./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-examples/standard_strcpy_original-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-examples/standard_strcpy_original-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25419aae3fa6b25817a0bb63109cdb8dd339b767b8ddb876acb37423139730d4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 13:09:48,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 13:09:48,712 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 13:09:48,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 13:09:48,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 13:09:48,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 13:09:48,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 13:09:48,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 13:09:48,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 13:09:48,748 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 13:09:48,749 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 13:09:48,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 13:09:48,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 13:09:48,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 13:09:48,752 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 13:09:48,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 13:09:48,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 13:09:48,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 13:09:48,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 13:09:48,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 13:09:48,754 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 13:09:48,755 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 13:09:48,758 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 13:09:48,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 13:09:48,759 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 13:09:48,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 13:09:48,759 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 13:09:48,759 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 13:09:48,759 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 13:09:48,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 13:09:48,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 13:09:48,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 13:09:48,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 13:09:48,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:09:48,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 13:09:48,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 13:09:48,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 13:09:48,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 13:09:48,762 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 13:09:48,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 13:09:48,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 13:09:48,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 13:09:48,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25419aae3fa6b25817a0bb63109cdb8dd339b767b8ddb876acb37423139730d4 [2024-11-12 13:09:49,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 13:09:49,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 13:09:49,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 13:09:49,069 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 13:09:49,070 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 13:09:49,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_original-1.i [2024-11-12 13:09:50,549 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 13:09:50,728 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 13:09:50,729 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_original-1.i [2024-11-12 13:09:50,740 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbf9a9ac4/6305877ee514481eb8b2ea97710412f3/FLAGafcaa869b [2024-11-12 13:09:51,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbf9a9ac4/6305877ee514481eb8b2ea97710412f3 [2024-11-12 13:09:51,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 13:09:51,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 13:09:51,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 13:09:51,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 13:09:51,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 13:09:51,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785076cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51, skipping insertion in model container [2024-11-12 13:09:51,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 13:09:51,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:09:51,359 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 13:09:51,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:09:51,395 INFO L204 MainTranslator]: Completed translation [2024-11-12 13:09:51,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51 WrapperNode [2024-11-12 13:09:51,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 13:09:51,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 13:09:51,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 13:09:51,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 13:09:51,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,430 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-12 13:09:51,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 13:09:51,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 13:09:51,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 13:09:51,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 13:09:51,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,450 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,476 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-12 13:09:51,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 13:09:51,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 13:09:51,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 13:09:51,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 13:09:51,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (1/1) ... [2024-11-12 13:09:51,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:09:51,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:09:51,533 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) [2024-11-12 13:09:51,537 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 [2024-11-12 13:09:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 13:09:51,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 13:09:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 13:09:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 13:09:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 13:09:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 13:09:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 13:09:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 13:09:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 13:09:51,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 13:09:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 13:09:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 13:09:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 13:09:51,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 13:09:51,652 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 13:09:51,654 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 13:09:51,877 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2024-11-12 13:09:51,878 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 13:09:51,890 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 13:09:51,910 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-12 13:09:51,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:09:51 BoogieIcfgContainer [2024-11-12 13:09:51,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 13:09:51,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 13:09:51,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 13:09:51,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 13:09:51,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:09:51" (1/3) ... [2024-11-12 13:09:51,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66817912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:09:51, skipping insertion in model container [2024-11-12 13:09:51,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:09:51" (2/3) ... [2024-11-12 13:09:51,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66817912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:09:51, skipping insertion in model container [2024-11-12 13:09:51,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:09:51" (3/3) ... [2024-11-12 13:09:51,928 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-1.i [2024-11-12 13:09:51,945 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 13:09:51,946 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-12 13:09:51,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 13:09:51,994 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;@9a3f56d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 13:09:51,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-12 