./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c --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/memsafety-ext3/getNumbers4-1.c -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 6bc6b4117baccd9c0c047fce306a2f95fb55fa90595dfb64eaa429319b56a306 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:31:16,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:31:16,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:31:16,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:31:16,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:31:16,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:31:16,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:31:16,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:31:16,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:31:16,173 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:31:16,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:31:16,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:31:16,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:31:16,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:31:16,177 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:31:16,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:31:16,178 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:31:16,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:31:16,178 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:31:16,178 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:31:16,178 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:31:16,181 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:31:16,181 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:31:16,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:31:16,182 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:31:16,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:31:16,182 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:31:16,182 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:31:16,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:31:16,183 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:31:16,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:31:16,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:31:16,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:31:16,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:31:16,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:31:16,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:31:16,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:31:16,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:31:16,184 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:31:16,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:31:16,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:31:16,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:31:16,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bc6b4117baccd9c0c047fce306a2f95fb55fa90595dfb64eaa429319b56a306 [2024-11-17 00:31:16,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:31:16,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:31:16,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:31:16,423 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:31:16,423 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:31:16,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c [2024-11-17 00:31:17,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:31:17,956 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:31:17,958 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers4-1.c [2024-11-17 00:31:17,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1bbcca5/0afa91dd37d245739702140968915ff6/FLAG7c70bb65f [2024-11-17 00:31:18,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb1bbcca5/0afa91dd37d245739702140968915ff6 [2024-11-17 00:31:18,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:31:18,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:31:18,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:31:18,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:31:18,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:31:18,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3b160e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18, skipping insertion in model container [2024-11-17 00:31:18,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,378 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:31:18,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:31:18,537 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:31:18,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:31:18,575 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:31:18,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18 WrapperNode [2024-11-17 00:31:18,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:31:18,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:31:18,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:31:18,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:31:18,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,608 INFO L138 Inliner]: procedures = 13, calls = 58, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 128 [2024-11-17 00:31:18,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:31:18,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:31:18,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:31:18,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:31:18,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,631 INFO L175 MemorySlicer]: Split 48 memory accesses to 4 slices as follows [12, 12, 12, 12]. 25 percent of accesses are in the largest equivalence class. The 40 initializations are split as follows [10, 10, 10, 10]. The 4 writes are split as follows [1, 1, 1, 1]. [2024-11-17 00:31:18,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,636 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:31:18,641 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:31:18,641 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:31:18,641 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:31:18,642 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (1/1) ... [2024-11-17 00:31:18,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:31:18,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:18,674 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 00:31:18,676 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 00:31:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:31:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 00:31:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 00:31:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 00:31:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 00:31:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:31:18,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:31:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 00:31:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 00:31:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 00:31:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 00:31:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 00:31:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 00:31:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 00:31:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 00:31:18,821 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:31:18,822 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:31:19,029 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-17 00:31:19,029 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:31:19,040 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:31:19,040 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:31:19,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:31:19 BoogieIcfgContainer [2024-11-17 00:31:19,044 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:31:19,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:31:19,046 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:31:19,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:31:19,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:31:18" (1/3) ... [2024-11-17 00:31:19,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20aa6c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:31:19, skipping insertion in model container [2024-11-17 00:31:19,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:31:18" (2/3) ... [2024-11-17 00:31:19,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20aa6c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:31:19, skipping insertion in model container [2024-11-17 00:31:19,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:31:19" (3/3) ... [2024-11-17 00:31:19,053 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers4-1.c [2024-11-17 00:31:19,067 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:31:19,067 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-17 00:31:19,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:31:19,122 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;@644150a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:31:19,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 00:31:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 55 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 00:31:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:31:19,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:19,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:31:19,134 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:19,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash 95397697, now seen corresponding path program 1 times [2024-11-17 00:31:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:19,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931087490] [2024-11-17 00:31:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:19,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:19,507 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 00:31:19,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:19,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931087490] [2024-11-17 00:31:19,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931087490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:19,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:19,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:31:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840951499] [2024-11-17 00:31:19,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:19,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:31:19,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:31:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:31:19,538 INFO L87 Difference]: Start difference. First operand has 56 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 55 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 00:31:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:19,597 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2024-11-17 00:31:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:31:19,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-17 00:31:19,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:19,605 INFO L225 Difference]: With dead ends: 61 [2024-11-17 00:31:19,605 INFO L226 Difference]: Without dead ends: 58 [2024-11-17 00:31:19,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 00:31:19,608 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 63 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:19,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 76 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:19,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-17 00:31:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-17 00:31:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.564102564102564) internal successors, (61), 55 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2024-11-17 00:31:19,688 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 5 [2024-11-17 00:31:19,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:19,689 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2024-11-17 00:31:19,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 00:31:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2024-11-17 00:31:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:31:19,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:19,689 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:31:19,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:31:19,690 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 00:31:19,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:19,722 INFO L85 PathProgramCache]: Analyzing trace with hash 95397696, now seen corresponding path program 1 times [2024-11-17 00:31:19,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:19,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37527519] [2024-11-17 00:31:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:19,790 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 00:31:19,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:19,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37527519] [2024-11-17 00:31:19,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37527519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 00:31:19,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911130798] [2024-11-17 00:31:19,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:19,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:31:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:31:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:19,796 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 00:31:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:19,832 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2024-11-17 00:31:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:31:19,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-17 00:31:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:19,834 INFO L225 Difference]: With dead ends: 55 [2024-11-17 00:31:19,834 INFO L226 Difference]: Without dead ends: 55 [2024-11-17 00:31:19,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:19,835 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:19,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 37 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-17 00:31:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-17 00:31:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.5128205128205128) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2024-11-17 00:31:19,844 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 5 [2024-11-17 00:31:19,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:19,845 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2024-11-17 00:31:19,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 00:31:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2024-11-17 00:31:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-17 00:31:19,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:19,846 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-17 00:31:19,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:31:19,846 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 00:31:19,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash -887575005, now seen corresponding path program 1 times [2024-11-17 00:31:19,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:19,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966865305] [2024-11-17 00:31:19,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:19,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:20,033 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 00:31:20,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966865305] [2024-11-17 00:31:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966865305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652095091] [2024-11-17 00:31:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:20,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:20,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:20,039 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 00:31:20,043 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 00:31:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:20,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:31:20,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:20,265 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 00:31:20,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:20,359 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 00:31:20,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652095091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:20,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:20,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-17 00:31:20,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597880291] [2024-11-17 00:31:20,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:20,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 00:31:20,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:20,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 00:31:20,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:31:20,363 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 00:31:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:20,520 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2024-11-17 00:31:20,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:31:20,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-17 00:31:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:20,521 INFO L225 Difference]: With dead ends: 65 [2024-11-17 00:31:20,521 INFO L226 Difference]: Without dead ends: 65 [2024-11-17 