17:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 57 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2024-11-17 00:17:48,339 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 22 [2024-11-17 00:17:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:48,339 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2024-11-17 00:17:48,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2024-11-17 00:17:48,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:17:48,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:48,340 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:48,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-17 00:17:48,340 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:48,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1013059377, now seen corresponding path program 1 times [2024-11-17 00:17:48,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:48,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216611078] [2024-11-17 00:17:48,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:48,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:48,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:48,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216611078] [2024-11-17 00:17:48,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216611078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:48,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:48,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:17:48,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298633510] [2024-11-17 00:17:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:48,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:17:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:17:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:48,418 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:48,446 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2024-11-17 00:17:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:17:48,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-17 00:17:48,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:48,447 INFO L225 Difference]: With dead ends: 65 [2024-11-17 00:17:48,448 INFO L226 Difference]: Without dead ends: 65 [2024-11-17 00:17:48,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:17:48,449 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:48,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-17 00:17:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-17 00:17:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2024-11-17 00:17:48,452 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 23 [2024-11-17 00:17:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:48,452 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2024-11-17 00:17:48,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2024-11-17 00:17:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:17:48,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:48,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:48,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-17 00:17:48,453 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:48,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:48,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1421883602, now seen corresponding path program 1 times [2024-11-17 00:17:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451607298] [2024-11-17 00:17:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:48,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451607298] [2024-11-17 00:17:48,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451607298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:48,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:48,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 00:17:48,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136661175] [2024-11-17 00:17:48,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:48,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:17:48,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:48,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:17:48,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:17:48,556 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:48,613 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2024-11-17 00:17:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:17:48,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-17 00:17:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:48,614 INFO L225 Difference]: With dead ends: 76 [2024-11-17 00:17:48,614 INFO L226 Difference]: Without dead ends: 76 [2024-11-17 00:17:48,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:17:48,615 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:48,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 158 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-17 00:17:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2024-11-17 00:17:48,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 66 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-11-17 00:17:48,618 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 23 [2024-11-17 00:17:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:48,618 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-11-17 00:17:48,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,618 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-11-17 00:17:48,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:17:48,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:48,619 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:48,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-17 00:17:48,619 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:48,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash 175517005, now seen corresponding path program 1 times [2024-11-17 00:17:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:48,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515850408] [2024-11-17 00:17:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:48,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:48,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:48,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515850408] [2024-11-17 00:17:48,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515850408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:48,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:48,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 00:17:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015207583] [2024-11-17 00:17:48,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:48,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:17:48,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:48,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:17:48,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:17:48,765 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:48,812 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2024-11-17 00:17:48,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:17:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-17 00:17:48,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:48,813 INFO L225 Difference]: With dead ends: 97 [2024-11-17 00:17:48,813 INFO L226 Difference]: Without dead ends: 78 [2024-11-17 00:17:48,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:17:48,813 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:48,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 212 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:48,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-17 00:17:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-17 00:17:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 77 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) [2024-11-17 00:17:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2024-11-17 00:17:48,815 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 25 [2024-11-17 00:17:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:48,815 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2024-11-17 00:17:48,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2024-11-17 00:17:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:17:48,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:48,816 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:48,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-17 00:17:48,816 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:48,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1420281486, now seen corresponding path program 1 times [2024-11-17 00:17:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:48,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78293055] [2024-11-17 00:17:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78293055] [2024-11-17 00:17:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78293055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:48,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:17:48,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:17:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054651789] [2024-11-17 00:17:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:48,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:17:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:17:48,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:17:48,975 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:49,031 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2024-11-17 00:17:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:17:49,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-17 00:17:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:49,032 INFO L225 Difference]: With dead ends: 116 [2024-11-17 00:17:49,032 INFO L226 Difference]: Without dead ends: 100 [2024-11-17 00:17:49,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:17:49,033 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:49,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 180 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:49,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-17 00:17:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2024-11-17 00:17:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2024-11-17 00:17:49,035 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 25 [2024-11-17 00:17:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:49,035 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2024-11-17 00:17:49,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:49,035 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2024-11-17 00:17:49,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-17 00:17:49,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:49,036 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:49,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-17 00:17:49,036 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:49,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2058110512, now seen corresponding path program 1 times [2024-11-17 00:17:49,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:49,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382070493] [2024-11-17 00:17:49,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:49,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:49,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:49,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382070493] [2024-11-17 00:17:49,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382070493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:49,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373295745] [2024-11-17 00:17:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:49,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:49,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:49,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:49,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:17:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:49,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 00:17:49,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:49,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:49,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373295745] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:49,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:17:49,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 14 [2024-11-17 00:17:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089842173] [2024-11-17 00:17:49,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:49,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:17:49,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:17:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:17:49,406 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:49,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:49,417 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2024-11-17 00:17:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:17:49,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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 27 [2024-11-17 00:17:49,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:49,418 INFO L225 Difference]: With dead ends: 83 [2024-11-17 00:17:49,418 INFO L226 Difference]: Without dead ends: 82 [2024-11-17 00:17:49,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:17:49,419 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:49,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 93 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-17 00:17:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-17 00:17:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 81 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2024-11-17 00:17:49,421 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 27 [2024-11-17 00:17:49,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:49,422 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2024-11-17 00:17:49,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:49,422 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2024-11-17 00:17:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-17 00:17:49,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:49,422 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:49,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 00:17:49,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:49,626 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:49,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:49,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2058066790, now seen corresponding path program 1 times [2024-11-17 00:17:49,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:49,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126296888] [2024-11-17 00:17:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:49,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:49,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126296888] [2024-11-17 00:17:49,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126296888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:49,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145320402] [2024-11-17 00:17:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:49,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:49,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:49,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:49,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:17:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:49,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-17 00:17:49,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:49,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:17:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:49,952 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:17:49,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145320402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:49,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:17:49,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-17 00:17:49,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629462920] [2024-11-17 00:17:49,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:49,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:17:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:49,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:17:49,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:17:49,954 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:49,993 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2024-11-17 00:17:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:17:49,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-17 00:17:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:49,995 INFO L225 Difference]: With dead ends: 99 [2024-11-17 00:17:49,995 INFO L226 Difference]: Without dead ends: 78 [2024-11-17 00:17:49,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:17:49,996 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:49,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:17:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-17 00:17:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-17 00:17:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2024-11-17 00:17:50,000 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 27 [2024-11-17 00:17:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:50,000 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2024-11-17 00:17:50,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:50,000 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2024-11-17 