13:09:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 43 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) [2024-11-12 13:09:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-12 13:09:52,002 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:52,003 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-12 13:09:52,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:52,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-12 13:09:52,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:52,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013889171] [2024-11-12 13:09:52,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013889171] [2024-11-12 13:09:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013889171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:09:52,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:09:52,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:09:52,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556022914] [2024-11-12 13:09:52,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:09:52,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:09:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:52,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:09:52,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:09:52,372 INFO L87 Difference]: Start difference. First operand has 44 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 43 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:52,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:52,444 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2024-11-12 13:09:52,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:09:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-12 13:09:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:52,454 INFO L225 Difference]: With dead ends: 38 [2024-11-12 13:09:52,454 INFO L226 Difference]: Without dead ends: 36 [2024-11-12 13:09:52,456 INFO L434 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 [2024-11-12 13:09:52,462 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:52,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:09:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-12 13:09:52,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-12 13:09:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.52) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-12 13:09:52,494 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 4 [2024-11-12 13:09:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:52,495 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-12 13:09:52,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-12 13:09:52,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-12 13:09:52,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:52,495 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-12 13:09:52,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 13:09:52,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:52,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-12 13:09:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863660945] [2024-11-12 13:09:52,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:52,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:52,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:52,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863660945] [2024-11-12 13:09:52,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863660945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:09:52,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:09:52,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:09:52,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003970492] [2024-11-12 13:09:52,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:09:52,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:09:52,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:09:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:09:52,686 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:52,727 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-12 13:09:52,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:09:52,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-12 13:09:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:52,729 INFO L225 Difference]: With dead ends: 40 [2024-11-12 13:09:52,729 INFO L226 Difference]: Without dead ends: 40 [2024-11-12 13:09:52,729 INFO L434 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 [2024-11-12 13:09:52,730 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:52,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 49 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:09:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-12 13:09:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-12 13:09:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 37 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) [2024-11-12 13:09:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-11-12 13:09:52,734 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 4 [2024-11-12 13:09:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:52,735 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-11-12 13:09:52,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-11-12 13:09:52,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-12 13:09:52,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:52,735 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-12 13:09:52,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 13:09:52,736 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:52,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2024-11-12 13:09:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100730584] [2024-11-12 13:09:52,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:52,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:52,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100730584] [2024-11-12 13:09:52,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100730584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:09:52,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739269293] [2024-11-12 13:09:52,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:52,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:52,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:09:52,895 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) [2024-11-12 13:09:52,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 13:09:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:52,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 13:09:52,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:09:53,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-12 13:09:53,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:09:53,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-12 13:09:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:53,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:09:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:53,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739269293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:09:53,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:09:53,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-12 13:09:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091611002] [2024-11-12 13:09:53,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:09:53,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 13:09:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:53,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 13:09:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-12 13:09:53,315 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:53,450 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2024-11-12 13:09:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 13:09:53,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-12 13:09:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:53,452 INFO L225 Difference]: With dead ends: 48 [2024-11-12 13:09:53,452 INFO L226 Difference]: Without dead ends: 48 [2024-11-12 13:09:53,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-12 13:09:53,454 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:53,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 54 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:09:53,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-12 13:09:53,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-12 13:09:53,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 47 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) [2024-11-12 13:09:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2024-11-12 13:09:53,459 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 8 [2024-11-12 13:09:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:53,460 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2024-11-12 13:09:53,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2024-11-12 13:09:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-12 13:09:53,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:53,461 