00:31:20,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:31:20,523 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 141 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:20,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 141 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-17 00:31:20,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-17 00:31:20,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.38) internal successors, (69), 64 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 00:31:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-17 00:31:20,527 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 9 [2024-11-17 00:31:20,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:20,527 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-17 00:31:20,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 00:31:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-17 00:31:20,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:31:20,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:20,528 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:20,545 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 00:31:20,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:20,730 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 00:31:20,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1961406529, now seen corresponding path program 1 times [2024-11-17 00:31:20,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:20,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075769078] [2024-11-17 00:31:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:20,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-17 00:31:20,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:20,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075769078] [2024-11-17 00:31:20,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075769078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:20,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:20,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:31:20,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024352223] [2024-11-17 00:31:20,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:20,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:31:20,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:20,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:31:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:31:20,816 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:20,861 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2024-11-17 00:31:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:31:20,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-17 00:31:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:20,862 INFO L225 Difference]: With dead ends: 64 [2024-11-17 00:31:20,862 INFO L226 Difference]: Without dead ends: 64 [2024-11-17 00:31:20,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:31:20,863 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 55 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:20,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 96 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-17 00:31:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-17 00:31:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.36) internal successors, (68), 63 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 00:31:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2024-11-17 00:31:20,868 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 25 [2024-11-17 00:31:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:20,868 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2024-11-17 00:31:20,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2024-11-17 00:31:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:31:20,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:20,869 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:20,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:31:20,869 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:20,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1961406530, now seen corresponding path program 1 times [2024-11-17 00:31:20,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:20,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951299070] [2024-11-17 00:31:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:20,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:31:20,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:20,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951299070] [2024-11-17 00:31:20,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951299070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:20,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473018273] [2024-11-17 00:31:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:20,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:20,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:20,948 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 00:31:20,953 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 00:31:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:21,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:31:21,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:31:21,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:31:21,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473018273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:21,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:21,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-17 00:31:21,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660405936] [2024-11-17 00:31:21,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:21,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:31:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:31:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:31:21,115 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:21,153 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2024-11-17 00:31:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:31:21,153 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-17 00:31:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:21,154 INFO L225 Difference]: With dead ends: 88 [2024-11-17 00:31:21,154 INFO L226 Difference]: Without dead ends: 88 [2024-11-17 00:31:21,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:31:21,155 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 4 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 199 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 00:31:21,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 199 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-17 00:31:21,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-17 00:31:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 87 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 00:31:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2024-11-17 00:31:21,164 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 25 [2024-11-17 00:31:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:21,165 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2024-11-17 00:31:21,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2024-11-17 00:31:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-17 00:31:21,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:21,166 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:21,183 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 00:31:21,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:21,367 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 00:31:21,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:21,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1247734926, now seen corresponding path program 2 times [2024-11-17 00:31:21,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:21,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135970922] [2024-11-17 00:31:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:21,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:21,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135970922] [2024-11-17 00:31:21,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135970922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:21,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:21,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:31:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094005111] [2024-11-17 00:31:21,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:21,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:31:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:31:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:31:21,531 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.0) 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 00:31:21,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:21,592 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2024-11-17 00:31:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:31:21,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) 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 49 [2024-11-17 00:31:21,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:21,593 INFO L225 Difference]: With dead ends: 94 [2024-11-17 00:31:21,593 INFO L226 Difference]: Without dead ends: 94 [2024-11-17 00:31:21,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:31:21,594 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 57 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:21,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 98 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-17 00:31:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2024-11-17 00:31:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2024-11-17 00:31:21,598 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 49 [2024-11-17 00:31:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:21,599 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2024-11-17 00:31:21,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) 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 00:31:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2024-11-17 00:31:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-17 00:31:21,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:21,600 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:21,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 00:31:21,600 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:21,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 25077029, now seen corresponding path program 1 times [2024-11-17 00:31:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:21,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724224013] [2024-11-17 00:31:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:21,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724224013] [2024-11-17 00:31:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724224013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:21,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 00:31:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777032816] [2024-11-17 00:31:21,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:21,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:31:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:31:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:21,709 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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 00:31:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:21,726 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2024-11-17 00:31:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:31:21,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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 50 [2024-11-17 00:31:21,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:21,727 INFO L225 Difference]: With dead ends: 90 [2024-11-17 00:31:21,728 INFO L226 Difference]: Without dead ends: 90 [2024-11-17 00:31:21,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:21,728 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 36 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 00:31:21,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-17 00:31:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-17 00:31:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 89 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 00:31:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2024-11-17 00:31:21,737 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 50 [2024-11-17 00:31:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:21,738 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2024-11-17 00:31:21,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 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 00:31:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2024-11-17 00:31:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-17 00:31:21,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:21,741 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:21,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 00:31:21,741 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 00:31:21,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 25077030, now seen corresponding path program 1 times [2024-11-17 00:31:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732345138] [2024-11-17 00:31:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:21,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732345138] [2024-11-17 00:31:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732345138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:21,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:21,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:31:21,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700965426] [2024-11-17 00:31:21,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:21,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:31:21,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:21,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:31:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:31:21,921 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 00:31:21,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:21,952 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2024-11-17 00:31:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:31:21,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 50 [2024-11-17 00:31:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:21,953 INFO L225 Difference]: With dead ends: 92 [2024-11-17 00:31:21,953 INFO L226 Difference]: Without dead ends: 92 [2024-11-17 00:31:21,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 00:31:21,955 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 46 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:21,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 65 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-17 00:31:21,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2024-11-17 00:31:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2024-11-17 00:31:21,963 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 50 [2024-11-17 00:31:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:21,964 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2024-11-17 00:31:21,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 00:31:21,964 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2024-11-17 00:31:21,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-17 00:31:21,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:21,964 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:21,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 00:31:21,965 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:21,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash 699771307, now seen corresponding path program 1 times [2024-11-17 00:31:21,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:21,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320258384] [2024-11-17 00:31:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:21,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:22,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:22,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320258384] [2024-11-17 00:31:22,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320258384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:22,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620042603] [2024-11-17 00:31:22,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:22,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:22,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:22,137 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 00:31:22,138 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 00:31:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:22,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 00:31:22,206 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:22,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:22,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620042603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:22,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:22,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-17 00:31:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902231657] [2024-11-17 00:31:22,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:22,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 00:31:22,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:22,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 00:31:22,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:31:22,763 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 00:31:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:22,917 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2024-11-17 00:31:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:31:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 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 54 [2024-11-17 00:31:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:22,918 INFO L225 Difference]: With dead ends: 105 [2024-11-17 00:31:22,918 INFO L226 Difference]: Without dead ends: 105 [2024-11-17 00:31:22,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:31:22,919 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:22,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 244 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-17 00:31:22,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-17 00:31:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 104 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 00:31:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2024-11-17 00:31:22,923 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 54 [2024-11-17 00:31:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:22,923 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2024-11-17 00:31:22,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 00:31:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2024-11-17 00:31:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-17 00:31:22,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:22,924 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:22,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 00:31:23,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:23,124 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:23,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:23,125 INFO L85 PathProgramCache]: Analyzing trace with hash 218074025, now seen corresponding path program 1 times [2024-11-17 00:31:23,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:23,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101102374] [2024-11-17 00:31:23,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:23,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:23,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:23,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101102374] [2024-11-17 00:31:23,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101102374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:23,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942074406] [2024-11-17 00:31:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:23,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:23,279 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 00:31:23,280 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 00:31:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:23,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:31:23,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:23,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:23,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942074406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:23,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:23,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 00:31:23,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733338247] [2024-11-17 00:31:23,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:23,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:31:23,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:23,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:31:23,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:31:23,727 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 00:31:23,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:23,846 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2024-11-17 00:31:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:31:23,846 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 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 55 [2024-11-17 00:31:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:23,847 INFO L225 Difference]: With dead ends: 106 [2024-11-17 00:31:23,847 INFO L226 Difference]: Without dead ends: 106 [2024-11-17 00:31:23,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:31:23,847 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 173 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:23,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 187 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:23,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-17 00:31:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-17 00:31:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 105 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 00:31:23,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2024-11-17 00:31:23,850 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 55 [2024-11-17 00:31:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:23,850 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2024-11-17 00:31:23,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 00:31:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2024-11-17 00:31:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-17 00:31:23,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:23,851 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:23,864 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 00:31:24,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:24,052 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:24,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 259922126, now seen corresponding path program 2 times [2024-11-17 00:31:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:24,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446605677] [2024-11-17 00:31:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:24,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446605677] [2024-11-17 00:31:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446605677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386118836] [2024-11-17 00:31:24,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:31:24,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:24,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:24,433 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 00:31:24,434 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 00:31:24,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:31:24,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:31:24,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 00:31:24,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:24,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:31:24,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386118836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:24,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:31:24,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 15 [2024-11-17 00:31:24,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744277582] [2024-11-17 00:31:24,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:24,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:31:24,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:31:24,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-17 00:31:24,892 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:31:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:25,093 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2024-11-17 00:31:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:31:25,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 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 69 [2024-11-17 00:31:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:25,095 INFO L225 Difference]: With dead ends: 106 [2024-11-17 00:31:25,095 INFO L226 Difference]: Without dead ends: 106 [2024-11-17 00:31:25,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:31:25,096 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 49 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:25,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 192 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-17 00:31:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-11-17 00:31:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 104 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 00:31:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2024-11-17 00:31:25,099 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 69 [2024-11-17 00:31:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:25,099 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2024-11-17 00:31:25,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:31:25,100 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2024-11-17 00:31:25,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-17 00:31:25,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:25,101 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:25,114 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 00:31:25,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-17 00:31:25,307 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:25,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash -532348698, now seen corresponding path program 2 times [2024-11-17 00:31:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:25,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376069403] [2024-11-17 00:31:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-17 00:31:25,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:25,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376069403] [2024-11-17 00:31:25,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376069403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213412583] [2024-11-17 00:31:25,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:31:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:25,625 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 00:31:25,626 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 00:31:25,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 00:31:25,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:31:25,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 00:31:25,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-17 00:31:26,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-17 00:31:26,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213412583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:26,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:26,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-17 00:31:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365356855] [2024-11-17 00:31:26,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:26,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 00:31:26,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 00:31:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-17 00:31:26,761 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 00:31:26,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:26,928 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2024-11-17 00:31:26,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:31:26,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 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 00:31:26,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:26,929 INFO L225 Difference]: With dead ends: 104 [2024-11-17 00:31:26,929 INFO L226 Difference]: Without dead ends: 104 [2024-11-17 00:31:26,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:31:26,930 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 115 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:26,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 298 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-17 00:31:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2024-11-17 00:31:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 91 states have (on average 1.164835164835165) internal successors, (106), 101 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 00:31:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2024-11-17 00:31:26,937 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 70 [2024-11-17 00:31:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:26,937 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2024-11-17 00:31:26,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 00:31:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2024-11-17 00:31:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-17 00:31:26,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:26,937 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:26,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 00:31:27,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:27,138 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:27,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2080778179, now seen corresponding path program 1 times [2024-11-17 00:31:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374158490] [2024-11-17 00:31:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-17 00:31:27,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:27,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374158490] [2024-11-17 00:31:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374158490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:27,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:27,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:31:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691470199] [2024-11-17 00:31:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:27,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:31:27,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:31:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:31:27,205 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 00:31:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:27,239 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2024-11-17 00:31:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:31:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 00:31:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:27,240 INFO L225 Difference]: With dead ends: 101 [2024-11-17 00:31:27,240 INFO L226 Difference]: Without dead ends: 101 [2024-11-17 00:31:27,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:31:27,240 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 50 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:27,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 90 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-17 00:31:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-17 00:31:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 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 00:31:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2024-11-17 00:31:27,242 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 73 [2024-11-17 00:31:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:27,242 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2024-11-17 00:31:27,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 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 00:31:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2024-11-17 00:31:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-17 00:31:27,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:27,243 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:27,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 00:31:27,247 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 00:31:27,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2080778180, now seen corresponding path program 1 times [2024-11-17 00:31:27,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:27,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677610445] [2024-11-17 00:31:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:27,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:27,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:27,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677610445] [2024-11-17 00:31:27,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677610445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:27,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014278871] [2024-11-17 00:31:27,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:27,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:27,328 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 00:31:27,329 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 00:31:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:27,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:31:27,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:27,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-17 00:31:27,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014278871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:27,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:27,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-17 00:31:27,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849510392] [2024-11-17 00:31:27,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:27,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:31:27,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:31:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:31:27,495 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 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 00:31:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:27,535 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2024-11-17 00:31:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:31:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 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) Word has length 73 [2024-11-17 00:31:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:27,535 INFO L225 Difference]: With dead ends: 131 [2024-11-17 00:31:27,536 INFO L226 Difference]: Without dead ends: 131 [2024-11-17 00:31:27,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:31:27,536 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:27,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-17 00:31:27,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-11-17 00:31:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 121 states have (on average 1.115702479338843) internal successors, (135), 130 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 00:31:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2024-11-17 00:31:27,540 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 73 [2024-11-17 00:31:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:27,540 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2024-11-17 00:31:27,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 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 00:31:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2024-11-17 00:31:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-17 00:31:27,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:27,542 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:27,555 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 00:31:27,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:27,746 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:27,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1189121572, now seen corresponding path program 2 times [2024-11-17 00:31:27,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:27,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990174907] [2024-11-17 00:31:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:27,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:27,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990174907] [2024-11-17 00:31:27,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990174907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:27,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:27,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:31:27,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580021202] [2024-11-17 00:31:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:27,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:31:27,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:31:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:31:27,981 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:28,034 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2024-11-17 00:31:28,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:31:28,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-17 00:31:28,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:28,035 INFO L225 Difference]: With dead ends: 137 [2024-11-17 00:31:28,035 INFO L226 Difference]: Without dead ends: 137 [2024-11-17 00:31:28,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:31:28,035 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:28,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 92 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-17 00:31:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2024-11-17 00:31:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 124 states have (on average 1.1129032258064515) internal successors, (138), 133 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 00:31:28,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2024-11-17 00:31:28,037 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 103 [2024-11-17 00:31:28,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:28,038 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2024-11-17 00:31:28,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2024-11-17 00:31:28,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-17 00:31:28,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:28,041 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:28,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 00:31:28,041 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:28,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:28,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1791936959, now seen corresponding path program 1 times [2024-11-17 00:31:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:28,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555131662] [2024-11-17 00:31:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:28,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:28,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:28,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555131662] [2024-11-17 00:31:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555131662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:28,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 00:31:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550243634] [2024-11-17 00:31:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:28,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:31:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:31:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:28,128 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 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 00:31:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:28,140 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2024-11-17 00:31:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:31:28,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 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 104 [2024-11-17 00:31:28,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:28,141 INFO L225 Difference]: With dead ends: 133 [2024-11-17 00:31:28,141 INFO L226 Difference]: Without dead ends: 133 [2024-11-17 00:31:28,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:28,142 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:28,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-17 00:31:28,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-17 00:31:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 124 states have (on average 1.1048387096774193) internal successors, (137), 132 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 00:31:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 137 transitions. [2024-11-17 00:31:28,145 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 137 transitions. Word has length 104 [2024-11-17 00:31:28,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:28,145 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 137 transitions. [2024-11-17 00:31:28,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 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 00:31:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 137 transitions. [2024-11-17 00:31:28,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-17 00:31:28,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:28,147 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:28,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 00:31:28,147 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:28,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:28,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1791936958, now seen corresponding path program 1 times [2024-11-17 00:31:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:28,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943357668] [2024-11-17 00:31:28,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:28,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:28,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:28,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943357668] [2024-11-17 00:31:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943357668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:28,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:31:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607714297] [2024-11-17 00:31:28,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:28,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:31:28,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:31:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:31:28,298 INFO L87 Difference]: Start difference. First operand 133 states and 137 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:28,324 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2024-11-17 00:31:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:31:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-17 00:31:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:28,325 INFO L225 Difference]: With dead ends: 135 [2024-11-17 00:31:28,325 INFO L226 Difference]: Without dead ends: 135 [2024-11-17 00:31:28,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 00:31:28,326 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 61 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 00:31:28,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 61 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:28,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-17 00:31:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2024-11-17 00:31:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 125 states have (on average 1.104) internal successors, (138), 133 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 00:31:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2024-11-17 00:31:28,328 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 104 [2024-11-17 00:31:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:28,328 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2024-11-17 00:31:28,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2024-11-17 00:31:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-17 00:31:28,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:28,329 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:28,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-17 00:31:28,329 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:28,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:28,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1858356921, now seen corresponding path program 1 times [2024-11-17 00:31:28,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:28,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709674916] [2024-11-17 00:31:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:28,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:28,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:28,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709674916] [2024-11-17 00:31:28,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709674916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:28,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401521427] [2024-11-17 00:31:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:28,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:28,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:28,583 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 00:31:28,587 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 00:31:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:28,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 00:31:28,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:29,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401521427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:29,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:29,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-17 00:31:29,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926541700] [2024-11-17 00:31:29,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:29,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 00:31:29,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 00:31:29,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:31:29,431 INFO L87 Difference]: Start difference. First operand 134 states and 138 transitions. Second operand has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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 00:31:29,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:29,584 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2024-11-17 00:31:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:31:29,585 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) Word has length 108 [2024-11-17 00:31:29,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:29,585 INFO L225 Difference]: With dead ends: 148 [2024-11-17 00:31:29,585 INFO L226 Difference]: Without dead ends: 148 [2024-11-17 00:31:29,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:31:29,586 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 66 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:29,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 150 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-17 00:31:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-17 00:31:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 147 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 00:31:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 156 transitions. [2024-11-17 00:31:29,588 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 156 transitions. Word has length 108 [2024-11-17 00:31:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:29,588 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 156 transitions. [2024-11-17 00:31:29,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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 00:31:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 156 transitions. [2024-11-17 00:31:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-17 00:31:29,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:29,589 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:29,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 00:31:29,789 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,SelfDestructingSolverStorable17 [2024-11-17 00:31:29,790 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:29,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1774489729, now seen corresponding path program 1 times [2024-11-17 00:31:29,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:29,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280182772] [2024-11-17 00:31:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:29,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280182772] [2024-11-17 00:31:29,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280182772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:29,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297121995] [2024-11-17 00:31:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:29,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:29,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:29,950 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 00:31:29,955 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 00:31:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:30,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:31:30,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:30,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:30,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297121995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:30,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:30,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 00:31:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739734591] [2024-11-17 00:31:30,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:30,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:31:30,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:30,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:31:30,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:31:30,738 INFO L87 Difference]: Start difference. First operand 148 states and 156 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 10 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 00:31:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:30,849 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2024-11-17 00:31:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:31:30,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-17 00:31:30,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:30,851 INFO L225 Difference]: With dead ends: 149 [2024-11-17 00:31:30,851 INFO L226 Difference]: Without dead ends: 149 [2024-11-17 00:31:30,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:31:30,851 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 138 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:30,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 121 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-17 00:31:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-17 00:31:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 140 states have (on average 1.0928571428571427) internal successors, (153), 148 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 153 transitions. [2024-11-17 00:31:30,854 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 153 transitions. Word has length 109 [2024-11-17 00:31:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:30,854 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 153 transitions. [2024-11-17 00:31:30,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 10 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 00:31:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 153 transitions. [2024-11-17 00:31:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-17 00:31:30,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:30,855 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:30,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 00:31:31,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:31,056 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:31,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:31,056 INFO L85 PathProgramCache]: Analyzing trace with hash -381832732, now seen corresponding path program 2 times [2024-11-17 00:31:31,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:31,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632064835] [2024-11-17 00:31:31,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:31,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:31,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:31,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632064835] [2024-11-17 00:31:31,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632064835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:31,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637475845] [2024-11-17 00:31:31,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:31:31,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:31,355 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 00:31:31,359 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 00:31:31,471 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:31:31,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:31:31,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 00:31:31,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:31,976 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:31:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637475845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:31,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:31:31,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 15 [2024-11-17 00:31:31,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362174453] [2024-11-17 00:31:31,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:31,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:31:31,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:31,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:31:31,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-17 00:31:31,977 INFO L87 Difference]: Start difference. First operand 149 states and 153 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:32,133 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2024-11-17 00:31:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:31:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2024-11-17 00:31:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:32,134 INFO L225 Difference]: With dead ends: 149 [2024-11-17 00:31:32,134 INFO L226 Difference]: Without dead ends: 149 [2024-11-17 00:31:32,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:31:32,135 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 35 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:32,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 129 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-17 00:31:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2024-11-17 00:31:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 140 states have (on average 1.0857142857142856) internal successors, (152), 147 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 00:31:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 152 transitions. [2024-11-17 00:31:32,137 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 152 transitions. Word has length 123 [2024-11-17 00:31:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:32,137 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 152 transitions. [2024-11-17 00:31:32,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 152 transitions. [2024-11-17 00:31:32,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-17 00:31:32,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:32,146 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:32,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 00:31:32,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:32,346 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:32,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1048087170, now seen corresponding path program 2 times [2024-11-17 00:31:32,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:32,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273180805] [2024-11-17 00:31:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:32,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:32,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:32,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273180805] [2024-11-17 00:31:32,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273180805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:32,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045977181] [2024-11-17 00:31:32,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:31:32,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:32,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:32,610 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 00:31:32,611 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 00:31:32,695 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 00:31:32,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:31:32,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 00:31:32,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2024-11-17 00:31:33,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2024-11-17 00:31:34,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045977181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:34,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:34,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-17 00:31:34,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846959565] [2024-11-17 00:31:34,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:34,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 00:31:34,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:34,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 00:31:34,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:31:34,229 INFO L87 Difference]: Start difference. First operand 148 states and 152 transitions. Second operand has 18 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 00:31:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:34,469 INFO L93 Difference]: Finished difference Result 156 states and 160 transitions. [2024-11-17 00:31:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:31:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 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 124 [2024-11-17 00:31:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:34,470 INFO L225 Difference]: With dead ends: 156 [2024-11-17 00:31:34,470 INFO L226 Difference]: Without dead ends: 156 [2024-11-17 00:31:34,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2024-11-17 00:31:34,471 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 216 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:34,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 221 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-17 00:31:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2024-11-17 00:31:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 148 states have (on average 1.0743243243243243) internal successors, (159), 154 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 00:31:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2024-11-17 00:31:34,473 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 124 [2024-11-17 00:31:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:34,473 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2024-11-17 00:31:34,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 00:31:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2024-11-17 00:31:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-17 00:31:34,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:34,474 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:34,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 00:31:34,674 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,SelfDestructingSolverStorable20 [2024-11-17 00:31:34,674 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:34,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:34,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1269198791, now seen corresponding path program 1 times [2024-11-17 00:31:34,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:34,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301078482] [2024-11-17 00:31:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:34,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2024-11-17 00:31:34,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:34,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301078482] [2024-11-17 00:31:34,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301078482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:34,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:34,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:31:34,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9535513] [2024-11-17 00:31:34,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:34,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:31:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:31:34,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:31:34,755 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:31:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:34,785 INFO L93 Difference]: Finished difference Result 154 states and 158 transitions. [2024-11-17 00:31:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:31:34,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 137 [2024-11-17 00:31:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:34,786 INFO L225 Difference]: With dead ends: 154 [2024-11-17 00:31:34,786 INFO L226 Difference]: Without dead ends: 154 [2024-11-17 00:31:34,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:31:34,787 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:34,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 84 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-17 00:31:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-17 00:31:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.0675675675675675) internal successors, (158), 153 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 00:31:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2024-11-17 00:31:34,789 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 137 [2024-11-17 00:31:34,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:34,789 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2024-11-17 00:31:34,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 00:31:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2024-11-17 00:31:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-17 00:31:34,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:34,790 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:34,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 00:31:34,790 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:34,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:34,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1269198790, now seen corresponding path program 1 times [2024-11-17 00:31:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:34,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479488709] [2024-11-17 00:31:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:34,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:34,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:34,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479488709] [2024-11-17 00:31:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479488709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850466345] [2024-11-17 00:31:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:34,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:34,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:34,911 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 00:31:34,912 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 00:31:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:35,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 00:31:35,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:35,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-17 00:31:35,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850466345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:35,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:35,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-17 00:31:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220735988] [2024-11-17 00:31:35,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:35,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:31:35,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:31:35,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:31:35,140 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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 00:31:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:35,181 INFO L93 Difference]: Finished difference Result 174 states and 178 transitions. [2024-11-17 00:31:35,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:31:35,181 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2024-11-17 00:31:35,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:35,182 INFO L225 Difference]: With dead ends: 174 [2024-11-17 00:31:35,182 INFO L226 Difference]: Without dead ends: 174 [2024-11-17 00:31:35,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 266 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:31:35,183 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:35,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 161 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-17 00:31:35,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-17 00:31:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 168 states have (on average 1.0595238095238095) internal successors, (178), 173 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 00:31:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 178 transitions. [2024-11-17 00:31:35,185 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 178 transitions. Word has length 137 [2024-11-17 00:31:35,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:35,185 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 178 transitions. [2024-11-17 00:31:35,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 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 00:31:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 178 transitions. [2024-11-17 00:31:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-17 00:31:35,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:35,186 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:35,203 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 00:31:35,386 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,SelfDestructingSolverStorable22 [2024-11-17 00:31:35,387 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:35,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1144898554, now seen corresponding path program 2 times [2024-11-17 00:31:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:35,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711115070] [2024-11-17 00:31:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:35,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:35,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:35,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711115070] [2024-11-17 00:31:35,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711115070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:35,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:35,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:31:35,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321803831] [2024-11-17 00:31:35,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:35,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:31:35,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:35,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:31:35,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:31:35,622 INFO L87 Difference]: Start difference. First operand 174 states and 178 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:35,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:35,673 INFO L93 Difference]: Finished difference Result 180 states and 185 transitions. [2024-11-17 00:31:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:31:35,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-11-17 00:31:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:35,674 INFO L225 Difference]: With dead ends: 180 [2024-11-17 00:31:35,674 INFO L226 Difference]: Without dead ends: 180 [2024-11-17 00:31:35,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:31:35,674 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:35,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 86 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-17 00:31:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2024-11-17 00:31:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 171 states have (on average 1.0584795321637428) internal successors, (181), 176 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 00:31:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2024-11-17 00:31:35,680 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 157 [2024-11-17 00:31:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:35,681 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2024-11-17 00:31:35,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2024-11-17 00:31:35,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-17 00:31:35,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:35,682 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:35,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-17 00:31:35,682 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:35,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1132116765, now seen corresponding path program 1 times [2024-11-17 00:31:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596797519] [2024-11-17 00:31:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:35,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:35,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:35,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596797519] [2024-11-17 00:31:35,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596797519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:35,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:35,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 00:31:35,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276293703] [2024-11-17 00:31:35,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:35,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:31:35,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:31:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:35,785 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 00:31:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:35,797 INFO L93 Difference]: Finished difference Result 176 states and 180 transitions. [2024-11-17 00:31:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:31:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2024-11-17 00:31:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:35,798 INFO L225 Difference]: With dead ends: 176 [2024-11-17 00:31:35,798 INFO L226 Difference]: Without dead ends: 176 [2024-11-17 00:31:35,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:35,799 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:35,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 32 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-17 00:31:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-17 00:31:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.0526315789473684) internal successors, (180), 175 states have internal predecessors, (180), 0 states have call successors, (0), 0 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 00:31:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 180 transitions. [2024-11-17 00:31:35,802 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 180 transitions. Word has length 158 [2024-11-17 00:31:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:35,802 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 180 transitions. [2024-11-17 00:31:35,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 00:31:35,802 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 180 transitions. [2024-11-17 00:31:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-17 00:31:35,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:35,803 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:35,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-17 00:31:35,803 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:35,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:35,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1132116766, now seen corresponding path program 1 times [2024-11-17 00:31:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:35,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072903574] [2024-11-17 00:31:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:35,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:36,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:36,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072903574] [2024-11-17 00:31:36,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072903574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:36,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:36,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:31:36,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494304079] [2024-11-17 00:31:36,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:36,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:31:36,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:36,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:31:36,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:31:36,003 INFO L87 Difference]: Start difference. First operand 176 states and 180 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 00:31:36,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:36,029 INFO L93 Difference]: Finished difference Result 178 states and 182 transitions. [2024-11-17 00:31:36,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:31:36,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2024-11-17 00:31:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:36,031 INFO L225 Difference]: With dead ends: 178 [2024-11-17 00:31:36,031 INFO L226 Difference]: Without dead ends: 178 [2024-11-17 00:31:36,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 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 00:31:36,031 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:36,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 57 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-17 00:31:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2024-11-17 00:31:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.052325581395349) internal successors, (181), 176 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 00:31:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 181 transitions. [2024-11-17 00:31:36,036 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 181 transitions. Word has length 158 [2024-11-17 00:31:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:36,036 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 181 transitions. [2024-11-17 00:31:36,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 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 00:31:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 181 transitions. [2024-11-17 00:31:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-17 00:31:36,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:36,038 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:36,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-17 00:31:36,038 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:36,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1127799971, now seen corresponding path program 1 times [2024-11-17 00:31:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:36,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20745666] [2024-11-17 00:31:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:36,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:36,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:36,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20745666] [2024-11-17 00:31:36,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20745666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:36,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603931987] [2024-11-17 00:31:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:36,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:36,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:36,284 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 00:31:36,285 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 00:31:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:36,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 00:31:36,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:36,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:37,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603931987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:37,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:37,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-11-17 00:31:37,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954928978] [2024-11-17 00:31:37,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:37,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 00:31:37,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:37,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 00:31:37,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:31:37,394 INFO L87 Difference]: Start difference. First operand 177 states and 181 transitions. Second operand has 15 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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 00:31:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:37,544 INFO L93 Difference]: Finished difference Result 191 states and 199 transitions. [2024-11-17 00:31:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:31:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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) Word has length 162 [2024-11-17 00:31:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:37,546 INFO L225 Difference]: With dead ends: 191 [2024-11-17 00:31:37,546 INFO L226 Difference]: Without dead ends: 191 [2024-11-17 00:31:37,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:31:37,546 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 98 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:37,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 188 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-17 00:31:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2024-11-17 00:31:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.0698924731182795) internal successors, (199), 190 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 00:31:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2024-11-17 00:31:37,549 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 162 [2024-11-17 00:31:37,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:37,549 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 199 transitions. [2024-11-17 00:31:37,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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 00:31:37,549 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 199 transitions. [2024-11-17 00:31:37,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-17 00:31:37,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:37,550 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:37,573 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 00:31:37,750 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,SelfDestructingSolverStorable26 [2024-11-17 00:31:37,751 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 00:31:37,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:37,751 INFO L85 PathProgramCache]: Analyzing trace with hash 602060693, now seen corresponding path program 1 times [2024-11-17 00:31:37,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:37,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571593795] [2024-11-17 00:31:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:37,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:37,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571593795] [2024-11-17 00:31:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571593795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:37,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664413043] [2024-11-17 00:31:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:37,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:37,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:37,931 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 00:31:37,933 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 00:31:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:38,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:31:38,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:38,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664413043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:39,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:39,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 00:31:39,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074405956] [2024-11-17 00:31:39,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:39,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:31:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:39,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:31:39,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:31:39,003 INFO L87 Difference]: Start difference. First operand 191 states and 199 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 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 00:31:39,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:39,095 INFO L93 Difference]: Finished difference Result 192 states and 196 transitions. [2024-11-17 00:31:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:31:39,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 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 163 [2024-11-17 00:31:39,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:39,096 INFO L225 Difference]: With dead ends: 192 [2024-11-17 00:31:39,096 INFO L226 Difference]: Without dead ends: 192 [2024-11-17 00:31:39,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:31:39,096 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:39,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 113 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-17 00:31:39,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-11-17 00:31:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.0481283422459893) internal successors, (196), 191 states have internal predecessors, (196), 0 states have call successors, (0), 0 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 00:31:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2024-11-17 00:31:39,102 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 163 [2024-11-17 00:31:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:39,102 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2024-11-17 00:31:39,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 10 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 00:31:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2024-11-17 00:31:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-17 00:31:39,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:39,103 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:39,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-17 00:31:39,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:39,304 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:39,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:39,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1552170810, now seen corresponding path program 2 times [2024-11-17 00:31:39,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:39,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175761442] [2024-11-17 00:31:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:39,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:39,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:39,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175761442] [2024-11-17 00:31:39,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175761442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:39,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955572595] [2024-11-17 00:31:39,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:31:39,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:39,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:39,604 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 00:31:39,605 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 00:31:39,798 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:31:39,799 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:31:39,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-17 00:31:39,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:40,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955572595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:41,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:41,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2024-11-17 00:31:41,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759095746] [2024-11-17 00:31:41,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:41,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-17 00:31:41,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-17 00:31:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:31:41,034 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 00:31:41,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:41,424 INFO L93 Difference]: Finished difference Result 221 states and 235 transitions. [2024-11-17 00:31:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:31:41,424 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 0 states have call successors, (0), 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 177 [2024-11-17 00:31:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:41,426 INFO L225 Difference]: With dead ends: 221 [2024-11-17 00:31:41,426 INFO L226 Difference]: Without dead ends: 221 [2024-11-17 00:31:41,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=258, Invalid=1002, Unknown=0, NotChecked=0, Total=1260 [2024-11-17 00:31:41,427 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 176 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:41,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 288 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:31:41,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-17 00:31:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-11-17 00:31:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 216 states have (on average 1.087962962962963) internal successors, (235), 220 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 00:31:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 235 transitions. [2024-11-17 00:31:41,435 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 235 transitions. Word has length 177 [2024-11-17 00:31:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:41,435 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 235 transitions. [2024-11-17 00:31:41,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 00:31:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 235 transitions. [2024-11-17 00:31:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-17 00:31:41,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:41,436 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:41,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 00:31:41,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-17 00:31:41,637 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:41,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash 872654814, now seen corresponding path program 2 times [2024-11-17 00:31:41,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:41,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46360808] [2024-11-17 00:31:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:41,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:41,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46360808] [2024-11-17 00:31:41,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46360808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327439601] [2024-11-17 00:31:41,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:31:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:41,965 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 00:31:41,966 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 00:31:42,097 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 00:31:42,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:31:42,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 00:31:42,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2024-11-17 00:31:43,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2024-11-17 00:31:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327439601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:44,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2024-11-17 00:31:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821265251] [2024-11-17 00:31:44,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:44,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 00:31:44,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 00:31:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:31:44,341 INFO L87 Difference]: Start difference. First operand 221 states and 235 transitions. Second operand has 18 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 00:31:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:44,593 INFO L93 Difference]: Finished difference Result 220 states and 228 transitions. [2024-11-17 00:31:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:31:44,593 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 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 178 [2024-11-17 00:31:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:44,594 INFO L225 Difference]: With dead ends: 220 [2024-11-17 00:31:44,594 INFO L226 Difference]: Without dead ends: 220 [2024-11-17 00:31:44,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2024-11-17 00:31:44,595 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 183 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:44,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 359 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:31:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-17 00:31:44,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-17 00:31:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 216 states have (on average 1.0555555555555556) internal successors, (228), 219 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 00:31:44,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 228 transitions. [2024-11-17 00:31:44,598 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 228 transitions. Word has length 178 [2024-11-17 00:31:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:44,598 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 228 transitions. [2024-11-17 00:31:44,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 00:31:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 228 transitions. [2024-11-17 00:31:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-17 00:31:44,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:44,599 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:44,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 00:31:44,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:44,799 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:44,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash -444779827, now seen corresponding path program 1 times [2024-11-17 00:31:44,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:44,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91739389] [2024-11-17 00:31:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2024-11-17 00:31:44,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91739389] [2024-11-17 00:31:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91739389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:44,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:44,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:31:44,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804868354] [2024-11-17 00:31:44,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:44,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:31:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:31:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:31:44,898 INFO L87 Difference]: Start difference. First operand 220 states and 228 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:44,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:44,925 INFO L93 Difference]: Finished difference Result 219 states and 227 transitions. [2024-11-17 00:31:44,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:31:44,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2024-11-17 00:31:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:44,926 INFO L225 Difference]: With dead ends: 219 [2024-11-17 00:31:44,926 INFO L226 Difference]: Without dead ends: 219 [2024-11-17 00:31:44,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:31:44,927 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:44,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 82 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-17 00:31:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-11-17 00:31:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 216 states have (on average 1.0509259259259258) internal successors, (227), 218 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:44,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2024-11-17 00:31:44,932 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 191 [2024-11-17 00:31:44,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:44,932 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2024-11-17 00:31:44,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2024-11-17 00:31:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-17 00:31:44,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:44,933 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:44,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-17 00:31:44,934 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:44,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:44,935 INFO L85 PathProgramCache]: Analyzing trace with hash -444779826, now seen corresponding path program 1 times [2024-11-17 00:31:44,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:44,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713761387] [2024-11-17 00:31:44,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:44,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:45,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713761387] [2024-11-17 00:31:45,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713761387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:45,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064253521] [2024-11-17 00:31:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:45,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:45,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:45,082 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 00:31:45,084 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 00:31:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:45,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 00:31:45,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:45,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064253521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:45,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:45,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-17 00:31:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686608928] [2024-11-17 00:31:45,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:45,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:31:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:45,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:31:45,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:31:45,364 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:45,408 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2024-11-17 00:31:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:31:45,408 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2024-11-17 00:31:45,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:45,409 INFO L225 Difference]: With dead ends: 219 [2024-11-17 00:31:45,409 INFO L226 Difference]: Without dead ends: 219 [2024-11-17 00:31:45,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 374 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:31:45,410 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:45,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 208 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-17 00:31:45,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-11-17 00:31:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 216 states have (on average 1.0324074074074074) internal successors, (223), 218 states have internal predecessors, (223), 0 states have call successors, (0), 0 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 00:31:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 223 transitions. [2024-11-17 00:31:45,412 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 223 transitions. Word has length 191 [2024-11-17 00:31:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:45,412 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 223 transitions. [2024-11-17 00:31:45,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 223 transitions. [2024-11-17 00:31:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-17 00:31:45,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:45,413 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:45,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-17 00:31:45,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:45,617 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:45,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:45,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2111077402, now seen corresponding path program 3 times [2024-11-17 00:31:45,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:45,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229632730] [2024-11-17 00:31:45,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:45,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 208 proven. 47 refuted. 0 times theorem prover too weak. 690 trivial. 0 not checked. [2024-11-17 00:31:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:45,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229632730] [2024-11-17 00:31:45,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229632730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:45,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650293736] [2024-11-17 00:31:45,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:31:45,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:45,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:45,824 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 00:31:45,825 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 00:31:45,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:31:45,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:31:45,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 00:31:45,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 897 trivial. 0 not checked. [2024-11-17 00:31:46,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:31:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650293736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:46,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:31:46,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 19 [2024-11-17 00:31:46,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429507046] [2024-11-17 00:31:46,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:46,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:31:46,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:46,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:31:46,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:31:46,681 INFO L87 Difference]: Start difference. First operand 219 states and 223 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:46,770 INFO L93 Difference]: Finished difference Result 218 states and 222 transitions. [2024-11-17 00:31:46,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:31:46,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-11-17 00:31:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:46,772 INFO L225 Difference]: With dead ends: 218 [2024-11-17 00:31:46,772 INFO L226 Difference]: Without dead ends: 218 [2024-11-17 00:31:46,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:31:46,772 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:46,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 131 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-17 00:31:46,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2024-11-17 00:31:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 215 states have (on average 1.027906976744186) internal successors, (221), 216 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 00:31:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2024-11-17 00:31:46,775 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 207 [2024-11-17 00:31:46,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:46,775 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2024-11-17 00:31:46,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2024-11-17 00:31:46,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-17 00:31:46,776 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:46,776 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:46,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-17 00:31:46,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:46,977 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 00:31:46,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1184161294, now seen corresponding path program 2 times [2024-11-17 00:31:46,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:46,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885704410] [2024-11-17 00:31:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:46,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 935 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2024-11-17 00:31:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:47,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885704410] [2024-11-17 00:31:47,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885704410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:47,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:47,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:31:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840388598] [2024-11-17 00:31:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:47,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:31:47,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:31:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:31:47,211 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:47,250 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2024-11-17 00:31:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:31:47,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2024-11-17 00:31:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:47,251 INFO L225 Difference]: With dead ends: 221 [2024-11-17 00:31:47,252 INFO L226 Difference]: Without dead ends: 221 [2024-11-17 00:31:47,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:31:47,252 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:47,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 81 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-17 00:31:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2024-11-17 00:31:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.0275229357798166) internal successors, (224), 219 states have internal predecessors, (224), 0 states have call successors, (0), 0 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 00:31:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 224 transitions. [2024-11-17 00:31:47,254 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 224 transitions. Word has length 211 [2024-11-17 00:31:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:47,255 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 224 transitions. [2024-11-17 00:31:47,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 224 transitions. [2024-11-17 00:31:47,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-17 00:31:47,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:47,256 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:47,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-17 00:31:47,256 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:47,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash 362932336, now seen corresponding path program 1 times [2024-11-17 00:31:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:47,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147365680] [2024-11-17 00:31:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2024-11-17 00:31:47,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:47,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147365680] [2024-11-17 00:31:47,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147365680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:47,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145513971] [2024-11-17 00:31:47,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:47,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:47,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:47,516 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 00:31:47,517 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 00:31:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:47,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 00:31:47,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2024-11-17 00:31:48,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:31:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2024-11-17 00:31:48,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145513971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:31:48,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:31:48,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-17 00:31:48,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511653548] [2024-11-17 00:31:48,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:31:48,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 00:31:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 00:31:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-17 00:31:48,899 INFO L87 Difference]: Start difference. First operand 220 states and 224 transitions. Second operand has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:49,001 INFO L93 Difference]: Finished difference Result 232 states and 238 transitions. [2024-11-17 00:31:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:31:49,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-17 00:31:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:49,003 INFO L225 Difference]: With dead ends: 232 [2024-11-17 00:31:49,003 INFO L226 Difference]: Without dead ends: 232 [2024-11-17 00:31:49,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:31:49,003 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:49,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 137 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-17 00:31:49,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-11-17 00:31:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 230 states have (on average 1.0347826086956522) internal successors, (238), 231 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 00:31:49,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 238 transitions. [2024-11-17 00:31:49,006 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 238 transitions. Word has length 215 [2024-11-17 00:31:49,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:49,006 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 238 transitions. [2024-11-17 00:31:49,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:49,006 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 238 transitions. [2024-11-17 00:31:49,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-17 00:31:49,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:49,007 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:49,021 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 00:31:49,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:49,212 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:49,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash 76074479, now seen corresponding path program 1 times [2024-11-17 00:31:49,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:49,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008029510] [2024-11-17 00:31:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:49,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-11-17 00:31:49,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008029510] [2024-11-17 00:31:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008029510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:49,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:31:49,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:31:49,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165492885] [2024-11-17 00:31:49,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:49,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:31:49,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:31:49,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:31:49,304 INFO L87 Difference]: Start difference. First operand 232 states and 238 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:49,314 INFO L93 Difference]: Finished difference Result 231 states and 237 transitions. [2024-11-17 00:31:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:31:49,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-17 00:31:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:49,316 INFO L225 Difference]: With dead ends: 231 [2024-11-17 00:31:49,316 INFO L226 Difference]: Without dead ends: 228 [2024-11-17 00:31:49,316 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 00:31:49,316 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:49,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-17 00:31:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-17 00:31:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.0220264317180616) internal successors, (232), 227 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 00:31:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2024-11-17 00:31:49,320 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 221 [2024-11-17 00:31:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:49,320 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2024-11-17 00:31:49,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2024-11-17 00:31:49,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-17 00:31:49,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:31:49,321 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:49,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-17 00:31:49,322 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-17 00:31:49,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:31:49,322 INFO L85 PathProgramCache]: Analyzing trace with hash 420151702, now seen corresponding path program 2 times [2024-11-17 00:31:49,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:31:49,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027963690] [2024-11-17 00:31:49,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:31:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:31:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:31:49,689 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2024-11-17 00:31:49,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:31:49,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027963690] [2024-11-17 00:31:49,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027963690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:31:49,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528503543] [2024-11-17 00:31:49,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:31:49,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:31:49,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:31:49,692 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 00:31:49,692 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 00:31:49,899 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:31:49,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:31:49,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 00:31:49,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:31:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 935 trivial. 0 not checked. [2024-11-17 00:31:50,748 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:31:50,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528503543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:31:50,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:31:50,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 15 [2024-11-17 00:31:50,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391250147] [2024-11-17 00:31:50,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:31:50,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:31:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:31:50,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:31:50,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-17 00:31:50,750 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 00:31:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:31:50,884 INFO L93 Difference]: Finished difference Result 228 states and 232 transitions. [2024-11-17 00:31:50,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:31:50,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 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 227 [2024-11-17 00:31:50,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:31:50,884 INFO L225 Difference]: With dead ends: 228 [2024-11-17 00:31:50,885 INFO L226 Difference]: Without dead ends: 0 [2024-11-17 00:31:50,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-17 00:31:50,885 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:31:50,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 133 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:31:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-17 00:31:50,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-17 00:31:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:31:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-17 00:31:50,886 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 227 [2024-11-17 00:31:50,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:31:50,886 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 00:31:50,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 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 00:31:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-17 00:31:50,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-17 00:31:50,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (16 of 17 remaining) [2024-11-17 00:31:50,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2024-11-17 00:31:50,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2024-11-17 00:31:50,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2024-11-17 00:31:50,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2024-11-17 00:31:50,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2024-11-17 00:31:50,889 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2024-11-17 00:31:50,890 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 17 remaining) [2024-11-17 00:31:50,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-17 00:31:51,094 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,SelfDestructingSolverStorable36 [2024-11-17 00:31:51,097 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:31:51,098 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 00:31:51,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:31:51 BoogieIcfgContainer [2024-11-17 00:31:51,103 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 00:31:51,103 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 00:31:51,103 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 00:31:51,103 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 00:31:51,104 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:31:19" (3/4) ... [2024-11-17 00:31:51,105 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 00:31:51,111 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2024-11-17 00:31:51,111 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-17 00:31:51,112 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-17 00:31:51,183 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 00:31:51,183 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 00:31:51,183 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 00:31:51,183 INFO L158 Benchmark]: Toolchain (without parser) took 32826.76ms. Allocated memory was 209.7MB in the beginning and 836.8MB in the end (delta: 627.0MB). Free memory was 178.8MB in the beginning and 736.6MB in the end (delta: -557.8MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. [2024-11-17 00:31:51,184 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 86.8MB in the beginning and 86.7MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 00:31:51,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.21ms. Allocated memory is still 209.7MB. Free memory was 178.8MB in the beginning and 165.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-17 00:31:51,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.55ms. Allocated memory is still 209.7MB. Free memory was 165.6MB in the beginning and 163.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 00:31:51,184 INFO L158 Benchmark]: Boogie Preprocessor took 31.03ms. Allocated memory is still 209.7MB. Free memory was 163.5MB in the beginning and 161.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 00:31:51,184 INFO L158 Benchmark]: IcfgBuilder took 403.50ms. Allocated memory is still 209.7MB. Free memory was 161.4MB in the beginning and 142.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-17 00:31:51,184 INFO L158 Benchmark]: TraceAbstraction took 32056.73ms. Allocated memory was 209.7MB in the beginning and 836.8MB in the end (delta: 627.0MB). Free memory was 141.5MB in the beginning and 741.9MB in the end (delta: -600.4MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2024-11-17 00:31:51,184 INFO L158 Benchmark]: Witness Printer took 79.84ms. Allocated memory is still 836.8MB. Free memory was 741.9MB in the beginning and 736.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 00:31:51,185 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 86.8MB in the beginning and 86.7MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.21ms. Allocated memory is still 209.7MB. Free memory was 178.8MB in the beginning and 165.6MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.55ms. Allocated memory is still 209.7MB. Free memory was 165.6MB in the beginning and 163.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.03ms. Allocated memory is still 209.7MB. Free memory was 163.5MB in the beginning and 161.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 403.50ms. Allocated memory is still 209.7MB. Free memory was 161.4MB in the beginning and 142.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 32056.73ms. Allocated memory was 209.7MB in the beginning and 836.8MB in the end (delta: 627.0MB). Free memory was 141.5MB in the beginning and 741.9MB in the end (delta: -600.4MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 79.84ms. Allocated memory is still 836.8MB. Free memory was 741.9MB in the beginning and 736.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 43]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 32.0s, OverallIterations: 37, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2264 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2264 mSDsluCounter, 4837 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3563 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3452 IncrementalHoareTripleChecker+Invalid, 3538 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 1274 mSDtfsCounter, 3452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4574 GetRequests, 4147 SyntacticMatches, 8 SemanticMatches, 419 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=35, InterpolantAutomatonStates: 263, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 37 MinimizatonAttempts, 21 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 20.6s InterpolantComputationTime, 6753 NumberOfCodeBlocks, 6252 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 8530 ConstructedInterpolants, 0 QuantifiedInterpolants, 88502 SizeOfPredicates, 27 NumberOfNonLiveVariables, 8744 ConjunctsInSsa, 271 ConjunctsInUnsatCore, 73 InterpolantComputations, 21 PerfectInterpolantSequences, 33758/35000 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-17 00:31:51,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE