./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-regression/test23-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-regression/test23-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:37:43,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:37:43,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 18:37:43,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:37:43,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:37:43,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:37:43,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:37:43,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:37:43,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 18:37:43,397 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 18:37:43,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:37:43,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:37:43,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:37:43,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:37:43,399 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:37:43,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:37:43,399 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 18:37:43,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:37:43,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 18:37:43,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:37:43,401 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 18:37:43,403 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 18:37:43,404 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 18:37:43,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:37:43,404 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 18:37:43,405 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:37:43,405 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:37:43,405 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 18:37:43,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:37:43,406 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:37:43,406 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:37:43,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 18:37:43,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:37:43,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:37:43,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:37:43,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:37:43,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:37:43,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:37:43,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:37:43,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:37:43,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:37:43,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:37:43,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 [2024-11-22 18:37:43,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:37:43,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:37:43,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:37:43,704 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:37:43,704 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:37:43,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test23-2.c [2024-11-22 18:37:45,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:37:45,314 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:37:45,314 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-2.c [2024-11-22 18:37:45,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b846d8aa0/d5cdb23b198e462595a41e0284068a5d/FLAGefcc46bd6 [2024-11-22 18:37:45,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b846d8aa0/d5cdb23b198e462595a41e0284068a5d [2024-11-22 18:37:45,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:37:45,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:37:45,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:37:45,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:37:45,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:37:45,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:37:45" (1/1) ... [2024-11-22 18:37:45,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d398593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:45, skipping insertion in model container [2024-11-22 18:37:45,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:37:45" (1/1) ... [2024-11-22 18:37:45,738 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:37:45,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:37:45,950 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:37:45,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:37:46,005 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:37:46,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46 WrapperNode [2024-11-22 18:37:46,006 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:37:46,007 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:37:46,007 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:37:46,007 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:37:46,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,024 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,048 INFO L138 Inliner]: procedures = 16, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 114 [2024-11-22 18:37:46,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:37:46,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:37:46,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:37:46,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:37:46,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,065 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,081 INFO L175 MemorySlicer]: Split 46 memory accesses to 2 slices as follows [2, 44]. 96 percent of accesses are in the largest equivalence class. The 38 initializations are split as follows [2, 36]. The 5 writes are split as follows [0, 5]. [2024-11-22 18:37:46,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:37:46,097 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:37:46,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:37:46,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:37:46,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (1/1) ... [2024-11-22 18:37:46,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:37:46,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:37:46,127 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) [2024-11-22 18:37:46,129 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 [2024-11-22 18:37:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 18:37:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 18:37:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 18:37:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 18:37:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 18:37:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2024-11-22 18:37:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2024-11-22 18:37:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:37:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:37:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 18:37:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 18:37:46,240 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:37:46,242 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:37:46,511 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-11-22 18:37:46,511 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:37:46,525 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:37:46,526 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 18:37:46,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:37:46 BoogieIcfgContainer [2024-11-22 18:37:46,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:37:46,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:37:46,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:37:46,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:37:46,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:37:45" (1/3) ... [2024-11-22 18:37:46,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c44046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:37:46, skipping insertion in model container [2024-11-22 18:37:46,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:37:46" (2/3) ... [2024-11-22 18:37:46,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c44046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:37:46, skipping insertion in model container [2024-11-22 18:37:46,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:37:46" (3/3) ... [2024-11-22 18:37:46,533 INFO L112 eAbstractionObserver]: Analyzing ICFG test23-2.c [2024-11-22 18:37:46,546 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:37:46,546 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-11-22 18:37:46,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:37:46,588 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;@16799c7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:37:46,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-22 18:37:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-22 18:37:46,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:46,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-22 18:37:46,599 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:46,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 31843, now seen corresponding path program 1 times [2024-11-22 18:37:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:46,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331401311] [2024-11-22 18:37:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:46,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:46,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:37:46,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:46,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331401311] [2024-11-22 18:37:46,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331401311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:46,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:46,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:37:46,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052050577] [2024-11-22 18:37:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:46,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:37:46,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:46,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:37:46,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:46,941 INFO L87 Difference]: Start difference. First operand has 55 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 51 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:37:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:46,991 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2024-11-22 18:37:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:37:46,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-22 18:37:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:46,998 INFO L225 Difference]: With dead ends: 52 [2024-11-22 18:37:46,998 INFO L226 Difference]: Without dead ends: 50 [2024-11-22 18:37:47,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:47,002 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:47,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:37:47,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-22 18:37:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-22 18:37:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 46 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-11-22 18:37:47,032 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 3 [2024-11-22 18:37:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:47,032 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-11-22 18:37:47,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:37:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-11-22 18:37:47,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-22 18:37:47,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:47,034 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-22 18:37:47,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:37:47,035 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:47,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 31844, now seen corresponding path program 1 times [2024-11-22 18:37:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:47,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510080765] [2024-11-22 18:37:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:37:47,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:47,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510080765] [2024-11-22 18:37:47,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510080765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:47,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:47,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:37:47,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086096323] [2024-11-22 18:37:47,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:47,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:37:47,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:37:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:47,150 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:37:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:47,178 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2024-11-22 18:37:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:37:47,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-22 18:37:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:47,179 INFO L225 Difference]: With dead ends: 48 [2024-11-22 18:37:47,180 INFO L226 Difference]: Without dead ends: 48 [2024-11-22 18:37:47,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:47,181 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 35 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 [2024-11-22 18:37:47,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 35 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:37:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-22 18:37:47,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-22 18:37:47,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 44 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:47,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-22 18:37:47,189 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 3 [2024-11-22 18:37:47,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:47,189 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-22 18:37:47,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:37:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-22 18:37:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:37:47,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:47,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:47,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:37:47,191 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:47,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash -657768027, now seen corresponding path program 1 times [2024-11-22 18:37:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:47,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272354418] [2024-11-22 18:37:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:37:47,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:47,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272354418] [2024-11-22 18:37:47,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272354418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:37:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015944699] [2024-11-22 18:37:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:47,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:37:47,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:37:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:47,307 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:37:47,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:47,345 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2024-11-22 18:37:47,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:37:47,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 18:37:47,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:47,347 INFO L225 Difference]: With dead ends: 46 [2024-11-22 18:37:47,347 INFO L226 Difference]: Without dead ends: 46 [2024-11-22 18:37:47,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:47,348 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:47,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 31 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:37:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-22 18:37:47,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-22 18:37:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 42 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2024-11-22 18:37:47,359 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 7 [2024-11-22 18:37:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:47,359 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2024-11-22 18:37:47,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:37:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2024-11-22 18:37:47,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-22 18:37:47,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:47,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:47,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 18:37:47,361 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:47,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -657768026, now seen corresponding path program 1 times [2024-11-22 18:37:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:47,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116893814] [2024-11-22 18:37:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:37:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116893814] [2024-11-22 18:37:47,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116893814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:47,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:47,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:37:47,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074542038] [2024-11-22 18:37:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:47,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:37:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:37:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:47,509 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:37:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:47,540 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2024-11-22 18:37:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:37:47,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-22 18:37:47,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:47,542 INFO L225 Difference]: With dead ends: 44 [2024-11-22 18:37:47,542 INFO L226 Difference]: Without dead ends: 44 [2024-11-22 18:37:47,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:47,545 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:47,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 33 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:37:47,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-22 18:37:47,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-22 18:37:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 40 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2024-11-22 18:37:47,555 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 7 [2024-11-22 18:37:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:47,555 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2024-11-22 18:37:47,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:37:47,556 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2024-11-22 18:37:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 18:37:47,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:47,558 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:47,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 18:37:47,559 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:47,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash 166237900, now seen corresponding path program 1 times [2024-11-22 18:37:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119847265] [2024-11-22 18:37:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:47,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:37:48,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:48,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119847265] [2024-11-22 18:37:48,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119847265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:48,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:48,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:37:48,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028705457] [2024-11-22 18:37:48,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:48,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:37:48,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:37:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:37:48,063 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:48,283 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2024-11-22 18:37:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:37:48,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-22 18:37:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:48,285 INFO L225 Difference]: With dead ends: 42 [2024-11-22 18:37:48,285 INFO L226 Difference]: Without dead ends: 42 [2024-11-22 18:37:48,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:37:48,286 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:48,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 99 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:37:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-22 18:37:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-22 18:37:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 38 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-22 18:37:48,291 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 23 [2024-11-22 18:37:48,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:48,292 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-22 18:37:48,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-22 18:37:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 18:37:48,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:48,293 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:48,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 18:37:48,293 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:48,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash 166237899, now seen corresponding path program 1 times [2024-11-22 18:37:48,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:48,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418601518] [2024-11-22 18:37:48,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:37:48,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:48,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418601518] [2024-11-22 18:37:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418601518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:37:48,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289542051] [2024-11-22 18:37:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:48,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:37:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:37:48,484 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) [2024-11-22 18:37:48,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:37:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:48,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-22 18:37:48,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:37:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:37:48,981 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:37:48,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289542051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:48,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:37:48,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 13 [2024-11-22 18:37:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004941751] [2024-11-22 18:37:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:48,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:37:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:48,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:37:48,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:37:48,983 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:49,086 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2024-11-22 18:37:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:37:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-22 18:37:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:49,087 INFO L225 Difference]: With dead ends: 40 [2024-11-22 18:37:49,088 INFO L226 Difference]: Without dead ends: 40 [2024-11-22 18:37:49,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-22 18:37:49,089 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:49,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 79 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:37:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-22 18:37:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-22 18:37:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 36 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-11-22 18:37:49,097 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 23 [2024-11-22 18:37:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:49,097 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-11-22 18:37:49,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,099 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-11-22 18:37:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 18:37:49,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:49,100 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:49,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 18:37:49,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 18:37:49,305 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:49,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash 858444353, now seen corresponding path program 1 times [2024-11-22 18:37:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:49,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137046173] [2024-11-22 18:37:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:37:49,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:49,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137046173] [2024-11-22 18:37:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137046173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:49,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:49,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:37:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277349637] [2024-11-22 18:37:49,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:49,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:37:49,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:37:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:49,349 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:49,373 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2024-11-22 18:37:49,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:37:49,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-22 18:37:49,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:49,374 INFO L225 Difference]: With dead ends: 39 [2024-11-22 18:37:49,374 INFO L226 Difference]: Without dead ends: 37 [2024-11-22 18:37:49,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:37:49,375 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:49,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 33 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:37:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-22 18:37:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-22 18:37:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 33 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-11-22 18:37:49,381 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 24 [2024-11-22 18:37:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:49,382 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-11-22 18:37:49,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-11-22 18:37:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 18:37:49,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:49,383 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:49,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 18:37:49,383 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:49,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:49,384 INFO L85 PathProgramCache]: Analyzing trace with hash 584820305, now seen corresponding path program 1 times [2024-11-22 18:37:49,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:49,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686286277] [2024-11-22 18:37:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:37:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686286277] [2024-11-22 