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-12 13:09:53,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 13:09:53,665 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 [2024-11-12 13:09:53,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:53,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash -4646106, now seen corresponding path program 1 times [2024-11-12 13:09:53,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:53,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273643861] [2024-11-12 13:09:53,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:53,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:09:53,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:53,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273643861] [2024-11-12 13:09:53,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273643861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:09:53,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865946244] [2024-11-12 13:09:53,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:53,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:09:53,789 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) [2024-11-12 13:09:53,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 13:09:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:53,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 13:09:53,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:09:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:53,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:09:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:53,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865946244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:09:53,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:09:53,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2024-11-12 13:09:53,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073647836] [2024-11-12 13:09:53,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:09:53,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 13:09:53,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:53,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 13:09:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:09:53,938 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:54,199 INFO L93 Difference]: Finished difference Result 187 states and 218 transitions. [2024-11-12 13:09:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 13:09:54,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-12 13:09:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:54,203 INFO L225 Difference]: With dead ends: 187 [2024-11-12 13:09:54,203 INFO L226 Difference]: Without dead ends: 187 [2024-11-12 13:09:54,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-12 13:09:54,204 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 366 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:54,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 120 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:09:54,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-12 13:09:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 57. [2024-11-12 13:09:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.25) internal successors, (60), 56 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2024-11-12 13:09:54,212 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 13 [2024-11-12 13:09:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:54,212 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2024-11-12 13:09:54,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2024-11-12 13:09:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-12 13:09:54,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:54,214 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2024-11-12 13:09:54,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-12 13:09:54,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-12 13:09:54,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:54,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:54,419 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2024-11-12 13:09:54,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:54,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243445431] [2024-11-12 13:09:54,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:54,698 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:54,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:54,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243445431] [2024-11-12 13:09:54,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243445431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:09:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076379477] [2024-11-12 13:09:54,700 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:09:54,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:54,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:09:54,702 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) [2024-11-12 13:09:54,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 13:09:54,756 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:09:54,756 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:09:54,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 13:09:54,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:09:54,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-12 13:09:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:09:54,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-12 13:09:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:09:54,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 13:09:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076379477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:09:55,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 13:09:55,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2024-11-12 13:09:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176036897] [2024-11-12 13:09:55,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:09:55,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 13:09:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:55,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 13:09:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-12 13:09:55,002 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:55,087 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2024-11-12 13:09:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 13:09:55,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-12 13:09:55,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:55,088 INFO L225 Difference]: With dead ends: 56 [2024-11-12 13:09:55,088 INFO L226 Difference]: Without dead ends: 56 [2024-11-12 13:09:55,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-12 13:09:55,089 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:55,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:09:55,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-12 13:09:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-12 13:09:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:55,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2024-11-12 13:09:55,098 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 20 [2024-11-12 13:09:55,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:55,098 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2024-11-12 13:09:55,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2024-11-12 13:09:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 13:09:55,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:55,101 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:09:55,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 13:09:55,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:55,302 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:55,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1934674516, now seen corresponding path program 1 times [2024-11-12 13:09:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:55,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560540535] [2024-11-12 13:09:55,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-12 13:09:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560540535] [2024-11-12 13:09:55,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560540535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:09:55,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:09:55,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:09:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105406723] [2024-11-12 13:09:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:09:55,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:09:55,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:09:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:09:55,386 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2024-11-12 13:09:55,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:55,404 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-12 