./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memcleanup.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 10:07:11,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 10:07:11,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-10-13 10:07:11,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 10:07:11,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 10:07:11,367 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 10:07:11,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 10:07:11,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 10:07:11,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 10:07:11,370 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 10:07:11,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 10:07:11,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 10:07:11,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 10:07:11,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 10:07:11,373 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 10:07:11,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 10:07:11,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 10:07:11,374 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 10:07:11,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 10:07:11,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 10:07:11,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 10:07:11,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 10:07:11,378 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 10:07:11,379 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 10:07:11,379 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 10:07:11,379 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 10:07:11,379 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 10:07:11,380 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 10:07:11,380 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 10:07:11,380 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 10:07:11,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 10:07:11,380 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 10:07:11,381 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 10:07:11,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 10:07:11,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 10:07:11,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 10:07:11,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:07:11,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 10:07:11,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 10:07:11,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 10:07:11,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 10:07:11,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 10:07:11,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 10:07:11,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 10:07:11,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 10:07:11,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2024-10-13 10:07:11,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 10:07:11,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 10:07:11,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 10:07:11,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 10:07:11,615 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 10:07:11,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i [2024-10-13 10:07:12,927 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 10:07:13,275 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 10:07:13,275 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i [2024-10-13 10:07:13,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db6e6580/bc12688a1d99485f8f50de09eca7a437/FLAGe6f70dd93 [2024-10-13 10:07:13,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db6e6580/bc12688a1d99485f8f50de09eca7a437 [2024-10-13 10:07:13,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 10:07:13,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 10:07:13,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 10:07:13,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 10:07:13,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 10:07:13,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:13,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4599421b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13, skipping insertion in model container [2024-10-13 10:07:13,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:13,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 10:07:13,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:07:13,824 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 10:07:13,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 10:07:13,983 INFO L204 MainTranslator]: Completed translation [2024-10-13 10:07:13,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13 WrapperNode [2024-10-13 10:07:13,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 10:07:13,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 10:07:13,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 10:07:13,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 10:07:13,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,016 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,058 INFO L138 Inliner]: procedures = 122, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 151 [2024-10-13 10:07:14,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 10:07:14,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 10:07:14,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 10:07:14,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 10:07:14,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,106 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 10 writes are split as follows [0, 10]. [2024-10-13 10:07:14,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 10:07:14,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 10:07:14,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 10:07:14,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 10:07:14,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (1/1) ... [2024-10-13 10:07:14,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 10:07:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:07:14,158 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) [2024-10-13 10:07:14,171 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 [2024-10-13 10:07:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 10:07:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 10:07:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-10-13 10:07:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-10-13 10:07:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 10:07:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 10:07:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 10:07:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 10:07:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 10:07:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-13 10:07:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 10:07:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-13 10:07:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 10:07:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 10:07:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 10:07:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 10:07:14,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 10:07:14,320 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 10:07:14,322 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 10:07:14,550 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-10-13 10:07:14,550 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 10:07:14,571 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 10:07:14,571 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-13 10:07:14,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:07:14 BoogieIcfgContainer [2024-10-13 10:07:14,571 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 10:07:14,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 10:07:14,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 10:07:14,575 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 10:07:14,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:07:13" (1/3) ... [2024-10-13 10:07:14,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de8b356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:07:14, skipping insertion in model container [2024-10-13 10:07:14,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:07:13" (2/3) ... [2024-10-13 10:07:14,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de8b356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:07:14, skipping insertion in model container [2024-10-13 10:07:14,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:07:14" (3/3) ... [2024-10-13 10:07:14,578 INFO L112 eAbstractionObserver]: Analyzing ICFG tree-4.i [2024-10-13 10:07:14,590 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 10:07:14,590 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 10:07:14,623 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 10:07:14,628 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;@21b88522, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 10:07:14,628 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-13 10:07:14,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 43 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-13 10:07:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-13 10:07:14,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:07:14,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:07:14,636 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-13 10:07:14,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:07:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1787919449, now seen corresponding path program 1 times [2024-10-13 10:07:14,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:07:14,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523692588] [2024-10-13 10:07:14,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:14,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:07:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:07:14,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:07:14,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523692588] [2024-10-13 10:07:14,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523692588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:07:14,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:07:14,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:07:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169557841] [2024-10-13 10:07:14,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:07:14,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 10:07:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:07:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 10:07:14,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:07:14,768 INFO L87 Difference]: Start difference. First operand has 45 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 43 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 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) [2024-10-13 10:07:14,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:07:14,785 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2024-10-13 10:07:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 10:07:14,787 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2024-10-13 10:07:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:07:14,791 INFO L225 Difference]: With dead ends: 43 [2024-10-13 10:07:14,791 INFO L226 Difference]: Without dead ends: 42 [2024-10-13 10:07:14,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 10:07:14,795 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:07:14,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:07:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-13 10:07:14,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-10-13 10:07:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 40 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2024-10-13 10:07:14,819 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 7 [2024-10-13 10:07:14,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:07:14,819 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2024-10-13 10:07:14,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2024-10-13 10:07:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2024-10-13 10:07:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-13 10:07:14,820 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:07:14,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:07:14,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 10:07:14,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-13 10:07:14,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:07:14,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1785746571, now seen corresponding path program 1 times [2024-10-13 10:07:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:07:14,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617284721] [2024-10-13 10:07:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:14,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:07:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:07:14,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:07:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617284721] [2024-10-13 10:07:14,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617284721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:07:14,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:07:14,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 10:07:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597005446] [2024-10-13 10:07:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:07:14,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:07:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:07:14,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:07:14,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:07:14,891 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:07:14,960 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-10-13 10:07:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:07:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-13 10:07:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:07:14,962 INFO L225 Difference]: With dead ends: 46 [2024-10-13 10:07:14,962 INFO L226 Difference]: Without dead ends: 46 [2024-10-13 10:07:14,963 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 [2024-10-13 10:07:14,964 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 10:07:14,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 89 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 10:07:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-13 10:07:14,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-13 10:07:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 44 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2024-10-13 10:07:14,972 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 8 [2024-10-13 10:07:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:07:14,973 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2024-10-13 10:07:14,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2024-10-13 10:07:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-13 10:07:14,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:07:14,974 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:07:14,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 10:07:14,975 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-13 10:07:14,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:07:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1787593613, now seen corresponding path program 1 times [2024-10-13 10:07:14,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:07:14,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034131198] [2024-10-13 10:07:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:07:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:07:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:07:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034131198] [2024-10-13 10:07:15,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034131198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:07:15,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:07:15,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 10:07:15,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943099257] [2024-10-13 10:07:15,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:07:15,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:07:15,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:07:15,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:07:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:07:15,038 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:07:15,077 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2024-10-13 10:07:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:07:15,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-13 10:07:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:07:15,080 INFO L225 Difference]: With dead ends: 73 [2024-10-13 10:07:15,080 INFO L226 Difference]: Without dead ends: 72 [2024-10-13 10:07:15,080 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 [2024-10-13 10:07:15,081 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 27 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:07:15,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 95 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:07:15,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-13 10:07:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 49. [2024-10-13 10:07:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 47 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2024-10-13 10:07:15,090 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 8 [2024-10-13 10:07:15,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:07:15,091 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2024-10-13 10:07:15,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2024-10-13 10:07:15,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-13 10:07:15,092 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:07:15,092 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:07:15,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 10:07:15,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-13 10:07:15,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:07:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2146245147, now seen corresponding path program 1 times [2024-10-13 10:07:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:07:15,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496094721] [2024-10-13 10:07:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:07:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:07:15,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:07:15,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496094721] [2024-10-13 10:07:15,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496094721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:07:15,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:07:15,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:07:15,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368182814] [2024-10-13 10:07:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:07:15,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 10:07:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:07:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 10:07:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 10:07:15,199 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:07:15,246 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-10-13 10:07:15,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 10:07:15,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-13 10:07:15,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:07:15,247 INFO L225 Difference]: With dead ends: 52 [2024-10-13 10:07:15,247 INFO L226 Difference]: Without dead ends: 48 [2024-10-13 10:07:15,248 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 [2024-10-13 10:07:15,249 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 3 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:07:15,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:07:15,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-13 10:07:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-13 10:07:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 46 states have internal predecessors, (57), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2024-10-13 10:07:15,257 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 12 [2024-10-13 10:07:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:07:15,258 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2024-10-13 10:07:15,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2024-10-13 10:07:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-13 10:07:15,259 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:07:15,259 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:07:15,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 10:07:15,259 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-13 10:07:15,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:07:15,259 INFO L85 PathProgramCache]: Analyzing trace with hash 437045250, now seen corresponding path program 1 times [2024-10-13 10:07:15,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:07:15,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65985513] [2024-10-13 10:07:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:15,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:07:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:07:15,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:07:15,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65985513] [2024-10-13 10:07:15,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65985513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:07:15,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:07:15,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 10:07:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040326268] [2024-10-13 10:07:15,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:07:15,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 10:07:15,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:07:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 10:07:15,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:07:15,320 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:07:15,372 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2024-10-13 10:07:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 10:07:15,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-10-13 10:07:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:07:15,373 INFO L225 Difference]: With dead ends: 50 [2024-10-13 10:07:15,373 INFO L226 Difference]: Without dead ends: 50 [2024-10-13 10:07:15,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 10:07:15,375 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 10:07:15,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 82 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 10:07:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-13 10:07:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-10-13 10:07:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.302325581395349) internal successors, (56), 46 states have internal predecessors, (56), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2024-10-13 10:07:15,378 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 14 [2024-10-13 10:07:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:07:15,379 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2024-10-13 10:07:15,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2024-10-13 10:07:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-13 10:07:15,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:07:15,380 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:07:15,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 10:07:15,380 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-13 10:07:15,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:07:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -304762642, now seen corresponding path program 1 times [2024-10-13 10:07:15,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:07:15,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320366516] [2024-10-13 10:07:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:15,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:07:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:07:15,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:07:15,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320366516] [2024-10-13 10:07:15,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320366516] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:07:15,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:07:15,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 10:07:15,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147587459] [2024-10-13 10:07:15,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:07:15,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 10:07:15,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:07:15,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 10:07:15,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 10:07:15,485 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:07:15,559 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-10-13 10:07:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 10:07:15,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-13 10:07:15,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:07:15,561 INFO L225 Difference]: With dead ends: 50 [2024-10-13 10:07:15,561 INFO L226 Difference]: Without dead ends: 50 [2024-10-13 10:07:15,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:07:15,562 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 27 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 10:07:15,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 137 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 10:07:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-13 10:07:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2024-10-13 10:07:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.255813953488372) internal successors, (54), 46 states have internal predecessors, (54), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2024-10-13 10:07:15,566 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 17 [2024-10-13 10:07:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:07:15,566 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2024-10-13 10:07:15,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2024-10-13 10:07:15,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 10:07:15,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:07:15,567 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:07:15,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 10:07:15,567 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-13 10:07:15,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:07:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1238454532, now seen corresponding path program 1 times [2024-10-13 10:07:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:07:15,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431737502] [2024-10-13 10:07:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:07:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 10:07:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:07:15,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431737502] [2024-10-13 10:07:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431737502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 10:07:15,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 10:07:15,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 10:07:15,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97320004] [2024-10-13 10:07:15,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 10:07:15,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 10:07:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 10:07:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 10:07:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 10:07:15,677 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 10:07:15,771 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2024-10-13 10:07:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 10:07:15,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-13 10:07:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 10:07:15,772 INFO L225 Difference]: With dead ends: 60 [2024-10-13 10:07:15,773 INFO L226 Difference]: Without dead ends: 60 [2024-10-13 10:07:15,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 10:07:15,773 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 51 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 10:07:15,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 147 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 10:07:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-13 10:07:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2024-10-13 10:07:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 46 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-10-13 10:07:15,782 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2024-10-13 10:07:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 10:07:15,782 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-10-13 10:07:15,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 10:07:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-10-13 10:07:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-13 10:07:15,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 10:07:15,783 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 10:07:15,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 10:07:15,783 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-10-13 10:07:15,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 10:07:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1962266662, now seen corresponding path program 1 times [2024-10-13 10:07:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 10:07:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150492222] [2024-10-13 10:07:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:15,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 10:07:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 10:07:16,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 10:07:16,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150492222] [2024-10-13 10:07:16,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150492222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 10:07:16,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253243522] [2024-10-13 10:07:16,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 10:07:16,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 10:07:16,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 10:07:16,799 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) [2024-10-13 10:07:16,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 10:07:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 10:07:16,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-13 10:07:16,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 10:07:16,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-13 10:07:16,990 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 15 treesize of output 1 [2024-10-13 10:07:17,037 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-10-13 10:07:17,038 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 15 treesize of output 15 [2024-10-13 10:07:17,269 INFO L349 Elim1Store]: treesize reduction 767, result has 0.1 percent of original size [2024-10-13 10:07:17,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 17 case distinctions, treesize of input 9825 treesize of output 7163 [2024-10-13 10:07:17,376 INFO L349 Elim1Store]: treesize reduction 767, result has 0.1 percent of original size [2024-10-13 10:07:17,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 13 new quantified variables, introduced 17 case distinctions, treesize of input 9767 treesize of output 7121 [2024-10-13 10:07:17,605 INFO L349 Elim1Store]: treesize reduction 183, result has 18.7 percent of original size [2024-10-13 10:07:17,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 10435 treesize of output 6939