00:17:50,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-17 00:17:50,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:50,001 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:50,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 00:17:50,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:50,205 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:50,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:50,205 INFO L85 PathProgramCache]: Analyzing trace with hash 159691163, now seen corresponding path program 1 times [2024-11-17 00:17:50,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:50,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616701990] [2024-11-17 00:17:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:50,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:50,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616701990] [2024-11-17 00:17:50,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616701990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:50,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115413932] [2024-11-17 00:17:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:50,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:50,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:50,342 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:50,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:17:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:50,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-17 00:17:50,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:50,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-17 00:17:50,650 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:17:50,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:17:50,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2024-11-17 00:17:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:50,673 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:17:50,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115413932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:17:50,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:17:50,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-17 00:17:50,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461392812] [2024-11-17 00:17:50,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:17:50,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:17:50,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:50,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:17:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:17:50,675 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:50,757 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-11-17 00:17:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:17:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 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 27 [2024-11-17 00:17:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:50,758 INFO L225 Difference]: With dead ends: 85 [2024-11-17 00:17:50,758 INFO L226 Difference]: Without dead ends: 68 [2024-11-17 00:17:50,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:17:50,758 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:50,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 221 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-17 00:17:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2024-11-17 00:17:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 63 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2024-11-17 00:17:50,760 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 27 [2024-11-17 00:17:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:50,760 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2024-11-17 00:17:50,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2024-11-17 00:17:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-17 00:17:50,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:50,760 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:50,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 00:17:50,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:50,961 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:50,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:50,962 INFO L85 PathProgramCache]: Analyzing trace with hash -892101652, now seen corresponding path program 1 times [2024-11-17 00:17:50,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:50,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477154586] [2024-11-17 00:17:50,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:50,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:51,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:51,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477154586] [2024-11-17 00:17:51,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477154586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:51,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035983980] [2024-11-17 00:17:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:51,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:51,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:51,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:17:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:51,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 00:17:51,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:51,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:51,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:17:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:51,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035983980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:17:51,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:17:51,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-17 00:17:51,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594978446] [2024-11-17 00:17:51,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:17:51,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 00:17:51,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:51,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 00:17:51,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-17 00:17:51,635 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:51,825 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2024-11-17 00:17:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 00:17:51,825 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-17 00:17:51,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:51,825 INFO L225 Difference]: With dead ends: 78 [2024-11-17 00:17:51,825 INFO L226 Difference]: Without dead ends: 78 [2024-11-17 00:17:51,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:17:51,826 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:51,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 231 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:51,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-17 00:17:51,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2024-11-17 00:17:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2024-11-17 00:17:51,828 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 29 [2024-11-17 00:17:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:51,829 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2024-11-17 00:17:51,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2024-11-17 00:17:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-17 00:17:51,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:51,830 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:51,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 00:17:52,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:52,032 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:52,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:52,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1730142215, now seen corresponding path program 1 times [2024-11-17 00:17:52,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:52,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372737532] [2024-11-17 00:17:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:52,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372737532] [2024-11-17 00:17:52,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372737532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926971696] [2024-11-17 00:17:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:52,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:52,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:52,343 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:52,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 00:17:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:52,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 00:17:52,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:52,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:52,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:17:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:52,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926971696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:17:52,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:17:52,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-17 00:17:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802114899] [2024-11-17 00:17:52,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:17:52,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 00:17:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:52,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 00:17:52,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-17 00:17:52,736 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 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) [2024-11-17 00:17:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:52,917 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2024-11-17 00:17:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 00:17:52,918 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 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) Word has length 31 [2024-11-17 00:17:52,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:52,918 INFO L225 Difference]: With dead ends: 79 [2024-11-17 00:17:52,918 INFO L226 Difference]: Without dead ends: 79 [2024-11-17 00:17:52,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:17:52,919 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:52,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 230 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:52,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-17 00:17:52,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-11-17 00:17:52,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 73 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-11-17 00:17:52,921 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 31 [2024-11-17 00:17:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:52,921 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-11-17 00:17:52,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 20 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) [2024-11-17 00:17:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-11-17 00:17:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:17:52,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:52,923 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:52,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 00:17:53,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-17 00:17:53,124 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:53,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash 657263391, now seen corresponding path program 2 times [2024-11-17 00:17:53,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:53,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613077558] [2024-11-17 00:17:53,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:53,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:53,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613077558] [2024-11-17 00:17:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613077558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:53,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67754511] [2024-11-17 00:17:53,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:17:53,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:53,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:53,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:53,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 00:17:53,533 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:17:53,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:17:53,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-17 00:17:53,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:53,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:17:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:53,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:53,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:17:53,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:17:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:53,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67754511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:17:53,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:17:53,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2024-11-17 00:17:53,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283258744] [2024-11-17 00:17:53,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:17:53,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 00:17:53,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 00:17:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:17:53,783 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 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) [2024-11-17 00:17:53,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:53,940 INFO L93 Difference]: Finished difference Result 128 states and 142 transitions. [2024-11-17 00:17:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:17:53,940 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 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) Word has length 32 [2024-11-17 00:17:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:53,941 INFO L225 Difference]: With dead ends: 128 [2024-11-17 00:17:53,941 INFO L226 Difference]: Without dead ends: 109 [2024-11-17 00:17:53,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2024-11-17 00:17:53,943 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:53,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 507 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:17:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-17 00:17:53,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2024-11-17 00:17:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.16) internal successors, (116), 103 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) [2024-11-17 00:17:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 116 transitions. [2024-11-17 00:17:53,945 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 116 transitions. Word has length 32 [2024-11-17 00:17:53,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:53,945 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 116 transitions. [2024-11-17 00:17:53,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 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) [2024-11-17 00:17:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 116 transitions. [2024-11-17 00:17:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:17:53,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:53,946 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:53,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 00:17:54,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-17 00:17:54,147 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:54,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2094801148, now seen corresponding path program 1 times [2024-11-17 00:17:54,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:54,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288041548] [2024-11-17 00:17:54,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:54,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288041548] [2024-11-17 00:17:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288041548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096079086] [2024-11-17 00:17:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:54,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:54,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:54,392 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:54,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 00:17:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:54,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 00:17:54,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:54,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:54,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:17:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:54,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096079086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:17:54,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:17:54,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-17 00:17:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886917404] [2024-11-17 00:17:54,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:17:54,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 00:17:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 00:17:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:17:54,771 INFO L87 Difference]: Start difference. First operand 104 states and 116 transitions. Second operand has 21 states, 20 states have (on average 3.3) internal successors, (66), 21 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) [2024-11-17 00:17:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:54,987 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2024-11-17 00:17:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:17:54,987 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.3) internal successors, (66), 21 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) Word has length 32 [2024-11-17 00:17:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:54,988 INFO L225 Difference]: With dead ends: 112 [2024-11-17 00:17:54,988 INFO L226 Difference]: Without dead ends: 109 [2024-11-17 00:17:54,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:17:54,989 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 32 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:54,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 382 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:17:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-17 00:17:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2024-11-17 00:17:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.1428571428571428) internal successors, (112), 101 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) [2024-11-17 00:17:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2024-11-17 00:17:54,991 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 32 [2024-11-17 00:17:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:54,992 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2024-11-17 00:17:54,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.3) internal successors, (66), 21 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) [2024-11-17 00:17:54,992 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2024-11-17 00:17:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-17 00:17:54,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:54,993 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:55,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 00:17:55,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-17 00:17:55,197 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:55,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:55,197 INFO L85 PathProgramCache]: Analyzing trace with hash -106557439, now seen corresponding path program 3 times [2024-11-17 00:17:55,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:55,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834144141] [2024-11-17 00:17:55,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:55,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:55,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834144141] [2024-11-17 00:17:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834144141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005465700] [2024-11-17 00:17:55,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:17:55,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:55,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:55,555 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:55,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 00:17:55,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 00:17:55,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:17:55,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-17 00:17:55,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:55,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:56,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-17 00:17:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:56,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005465700] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:17:56,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:17:56,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2024-11-17 00:17:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750665279] [2024-11-17 00:17:56,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:17:56,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 00:17:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 00:17:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:17:56,128 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:56,431 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2024-11-17 00:17:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:17:56,431 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-17 00:17:56,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:56,432 INFO L225 Difference]: With dead ends: 114 [2024-11-17 00:17:56,432 INFO L226 Difference]: Without dead ends: 114 [2024-11-17 00:17:56,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2024-11-17 00:17:56,433 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 50 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:56,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 446 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:17:56,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-17 00:17:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2024-11-17 00:17:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 1.146788990825688) internal successors, (125), 112 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:56,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2024-11-17 00:17:56,436 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 36 [2024-11-17 00:17:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:56,436 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2024-11-17 00:17:56,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2024-11-17 00:17:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-17 00:17:56,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:56,437 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:56,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 00:17:56,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-17 00:17:56,641 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:56,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:56,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2143027575, now seen corresponding path program 2 times [2024-11-17 00:17:56,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:56,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190688419] [2024-11-17 00:17:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:56,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:17:56,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:56,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190688419] [2024-11-17 00:17:56,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190688419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:56,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254126379] [2024-11-17 00:17:56,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:17:56,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:56,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:56,789 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:56,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 00:17:56,910 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:17:56,910 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:17:56,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-17 00:17:56,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:56,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:17:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:57,037 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:17:57,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:17:57,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:17:57,123 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:17:57,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254126379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:17:57,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:17:57,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 20 [2024-11-17 00:17:57,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55335906] [2024-11-17 00:17:57,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:17:57,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 00:17:57,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:17:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 00:17:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2024-11-17 00:17:57,125 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:17:57,432 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2024-11-17 00:17:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 00:17:57,432 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-17 00:17:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:17:57,433 INFO L225 Difference]: With dead ends: 155 [2024-11-17 00:17:57,433 INFO L226 Difference]: Without dead ends: 114 [2024-11-17 00:17:57,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2024-11-17 00:17:57,434 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:17:57,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 462 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:17:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-17 00:17:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2024-11-17 00:17:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 107 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2024-11-17 00:17:57,436 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 36 [2024-11-17 00:17:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:17:57,436 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2024-11-17 00:17:57,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:17:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2024-11-17 00:17:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 00:17:57,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:17:57,440 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:17:57,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-17 00:17:57,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-17 00:17:57,641 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:17:57,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:17:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -471883030, now seen corresponding path program 4 times [2024-11-17 00:17:57,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:17:57,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302378632] [2024-11-17 00:17:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:17:57,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:17:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:17:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:17:57,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:17:57,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302378632] [2024-11-17 00:17:57,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302378632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:17:57,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788391610] [2024-11-17 00:17:57,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 00:17:57,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:17:57,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:17:57,984 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:17:57,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 00:17:58,092 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 00:17:58,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:17:58,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-17 00:17:58,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:17:58,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-17 00:17:59,249 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-11-17 00:17:59,250 INFO L378 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 40 treesize of output 39 [2024-11-17 00:17:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 8 refuted. 1 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:17:59,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:00,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-17 00:18:00,179 INFO L378 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 [2024-11-17 00:18:00,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:18:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:00,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788391610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:00,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:00,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 39 [2024-11-17 00:18:00,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001296913] [2024-11-17 00:18:00,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:00,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-17 00:18:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:00,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-17 00:18:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1326, Unknown=1, NotChecked=0, Total=1482 [2024-11-17 00:18:00,224 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:02,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:02,407 INFO L93 Difference]: Finished difference Result 203 states and 220 transitions. [2024-11-17 00:18:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-17 00:18:02,407 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 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) Word has length 39 [2024-11-17 00:18:02,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:02,408 INFO L225 Difference]: With dead ends: 203 [2024-11-17 00:18:02,408 INFO L226 Difference]: Without dead ends: 119 [2024-11-17 00:18:02,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=347, Invalid=2839, Unknown=6, NotChecked=0, Total=3192 [2024-11-17 00:18:02,409 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 136 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:02,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 652 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:18:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-17 00:18:02,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2024-11-17 00:18:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.125) internal successors, (126), 115 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2024-11-17 00:18:02,413 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 39 [2024-11-17 00:18:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:02,413 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2024-11-17 00:18:02,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2024-11-17 00:18:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-17 00:18:02,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:02,414 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:02,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:02,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-17 00:18:02,614 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:02,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -442805239, now seen corresponding path program 3 times [2024-11-17 00:18:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:02,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069136281] [2024-11-17 00:18:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:02,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:02,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:02,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069136281] [2024-11-17 00:18:02,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069136281] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:02,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521412260] [2024-11-17 00:18:02,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:18:02,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:02,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:02,918 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:02,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 00:18:03,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 00:18:03,035 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:03,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-17 00:18:03,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:03,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:03,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-17 00:18:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:03,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521412260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:03,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:03,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-11-17 00:18:03,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702340963] [2024-11-17 00:18:03,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:03,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-17 00:18:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:03,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-17 00:18:03,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-11-17 00:18:03,426 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 26 states, 25 states have (on average 3.6) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:03,659 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2024-11-17 00:18:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:18:03,659 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.6) internal successors, (90), 26 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) Word has length 44 [2024-11-17 00:18:03,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:03,660 INFO L225 Difference]: With dead ends: 118 [2024-11-17 00:18:03,660 INFO L226 Difference]: Without dead ends: 118 [2024-11-17 00:18:03,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2024-11-17 00:18:03,661 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:03,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 413 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:18:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-17 00:18:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-11-17 00:18:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2024-11-17 00:18:03,663 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 44 [2024-11-17 00:18:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:03,664 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2024-11-17 00:18:03,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.6) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2024-11-17 00:18:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-17 00:18:03,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:03,664 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:03,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 00:18:03,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:03,865 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:03,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:03,866 INFO L85 PathProgramCache]: Analyzing trace with hash -842060556, now seen corresponding path program 2 times [2024-11-17 00:18:03,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:03,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430545235] [2024-11-17 00:18:03,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:04,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:04,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430545235] [2024-11-17 00:18:04,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430545235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:04,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248644316] [2024-11-17 00:18:04,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:18:04,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:04,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:04,158 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:04,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 00:18:04,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:18:04,331 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:04,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-17 00:18:04,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:04,509 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:04,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:04,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-17 00:18:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:04,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248644316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:04,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:04,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2024-11-17 00:18:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001028288] [2024-11-17 00:18:04,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:04,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-17 00:18:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:04,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-17 00:18:04,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2024-11-17 00:18:04,772 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 27 states, 26 states have (on average 3.923076923076923) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:04,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:04,992 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2024-11-17 00:18:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:18:04,992 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.923076923076923) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 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 45 [2024-11-17 00:18:04,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:04,993 INFO L225 Difference]: With dead ends: 121 [2024-11-17 00:18:04,993 INFO L226 Difference]: Without dead ends: 118 [2024-11-17 00:18:04,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2024-11-17 00:18:04,994 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:04,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 501 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:18:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-17 00:18:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 115. [2024-11-17 00:18:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.1081081081081081) internal successors, (123), 114 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2024-11-17 00:18:04,997 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 45 [2024-11-17 00:18:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:04,997 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 123 transitions. [2024-11-17 00:18:04,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.923076923076923) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 123 transitions. [2024-11-17 00:18:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 00:18:05,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:05,001 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:05,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:05,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:05,204 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:05,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:05,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1221831146, now seen corresponding path program 1 times [2024-11-17 00:18:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:05,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311156007] [2024-11-17 00:18:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:05,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:05,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311156007] [2024-11-17 00:18:05,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311156007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:05,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766200774] [2024-11-17 00:18:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:05,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:05,612 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:05,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 00:18:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:05,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-17 00:18:05,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:05,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:06,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:18:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:06,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766200774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:06,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:06,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2024-11-17 00:18:06,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646772051] [2024-11-17 00:18:06,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:06,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-17 00:18:06,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-17 00:18:06,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2024-11-17 00:18:06,207 INFO L87 Difference]: Start difference. First operand 115 states and 123 transitions. Second operand has 27 states, 26 states have (on average 3.769230769230769) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:06,463 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2024-11-17 00:18:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 00:18:06,464 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.769230769230769) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-17 00:18:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:06,464 INFO L225 Difference]: With dead ends: 127 [2024-11-17 00:18:06,464 INFO L226 Difference]: Without dead ends: 127 [2024-11-17 00:18:06,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2024-11-17 00:18:06,466 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 46 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:06,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 464 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:18:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-17 00:18:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2024-11-17 00:18:06,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.1147540983606556) internal successors, (136), 125 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2024-11-17 00:18:06,469 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 49 [2024-11-17 00:18:06,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:06,469 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2024-11-17 00:18:06,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.769230769230769) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2024-11-17 00:18:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 00:18:06,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:06,470 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:06,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:06,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:06,676 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:06,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -944319367, now seen corresponding path program 4 times [2024-11-17 00:18:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:06,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640690001] [2024-11-17 00:18:06,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:06,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-17 00:18:06,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640690001] [2024-11-17 00:18:06,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640690001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:06,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96449] [2024-11-17 00:18:06,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 00:18:06,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:06,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:06,906 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:06,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 00:18:07,164 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 00:18:07,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:07,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-17 00:18:07,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:07,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:07,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:07,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:07,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:18:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:07,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:07,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 24 [2024-11-17 00:18:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055148694] [2024-11-17 00:18:07,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:07,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 00:18:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 00:18:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:18:07,452 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:07,944 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2024-11-17 00:18:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-17 00:18:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-17 00:18:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:07,945 INFO L225 Difference]: With dead ends: 176 [2024-11-17 00:18:07,945 INFO L226 Difference]: Without dead ends: 121 [2024-11-17 00:18:07,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2024-11-17 00:18:07,946 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:07,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 615 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:18:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-17 00:18:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2024-11-17 00:18:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 116 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2024-11-17 00:18:07,948 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 49 [2024-11-17 00:18:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:07,949 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2024-11-17 00:18:07,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 24 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2024-11-17 00:18:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-17 00:18:07,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:07,950 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:07,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-17 00:18:08,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:08,150 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:08,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -276212639, now seen corresponding path program 2 times [2024-11-17 00:18:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830130853] [2024-11-17 00:18:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:08,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:08,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830130853] [2024-11-17 00:18:08,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830130853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:08,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334773883] [2024-11-17 00:18:08,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:18:08,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:08,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:08,566 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:08,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 00:18:08,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:18:08,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:08,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-17 00:18:08,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:08,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:09,210 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:18:09,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:18:09,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2024-11-17 00:18:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:09,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:09,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:09,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-17 00:18:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:09,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334773883] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:09,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:09,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 38 [2024-11-17 00:18:09,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235821153] [2024-11-17 00:18:09,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:09,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-17 00:18:09,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-17 00:18:09,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2024-11-17 00:18:09,757 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:10,150 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions. [2024-11-17 00:18:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 00:18:10,151 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-17 00:18:10,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:10,152 INFO L225 Difference]: With dead ends: 208 [2024-11-17 00:18:10,152 INFO L226 Difference]: Without dead ends: 164 [2024-11-17 00:18:10,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=1573, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 00:18:10,153 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 24 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:10,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 941 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:18:10,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-17 00:18:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2024-11-17 00:18:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 157 states have (on average 1.1019108280254777) internal successors, (173), 160 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 173 transitions. [2024-11-17 00:18:10,156 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 173 transitions. Word has length 52 [2024-11-17 00:18:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:10,157 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 173 transitions. [2024-11-17 00:18:10,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.263157894736842) internal successors, (124), 38 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 173 transitions. [2024-11-17 00:18:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-17 00:18:10,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:10,158 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:10,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-17 00:18:10,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:10,362 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:10,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash -602788925, now seen corresponding path program 3 times [2024-11-17 00:18:10,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:10,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573687986] [2024-11-17 00:18:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:10,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:10,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:10,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573687986] [2024-11-17 00:18:10,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573687986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:10,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970367735] [2024-11-17 00:18:10,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:18:10,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:10,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:10,863 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:10,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-17 00:18:11,002 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-17 00:18:11,002 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:11,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-17 00:18:11,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:11,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-17 00:18:11,762 INFO L349 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2024-11-17 00:18:11,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2024-11-17 00:18:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 00:18:11,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:12,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-17 00:18:12,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:18:12,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 47 [2024-11-17 00:18:12,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-17 00:18:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 00:18:12,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970367735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:12,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:12,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 43 [2024-11-17 00:18:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241188450] [2024-11-17 00:18:12,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:12,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-17 00:18:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-17 00:18:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1679, Unknown=0, NotChecked=0, Total=1892 [2024-11-17 00:18:12,920 INFO L87 Difference]: Start difference. First operand 161 states and 173 transitions. Second operand has 44 states, 43 states have (on average 3.255813953488372) internal successors, (140), 44 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:15,101 INFO L93 Difference]: Finished difference Result 186 states and 198 transitions. [2024-11-17 00:18:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-17 00:18:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 3.255813953488372) internal successors, (140), 44 states have internal predecessors, (140), 0 states have call successors, (0), 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 56 [2024-11-17 00:18:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:15,103 INFO L225 Difference]: With dead ends: 186 [2024-11-17 00:18:15,103 INFO L226 Difference]: Without dead ends: 186 [2024-11-17 00:18:15,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=496, Invalid=3793, Unknown=1, NotChecked=0, Total=4290 [2024-11-17 00:18:15,104 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 155 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:15,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 757 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:18:15,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-17 00:18:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 175. [2024-11-17 00:18:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 171 states have (on average 1.1169590643274854) internal successors, (191), 174 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 191 transitions. [2024-11-17 00:18:15,108 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 191 transitions. Word has length 56 [2024-11-17 00:18:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:15,108 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 191 transitions. [2024-11-17 00:18:15,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 3.255813953488372) internal successors, (140), 44 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 191 transitions. [2024-11-17 00:18:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-17 00:18:15,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:15,112 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:15,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:15,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:15,313 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:15,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1458434297, now seen corresponding path program 5 times [2024-11-17 00:18:15,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:15,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017665265] [2024-11-17 00:18:15,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:15,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017665265] [2024-11-17 00:18:15,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017665265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945326762] [2024-11-17 00:18:15,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 00:18:15,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:15,756 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:15,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-17 00:18:16,043 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-17 00:18:16,044 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:16,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-17 00:18:16,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:16,054 INFO L378 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 1 [2024-11-17 00:18:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:16,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:16,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945326762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:16,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:16,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2024-11-17 00:18:16,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851963555] [2024-11-17 00:18:16,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:16,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-17 00:18:16,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:16,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-17 00:18:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2024-11-17 00:18:16,658 INFO L87 Difference]: Start difference. First operand 175 states and 191 transitions. Second operand has 29 states, 28 states have (on average 4.321428571428571) internal successors, (121), 29 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:16,904 INFO L93 Difference]: Finished difference Result 178 states and 192 transitions. [2024-11-17 00:18:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 00:18:16,905 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.321428571428571) internal successors, (121), 29 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-17 00:18:16,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:16,905 INFO L225 Difference]: With dead ends: 178 [2024-11-17 00:18:16,905 INFO L226 Difference]: Without dead ends: 178 [2024-11-17 00:18:16,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2024-11-17 00:18:16,906 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 40 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:16,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 354 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:18:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-17 00:18:16,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2024-11-17 00:18:16,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 172 states have (on average 1.1104651162790697) internal successors, (191), 175 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 191 transitions. [2024-11-17 00:18:16,910 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 191 transitions. Word has length 57 [2024-11-17 00:18:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:16,911 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 191 transitions. [2024-11-17 00:18:16,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.321428571428571) internal successors, (121), 29 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:16,911 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 191 transitions. [2024-11-17 00:18:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-17 00:18:16,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:16,911 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:16,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:17,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-17 00:18:17,112 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:17,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2033177084, now seen corresponding path program 3 times [2024-11-17 00:18:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:17,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616854891] [2024-11-17 00:18:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:17,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:17,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:17,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616854891] [2024-11-17 00:18:17,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616854891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:17,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585904871] [2024-11-17 00:18:17,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:18:17,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:17,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:17,446 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:17,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-17 00:18:17,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-17 00:18:17,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:17,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-17 00:18:17,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:17,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:17,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-17 00:18:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:18,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585904871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:18,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-17 00:18:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952890533] [2024-11-17 00:18:18,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:18,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-17 00:18:18,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:18,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-17 00:18:18,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2024-11-17 00:18:18,038 INFO L87 Difference]: Start difference. First operand 176 states and 191 transitions. Second operand has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 32 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:18,334 INFO L93 Difference]: Finished difference Result 183 states and 195 transitions. [2024-11-17 00:18:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 00:18:18,335 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 32 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-17 00:18:18,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:18,335 INFO L225 Difference]: With dead ends: 183 [2024-11-17 00:18:18,335 INFO L226 Difference]: Without dead ends: 180 [2024-11-17 00:18:18,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 93 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2024-11-17 00:18:18,336 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 29 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:18,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 610 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:18:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-17 00:18:18,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2024-11-17 00:18:18,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 170 states have (on average 1.0941176470588236) internal successors, (186), 173 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2024-11-17 00:18:18,353 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 58 [2024-11-17 00:18:18,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:18,354 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2024-11-17 00:18:18,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.774193548387097) internal successors, (117), 32 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2024-11-17 00:18:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-17 00:18:18,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:18,356 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:18,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:18,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-17 00:18:18,561 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:18,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1510769245, now seen corresponding path program 4 times [2024-11-17 00:18:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:18,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558850892] [2024-11-17 00:18:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:18,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:19,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:19,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558850892] [2024-11-17 00:18:19,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558850892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:19,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940317934] [2024-11-17 00:18:19,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 00:18:19,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:19,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:19,378 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:19,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-17 00:18:19,515 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 00:18:19,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:19,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-17 00:18:19,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:19,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:18:19,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:19,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:19,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:18:20,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940317934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:20,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:20,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 37 [2024-11-17 00:18:20,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932933236] [2024-11-17 00:18:20,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:20,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-17 00:18:20,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-17 00:18:20,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1248, Unknown=0, NotChecked=0, Total=1332 [2024-11-17 00:18:20,013 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand has 37 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:21,550 INFO L93 Difference]: Finished difference Result 309 states and 330 transitions. [2024-11-17 00:18:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-17 00:18:21,550 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-17 00:18:21,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:21,551 INFO L225 Difference]: With dead ends: 309 [2024-11-17 00:18:21,551 INFO L226 Difference]: Without dead ends: 253 [2024-11-17 00:18:21,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=196, Invalid=2774, Unknown=0, NotChecked=0, Total=2970 [2024-11-17 00:18:21,552 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 84 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:21,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1956 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2442 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-17 00:18:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-17 00:18:21,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 242. [2024-11-17 00:18:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 238 states have (on average 1.1134453781512605) internal successors, (265), 241 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:21,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 265 transitions. [2024-11-17 00:18:21,557 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 265 transitions. Word has length 62 [2024-11-17 00:18:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:21,557 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 265 transitions. [2024-11-17 00:18:21,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.2972972972972974) internal successors, (122), 37 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:21,558 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 265 transitions. [2024-11-17 00:18:21,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-17 00:18:21,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:21,559 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:21,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-17 00:18:21,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-17 00:18:21,759 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:21,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:21,760 INFO L85 PathProgramCache]: Analyzing trace with hash 657509769, now seen corresponding path program 6 times [2024-11-17 00:18:21,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:21,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018918855] [2024-11-17 00:18:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:21,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 20 proven. 39 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-17 00:18:21,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:21,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018918855] [2024-11-17 00:18:21,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018918855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:21,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178883262] [2024-11-17 00:18:21,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 00:18:21,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:21,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:21,967 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:21,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-17 00:18:22,172 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-17 00:18:22,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:22,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-17 00:18:22,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:22,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:22,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:18:22,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-11-17 00:18:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:18:22,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:23,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:23,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:23,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-17 00:18:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:23,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178883262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:23,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:23,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 14] total 42 [2024-11-17 00:18:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714646450] [2024-11-17 00:18:23,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:23,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-17 00:18:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-17 00:18:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1585, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 00:18:23,439 INFO L87 Difference]: Start difference. First operand 242 states and 265 transitions. Second operand has 42 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 42 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:24,752 INFO L93 Difference]: Finished difference Result 333 states and 355 transitions. [2024-11-17 00:18:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-17 00:18:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 42 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-17 00:18:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:24,753 INFO L225 Difference]: With dead ends: 333 [2024-11-17 00:18:24,753 INFO L226 Difference]: Without dead ends: 287 [2024-11-17 00:18:24,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=392, Invalid=3768, Unknown=0, NotChecked=0, Total=4160 [2024-11-17 00:18:24,755 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 63 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:24,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 947 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-17 00:18:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-17 00:18:24,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 277. [2024-11-17 00:18:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 273 states have (on average 1.098901098901099) internal successors, (300), 276 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:24,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 300 transitions. [2024-11-17 00:18:24,760 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 300 transitions. Word has length 62 [2024-11-17 00:18:24,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:24,760 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 300 transitions. [2024-11-17 00:18:24,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 42 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 300 transitions. [2024-11-17 00:18:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-17 00:18:24,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:24,761 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:24,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:24,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:24,962 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:24,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1708653947, now seen corresponding path program 5 times [2024-11-17 00:18:24,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:24,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690758867] [2024-11-17 00:18:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 82 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690758867] [2024-11-17 00:18:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690758867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401518143] [2024-11-17 00:18:25,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 00:18:25,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:25,524 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:25,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-17 00:18:25,693 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-17 00:18:25,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:25,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-17 00:18:25,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:25,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:25,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-17 00:18:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 82 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:25,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:25,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:25,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 82 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:26,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401518143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:26,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:26,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 33 [2024-11-17 00:18:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772473092] [2024-11-17 00:18:26,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:26,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-17 00:18:26,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-17 00:18:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2024-11-17 00:18:26,098 INFO L87 Difference]: Start difference. First operand 277 states and 300 transitions. Second operand has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:26,540 INFO L93 Difference]: Finished difference Result 426 states and 459 transitions. [2024-11-17 00:18:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-17 00:18:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 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 66 [2024-11-17 00:18:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:26,542 INFO L225 Difference]: With dead ends: 426 [2024-11-17 00:18:26,542 INFO L226 Difference]: Without dead ends: 376 [2024-11-17 00:18:26,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=1287, Unknown=0, NotChecked=0, Total=1406 [2024-11-17 00:18:26,543 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 48 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:26,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1552 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:18:26,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-17 00:18:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 371. [2024-11-17 00:18:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 367 states have (on average 1.098092643051771) internal successors, (403), 370 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 403 transitions. [2024-11-17 00:18:26,550 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 403 transitions. Word has length 66 [2024-11-17 00:18:26,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:26,550 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 403 transitions. [2024-11-17 00:18:26,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:26,550 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 403 transitions. [2024-11-17 00:18:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-17 00:18:26,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:26,551 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:26,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:26,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:26,754 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:26,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 535554454, now seen corresponding path program 4 times [2024-11-17 00:18:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:26,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19911998] [2024-11-17 00:18:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:27,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19911998] [2024-11-17 00:18:27,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19911998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:27,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709869448] [2024-11-17 00:18:27,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 00:18:27,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:27,137 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:27,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-17 00:18:27,483 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 00:18:27,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:27,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-17 00:18:27,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:27,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:18:27,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:27,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:27,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:18:27,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709869448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:27,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:27,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2024-11-17 00:18:27,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434899419] [2024-11-17 00:18:27,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:27,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 00:18:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:27,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 00:18:27,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2024-11-17 00:18:27,841 INFO L87 Difference]: Start difference. First operand 371 states and 403 transitions. Second operand has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:28,665 INFO L93 Difference]: Finished difference Result 376 states and 399 transitions. [2024-11-17 00:18:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-17 00:18:28,665 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-17 00:18:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:28,666 INFO L225 Difference]: With dead ends: 376 [2024-11-17 00:18:28,666 INFO L226 Difference]: Without dead ends: 329 [2024-11-17 00:18:28,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=2932, Unknown=0, NotChecked=0, Total=3192 [2024-11-17 00:18:28,667 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:28,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1173 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 00:18:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-17 00:18:28,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 317. [2024-11-17 00:18:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 313 states have (on average 1.0830670926517572) internal successors, (339), 316 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 339 transitions. [2024-11-17 00:18:28,673 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 339 transitions. Word has length 67 [2024-11-17 00:18:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:28,673 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 339 transitions. [2024-11-17 00:18:28,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.6451612903225805) internal successors, (113), 31 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 339 transitions. [2024-11-17 00:18:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-17 00:18:28,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:28,675 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:28,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:28,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-17 00:18:28,876 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:28,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1528084889, now seen corresponding path program 6 times [2024-11-17 00:18:28,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:28,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28322600] [2024-11-17 00:18:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:28,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 32 proven. 82 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:29,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28322600] [2024-11-17 00:18:29,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28322600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707221728] [2024-11-17 00:18:29,324 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 00:18:29,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:29,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:29,325 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:29,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-17 00:18:29,584 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-17 00:18:29,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:29,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-17 00:18:29,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 50 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:29,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:30,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-17 00:18:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 50 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707221728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:30,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:30,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 45 [2024-11-17 00:18:30,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612819737] [2024-11-17 00:18:30,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:30,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-17 00:18:30,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:30,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-17 00:18:30,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=1797, Unknown=0, NotChecked=0, Total=2070 [2024-11-17 00:18:30,382 INFO L87 Difference]: Start difference. First operand 317 states and 339 transitions. Second operand has 46 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:30,987 INFO L93 Difference]: Finished difference Result 349 states and 373 transitions. [2024-11-17 00:18:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-17 00:18:30,988 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 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 70 [2024-11-17 00:18:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:30,989 INFO L225 Difference]: With dead ends: 349 [2024-11-17 00:18:30,989 INFO L226 Difference]: Without dead ends: 349 [2024-11-17 00:18:30,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 105 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=353, Invalid=2299, Unknown=0, NotChecked=0, Total=2652 [2024-11-17 00:18:30,989 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 169 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:30,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1121 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 00:18:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-17 00:18:30,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 334. [2024-11-17 00:18:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 1.096969696969697) internal successors, (362), 333 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 362 transitions. [2024-11-17 00:18:30,994 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 362 transitions. Word has length 70 [2024-11-17 00:18:30,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:30,995 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 362 transitions. [2024-11-17 00:18:30,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 46 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:30,995 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 362 transitions. [2024-11-17 00:18:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-17 00:18:30,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:30,996 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:31,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-17 00:18:31,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-17 00:18:31,197 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:31,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash -818607420, now seen corresponding path program 7 times [2024-11-17 00:18:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605889731] [2024-11-17 00:18:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 12 proven. 119 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:31,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605889731] [2024-11-17 00:18:31,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605889731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:31,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895837387] [2024-11-17 00:18:31,825 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-17 00:18:31,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:31,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:31,826 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:31,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-17 00:18:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:31,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-17 00:18:31,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:32,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 12 proven. 119 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:32,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:32,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:32,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 12 proven. 119 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895837387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:32,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:32,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 35 [2024-11-17 00:18:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715797852] [2024-11-17 00:18:32,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:32,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-17 00:18:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-17 00:18:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1097, Unknown=0, NotChecked=0, Total=1190 [2024-11-17 00:18:32,383 INFO L87 Difference]: Start difference. First operand 334 states and 362 transitions. Second operand has 35 states, 35 states have (on average 3.3714285714285714) internal successors, (118), 35 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:32,957 INFO L93 Difference]: Finished difference Result 487 states and 525 transitions. [2024-11-17 00:18:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-17 00:18:32,958 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.3714285714285714) internal successors, (118), 35 states have internal predecessors, (118), 0 states have call successors, (0), 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 73 [2024-11-17 00:18:32,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:32,959 INFO L225 Difference]: With dead ends: 487 [2024-11-17 00:18:32,960 INFO L226 Difference]: Without dead ends: 406 [2024-11-17 00:18:32,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2024-11-17 00:18:32,960 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 54 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:32,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1836 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 00:18:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-17 00:18:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 397. [2024-11-17 00:18:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 393 states have (on average 1.0966921119592876) internal successors, (431), 396 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 431 transitions. [2024-11-17 00:18:32,966 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 431 transitions. Word has length 73 [2024-11-17 00:18:32,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:32,966 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 431 transitions. [2024-11-17 00:18:32,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.3714285714285714) internal successors, (118), 35 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:32,966 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 431 transitions. [2024-11-17 00:18:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-17 00:18:32,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:32,967 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:32,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:33,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:33,168 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:33,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash 137070570, now seen corresponding path program 8 times [2024-11-17 00:18:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322131222] [2024-11-17 00:18:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:33,740 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:33,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:33,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322131222] [2024-11-17 00:18:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322131222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:33,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707250648] [2024-11-17 00:18:33,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:18:33,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:33,742 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:33,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-17 00:18:33,900 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:18:33,900 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:33,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-17 00:18:33,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:34,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:34,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:18:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 00:18:34,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707250648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:34,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:34,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2024-11-17 00:18:34,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394281084] [2024-11-17 00:18:34,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:34,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-17 00:18:34,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-17 00:18:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2024-11-17 00:18:34,506 INFO L87 Difference]: Start difference. First operand 397 states and 431 transitions. Second operand has 35 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:35,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:35,029 INFO L93 Difference]: Finished difference Result 401 states and 433 transitions. [2024-11-17 00:18:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 00:18:35,029 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-17 00:18:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:35,030 INFO L225 Difference]: With dead ends: 401 [2024-11-17 00:18:35,030 INFO L226 Difference]: Without dead ends: 365 [2024-11-17 00:18:35,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 125 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1453, Unknown=0, NotChecked=0, Total=1640 [2024-11-17 00:18:35,031 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 72 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:35,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 932 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:18:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-17 00:18:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 355. [2024-11-17 00:18:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 351 states have (on average 1.0940170940170941) internal successors, (384), 354 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 384 transitions. [2024-11-17 00:18:35,036 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 384 transitions. Word has length 75 [2024-11-17 00:18:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:35,036 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 384 transitions. [2024-11-17 00:18:35,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 384 transitions. [2024-11-17 00:18:35,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-17 00:18:35,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:35,037 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:35,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-17 00:18:35,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:35,238 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:35,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash 460736889, now seen corresponding path program 7 times [2024-11-17 00:18:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:35,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879205552] [2024-11-17 00:18:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-17 00:18:35,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879205552] [2024-11-17 00:18:35,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879205552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619059436] [2024-11-17 00:18:35,533 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-17 00:18:35,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:35,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:35,534 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:35,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-17 00:18:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:35,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-17 00:18:35,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:35,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:18:36,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:36,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:36,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 00:18:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619059436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:36,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:36,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 32 [2024-11-17 00:18:36,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642322464] [2024-11-17 00:18:36,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:36,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-17 00:18:36,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-17 00:18:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2024-11-17 00:18:36,169 INFO L87 Difference]: Start difference. First operand 355 states and 384 transitions. Second operand has 32 states, 32 states have (on average 3.8125) internal successors, (122), 32 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:37,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:37,040 INFO L93 Difference]: Finished difference Result 483 states and 509 transitions. [2024-11-17 00:18:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-17 00:18:37,040 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.8125) internal successors, (122), 32 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-17 00:18:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:37,041 INFO L225 Difference]: With dead ends: 483 [2024-11-17 00:18:37,042 INFO L226 Difference]: Without dead ends: 344 [2024-11-17 00:18:37,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=2684, Unknown=0, NotChecked=0, Total=2862 [2024-11-17 00:18:37,042 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 17 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:37,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1223 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:18:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-17 00:18:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 338. [2024-11-17 00:18:37,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 334 states have (on average 1.0868263473053892) internal successors, (363), 337 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 363 transitions. [2024-11-17 00:18:37,047 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 363 transitions. Word has length 75 [2024-11-17 00:18:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:37,047 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 363 transitions. [2024-11-17 00:18:37,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.8125) internal successors, (122), 32 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 363 transitions. [2024-11-17 00:18:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-17 00:18:37,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:37,048 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:37,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:37,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:37,249 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:37,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1452934306, now seen corresponding path program 9 times [2024-11-17 00:18:37,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864361419] [2024-11-17 00:18:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 50 proven. 107 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:37,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:37,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864361419] [2024-11-17 00:18:37,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864361419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:37,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367696528] [2024-11-17 00:18:37,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:18:37,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:37,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:37,866 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:37,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-17 00:18:38,060 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-17 00:18:38,060 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:38,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-17 00:18:38,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:38,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-17 00:18:39,103 INFO L349 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2024-11-17 00:18:39,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2024-11-17 00:18:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 73 proven. 74 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 00:18:39,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:41,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-17 00:18:41,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:18:41,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 45 [2024-11-17 00:18:41,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 21 proven. 126 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-17 00:18:41,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367696528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:41,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:41,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 61 [2024-11-17 00:18:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503916506] [2024-11-17 00:18:41,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:41,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-17 00:18:41,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-17 00:18:41,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=3356, Unknown=0, NotChecked=0, Total=3782 [2024-11-17 00:18:41,558 INFO L87 Difference]: Start difference. First operand 338 states and 363 transitions. Second operand has 62 states, 61 states have (on average 3.3278688524590163) internal successors, (203), 62 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:44,651 INFO L93 Difference]: Finished difference Result 379 states and 401 transitions. [2024-11-17 00:18:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-17 00:18:44,651 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 3.3278688524590163) internal successors, (203), 62 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-17 00:18:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:44,652 INFO L225 Difference]: With dead ends: 379 [2024-11-17 00:18:44,652 INFO L226 Difference]: Without dead ends: 379 [2024-11-17 00:18:44,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1054, Invalid=8648, Unknown=0, NotChecked=0, Total=9702 [2024-11-17 00:18:44,653 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 342 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:44,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1387 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-17 00:18:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-17 00:18:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 352. [2024-11-17 00:18:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 348 states have (on average 1.0948275862068966) internal successors, (381), 351 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:44,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 381 transitions. [2024-11-17 00:18:44,657 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 381 transitions. Word has length 77 [2024-11-17 00:18:44,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:44,658 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 381 transitions. [2024-11-17 00:18:44,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 3.3278688524590163) internal successors, (203), 62 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:44,658 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 381 transitions. [2024-11-17 00:18:44,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-17 00:18:44,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:44,659 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:44,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-17 00:18:44,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-17 00:18:44,860 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:44,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash 902230850, now seen corresponding path program 10 times [2024-11-17 00:18:44,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:44,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933151773] [2024-11-17 00:18:44,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:44,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:45,886 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:45,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:45,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933151773] [2024-11-17 00:18:45,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933151773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:45,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682105221] [2024-11-17 00:18:45,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 00:18:45,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:45,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:45,888 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:45,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-17 00:18:46,118 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 00:18:46,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:46,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-17 00:18:46,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:46,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:46,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-17 00:18:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 35 proven. 163 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:18:46,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:46,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:46,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 35 proven. 163 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:18:47,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682105221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:47,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:47,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 23] total 50 [2024-11-17 00:18:47,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550333858] [2024-11-17 00:18:47,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:47,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-17 00:18:47,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:47,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-17 00:18:47,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=2338, Unknown=0, NotChecked=0, Total=2450 [2024-11-17 00:18:47,001 INFO L87 Difference]: Start difference. First operand 352 states and 381 transitions. Second operand has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:49,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:49,687 INFO L93 Difference]: Finished difference Result 609 states and 653 transitions. [2024-11-17 00:18:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-17 00:18:49,688 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-17 00:18:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:49,689 INFO L225 Difference]: With dead ends: 609 [2024-11-17 00:18:49,689 INFO L226 Difference]: Without dead ends: 492 [2024-11-17 00:18:49,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=306, Invalid=5546, Unknown=0, NotChecked=0, Total=5852 [2024-11-17 00:18:49,690 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 150 mSDsluCounter, 3541 mSDsCounter, 0 mSdLazyCounter, 4904 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 4938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:49,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 3632 Invalid, 4938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4904 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-17 00:18:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-17 00:18:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 456. [2024-11-17 00:18:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 452 states have (on average 1.1283185840707965) internal successors, (510), 455 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 510 transitions. [2024-11-17 00:18:49,695 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 510 transitions. Word has length 83 [2024-11-17 00:18:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:49,695 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 510 transitions. [2024-11-17 00:18:49,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.32) internal successors, (166), 50 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 510 transitions. [2024-11-17 00:18:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-17 00:18:49,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:49,697 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:49,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-17 00:18:49,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-17 00:18:49,897 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:49,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2056271367, now seen corresponding path program 8 times [2024-11-17 00:18:49,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:49,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228622454] [2024-11-17 00:18:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:49,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 18 proven. 97 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 00:18:50,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:50,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228622454] [2024-11-17 00:18:50,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228622454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:50,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822165951] [2024-11-17 00:18:50,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:18:50,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:50,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:50,436 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:50,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-17 00:18:50,651 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:18:50,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:50,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-17 00:18:50,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 32 proven. 83 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 00:18:50,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:51,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-17 00:18:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 32 proven. 83 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 00:18:51,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822165951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:51,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:51,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2024-11-17 00:18:51,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021673029] [2024-11-17 00:18:51,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:51,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-17 00:18:51,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:51,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-17 00:18:51,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1053, Unknown=0, NotChecked=0, Total=1190 [2024-11-17 00:18:51,278 INFO L87 Difference]: Start difference. First operand 456 states and 510 transitions. Second operand has 35 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:51,754 INFO L93 Difference]: Finished difference Result 460 states and 509 transitions. [2024-11-17 00:18:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-17 00:18:51,755 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-17 00:18:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:51,756 INFO L225 Difference]: With dead ends: 460 [2024-11-17 00:18:51,756 INFO L226 Difference]: Without dead ends: 460 [2024-11-17 00:18:51,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2024-11-17 00:18:51,757 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 84 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:51,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 806 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:18:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-17 00:18:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 456. [2024-11-17 00:18:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 452 states have (on average 1.1194690265486726) internal successors, (506), 455 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:51,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 506 transitions. [2024-11-17 00:18:51,763 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 506 transitions. Word has length 83 [2024-11-17 00:18:51,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:51,764 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 506 transitions. [2024-11-17 00:18:51,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 35 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:51,764 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 506 transitions. [2024-11-17 00:18:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-17 00:18:51,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:51,765 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:51,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-17 00:18:51,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:51,971 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:51,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:51,971 INFO L85 PathProgramCache]: Analyzing trace with hash 680097028, now seen corresponding path program 5 times [2024-11-17 00:18:51,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:51,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265777943] [2024-11-17 00:18:51,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 102 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 00:18:52,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:52,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265777943] [2024-11-17 00:18:52,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265777943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:52,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515429317] [2024-11-17 00:18:52,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 00:18:52,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:52,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:52,353 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:52,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-17 00:18:52,794 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-17 00:18:52,794 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:52,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-17 00:18:52,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 32 proven. 88 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 00:18:53,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:53,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-17 00:18:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 32 proven. 88 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 00:18:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515429317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:53,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:53,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2024-11-17 00:18:53,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745549161] [2024-11-17 00:18:53,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:53,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-17 00:18:53,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:53,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-17 00:18:53,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1483, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 00:18:53,469 INFO L87 Difference]: Start difference. First operand 456 states and 506 transitions. Second operand has 42 states, 41 states have (on average 4.097560975609756) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:53,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:18:53,913 INFO L93 Difference]: Finished difference Result 471 states and 515 transitions. [2024-11-17 00:18:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 00:18:53,913 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 4.097560975609756) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 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 84 [2024-11-17 00:18:53,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:18:53,915 INFO L225 Difference]: With dead ends: 471 [2024-11-17 00:18:53,915 INFO L226 Difference]: Without dead ends: 468 [2024-11-17 00:18:53,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=298, Invalid=1958, Unknown=0, NotChecked=0, Total=2256 [2024-11-17 00:18:53,916 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 56 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:18:53,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 906 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:18:53,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-17 00:18:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 456. [2024-11-17 00:18:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 452 states have (on average 1.1017699115044248) internal successors, (498), 455 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 498 transitions. [2024-11-17 00:18:53,921 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 498 transitions. Word has length 84 [2024-11-17 00:18:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:18:53,921 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 498 transitions. [2024-11-17 00:18:53,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 4.097560975609756) internal successors, (168), 42 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:18:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 498 transitions. [2024-11-17 00:18:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-17 00:18:53,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:18:53,923 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:18:53,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-17 00:18:54,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-17 00:18:54,123 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:18:54,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:18:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1616621472, now seen corresponding path program 11 times [2024-11-17 00:18:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:18:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739878816] [2024-11-17 00:18:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:18:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:18:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:18:54,859 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 16 proven. 214 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:54,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:18:54,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739878816] [2024-11-17 00:18:54,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739878816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:18:54,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961077090] [2024-11-17 00:18:54,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 00:18:54,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:18:54,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:18:54,861 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:18:54,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-17 00:18:55,061 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-17 00:18:55,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:18:55,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-17 00:18:55,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:18:55,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:18:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 16 proven. 214 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:55,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:18:55,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-17 00:18:55,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-17 00:18:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 16 proven. 214 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:18:55,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961077090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:18:55,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:18:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 41 [2024-11-17 00:18:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669421395] [2024-11-17 00:18:55,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:18:55,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-17 00:18:55,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:18:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-17 00:18:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2024-11-17 00:18:55,554 INFO L87 Difference]: Start difference. First operand 456 states and 498 transitions. Second operand has 41 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 41 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)