13:09:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:09:55,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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 32 [2024-11-12 13:09:55,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:55,405 INFO L225 Difference]: With dead ends: 54 [2024-11-12 13:09:55,405 INFO L226 Difference]: Without dead ends: 54 [2024-11-12 13:09:55,406 INFO L434 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 [2024-11-12 13:09:55,406 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:55,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:09:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-12 13:09:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-12 13:09:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-12 13:09:55,410 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 32 [2024-11-12 13:09:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:55,411 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-12 13:09:55,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 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) [2024-11-12 13:09:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-12 13:09:55,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 13:09:55,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:55,412 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:09:55,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 13:09:55,413 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:55,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1934674515, now seen corresponding path program 1 times [2024-11-12 13:09:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:55,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245391638] [2024-11-12 13:09:55,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:55,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:55,575 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-12 13:09:55,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:55,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245391638] [2024-11-12 13:09:55,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245391638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:09:55,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:09:55,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:09:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457927965] [2024-11-12 13:09:55,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:09:55,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:09:55,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:09:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:09:55,579 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:55,624 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2024-11-12 13:09:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:09:55,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-12 13:09:55,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:55,625 INFO L225 Difference]: With dead ends: 70 [2024-11-12 13:09:55,626 INFO L226 Difference]: Without dead ends: 70 [2024-11-12 13:09:55,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:09:55,626 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:55,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 29 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:09:55,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-12 13:09:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2024-11-12 13:09:55,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2024-11-12 13:09:55,631 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 32 [2024-11-12 13:09:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:55,632 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2024-11-12 13:09:55,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2024-11-12 13:09:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-12 13:09:55,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:55,633 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:09:55,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 13:09:55,633 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:55,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:55,634 INFO L85 PathProgramCache]: Analyzing trace with hash 498629567, now seen corresponding path program 1 times [2024-11-12 13:09:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464695341] [2024-11-12 13:09:55,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:09:55,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:55,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464695341] [2024-11-12 13:09:55,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464695341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:09:55,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300401657] [2024-11-12 13:09:55,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:55,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:55,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:09:55,761 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) [2024-11-12 13:09:55,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 13:09:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:55,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 13:09:55,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:09:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:09:55,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:09:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:09:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300401657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:09:56,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:09:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-12 13:09:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232266543] [2024-11-12 13:09:56,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:09:56,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-12 13:09:56,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-12 13:09:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-12 13:09:56,008 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 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) [2024-11-12 13:09:56,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:56,293 INFO L93 Difference]: Finished difference Result 364 states and 432 transitions. [2024-11-12 13:09:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 13:09:56,294 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 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 34 [2024-11-12 13:09:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:56,296 INFO L225 Difference]: With dead ends: 364 [2024-11-12 13:09:56,296 INFO L226 Difference]: Without dead ends: 364 [2024-11-12 13:09:56,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-12 13:09:56,297 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 654 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:56,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 202 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:09:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-12 13:09:56,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 91. [2024-11-12 13:09:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.1176470588235294) 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) [2024-11-12 13:09:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2024-11-12 13:09:56,307 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 34 [2024-11-12 13:09:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:56,307 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2024-11-12 13:09:56,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 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) [2024-11-12 13:09:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2024-11-12 13:09:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-12 13:09:56,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:56,309 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:09:56,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 13:09:56,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:56,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:56,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:56,511 INFO L85 PathProgramCache]: Analyzing trace with hash -618447913, now seen corresponding path program 2 times [2024-11-12 13:09:56,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:56,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253559437] [2024-11-12 13:09:56,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:56,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:09:56,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:56,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253559437] [2024-11-12 13:09:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253559437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:09:56,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456293832] [2024-11-12 13:09:56,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:09:56,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:56,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:09:56,892 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) [2024-11-12 13:09:56,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 13:09:56,991 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 13:09:56,991 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:09:56,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 13:09:56,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:09:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:09:57,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:09:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:09:57,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456293832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:09:57,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:09:57,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-12 13:09:57,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715957424] [2024-11-12 13:09:57,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:09:57,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-12 13:09:57,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:09:57,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-12 13:09:57,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-12 13:09:57,516 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:09:58,253 INFO L93 Difference]: Finished difference Result 748 states and 896 transitions. [2024-11-12 13:09:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-12 13:09:58,253 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-12 13:09:58,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:09:58,256 INFO L225 Difference]: With dead ends: 748 [2024-11-12 13:09:58,256 INFO L226 Difference]: Without dead ends: 748 [2024-11-12 13:09:58,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-12 13:09:58,258 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 1302 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 13:09:58,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 428 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 13:09:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-11-12 13:09:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 155. [2024-11-12 13:09:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 149 states have (on average 1.0671140939597314) 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) [2024-11-12 13:09:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 159 transitions. [2024-11-12 13:09:58,281 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 159 transitions. Word has length 66 [2024-11-12 13:09:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:09:58,282 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 159 transitions. [2024-11-12 13:09:58,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.909090909090909) internal successors, (129), 33 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:09:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 159 transitions. [2024-11-12 13:09:58,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-12 13:09:58,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:09:58,290 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:09:58,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 13:09:58,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:58,497 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:09:58,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:09:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1529191431, now seen corresponding path program 3 times [2024-11-12 13:09:58,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:09:58,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006010790] [2024-11-12 13:09:58,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:09:58,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:09:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:09:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:09:59,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:09:59,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006010790] [2024-11-12 13:09:59,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006010790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:09:59,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427738076] [2024-11-12 13:09:59,660 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 13:09:59,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:09:59,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:09:59,662 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) [2024-11-12 13:09:59,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 13:09:59,759 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 13:09:59,759 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:09:59,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 13:09:59,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:10:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 88 proven. 1 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-11-12 13:10:00,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:10:00,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-12 13:10:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-11-12 13:10:00,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427738076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:10:00,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:10:00,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 7, 7] total 45 [2024-11-12 13:10:00,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014907151] [2024-11-12 13:10:00,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:10:00,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-12 13:10:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:10:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-12 13:10:00,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=714, Invalid=1266, Unknown=0, NotChecked=0, Total=1980 [2024-11-12 13:10:00,498 INFO L87 Difference]: Start difference. First operand 155 states and 159 transitions. Second operand has 45 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:02,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:10:02,783 INFO L93 Difference]: Finished difference Result 801 states and 900 transitions. [2024-11-12 13:10:02,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-12 13:10:02,783 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 0 states have call successors, (0), 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 130 [2024-11-12 13:10:02,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:10:02,787 INFO L225 Difference]: With dead ends: 801 [2024-11-12 13:10:02,787 INFO L226 Difference]: Without dead ends: 801 [2024-11-12 13:10:02,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2133, Invalid=3873, Unknown=0, NotChecked=0, Total=6006 [2024-11-12 13:10:02,790 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 5900 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5900 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 741 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 13:10:02,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5900 Valid, 446 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [741 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 13:10:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-11-12 13:10:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 538. [2024-11-12 13:10:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 532 states have (on average 1.3120300751879699) internal successors, (698), 537 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:02,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 698 transitions. [2024-11-12 13:10:02,804 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 698 transitions. Word has length 130 [2024-11-12 13:10:02,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:10:02,804 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 698 transitions. [2024-11-12 13:10:02,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.6) internal successors, (162), 45 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 698 transitions. [2024-11-12 13:10:02,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-12 13:10:02,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:10:02,807 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:10:02,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 13:10:03,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:10:03,008 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:10:03,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:10:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash 730106369, now seen corresponding path program 1 times [2024-11-12 13:10:03,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:10:03,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282996529] [2024-11-12 13:10:03,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:10:03,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:10:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:10:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:10:03,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:10:03,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282996529] [2024-11-12 13:10:03,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282996529] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:10:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852491192] [2024-11-12 13:10:03,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:10:03,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:10:03,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:10:04,001 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) [2024-11-12 13:10:04,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 13:10:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:10:04,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-12 13:10:04,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:10:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:10:04,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:10:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:10:05,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852491192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:10:05,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:10:05,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 67 [2024-11-12 13:10:05,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950184729] [2024-11-12 13:10:05,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:10:05,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-12 13:10:05,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:10:05,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-12 13:10:05,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2024-11-12 13:10:05,829 INFO L87 Difference]: Start difference. First operand 538 states and 698 transitions. Second operand has 67 states, 67 states have (on average 3.970149253731343) internal successors, (266), 67 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:10:08,118 INFO L93 Difference]: Finished difference Result 1564 states and 1818 transitions. [2024-11-12 13:10:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-12 13:10:08,119 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.970149253731343) internal successors, (266), 67 states have internal predecessors, (266), 0 states have call successors, (0), 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 135 [2024-11-12 13:10:08,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:10:08,123 INFO L225 Difference]: With dead ends: 1564 [2024-11-12 13:10:08,124 INFO L226 Difference]: Without dead ends: 1564 [2024-11-12 13:10:08,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2024-11-12 13:10:08,125 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 5694 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 1018 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5694 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1018 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:10:08,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5694 Valid, 850 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1018 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-12 13:10:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2024-11-12 13:10:08,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 670. [2024-11-12 13:10:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 664 states have (on average 1.25) internal successors, (830), 669 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 830 transitions. [2024-11-12 13:10:08,142 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 830 transitions. Word has length 135 [2024-11-12 13:10:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:10:08,142 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 830 transitions. [2024-11-12 13:10:08,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.970149253731343) internal successors, (266), 67 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 830 transitions. [2024-11-12 13:10:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-12 13:10:08,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:10:08,148 INFO L218 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:10:08,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 13:10:08,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:10:08,354 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:10:08,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:10:08,354 INFO L85 PathProgramCache]: Analyzing trace with hash -156263874, now seen corresponding path program 2 times [2024-11-12 13:10:08,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:10:08,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644072305] [2024-11-12 13:10:08,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:10:08,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:10:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:10:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:10:11,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:10:11,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644072305] [2024-11-12 13:10:11,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644072305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:10:11,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422478342] [2024-11-12 13:10:11,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:10:11,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:10:11,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:10:11,553 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) [2024-11-12 13:10:11,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 13:10:11,672 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 13:10:11,672 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:10:11,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 13:10:11,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:10:13,219 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#src~0#1.base_27| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int) (|v_ULTIMATE.start_main_~#dst~0#1.base_18| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#src~0#1.base_27|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#dst~0#1.base_18|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#src~0#1.base_27| 0) |v_ULTIMATE.start_main_~#dst~0#1.base_18| 0)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#src~0#1.base_27| v_DerPreprocessor_1) |v_ULTIMATE.start_main_~#dst~0#1.base_18| v_DerPreprocessor_2) |v_ULTIMATE.start_main_~#src~0#1.base_27|) v_DerPreprocessor_1))) is different from true [2024-11-12 13:10:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2024-11-12 13:10:13,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 13:10:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422478342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:10:13,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 13:10:13,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [67] total 70 [2024-11-12 13:10:13,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046700076] [2024-11-12 13:10:13,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:10:13,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 13:10:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:10:13,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 13:10:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2219, Invalid=2476, Unknown=1, NotChecked=134, Total=4830 [2024-11-12 13:10:13,226 INFO L87 Difference]: Start difference. First operand 670 states and 830 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:13,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:10:13,300 INFO L93 Difference]: Finished difference Result 669 states and 829 transitions. [2024-11-12 13:10:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:10:13,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2024-11-12 13:10:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:10:13,303 INFO L225 Difference]: With dead ends: 669 [2024-11-12 13:10:13,303 INFO L226 Difference]: Without dead ends: 667 [2024-11-12 13:10:13,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2219, Invalid=2476, Unknown=1, NotChecked=134, Total=4830 [2024-11-12 13:10:13,305 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:10:13,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 20 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 31 Unchecked, 0.0s Time] [2024-11-12 13:10:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-12 13:10:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2024-11-12 13:10:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 662 states have (on average 1.200906344410876) internal successors, (795), 666 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 795 transitions. [2024-11-12 13:10:13,316 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 795 transitions. Word has length 267 [2024-11-12 13:10:13,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:10:13,316 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 795 transitions. [2024-11-12 13:10:13,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:13,317 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 795 transitions. [2024-11-12 13:10:13,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-12 13:10:13,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:10:13,319 INFO L218 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:10:13,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 13:10:13,523 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,SelfDestructingSolverStorable11 [2024-11-12 13:10:13,524 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:10:13,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:10:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1298464006, now seen corresponding path program 1 times [2024-11-12 13:10:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:10:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650097975] [2024-11-12 13:10:13,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:10:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:10:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:10:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8132 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 13:10:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:10:16,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650097975] [2024-11-12 13:10:16,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650097975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:10:16,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336847619] [2024-11-12 13:10:16,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:10:16,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:10:16,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:10:16,863 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) [2024-11-12 13:10:16,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 13:10:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:10:17,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-12 13:10:17,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:10:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8132 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 13:10:17,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:10:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8132 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 13:10:21,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336847619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:10:21,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:10:21,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 133 [2024-11-12 13:10:21,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60990895] [2024-11-12 13:10:21,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:10:21,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2024-11-12 13:10:21,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:10:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2024-11-12 13:10:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2024-11-12 13:10:21,857 INFO L87 Difference]: Start difference. First operand 667 states and 795 transitions. Second operand has 133 states, 133 states have (on average 3.9774436090225564) internal successors, (529), 133 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:10:37,460 INFO L93 Difference]: Finished difference Result 2755 states and 3339 transitions. [2024-11-12 13:10:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-12 13:10:37,461 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 3.9774436090225564) internal successors, (529), 133 states have internal predecessors, (529), 0 states have call successors, (0), 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 269 [2024-11-12 13:10:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:10:37,469 INFO L225 Difference]: With dead ends: 2755 [2024-11-12 13:10:37,469 INFO L226 Difference]: Without dead ends: 2755 [2024-11-12 13:10:37,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=8778, Invalid=8778, Unknown=0, NotChecked=0, Total=17556 [2024-11-12 13:10:37,473 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 7851 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 1438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7851 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1438 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-12 13:10:37,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7851 Valid, 1328 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1438 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-12 13:10:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2024-11-12 13:10:37,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 931. [2024-11-12 13:10:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 926 states have (on average 1.1436285097192225) internal successors, (1059), 930 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1059 transitions. [2024-11-12 13:10:37,495 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1059 transitions. Word has length 269 [2024-11-12 13:10:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:10:37,496 INFO L471 AbstractCegarLoop]: Abstraction has 931 states and 1059 transitions. [2024-11-12 13:10:37,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 3.9774436090225564) internal successors, (529), 133 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:10:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1059 transitions. [2024-11-12 13:10:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-12 13:10:37,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:10:37,504 INFO L218 NwaCegarLoop]: trace histogram [130, 130, 130, 130, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:10:37,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 13:10:37,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-12 13:10:37,705 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-11-12 13:10:37,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:10:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash 470641012, now seen corresponding path program 2 times [2024-11-12 13:10:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:10:37,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288397411] [2024-11-12 13:10:37,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:10:37,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:10:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:10:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 33674 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 13:10:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:10:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288397411] [2024-11-12 13:10:48,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288397411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:10:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88509187] [2024-11-12 13:10:48,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 13:10:48,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:10:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:10:48,571 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) [2024-11-12 13:10:48,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 13:10:48,743 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 13:10:48,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 13:10:48,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 13:10:48,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:10:48,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-12 13:10:48,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-12 13:10:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 33674 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33671 trivial. 0 not checked. [2024-11-12 13:10:53,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:11:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 33674 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 33671 trivial. 0 not checked. [2024-11-12 13:11:01,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88509187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:11:01,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:11:01,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 3, 3] total 137 [2024-11-12 13:11:01,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004455187] [2024-11-12 13:11:01,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:11:01,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-12 13:11:01,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:11:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-12 13:11:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8788, Invalid=9844, Unknown=0, NotChecked=0, Total=18632 [2024-11-12 13:11:01,934 INFO L87 Difference]: Start difference. First operand 931 states and 1059 transitions. Second operand has 137 states, 137 states have (on average 4.102189781021898) internal successors, (562), 137 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:11:03,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]