./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/simple-ext_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/simple-ext_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf7f5d5a0c627430d9132d0f1be3b1c0ad58f22e7924c03137596c145de85b8c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:24:56,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:24:56,304 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:24:56,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:24:56,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:24:56,331 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:24:56,333 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:24:56,333 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:24:56,334 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:24:56,334 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:24:56,334 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:24:56,335 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:24:56,335 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:24:56,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:24:56,335 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:24:56,336 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:24:56,336 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:24:56,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:24:56,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:24:56,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:24:56,337 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:24:56,338 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:24:56,338 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:24:56,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:24:56,338 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:24:56,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:24:56,339 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:24:56,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:24:56,339 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:24:56,340 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:24:56,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:24:56,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:24:56,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:24:56,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:24:56,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:24:56,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:24:56,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:24:56,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:24:56,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:24:56,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:24:56,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:24:56,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:24:56,342 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7f5d5a0c627430d9132d0f1be3b1c0ad58f22e7924c03137596c145de85b8c [2024-11-17 00:24:56,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:24:56,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:24:56,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:24:56,548 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:24:56,548 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:24:56,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/simple-ext_1.i [2024-11-17 00:24:57,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:24:57,911 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:24:57,912 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/simple-ext_1.i [2024-11-17 00:24:57,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3048dc1dc/f8f8b2db259e45048bc2700c6dc46557/FLAGe6c4a7ee8 [2024-11-17 00:24:57,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3048dc1dc/f8f8b2db259e45048bc2700c6dc46557 [2024-11-17 00:24:57,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:24:57,938 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:24:57,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:24:57,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:24:57,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:24:57,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:24:57" (1/1) ... [2024-11-17 00:24:57,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63efef4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:57, skipping insertion in model container [2024-11-17 00:24:57,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:24:57" (1/1) ... [2024-11-17 00:24:57,984 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:24:58,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:24:58,213 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:24:58,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:24:58,291 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:24:58,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58 WrapperNode [2024-11-17 00:24:58,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:24:58,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:24:58,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:24:58,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:24:58,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,309 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,322 INFO L138 Inliner]: procedures = 124, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2024-11-17 00:24:58,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:24:58,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:24:58,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:24:58,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:24:58,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,345 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-17 00:24:58,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,350 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,354 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:24:58,355 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:24:58,355 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:24:58,355 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:24:58,357 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (1/1) ... [2024-11-17 00:24:58,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:24:58,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:24:58,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 00:24:58,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 00:24:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-17 00:24:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-17 00:24:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 00:24:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 00:24:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 00:24:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 00:24:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:24:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:24:58,513 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:24:58,515 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:24:58,537 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-17 00:24:58,709 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-17 00:24:58,709 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:24:58,721 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:24:58,721 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:24:58,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:24:58 BoogieIcfgContainer [2024-11-17 00:24:58,721 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:24:58,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:24:58,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:24:58,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:24:58,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:24:57" (1/3) ... [2024-11-17 00:24:58,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ff5377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:24:58, skipping insertion in model container [2024-11-17 00:24:58,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:24:58" (2/3) ... [2024-11-17 00:24:58,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ff5377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:24:58, skipping insertion in model container [2024-11-17 00:24:58,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:24:58" (3/3) ... [2024-11-17 00:24:58,730 INFO L112 eAbstractionObserver]: Analyzing ICFG simple-ext_1.i [2024-11-17 00:24:58,742 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:24:58,742 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2024-11-17 00:24:58,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:24:58,785 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;@1b0a5684, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:24:58,785 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-17 00:24:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 64 states have internal predecessors, (74), 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) [2024-11-17 00:24:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-17 00:24:58,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:24:58,795 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 00:24:58,798 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:24:58,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:24:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1130525624, now seen corresponding path program 1 times [2024-11-17 00:24:58,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:24:58,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894407719] [2024-11-17 00:24:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:24:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:24:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:24:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:24:58,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:24:58,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894407719] [2024-11-17 00:24:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894407719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:24:58,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:24:58,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:24:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559155480] [2024-11-17 00:24:58,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:24:58,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 00:24:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:24:58,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 00:24:58,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 00:24:58,985 INFO L87 Difference]: Start difference. First operand has 66 states, 42 states have (on average 1.7619047619047619) internal successors, (74), 64 states have internal predecessors, (74), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:24:59,013 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2024-11-17 00:24:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 00:24:59,015 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-17 00:24:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:24:59,020 INFO L225 Difference]: With dead ends: 65 [2024-11-17 00:24:59,020 INFO L226 Difference]: Without dead ends: 58 [2024-11-17 00:24:59,035 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 [2024-11-17 00:24:59,039 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:24:59,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:24:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-17 00:24:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-17 00:24:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 57 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-17 00:24:59,067 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 6 [2024-11-17 00:24:59,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:24:59,068 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-17 00:24:59,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,068 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-17 00:24:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 00:24:59,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:24:59,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:24:59,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:24:59,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:24:59,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:24:59,069 INFO L85 PathProgramCache]: Analyzing trace with hash 191590827, now seen corresponding path program 1 times [2024-11-17 00:24:59,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:24:59,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452442883] [2024-11-17 00:24:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:24:59,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:24:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:24:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:24:59,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:24:59,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452442883] [2024-11-17 00:24:59,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452442883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:24:59,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:24:59,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:24:59,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889595253] [2024-11-17 00:24:59,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:24:59,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:24:59,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:24:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:24:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:24:59,184 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:24:59,280 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2024-11-17 00:24:59,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:24:59,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-17 00:24:59,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:24:59,284 INFO L225 Difference]: With dead ends: 64 [2024-11-17 00:24:59,284 INFO L226 Difference]: Without dead ends: 64 [2024-11-17 00:24:59,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:24:59,286 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 71 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:24:59,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 39 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:24:59,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-17 00:24:59,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-17 00:24:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.5625) internal successors, (75), 63 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2024-11-17 00:24:59,294 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 8 [2024-11-17 00:24:59,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:24:59,294 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2024-11-17 00:24:59,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2024-11-17 00:24:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-17 00:24:59,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:24:59,295 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:24:59,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:24:59,295 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:24:59,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:24:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash 191590828, now seen corresponding path program 1 times [2024-11-17 00:24:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:24:59,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731410703] [2024-11-17 00:24:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:24:59,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:24:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:24:59,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:24:59,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:24:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731410703] [2024-11-17 00:24:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731410703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:24:59,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:24:59,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:24:59,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341401075] [2024-11-17 00:24:59,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:24:59,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:24:59,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:24:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:24:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:24:59,406 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:24:59,504 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2024-11-17 00:24:59,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:24:59,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-17 00:24:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:24:59,506 INFO L225 Difference]: With dead ends: 77 [2024-11-17 00:24:59,506 INFO L226 Difference]: Without dead ends: 77 [2024-11-17 00:24:59,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:24:59,507 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 74 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:24:59,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 59 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:24:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-17 00:24:59,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2024-11-17 00:24:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2024-11-17 00:24:59,515 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 8 [2024-11-17 00:24:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:24:59,515 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2024-11-17 00:24:59,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2024-11-17 00:24:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-17 00:24:59,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:24:59,516 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:24:59,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:24:59,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:24:59,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:24:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1409909531, now seen corresponding path program 1 times [2024-11-17 00:24:59,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:24:59,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222104718] [2024-11-17 00:24:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:24:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:24:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:24:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:24:59,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:24:59,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222104718] [2024-11-17 00:24:59,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222104718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:24:59,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:24:59,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 00:24:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309257200] [2024-11-17 00:24:59,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:24:59,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:24:59,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:24:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:24:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:24:59,785 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:24:59,968 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2024-11-17 00:24:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:24:59,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-17 00:24:59,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:24:59,970 INFO L225 Difference]: With dead ends: 107 [2024-11-17 00:24:59,970 INFO L226 Difference]: Without dead ends: 107 [2024-11-17 00:24:59,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:24:59,971 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 64 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:24:59,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 179 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:24:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-17 00:24:59,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 78. [2024-11-17 00:24:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 62 states have (on average 1.403225806451613) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2024-11-17 00:24:59,977 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 17 [2024-11-17 00:24:59,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:24:59,977 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2024-11-17 00:24:59,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:24:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2024-11-17 00:24:59,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-17 00:24:59,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:24:59,978 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:24:59,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:24:59,978 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:24:59,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:24:59,979 INFO L85 PathProgramCache]: Analyzing trace with hash -896028113, now seen corresponding path program 1 times [2024-11-17 00:24:59,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:24:59,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318592592] [2024-11-17 00:24:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:24:59,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:24:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:00,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:00,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318592592] [2024-11-17 00:25:00,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318592592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:00,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:00,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:25:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445440540] [2024-11-17 00:25:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:00,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:25:00,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:25:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:25:00,093 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:00,206 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2024-11-17 00:25:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 00:25:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-17 00:25:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:00,208 INFO L225 Difference]: With dead ends: 76 [2024-11-17 00:25:00,208 INFO L226 Difference]: Without dead ends: 76 [2024-11-17 00:25:00,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:25:00,209 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 15 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:00,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 137 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:25:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-17 00:25:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-17 00:25:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 75 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2024-11-17 00:25:00,216 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 17 [2024-11-17 00:25:00,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:00,216 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2024-11-17 00:25:00,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2024-11-17 00:25:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-17 00:25:00,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:00,217 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:00,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:25:00,217 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:00,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash -896028112, now seen corresponding path program 1 times [2024-11-17 00:25:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885353360] [2024-11-17 00:25:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:00,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:00,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:00,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885353360] [2024-11-17 00:25:00,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885353360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:00,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:00,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:25:00,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974678871] [2024-11-17 00:25:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:00,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:25:00,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:00,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:25:00,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:25:00,390 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:00,495 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2024-11-17 00:25:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:25:00,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-17 00:25:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:00,498 INFO L225 Difference]: With dead ends: 71 [2024-11-17 00:25:00,498 INFO L226 Difference]: Without dead ends: 71 [2024-11-17 00:25:00,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:25:00,499 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:00,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 162 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:25:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-17 00:25:00,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-17 00:25:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 65 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2024-11-17 00:25:00,505 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 17 [2024-11-17 00:25:00,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:00,506 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2024-11-17 00:25:00,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2024-11-17 00:25:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-17 00:25:00,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:00,507 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:00,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 00:25:00,508 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:00,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash -514607784, now seen corresponding path program 1 times [2024-11-17 00:25:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944900085] [2024-11-17 00:25:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:00,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:00,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944900085] [2024-11-17 00:25:00,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944900085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:00,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:00,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:25:00,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005716241] [2024-11-17 00:25:00,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:00,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:25:00,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:00,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:25:00,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:25:00,551 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:00,595 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2024-11-17 00:25:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:25:00,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-17 00:25:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:00,596 INFO L225 Difference]: With dead ends: 78 [2024-11-17 00:25:00,596 INFO L226 Difference]: Without dead ends: 78 [2024-11-17 00:25:00,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:25:00,597 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:00,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 67 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:25:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-17 00:25:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2024-11-17 00:25:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.263157894736842) internal successors, (72), 65 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2024-11-17 00:25:00,603 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 18 [2024-11-17 00:25:00,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:00,606 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2024-11-17 00:25:00,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:00,606 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2024-11-17 00:25:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-17 00:25:00,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:00,607 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:00,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 00:25:00,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:00,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2029375618, now seen corresponding path program 1 times [2024-11-17 00:25:00,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:00,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947452047] [2024-11-17 00:25:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:00,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:00,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:00,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947452047] [2024-11-17 00:25:00,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947452047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:00,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860011475] [2024-11-17 00:25:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:00,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:00,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:00,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:00,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:25:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:00,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-17 00:25:00,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:00,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:25:00,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:25:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:01,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:25:01,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2024-11-17 00:25:01,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:25:01,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:25:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:01,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860011475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:25:01,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:25:01,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2024-11-17 00:25:01,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569205515] [2024-11-17 00:25:01,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:25:01,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 00:25:01,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:01,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 00:25:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:25:01,385 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:01,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:01,541 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2024-11-17 00:25:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:25:01,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-17 00:25:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:01,542 INFO L225 Difference]: With dead ends: 85 [2024-11-17 00:25:01,542 INFO L226 Difference]: Without dead ends: 85 [2024-11-17 00:25:01,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:25:01,543 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 124 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:01,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 209 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:25:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-17 00:25:01,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2024-11-17 00:25:01,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 69 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2024-11-17 00:25:01,546 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 19 [2024-11-17 00:25:01,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:01,546 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2024-11-17 00:25:01,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2024-11-17 00:25:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-17 00:25:01,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:01,547 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:01,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 00:25:01,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:01,753 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:01,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash -162961326, now seen corresponding path program 1 times [2024-11-17 00:25:01,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:01,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142276882] [2024-11-17 00:25:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:25:01,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:01,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142276882] [2024-11-17 00:25:01,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142276882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:25:01,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:25:01,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:25:01,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538049821] [2024-11-17 00:25:01,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:25:01,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:25:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:01,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:25:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:25:01,821 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:01,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:01,872 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2024-11-17 00:25:01,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:25:01,872 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-17 00:25:01,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:01,873 INFO L225 Difference]: With dead ends: 80 [2024-11-17 00:25:01,873 INFO L226 Difference]: Without dead ends: 80 [2024-11-17 00:25:01,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:25:01,874 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 46 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:01,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 60 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:25:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-17 00:25:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2024-11-17 00:25:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 70 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2024-11-17 00:25:01,880 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 25 [2024-11-17 00:25:01,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:01,880 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2024-11-17 00:25:01,880 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:01,881 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2024-11-17 00:25:01,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-17 00:25:01,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:01,881 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] [2024-11-17 00:25:01,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 00:25:01,881 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:01,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:01,882 INFO L85 PathProgramCache]: Analyzing trace with hash 948147991, now seen corresponding path program 1 times [2024-11-17 00:25:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:01,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401044878] [2024-11-17 00:25:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:02,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:02,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401044878] [2024-11-17 00:25:02,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401044878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853714682] [2024-11-17 00:25:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:02,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:02,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:02,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:02,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:25:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:02,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-17 00:25:02,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:02,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-17 00:25:02,300 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:25:02,301 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 11 treesize of output 11 [2024-11-17 00:25:02,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 00:25:02,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-17 00:25:02,372 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 16 treesize of output 8 [2024-11-17 00:25:02,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 00:25:02,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-17 00:25:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:02,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:25:02,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:25:02,862 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2024-11-17 00:25:02,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:25:02,882 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 30 treesize of output 33 [2024-11-17 00:25:02,894 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 00:25:02,894 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 13 treesize of output 12 [2024-11-17 00:25:02,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-17 00:25:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853714682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:25:03,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:25:03,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2024-11-17 00:25:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846474829] [2024-11-17 00:25:03,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:25:03,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-17 00:25:03,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:25:03,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-17 00:25:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=749, Unknown=11, NotChecked=0, Total=870 [2024-11-17 00:25:03,051 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:25:03,470 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2024-11-17 00:25:03,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 00:25:03,470 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-17 00:25:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:25:03,471 INFO L225 Difference]: With dead ends: 117 [2024-11-17 00:25:03,471 INFO L226 Difference]: Without dead ends: 117 [2024-11-17 00:25:03,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=226, Invalid=1095, Unknown=11, NotChecked=0, Total=1332 [2024-11-17 00:25:03,472 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 137 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:25:03,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 503 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:25:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-17 00:25:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 87. [2024-11-17 00:25:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-11-17 00:25:03,475 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 26 [2024-11-17 00:25:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:25:03,475 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-11-17 00:25:03,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3) internal successors, (69), 30 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:25:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-11-17 00:25:03,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-17 00:25:03,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:25:03,476 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:25:03,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 00:25:03,677 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,SelfDestructingSolverStorable9 [2024-11-17 00:25:03,677 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 18 more)] === [2024-11-17 00:25:03,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:25:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash 658167166, now seen corresponding path program 1 times [2024-11-17 00:25:03,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:25:03,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169196236] [2024-11-17 00:25:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:25:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:25:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169196236] [2024-11-17 00:25:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169196236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:25:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839629054] [2024-11-17 00:25:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:25:03,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:25:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:25:03,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:25:04,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:25:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:25:04,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 00:25:04,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:25:04,107 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-17 00:25:04,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-17 00:25:04,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-17 00:25:04,251 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-17 00:25:04,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-17 00:25:04,274 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-17 00:25:04,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-17 00:25:04,355 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 13 [2024-11-17 00:25:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:25:04,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:25:04,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:25:04,614 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-17 00:25:04,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:25:04,621 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 40 treesize of output 39 [2024-11-17 00:25:04,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:25:06,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:25:06,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 225 treesize of output 1413