18:37:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686286277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:49,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:37:49,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680438371] [2024-11-22 18:37:49,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:49,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:37:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:49,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:37:49,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:37:49,475 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:49,508 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-11-22 18:37:49,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:37:49,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-22 18:37:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:49,509 INFO L225 Difference]: With dead ends: 36 [2024-11-22 18:37:49,509 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 18:37:49,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:37:49,510 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:49,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:37:49,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 18:37:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-22 18:37:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 32 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-22 18:37:49,513 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 27 [2024-11-22 18:37:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:49,513 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-22 18:37:49,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-22 18:37:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 18:37:49,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:49,514 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:49,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 18:37:49,514 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:49,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 584820306, now seen corresponding path program 1 times [2024-11-22 18:37:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:49,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757177456] [2024-11-22 18:37:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:49,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:37:49,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:49,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757177456] [2024-11-22 18:37:49,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757177456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:49,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:49,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:37:49,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909276759] [2024-11-22 18:37:49,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:49,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:37:49,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:37:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:37:49,692 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:49,730 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2024-11-22 18:37:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:37:49,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-22 18:37:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:49,731 INFO L225 Difference]: With dead ends: 35 [2024-11-22 18:37:49,731 INFO L226 Difference]: Without dead ends: 35 [2024-11-22 18:37:49,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:37:49,732 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 14 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:49,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:37:49,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-22 18:37:49,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-22 18:37:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.103448275862069) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2024-11-22 18:37:49,735 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 27 [2024-11-22 18:37:49,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:49,735 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2024-11-22 18:37:49,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,735 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2024-11-22 18:37:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 18:37:49,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:49,736 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:49,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 18:37:49,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:49,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:49,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1994370753, now seen corresponding path program 1 times [2024-11-22 18:37:49,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378573621] [2024-11-22 18:37:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:37:49,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:49,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378573621] [2024-11-22 18:37:49,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378573621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:49,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:49,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:37:49,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761085909] [2024-11-22 18:37:49,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:49,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:37:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:37:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:37:49,843 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:49,875 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-22 18:37:49,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:37:49,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-22 18:37:49,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:49,876 INFO L225 Difference]: With dead ends: 34 [2024-11-22 18:37:49,876 INFO L226 Difference]: Without dead ends: 34 [2024-11-22 18:37:49,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:37:49,877 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:49,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:37:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-22 18:37:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-22 18:37:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:49,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2024-11-22 18:37:49,883 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 30 [2024-11-22 18:37:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:49,883 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2024-11-22 18:37:49,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:49,883 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2024-11-22 18:37:49,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 18:37:49,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:49,884 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:49,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 18:37:49,884 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:49,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:49,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1994370754, now seen corresponding path program 1 times [2024-11-22 18:37:49,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:49,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077419116] [2024-11-22 18:37:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:37:51,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:51,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077419116] [2024-11-22 18:37:51,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077419116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:37:51,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:37:51,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 18:37:51,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077715157] [2024-11-22 18:37:51,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:37:51,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 18:37:51,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:51,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 18:37:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:37:51,595 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:51,959 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2024-11-22 18:37:51,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 18:37:51,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-22 18:37:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:51,961 INFO L225 Difference]: With dead ends: 38 [2024-11-22 18:37:51,961 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 18:37:51,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-11-22 18:37:51,962 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:51,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 165 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:37:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 18:37:51,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-22 18:37:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2024-11-22 18:37:51,968 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 30 [2024-11-22 18:37:51,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:51,968 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2024-11-22 18:37:51,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:37:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2024-11-22 18:37:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 18:37:51,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:51,969 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:51,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 18:37:51,970 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:51,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1036392969, now seen corresponding path program 1 times [2024-11-22 18:37:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46199988] [2024-11-22 18:37:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:37:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46199988] [2024-11-22 18:37:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46199988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:37:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953366255] [2024-11-22 18:37:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:37:53,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:37:53,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:37:53,340 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) [2024-11-22 18:37:53,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:37:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:37:53,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 18:37:53,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:37:53,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-22 18:37:53,757 INFO L349 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2024-11-22 18:37:53,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 25 [2024-11-22 18:37:53,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:37:53,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:37:54,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-22 18:37:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:37:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953366255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:37:54,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:37:54,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 29 [2024-11-22 18:37:54,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473624418] [2024-11-22 18:37:54,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:37:54,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 18:37:54,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:54,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 18:37:54,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2024-11-22 18:37:54,037 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 18:37:54,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:54,880 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2024-11-22 18:37:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 18:37:54,881 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-22 18:37:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:54,882 INFO L225 Difference]: With dead ends: 42 [2024-11-22 18:37:54,882 INFO L226 Difference]: Without dead ends: 42 [2024-11-22 18:37:54,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=197, Invalid=1695, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 18:37:54,884 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:54,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 360 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:37:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-22 18:37:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-22 18:37:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-22 18:37:54,889 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 32 [2024-11-22 18:37:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:54,890 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-22 18:37:54,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 28 states have internal predecessors, (60), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 18:37:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-22 18:37:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-22 18:37:54,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:54,891 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:54,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 18:37:55,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 18:37:55,092 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:55,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash 426039646, now seen corresponding path program 2 times [2024-11-22 18:37:55,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:55,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8511516] [2024-11-22 18:37:55,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:37:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:55,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:37:55,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:37:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:37:56,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:37:56,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8511516] [2024-11-22 18:37:56,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8511516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:37:56,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074467360] [2024-11-22 18:37:56,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:37:56,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:37:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:37:56,341 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) [2024-11-22 18:37:56,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:37:56,434 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:37:56,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:37:56,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 18:37:56,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:37:56,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-22 18:37:56,855 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:37:56,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2024-11-22 18:37:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:37:56,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:37:57,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2024-11-22 18:37:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:37:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074467360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:37:57,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:37:57,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 37 [2024-11-22 18:37:57,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235725063] [2024-11-22 18:37:57,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:37:57,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-22 18:37:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:37:57,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-22 18:37:57,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 18:37:57,295 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 18:37:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:37:58,735 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2024-11-22 18:37:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 18:37:58,736 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2024-11-22 18:37:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:37:58,737 INFO L225 Difference]: With dead ends: 54 [2024-11-22 18:37:58,738 INFO L226 Difference]: Without dead ends: 54 [2024-11-22 18:37:58,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=540, Invalid=3492, Unknown=0, NotChecked=0, Total=4032 [2024-11-22 18:37:58,739 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 50 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:37:58,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 374 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:37:58,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-22 18:37:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-22 18:37:58,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:37:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-11-22 18:37:58,746 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 38 [2024-11-22 18:37:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:37:58,747 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-11-22 18:37:58,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 18:37:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-11-22 18:37:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-22 18:37:58,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:37:58,748 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:37:58,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 18:37:58,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:37:58,953 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:37:58,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:37:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash -282891064, now seen corresponding path program 3 times [2024-11-22 18:37:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:37:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439375300] [2024-11-22 18:37:58,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:37:58,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:37:59,021 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 18:37:59,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:38:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-22 18:38:00,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:00,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439375300] [2024-11-22 18:38:00,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439375300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:00,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609003380] [2024-11-22 18:38:00,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 18:38:00,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:00,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:00,318 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) [2024-11-22 18:38:00,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 18:38:00,419 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 18:38:00,419 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:38:00,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 18:38:00,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:00,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-22 18:38:00,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:00,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 111 treesize of output 80 [2024-11-22 18:38:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 18:38:01,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:01,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:01,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 92 [2024-11-22 18:38:04,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 369 [2024-11-22 18:38:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-22 18:38:04,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609003380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:04,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:04,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 27 [2024-11-22 18:38:04,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408134127] [2024-11-22 18:38:04,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:04,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 18:38:04,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 18:38:04,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2024-11-22 18:38:04,419 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 28 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 18:38:05,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:05,125 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2024-11-22 18:38:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 18:38:05,125 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-22 18:38:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:05,126 INFO L225 Difference]: With dead ends: 53 [2024-11-22 18:38:05,126 INFO L226 Difference]: Without dead ends: 53 [2024-11-22 18:38:05,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=201, Invalid=1359, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 18:38:05,127 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:05,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 307 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:38:05,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-22 18:38:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-22 18:38:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2024-11-22 18:38:05,130 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50 [2024-11-22 18:38:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:05,130 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2024-11-22 18:38:05,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 18:38:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2024-11-22 18:38:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-22 18:38:05,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:05,131 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:05,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 18:38:05,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:05,336 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:38:05,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1354850793, now seen corresponding path program 1 times [2024-11-22 18:38:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818224792] [2024-11-22 18:38:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:38:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818224792] [2024-11-22 18:38:08,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818224792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006700736] [2024-11-22 18:38:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:08,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:08,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:08,216 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) [2024-11-22 18:38:08,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 18:38:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:08,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-22 18:38:08,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:08,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-22 18:38:09,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2024-11-22 18:38:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:09,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:10,211 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-22 18:38:10,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 1 [2024-11-22 18:38:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006700736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:10,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:10,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 23] total 65 [2024-11-22 18:38:10,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82080231] [2024-11-22 18:38:10,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:10,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-22 18:38:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-22 18:38:10,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=494, Invalid=3666, Unknown=0, NotChecked=0, Total=4160 [2024-11-22 18:38:10,221 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 65 states, 65 states have (on average 1.8923076923076922) internal successors, (123), 64 states have internal predecessors, (123), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 18:38:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:15,479 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2024-11-22 18:38:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-22 18:38:15,480 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.8923076923076922) internal successors, (123), 64 states have internal predecessors, (123), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-22 18:38:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:15,480 INFO L225 Difference]: With dead ends: 93 [2024-11-22 18:38:15,480 INFO L226 Difference]: Without dead ends: 77 [2024-11-22 18:38:15,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4402 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2777, Invalid=14253, Unknown=0, NotChecked=0, Total=17030 [2024-11-22 18:38:15,486 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 312 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:15,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 507 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 18:38:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-22 18:38:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-22 18:38:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:15,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-11-22 18:38:15,490 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 55 [2024-11-22 18:38:15,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:15,491 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-11-22 18:38:15,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.8923076923076922) internal successors, (123), 64 states have internal predecessors, (123), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 18:38:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-11-22 18:38:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 18:38:15,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:15,492 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:15,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 18:38:15,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 18:38:15,693 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-11-22 18:38:15,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1886558013, now seen corresponding path program 2 times [2024-11-22 18:38:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:15,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203752682] [2024-11-22 18:38:15,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:38:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:15,776 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:38:15,777 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:38:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 486 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:38:18,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:18,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203752682] [2024-11-22 18:38:18,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203752682] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:18,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917677715] [2024-11-22 18:38:18,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 18:38:18,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:18,885 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) [2024-11-22 18:38:18,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 18:38:19,073 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 18:38:19,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 18:38:19,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-22 18:38:19,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:19,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-22 18:38:20,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:20,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2024-11-22 18:38:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 485 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:20,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:21,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-11-22 18:38:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 485 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:21,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917677715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:21,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:21,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 29, 29] total 79 [2024-11-22 18:38:21,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737160330] [2024-11-22 18:38:21,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:21,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-22 18:38:21,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-22 18:38:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1018, Invalid=5144, Unknown=0, NotChecked=0, Total=6162 [2024-11-22 18:38:21,398 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 79 states, 78 states have (on average 2.1666666666666665) internal successors, (169), 78 states have internal predecessors, (169), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 18:38:22,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:22,554 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2024-11-22 18:38:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 18:38:22,554 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 2.1666666666666665) internal successors, (169), 78 states have internal predecessors, (169), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 79 [2024-11-22 18:38:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:22,555 INFO L225 Difference]: With dead ends: 45 [2024-11-22 18:38:22,555 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 18:38:22,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 11 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4293 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1515, Invalid=7991, Unknown=0, NotChecked=0, Total=9506 [2024-11-22 18:38:22,559 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:22,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 186 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:38:22,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 18:38:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 18:38:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 18:38:22,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 18:38:22,561 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2024-11-22 18:38:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:22,561 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 18:38:22,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 2.1666666666666665) internal successors, (169), 78 states have internal predecessors, (169), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-22 18:38:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 18:38:22,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 18:38:22,564 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2024-11-22 18:38:22,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2024-11-22 18:38:22,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2024-11-22 18:38:22,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2024-11-22 18:38:22,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2024-11-22 18:38:22,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2024-11-22 18:38:22,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2024-11-22 18:38:22,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2024-11-22 18:38:22,565 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2024-11-22 18:38:22,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2024-11-22 18:38:22,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2024-11-22 18:38:22,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2024-11-22 18:38:22,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2024-11-22 18:38:22,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2024-11-22 18:38:22,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2024-11-22 18:38:22,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2024-11-22 18:38:22,568 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (1 of 18 remaining) [2024-11-22 18:38:22,569 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (0 of 18 remaining) [2024-11-22 18:38:22,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 18:38:22,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 18:38:22,772 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:22,774 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 18:38:22,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 06:38:22 BoogieIcfgContainer [2024-11-22 18:38:22,776 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 18:38:22,777 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 18:38:22,777 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 18:38:22,777 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 18:38:22,777 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:37:46" (3/4) ... [2024-11-22 18:38:22,779 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 18:38:22,783 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2024-11-22 18:38:22,788 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-22 18:38:22,788 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-22 18:38:22,788 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 18:38:22,788 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 18:38:22,884 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 18:38:22,886 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 18:38:22,886 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 18:38:22,887 INFO L158 Benchmark]: Toolchain (without parser) took 37183.18ms. Allocated memory was 138.4MB in the beginning and 587.2MB in the end (delta: 448.8MB). Free memory was 85.2MB in the beginning and 240.4MB in the end (delta: -155.2MB). Peak memory consumption was 294.0MB. Max. memory is 16.1GB. [2024-11-22 18:38:22,887 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 18:38:22,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.43ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 72.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 18:38:22,887 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.09ms. Allocated memory is still 138.4MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 18:38:22,888 INFO L158 Benchmark]: Boogie Preprocessor took 47.16ms. Allocated memory is still 138.4MB. Free memory was 69.9MB in the beginning and 67.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 18:38:22,888 INFO L158 Benchmark]: RCFGBuilder took 428.72ms. Allocated memory is still 138.4MB. Free memory was 67.4MB in the beginning and 100.1MB in the end (delta: -32.7MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-11-22 18:38:22,888 INFO L158 Benchmark]: TraceAbstraction took 36248.21ms. Allocated memory was 138.4MB in the beginning and 587.2MB in the end (delta: 448.8MB). Free memory was 99.4MB in the beginning and 245.6MB in the end (delta: -146.2MB). Peak memory consumption was 304.3MB. Max. memory is 16.1GB. [2024-11-22 18:38:22,888 INFO L158 Benchmark]: Witness Printer took 109.74ms. Allocated memory is still 587.2MB. Free memory was 245.6MB in the beginning and 240.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 18:38:22,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory is still 99.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.43ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 72.0MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.09ms. Allocated memory is still 138.4MB. Free memory was 72.0MB in the beginning and 69.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.16ms. Allocated memory is still 138.4MB. Free memory was 69.9MB in the beginning and 67.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 428.72ms. Allocated memory is still 138.4MB. Free memory was 67.4MB in the beginning and 100.1MB in the end (delta: -32.7MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 36248.21ms. Allocated memory was 138.4MB in the beginning and 587.2MB in the end (delta: 448.8MB). Free memory was 99.4MB in the beginning and 245.6MB in the end (delta: -146.2MB). Peak memory consumption was 304.3MB. Max. memory is 16.1GB. * Witness Printer took 109.74ms. Allocated memory is still 587.2MB. Free memory was 245.6MB in the beginning and 240.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 33]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 36.2s, OverallIterations: 16, TraceHistogramMax: 23, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 790 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 782 mSDsluCounter, 2484 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2069 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3548 IncrementalHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 415 mSDtfsCounter, 3548 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 836 GetRequests, 395 SyntacticMatches, 15 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10022 ImplicationChecksByTransitivity, 16.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=15, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 22.9s InterpolantComputationTime, 735 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 962 ConstructedInterpolants, 24 QuantifiedInterpolants, 18760 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1752 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 1792/2313 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 18:38:22,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE