./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/diff-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/diff-alloca-2.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 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:31:09,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:31:09,954 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:31:09,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:31:09,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:31:09,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:31:09,991 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:31:09,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:31:09,992 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:31:09,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:31:09,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:31:09,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:31:09,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:31:09,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:31:09,997 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:31:09,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:31:09,998 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:31:09,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:31:09,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:31:09,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:31:09,999 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:31:10,000 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:31:10,003 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:31:10,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:31:10,004 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:31:10,004 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:31:10,004 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:31:10,004 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:31:10,005 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:31:10,005 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:31:10,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:31:10,005 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:31:10,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:31:10,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:31:10,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:31:10,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:31:10,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:31:10,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:31:10,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:31:10,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:31:10,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:31:10,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:31:10,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cc33a4b6801f9f06dbbb17ff694aba4439c76c6a2b62ec290c2132cc01ea0fe [2024-11-19 06:31:10,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:31:10,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:31:10,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:31:10,294 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:31:10,295 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:31:10,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2024-11-19 06:31:11,798 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:31:12,058 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:31:12,059 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/diff-alloca-2.i [2024-11-19 06:31:12,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18245ceb9/31ad45b6722346ad99472aa7f5881d93/FLAG1b4dbf915 [2024-11-19 06:31:12,093 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18245ceb9/31ad45b6722346ad99472aa7f5881d93 [2024-11-19 06:31:12,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:31:12,098 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:31:12,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:31:12,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:31:12,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:31:12,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7821b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12, skipping insertion in model container [2024-11-19 06:31:12,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,155 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:31:12,529 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:31:12,532 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:31:12,533 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:31:12,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:31:12,557 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:31:12,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:31:12,640 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:31:12,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12 WrapperNode [2024-11-19 06:31:12,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:31:12,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:31:12,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:31:12,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:31:12,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,684 INFO L138 Inliner]: procedures = 116, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2024-11-19 06:31:12,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:31:12,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:31:12,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:31:12,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:31:12,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,714 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [3, 2, 1]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 3 writes are split as follows [1, 1, 1]. [2024-11-19 06:31:12,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,716 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,725 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:31:12,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:31:12,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:31:12,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:31:12,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (1/1) ... [2024-11-19 06:31:12,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:31:12,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:12,763 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) [2024-11-19 06:31:12,766 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 [2024-11-19 06:31:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:31:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:31:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 06:31:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:31:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:31:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 06:31:12,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 06:31:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:31:12,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:31:12,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:31:12,955 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:31:12,957 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:31:13,207 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2024-11-19 06:31:13,207 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:31:13,224 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:31:13,224 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 06:31:13,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:13 BoogieIcfgContainer [2024-11-19 06:31:13,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:31:13,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:31:13,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:31:13,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:31:13,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:31:12" (1/3) ... [2024-11-19 06:31:13,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45853344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:13, skipping insertion in model container [2024-11-19 06:31:13,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:31:12" (2/3) ... [2024-11-19 06:31:13,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45853344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:31:13, skipping insertion in model container [2024-11-19 06:31:13,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:13" (3/3) ... [2024-11-19 06:31:13,232 INFO L112 eAbstractionObserver]: Analyzing ICFG diff-alloca-2.i [2024-11-19 06:31:13,250 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:31:13,251 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-11-19 06:31:13,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:31:13,306 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;@6ac3f882, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:31:13,307 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-19 06:31:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:31:13,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:13,315 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:13,316 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:13,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2024-11-19 06:31:13,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:13,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615019689] [2024-11-19 06:31:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:13,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:13,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615019689] [2024-11-19 06:31:13,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615019689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:13,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:13,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:31:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30607438] [2024-11-19 06:31:13,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:13,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:31:13,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:13,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:31:13,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:13,883 INFO L87 Difference]: Start difference. First operand has 42 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 41 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:13,942 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-19 06:31:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:31:13,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 06:31:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:13,953 INFO L225 Difference]: With dead ends: 41 [2024-11-19 06:31:13,953 INFO L226 Difference]: Without dead ends: 39 [2024-11-19 06:31:13,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:13,961 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:13,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:13,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-19 06:31:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-19 06:31:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2024-11-19 06:31:13,998 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 7 [2024-11-19 06:31:13,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:13,999 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2024-11-19 06:31:13,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2024-11-19 06:31:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:31:14,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:14,000 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:14,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:31:14,001 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:14,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2024-11-19 06:31:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:14,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024751909] [2024-11-19 06:31:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:14,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:14,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024751909] [2024-11-19 06:31:14,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024751909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:14,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:14,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:31:14,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182036305] [2024-11-19 06:31:14,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:14,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:31:14,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:14,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:31:14,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:31:14,358 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:14,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:14,437 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-19 06:31:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:31:14,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 06:31:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:14,439 INFO L225 Difference]: With dead ends: 58 [2024-11-19 06:31:14,439 INFO L226 Difference]: Without dead ends: 58 [2024-11-19 06:31:14,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:31:14,440 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:14,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 123 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-19 06:31:14,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2024-11-19 06:31:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 42 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2024-11-19 06:31:14,454 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 7 [2024-11-19 06:31:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:14,455 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2024-11-19 06:31:14,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2024-11-19 06:31:14,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:31:14,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:14,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:14,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:31:14,457 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:14,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2024-11-19 06:31:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211026722] [2024-11-19 06:31:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:14,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:14,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211026722] [2024-11-19 06:31:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211026722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:14,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:14,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:31:14,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144316436] [2024-11-19 06:31:14,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:14,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:31:14,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:31:14,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:31:14,796 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:14,873 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2024-11-19 06:31:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:31:14,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-19 06:31:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:14,875 INFO L225 Difference]: With dead ends: 47 [2024-11-19 06:31:14,875 INFO L226 Difference]: Without dead ends: 47 [2024-11-19 06:31:14,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:31:14,877 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 38 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:14,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 96 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-19 06:31:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2024-11-19 06:31:14,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:14,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2024-11-19 06:31:14,886 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 7 [2024-11-19 06:31:14,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:14,888 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2024-11-19 06:31:14,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:14,889 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2024-11-19 06:31:14,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:31:14,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:14,890 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:14,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:31:14,890 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:14,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:14,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1906083540, now seen corresponding path program 1 times [2024-11-19 06:31:14,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:14,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694044107] [2024-11-19 06:31:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:14,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:14,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:14,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694044107] [2024-11-19 06:31:14,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694044107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:14,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58803377] [2024-11-19 06:31:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:14,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:14,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:14,975 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) [2024-11-19 06:31:14,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:31:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:15,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 06:31:15,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:15,150 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:31:15,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58803377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:15,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:31:15,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 06:31:15,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895838252] [2024-11-19 06:31:15,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:15,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:31:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:31:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:31:15,155 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:15,196 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-19 06:31:15,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:31:15,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-19 06:31:15,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:15,197 INFO L225 Difference]: With dead ends: 56 [2024-11-19 06:31:15,198 INFO L226 Difference]: Without dead ends: 56 [2024-11-19 06:31:15,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:31:15,199 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:15,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 149 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:15,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-19 06:31:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2024-11-19 06:31:15,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 47 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2024-11-19 06:31:15,209 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 11 [2024-11-19 06:31:15,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:15,210 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2024-11-19 06:31:15,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2024-11-19 06:31:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:31:15,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:15,212 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:15,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 06:31:15,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:15,416 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:15,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2024-11-19 06:31:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:15,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393754566] [2024-11-19 06:31:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:15,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393754566] [2024-11-19 06:31:15,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393754566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:15,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448849578] [2024-11-19 06:31:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:15,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:15,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:15,765 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) [2024-11-19 06:31:15,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:31:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:15,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 06:31:15,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:15,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:31:15,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:31:15,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2024-11-19 06:31:15,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:31:16,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2024-11-19 06:31:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:16,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:16,445 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:31:16,446 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:31:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:31:16,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448849578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:16,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:16,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2024-11-19 06:31:16,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964436312] [2024-11-19 06:31:16,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:16,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 06:31:16,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:16,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 06:31:16,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2024-11-19 06:31:16,519 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:16,738 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-11-19 06:31:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:31:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 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 11 [2024-11-19 06:31:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:16,739 INFO L225 Difference]: With dead ends: 49 [2024-11-19 06:31:16,739 INFO L226 Difference]: Without dead ends: 49 [2024-11-19 06:31:16,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-11-19 06:31:16,741 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 18 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:16,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 238 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:16,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-19 06:31:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2024-11-19 06:31:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.542857142857143) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-11-19 06:31:16,751 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 11 [2024-11-19 06:31:16,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:16,751 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-11-19 06:31:16,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:16,751 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-11-19 06:31:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:31:16,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:16,752 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:16,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 06:31:16,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:16,953 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:16,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2090265385, now seen corresponding path program 1 times [2024-11-19 06:31:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:16,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171999857] [2024-11-19 06:31:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171999857] [2024-11-19 06:31:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171999857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:31:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623155730] [2024-11-19 06:31:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:17,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:31:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:17,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:31:17,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:17,007 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:17,029 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2024-11-19 06:31:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:31:17,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:31:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:17,030 INFO L225 Difference]: With dead ends: 45 [2024-11-19 06:31:17,030 INFO L226 Difference]: Without dead ends: 45 [2024-11-19 06:31:17,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:17,031 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:17,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-19 06:31:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-19 06:31:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-19 06:31:17,035 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 13 [2024-11-19 06:31:17,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:17,035 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-19 06:31:17,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-19 06:31:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:31:17,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:17,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:17,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:31:17,037 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:17,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:17,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2090265384, now seen corresponding path program 1 times [2024-11-19 06:31:17,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:17,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414038166] [2024-11-19 06:31:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:17,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:17,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:17,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414038166] [2024-11-19 06:31:17,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414038166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:17,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:17,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:31:17,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622397294] [2024-11-19 06:31:17,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:17,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:31:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:31:17,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:31:17,230 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:17,291 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2024-11-19 06:31:17,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:31:17,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:31:17,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:17,294 INFO L225 Difference]: With dead ends: 68 [2024-11-19 06:31:17,294 INFO L226 Difference]: Without dead ends: 68 [2024-11-19 06:31:17,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:31:17,295 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:17,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 108 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-19 06:31:17,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2024-11-19 06:31:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 50 states have (on average 1.38) internal successors, (69), 59 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) [2024-11-19 06:31:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2024-11-19 06:31:17,304 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 13 [2024-11-19 06:31:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:17,307 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2024-11-19 06:31:17,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,307 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2024-11-19 06:31:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:31:17,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:17,308 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:17,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:31:17,308 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:17,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1811674902, now seen corresponding path program 1 times [2024-11-19 06:31:17,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:17,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865136090] [2024-11-19 06:31:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:17,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:17,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:17,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865136090] [2024-11-19 06:31:17,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865136090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:17,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:17,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:31:17,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092571661] [2024-11-19 06:31:17,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:17,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:31:17,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:17,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:31:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:31:17,529 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:17,584 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2024-11-19 06:31:17,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:31:17,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:31:17,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:17,588 INFO L225 Difference]: With dead ends: 64 [2024-11-19 06:31:17,588 INFO L226 Difference]: Without dead ends: 64 [2024-11-19 06:31:17,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:31:17,589 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:17,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 115 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-19 06:31:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2024-11-19 06:31:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-19 06:31:17,594 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2024-11-19 06:31:17,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:17,594 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-19 06:31:17,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,594 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-19 06:31:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 06:31:17,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:17,595 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:17,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:31:17,595 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:17,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash -862198757, now seen corresponding path program 1 times [2024-11-19 06:31:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122561059] [2024-11-19 06:31:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:17,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122561059] [2024-11-19 06:31:17,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122561059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:17,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071644237] [2024-11-19 06:31:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:17,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:17,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:17,671 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) [2024-11-19 06:31:17,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:31:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:17,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 06:31:17,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:17,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:31:17,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071644237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:17,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:31:17,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 06:31:17,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311620444] [2024-11-19 06:31:17,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:17,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:31:17,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:17,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:31:17,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:31:17,800 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:17,827 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2024-11-19 06:31:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:31:17,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 06:31:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:17,828 INFO L225 Difference]: With dead ends: 66 [2024-11-19 06:31:17,829 INFO L226 Difference]: Without dead ends: 66 [2024-11-19 06:31:17,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:31:17,830 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:17,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 113 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-19 06:31:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2024-11-19 06:31:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 64 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2024-11-19 06:31:17,838 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 17 [2024-11-19 06:31:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:17,838 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2024-11-19 06:31:17,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2024-11-19 06:31:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 06:31:17,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:17,839 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:17,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:18,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:18,040 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:18,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:18,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1873316007, now seen corresponding path program 1 times [2024-11-19 06:31:18,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:18,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877783952] [2024-11-19 06:31:18,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:18,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:18,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:18,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877783952] [2024-11-19 06:31:18,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877783952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:18,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840334706] [2024-11-19 06:31:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:18,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:18,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:18,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:18,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:31:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:18,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 06:31:18,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:18,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:31:18,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:31:18,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:31:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:18,692 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:18,882 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:31:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840334706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:18,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:18,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-19 06:31:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402637240] [2024-11-19 06:31:18,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:18,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:31:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:31:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:31:18,952 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:19,189 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2024-11-19 06:31:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:31:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-19 06:31:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:19,190 INFO L225 Difference]: With dead ends: 70 [2024-11-19 06:31:19,190 INFO L226 Difference]: Without dead ends: 70 [2024-11-19 06:31:19,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:31:19,191 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 39 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:19,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 247 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:19,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-19 06:31:19,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2024-11-19 06:31:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 62 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) [2024-11-19 06:31:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-11-19 06:31:19,196 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 17 [2024-11-19 06:31:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:19,196 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-11-19 06:31:19,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-11-19 06:31:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 06:31:19,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:19,198 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:19,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 06:31:19,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:19,403 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:19,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:19,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1860319208, now seen corresponding path program 1 times [2024-11-19 06:31:19,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:19,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168658896] [2024-11-19 06:31:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:19,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:19,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168658896] [2024-11-19 06:31:19,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168658896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:19,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:19,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:31:19,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578587999] [2024-11-19 06:31:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:19,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:31:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:31:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:19,473 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:19,499 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2024-11-19 06:31:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:31:19,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-19 06:31:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:19,500 INFO L225 Difference]: With dead ends: 79 [2024-11-19 06:31:19,501 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 06:31:19,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:19,501 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:19,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 83 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 06:31:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 64. [2024-11-19 06:31:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 63 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2024-11-19 06:31:19,507 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 20 [2024-11-19 06:31:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:19,508 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2024-11-19 06:31:19,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:19,508 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2024-11-19 06:31:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 06:31:19,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:19,508 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:19,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 06:31:19,509 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:19,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1860318342, now seen corresponding path program 1 times [2024-11-19 06:31:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:19,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551964801] [2024-11-19 06:31:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:19,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:19,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:19,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551964801] [2024-11-19 06:31:19,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551964801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:19,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:19,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:31:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105666941] [2024-11-19 06:31:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:19,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:31:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:19,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:31:19,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:19,570 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:19,599 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2024-11-19 06:31:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:31:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-19 06:31:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:19,601 INFO L225 Difference]: With dead ends: 62 [2024-11-19 06:31:19,602 INFO L226 Difference]: Without dead ends: 62 [2024-11-19 06:31:19,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:19,602 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:19,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 58 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:19,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-19 06:31:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-19 06:31:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 55 states have (on average 1.290909090909091) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-11-19 06:31:19,606 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 20 [2024-11-19 06:31:19,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:19,606 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-11-19 06:31:19,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-11-19 06:31:19,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 06:31:19,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:19,608 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:19,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:31:19,608 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:19,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1860318341, now seen corresponding path program 1 times [2024-11-19 06:31:19,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:19,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416322041] [2024-11-19 06:31:19,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:19,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:19,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:19,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416322041] [2024-11-19 06:31:19,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416322041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:19,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427568299] [2024-11-19 06:31:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:19,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:19,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:19,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:19,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:31:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:19,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 06:31:19,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:19,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:19,975 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 22 treesize of output 18 [2024-11-19 06:31:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:19,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427568299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:19,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:19,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-11-19 06:31:19,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721330638] [2024-11-19 06:31:19,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:19,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:31:19,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:31:19,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:31:19,987 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:20,079 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2024-11-19 06:31:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:31:20,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-19 06:31:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:20,080 INFO L225 Difference]: With dead ends: 86 [2024-11-19 06:31:20,080 INFO L226 Difference]: Without dead ends: 86 [2024-11-19 06:31:20,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:31:20,081 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:20,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 133 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-19 06:31:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2024-11-19 06:31:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 59 states have (on average 1.305084745762712) internal successors, (77), 65 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) [2024-11-19 06:31:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-11-19 06:31:20,083 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 20 [2024-11-19 06:31:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:20,088 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-11-19 06:31:20,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-11-19 06:31:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:31:20,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:20,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:20,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 06:31:20,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 06:31:20,315 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:20,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:20,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1835293711, now seen corresponding path program 1 times [2024-11-19 06:31:20,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:20,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213544100] [2024-11-19 06:31:20,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:20,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:20,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:20,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213544100] [2024-11-19 06:31:20,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213544100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:20,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:20,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:31:20,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006228647] [2024-11-19 06:31:20,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:20,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:31:20,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:31:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:20,376 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:20,400 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-19 06:31:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:31:20,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-19 06:31:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:20,401 INFO L225 Difference]: With dead ends: 65 [2024-11-19 06:31:20,401 INFO L226 Difference]: Without dead ends: 65 [2024-11-19 06:31:20,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:20,402 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:20,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 60 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-19 06:31:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-19 06:31:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 64 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) [2024-11-19 06:31:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2024-11-19 06:31:20,405 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 21 [2024-11-19 06:31:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:20,405 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2024-11-19 06:31:20,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2024-11-19 06:31:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:31:20,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:20,407 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:20,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 06:31:20,408 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:20,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1835293710, now seen corresponding path program 1 times [2024-11-19 06:31:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339442343] [2024-11-19 06:31:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:20,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:20,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339442343] [2024-11-19 06:31:20,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339442343] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:20,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717520135] [2024-11-19 06:31:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:20,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:20,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:20,537 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:20,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:31:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:20,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 06:31:20,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:20,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:20,779 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 22 treesize of output 18 [2024-11-19 06:31:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:20,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717520135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:20,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:20,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-19 06:31:20,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139494865] [2024-11-19 06:31:20,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:20,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 06:31:20,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 06:31:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:31:20,804 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 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) [2024-11-19 06:31:20,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:20,921 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2024-11-19 06:31:20,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:31:20,921 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 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 21 [2024-11-19 06:31:20,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:20,922 INFO L225 Difference]: With dead ends: 75 [2024-11-19 06:31:20,922 INFO L226 Difference]: Without dead ends: 75 [2024-11-19 06:31:20,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:31:20,923 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:20,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 155 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-19 06:31:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2024-11-19 06:31:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 67 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2024-11-19 06:31:20,925 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 21 [2024-11-19 06:31:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:20,926 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2024-11-19 06:31:20,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 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) [2024-11-19 06:31:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2024-11-19 06:31:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:31:20,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:20,927 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:20,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 06:31:21,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 06:31:21,131 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:21,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1059572912, now seen corresponding path program 1 times [2024-11-19 06:31:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:21,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751639683] [2024-11-19 06:31:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:21,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:21,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751639683] [2024-11-19 06:31:21,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751639683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:21,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:21,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:31:21,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497746189] [2024-11-19 06:31:21,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:21,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:31:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:31:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:21,204 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:21,229 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2024-11-19 06:31:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:31:21,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-19 06:31:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:21,230 INFO L225 Difference]: With dead ends: 67 [2024-11-19 06:31:21,230 INFO L226 Difference]: Without dead ends: 67 [2024-11-19 06:31:21,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:31:21,231 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:21,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 60 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:21,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-19 06:31:21,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-19 06:31:21,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 66 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2024-11-19 06:31:21,236 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 22 [2024-11-19 06:31:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:21,236 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2024-11-19 06:31:21,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2024-11-19 06:31:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:31:21,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:21,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:21,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 06:31:21,239 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:21,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1059572911, now seen corresponding path program 1 times [2024-11-19 06:31:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838824363] [2024-11-19 06:31:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:21,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:21,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838824363] [2024-11-19 06:31:21,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838824363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:21,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:21,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:31:21,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448322313] [2024-11-19 06:31:21,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:21,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:31:21,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:21,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:31:21,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:31:21,306 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:21,333 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-11-19 06:31:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:31:21,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-19 06:31:21,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:21,334 INFO L225 Difference]: With dead ends: 68 [2024-11-19 06:31:21,334 INFO L226 Difference]: Without dead ends: 68 [2024-11-19 06:31:21,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:31:21,334 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 25 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:21,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 70 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-19 06:31:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2024-11-19 06:31:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 64 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) [2024-11-19 06:31:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-19 06:31:21,336 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 22 [2024-11-19 06:31:21,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:21,337 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-19 06:31:21,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-19 06:31:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 06:31:21,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:21,340 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] [2024-11-19 06:31:21,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 06:31:21,340 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:21,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -747793046, now seen corresponding path program 1 times [2024-11-19 06:31:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:21,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642043330] [2024-11-19 06:31:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:21,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642043330] [2024-11-19 06:31:21,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642043330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:21,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367322998] [2024-11-19 06:31:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:21,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:21,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:21,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:21,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:31:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:21,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 06:31:21,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:21,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:31:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367322998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:21,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:31:21,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-19 06:31:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844915490] [2024-11-19 06:31:21,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:21,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:31:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:31:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:31:21,570 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:21,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:21,615 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2024-11-19 06:31:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:31:21,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 [2024-11-19 06:31:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:21,617 INFO L225 Difference]: With dead ends: 84 [2024-11-19 06:31:21,617 INFO L226 Difference]: Without dead ends: 84 [2024-11-19 06:31:21,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:31:21,618 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:21,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 140 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:21,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-19 06:31:21,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2024-11-19 06:31:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.2597402597402598) internal successors, (97), 80 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2024-11-19 06:31:21,621 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 25 [2024-11-19 06:31:21,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:21,622 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2024-11-19 06:31:21,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2024-11-19 06:31:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 06:31:21,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:21,623 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] [2024-11-19 06:31:21,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 06:31:21,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:21,824 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:21,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash -528938328, now seen corresponding path program 1 times [2024-11-19 06:31:21,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:21,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855441795] [2024-11-19 06:31:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:21,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:21,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855441795] [2024-11-19 06:31:21,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855441795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103537955] [2024-11-19 06:31:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:21,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:21,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:31:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:22,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 06:31:22,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:22,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103537955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:22,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:22,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-19 06:31:22,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673477432] [2024-11-19 06:31:22,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:22,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:31:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:22,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:31:22,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:31:22,119 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:22,209 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2024-11-19 06:31:22,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:31:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-19 06:31:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:22,210 INFO L225 Difference]: With dead ends: 107 [2024-11-19 06:31:22,211 INFO L226 Difference]: Without dead ends: 107 [2024-11-19 06:31:22,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:31:22,213 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:22,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 230 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-19 06:31:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 85. [2024-11-19 06:31:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 84 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 102 transitions. [2024-11-19 06:31:22,216 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 102 transitions. Word has length 25 [2024-11-19 06:31:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:22,216 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 102 transitions. [2024-11-19 06:31:22,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:22,217 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 102 transitions. [2024-11-19 06:31:22,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:31:22,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:22,217 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:22,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:22,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:22,418 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:22,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1706790695, now seen corresponding path program 1 times [2024-11-19 06:31:22,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:22,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472462920] [2024-11-19 06:31:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:22,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472462920] [2024-11-19 06:31:22,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472462920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081696417] [2024-11-19 06:31:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:22,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:22,732 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:22,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:31:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:22,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 06:31:22,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:22,873 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:31:22,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-19 06:31:22,887 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2024-11-19 06:31:22,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 1 [2024-11-19 06:31:22,898 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2024-11-19 06:31:22,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 1 [2024-11-19 06:31:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:23,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:23,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081696417] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:23,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:31:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7] total 17 [2024-11-19 06:31:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812382283] [2024-11-19 06:31:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:23,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:31:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:31:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:31:23,387 INFO L87 Difference]: Start difference. First operand 85 states and 102 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:23,523 INFO L93 Difference]: Finished difference Result 140 states and 169 transitions. [2024-11-19 06:31:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:31:23,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2024-11-19 06:31:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:23,525 INFO L225 Difference]: With dead ends: 140 [2024-11-19 06:31:23,525 INFO L226 Difference]: Without dead ends: 140 [2024-11-19 06:31:23,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:31:23,525 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:23,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 161 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:23,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-19 06:31:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2024-11-19 06:31:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 129 states have (on average 1.2713178294573644) internal successors, (164), 132 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:23,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 164 transitions. [2024-11-19 06:31:23,529 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 164 transitions. Word has length 26 [2024-11-19 06:31:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:23,529 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 164 transitions. [2024-11-19 06:31:23,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:23,529 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 164 transitions. [2024-11-19 06:31:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:31:23,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:23,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:23,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 06:31:23,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:23,731 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:23,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1840804201, now seen corresponding path program 1 times [2024-11-19 06:31:23,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:23,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246231972] [2024-11-19 06:31:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:23,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:24,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246231972] [2024-11-19 06:31:24,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246231972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861165518] [2024-11-19 06:31:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:24,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:24,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:24,076 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:24,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:31:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:24,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-19 06:31:24,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:24,197 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 06:31:24,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2024-11-19 06:31:24,242 INFO L349 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2024-11-19 06:31:24,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-19 06:31:24,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 06:31:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:24,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:24,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861165518] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:24,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:31:24,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 11 [2024-11-19 06:31:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674373936] [2024-11-19 06:31:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:24,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:31:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:31:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:31:24,882 INFO L87 Difference]: Start difference. First operand 133 states and 164 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:24,926 INFO L93 Difference]: Finished difference Result 164 states and 205 transitions. [2024-11-19 06:31:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:31:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2024-11-19 06:31:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:24,927 INFO L225 Difference]: With dead ends: 164 [2024-11-19 06:31:24,927 INFO L226 Difference]: Without dead ends: 164 [2024-11-19 06:31:24,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:31:24,928 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:24,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 69 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:24,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-19 06:31:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 111. [2024-11-19 06:31:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 107 states have (on average 1.308411214953271) internal successors, (140), 110 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2024-11-19 06:31:24,934 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 26 [2024-11-19 06:31:24,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:24,934 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2024-11-19 06:31:24,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2024-11-19 06:31:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 06:31:24,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:24,935 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:24,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:25,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 06:31:25,136 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:25,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 460228407, now seen corresponding path program 1 times [2024-11-19 06:31:25,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:25,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507622613] [2024-11-19 06:31:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:25,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:31:25,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:25,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507622613] [2024-11-19 06:31:25,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507622613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:25,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:31:25,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:31:25,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270351024] [2024-11-19 06:31:25,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:25,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:31:25,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:31:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:25,164 INFO L87 Difference]: Start difference. First operand 111 states and 140 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:25,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:25,173 INFO L93 Difference]: Finished difference Result 115 states and 144 transitions. [2024-11-19 06:31:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:31:25,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-19 06:31:25,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:25,175 INFO L225 Difference]: With dead ends: 115 [2024-11-19 06:31:25,175 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 06:31:25,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:31:25,176 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:25,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 60 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:25,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 06:31:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-19 06:31:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 114 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2024-11-19 06:31:25,179 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 28 [2024-11-19 06:31:25,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:25,179 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2024-11-19 06:31:25,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:25,179 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2024-11-19 06:31:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 06:31:25,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:25,180 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:25,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 06:31:25,180 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:25,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1314778955, now seen corresponding path program 1 times [2024-11-19 06:31:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707093796] [2024-11-19 06:31:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:31:25,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:25,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707093796] [2024-11-19 06:31:25,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707093796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:25,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134199884] [2024-11-19 06:31:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:25,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:25,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:25,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:25,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:31:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:25,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-19 06:31:25,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:31:26,797 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:31:26,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134199884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:26,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:31:26,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-19 06:31:26,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519620415] [2024-11-19 06:31:26,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:26,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:31:26,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:26,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:31:26,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=52, Unknown=1, NotChecked=0, Total=72 [2024-11-19 06:31:26,799 INFO L87 Difference]: Start difference. First operand 115 states and 144 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:26,842 INFO L93 Difference]: Finished difference Result 114 states and 143 transitions. [2024-11-19 06:31:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:31:26,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-19 06:31:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:26,843 INFO L225 Difference]: With dead ends: 114 [2024-11-19 06:31:26,843 INFO L226 Difference]: Without dead ends: 112 [2024-11-19 06:31:26,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 11 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=52, Unknown=1, NotChecked=0, Total=72 [2024-11-19 06:31:26,844 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:26,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-19 06:31:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-19 06:31:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.2660550458715596) internal successors, (138), 111 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 138 transitions. [2024-11-19 06:31:26,847 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 138 transitions. Word has length 28 [2024-11-19 06:31:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:26,847 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 138 transitions. [2024-11-19 06:31:26,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 138 transitions. [2024-11-19 06:31:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 06:31:26,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:26,848 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:26,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 06:31:27,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 06:31:27,053 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:27,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:27,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1314778088, now seen corresponding path program 1 times [2024-11-19 06:31:27,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:27,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725174383] [2024-11-19 06:31:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:27,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:31:27,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:27,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725174383] [2024-11-19 06:31:27,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725174383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:27,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6033033] [2024-11-19 06:31:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:27,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:27,119 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:27,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:31:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:27,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 06:31:27,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:31:27,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:31:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6033033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:31:27,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:31:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 06:31:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547585306] [2024-11-19 06:31:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:31:27,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:31:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:31:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:31:27,288 INFO L87 Difference]: Start difference. First operand 112 states and 138 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:27,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:27,315 INFO L93 Difference]: Finished difference Result 165 states and 196 transitions. [2024-11-19 06:31:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:31:27,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-19 06:31:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:27,316 INFO L225 Difference]: With dead ends: 165 [2024-11-19 06:31:27,316 INFO L226 Difference]: Without dead ends: 127 [2024-11-19 06:31:27,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:31:27,317 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:27,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 103 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:31:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-19 06:31:27,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-19 06:31:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 122 states have (on average 1.2540983606557377) internal successors, (153), 124 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2024-11-19 06:31:27,321 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 28 [2024-11-19 06:31:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:27,321 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2024-11-19 06:31:27,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2024-11-19 06:31:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 06:31:27,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:27,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:27,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:27,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 06:31:27,523 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:27,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1252738474, now seen corresponding path program 1 times [2024-11-19 06:31:27,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:27,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891300705] [2024-11-19 06:31:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:27,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:27,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:27,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891300705] [2024-11-19 06:31:27,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891300705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:27,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320268875] [2024-11-19 06:31:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:27,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:27,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:27,627 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:27,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:31:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:27,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 06:31:27,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:27,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:27,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320268875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:27,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:27,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 06:31:27,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33905055] [2024-11-19 06:31:27,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:27,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:31:27,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:31:27,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:31:27,854 INFO L87 Difference]: Start difference. First operand 125 states and 153 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:27,924 INFO L93 Difference]: Finished difference Result 192 states and 227 transitions. [2024-11-19 06:31:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:31:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-19 06:31:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:27,925 INFO L225 Difference]: With dead ends: 192 [2024-11-19 06:31:27,925 INFO L226 Difference]: Without dead ends: 160 [2024-11-19 06:31:27,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:31:27,925 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:27,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 188 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:27,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-19 06:31:27,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 133. [2024-11-19 06:31:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 130 states have (on average 1.2461538461538462) internal successors, (162), 132 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2024-11-19 06:31:27,932 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 28 [2024-11-19 06:31:27,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:27,933 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2024-11-19 06:31:27,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2024-11-19 06:31:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 06:31:27,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:27,934 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:27,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 06:31:28,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-19 06:31:28,136 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:28,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:28,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1138703979, now seen corresponding path program 2 times [2024-11-19 06:31:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668525581] [2024-11-19 06:31:28,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:28,159 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:28,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:31:28,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668525581] [2024-11-19 06:31:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668525581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:28,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363760351] [2024-11-19 06:31:28,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:28,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:28,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:28,461 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:28,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:31:28,570 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:28,570 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:28,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 06:31:28,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:28,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:28,824 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 24 treesize of output 20 [2024-11-19 06:31:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:31:28,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363760351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:28,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:28,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-19 06:31:28,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367070232] [2024-11-19 06:31:28,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:28,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 06:31:28,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:28,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 06:31:28,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-19 06:31:28,881 INFO L87 Difference]: Start difference. First operand 133 states and 162 transitions. Second operand has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:29,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:29,198 INFO L93 Difference]: Finished difference Result 167 states and 204 transitions. [2024-11-19 06:31:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 06:31:29,198 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-19 06:31:29,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:29,199 INFO L225 Difference]: With dead ends: 167 [2024-11-19 06:31:29,199 INFO L226 Difference]: Without dead ends: 130 [2024-11-19 06:31:29,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=878, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 06:31:29,200 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 81 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:29,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 186 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:31:29,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-19 06:31:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2024-11-19 06:31:29,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.25) internal successors, (125), 101 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-11-19 06:31:29,203 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 29 [2024-11-19 06:31:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:29,204 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-11-19 06:31:29,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 23 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-11-19 06:31:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 06:31:29,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:29,204 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:29,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 06:31:29,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:29,409 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:29,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash -112944909, now seen corresponding path program 2 times [2024-11-19 06:31:29,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:29,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262900557] [2024-11-19 06:31:29,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:29,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:29,428 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:29,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 06:31:29,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262900557] [2024-11-19 06:31:29,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262900557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851782023] [2024-11-19 06:31:29,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:29,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:29,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:29,698 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:29,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:31:29,807 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:29,807 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:29,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 06:31:29,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:29,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:30,091 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 24 treesize of output 20 [2024-11-19 06:31:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:31:30,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851782023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:30,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:30,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-19 06:31:30,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188455272] [2024-11-19 06:31:30,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:30,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:31:30,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:30,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:31:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:31:30,145 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 18 states, 17 states have (on average 5.117647058823529) internal successors, (87), 18 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) [2024-11-19 06:31:30,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:30,382 INFO L93 Difference]: Finished difference Result 180 states and 222 transitions. [2024-11-19 06:31:30,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:31:30,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.117647058823529) internal successors, (87), 18 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) Word has length 32 [2024-11-19 06:31:30,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:30,384 INFO L225 Difference]: With dead ends: 180 [2024-11-19 06:31:30,384 INFO L226 Difference]: Without dead ends: 180 [2024-11-19 06:31:30,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:31:30,385 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 88 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:30,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 198 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-19 06:31:30,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 93. [2024-11-19 06:31:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 92 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:30,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2024-11-19 06:31:30,388 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 32 [2024-11-19 06:31:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:30,388 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2024-11-19 06:31:30,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.117647058823529) internal successors, (87), 18 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) [2024-11-19 06:31:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2024-11-19 06:31:30,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 06:31:30,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:30,389 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:30,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:30,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 06:31:30,594 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:30,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:30,594 INFO L85 PathProgramCache]: Analyzing trace with hash 829184327, now seen corresponding path program 1 times [2024-11-19 06:31:30,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:30,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419573234] [2024-11-19 06:31:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:30,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:31:30,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:30,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419573234] [2024-11-19 06:31:30,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419573234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:30,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343850260] [2024-11-19 06:31:30,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:31:30,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:30,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:30,952 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:30,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 06:31:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:31:31,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-19 06:31:31,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:31,093 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 06:31:31,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 15 [2024-11-19 06:31:31,126 INFO L349 Elim1Store]: treesize reduction 31, result has 26.2 percent of original size [2024-11-19 06:31:31,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-19 06:31:31,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 06:31:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:31:31,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:31:32,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343850260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:32,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:32,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-19 06:31:32,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140857135] [2024-11-19 06:31:32,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:32,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 06:31:32,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 06:31:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-19 06:31:32,028 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 17 states, 16 states have (on average 7.1875) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:32,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:32,267 INFO L93 Difference]: Finished difference Result 123 states and 150 transitions. [2024-11-19 06:31:32,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:31:32,268 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.1875) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-19 06:31:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:32,268 INFO L225 Difference]: With dead ends: 123 [2024-11-19 06:31:32,268 INFO L226 Difference]: Without dead ends: 123 [2024-11-19 06:31:32,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:31:32,269 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:32,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 195 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:32,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-19 06:31:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-11-19 06:31:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.2372881355932204) internal successors, (146), 118 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2024-11-19 06:31:32,272 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 41 [2024-11-19 06:31:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:32,272 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2024-11-19 06:31:32,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.1875) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2024-11-19 06:31:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 06:31:32,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:32,273 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:32,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 06:31:32,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 06:31:32,473 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:32,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:32,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1336754540, now seen corresponding path program 2 times [2024-11-19 06:31:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609318193] [2024-11-19 06:31:32,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:32,492 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:32,493 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:31:32,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:32,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609318193] [2024-11-19 06:31:32,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609318193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812888970] [2024-11-19 06:31:32,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:31:32,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:32,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:32,602 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:32,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 06:31:32,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:31:32,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:32,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 06:31:32,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:31:32,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:31:32,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812888970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:32,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:32,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-19 06:31:32,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136605936] [2024-11-19 06:31:32,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:32,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 06:31:32,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:32,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 06:31:32,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:31:32,900 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:32,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:32,956 INFO L93 Difference]: Finished difference Result 239 states and 285 transitions. [2024-11-19 06:31:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:31:32,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 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 52 [2024-11-19 06:31:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:32,957 INFO L225 Difference]: With dead ends: 239 [2024-11-19 06:31:32,957 INFO L226 Difference]: Without dead ends: 133 [2024-11-19 06:31:32,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:31:32,959 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 17 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:32,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 166 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-19 06:31:32,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2024-11-19 06:31:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.2222222222222223) internal successors, (154), 126 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 154 transitions. [2024-11-19 06:31:32,962 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 154 transitions. Word has length 52 [2024-11-19 06:31:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:32,962 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 154 transitions. [2024-11-19 06:31:32,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 154 transitions. [2024-11-19 06:31:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 06:31:32,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:32,963 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:32,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 06:31:33,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 06:31:33,163 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:33,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash -878193103, now seen corresponding path program 3 times [2024-11-19 06:31:33,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:33,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721545635] [2024-11-19 06:31:33,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:31:33,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:33,207 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 06:31:33,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:31:33,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:33,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721545635] [2024-11-19 06:31:33,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721545635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:33,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158169406] [2024-11-19 06:31:33,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:31:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:33,684 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:33,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 06:31:33,812 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 06:31:33,812 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:33,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 06:31:33,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:33,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:31:33,836 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 06:31:33,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-11-19 06:31:33,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 06:31:33,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 06:31:33,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2024-11-19 06:31:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:31:34,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:31:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158169406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:35,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:35,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 23 [2024-11-19 06:31:35,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265154818] [2024-11-19 06:31:35,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:35,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 06:31:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 06:31:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2024-11-19 06:31:35,017 INFO L87 Difference]: Start difference. First operand 127 states and 154 transitions. Second operand has 24 states, 23 states have (on average 6.956521739130435) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:35,222 INFO L93 Difference]: Finished difference Result 157 states and 191 transitions. [2024-11-19 06:31:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:31:35,222 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.956521739130435) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 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 56 [2024-11-19 06:31:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:35,223 INFO L225 Difference]: With dead ends: 157 [2024-11-19 06:31:35,223 INFO L226 Difference]: Without dead ends: 157 [2024-11-19 06:31:35,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:31:35,224 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 12 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:35,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 370 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:31:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-19 06:31:35,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2024-11-19 06:31:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.230263157894737) internal successors, (187), 152 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2024-11-19 06:31:35,227 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 56 [2024-11-19 06:31:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:35,228 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2024-11-19 06:31:35,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.956521739130435) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2024-11-19 06:31:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 06:31:35,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:35,228 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:35,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 06:31:35,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:35,429 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:35,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:35,430 INFO L85 PathProgramCache]: Analyzing trace with hash 129166186, now seen corresponding path program 4 times [2024-11-19 06:31:35,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:35,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281890930] [2024-11-19 06:31:35,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:31:35,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:35,454 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:31:35,455 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:35,613 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 45 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 06:31:35,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:35,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281890930] [2024-11-19 06:31:35,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281890930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:35,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198456408] [2024-11-19 06:31:35,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:31:35,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:35,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:35,616 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:35,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 06:31:35,771 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:31:35,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:35,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 06:31:35,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 06:31:35,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 06:31:36,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198456408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:36,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:36,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-11-19 06:31:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57616406] [2024-11-19 06:31:36,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:36,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:31:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:36,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:31:36,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:31:36,045 INFO L87 Difference]: Start difference. First operand 153 states and 187 transitions. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:36,124 INFO L93 Difference]: Finished difference Result 355 states and 427 transitions. [2024-11-19 06:31:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:31:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 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 67 [2024-11-19 06:31:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:36,125 INFO L225 Difference]: With dead ends: 355 [2024-11-19 06:31:36,125 INFO L226 Difference]: Without dead ends: 167 [2024-11-19 06:31:36,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:31:36,126 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 13 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:36,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 261 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:31:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-19 06:31:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 161. [2024-11-19 06:31:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.21875) internal successors, (195), 160 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 195 transitions. [2024-11-19 06:31:36,129 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 195 transitions. Word has length 67 [2024-11-19 06:31:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:36,129 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 195 transitions. [2024-11-19 06:31:36,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 195 transitions. [2024-11-19 06:31:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 06:31:36,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:31:36,130 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:36,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:36,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:36,331 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2024-11-19 06:31:36,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:31:36,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1457387987, now seen corresponding path program 5 times [2024-11-19 06:31:36,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:31:36,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851089656] [2024-11-19 06:31:36,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:31:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:31:36,356 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-19 06:31:36,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 46 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-19 06:31:36,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:31:36,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851089656] [2024-11-19 06:31:36,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851089656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:31:36,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599517295] [2024-11-19 06:31:36,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:31:36,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:31:36,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:31:36,817 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:31:36,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 06:31:36,960 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-19 06:31:36,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:31:36,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 06:31:36,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:31:36,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 06:31:36,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2024-11-19 06:31:36,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:31:37,006 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-19 06:31:37,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-11-19 06:31:37,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:31:37,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:31:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-19 06:31:38,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:31:38,707 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 1 proven. 72 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-19 06:31:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599517295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:31:38,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:31:38,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2024-11-19 06:31:38,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506888416] [2024-11-19 06:31:38,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:31:38,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 06:31:38,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:31:38,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 06:31:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2024-11-19 06:31:38,710 INFO L87 Difference]: Start difference. First operand 161 states and 195 transitions. Second operand has 31 states, 30 states have (on average 5.633333333333334) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:39,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:31:39,093 INFO L93 Difference]: Finished difference Result 226 states and 266 transitions. [2024-11-19 06:31:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:31:39,093 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.633333333333334) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 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 71 [2024-11-19 06:31:39,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:31:39,094 INFO L225 Difference]: With dead ends: 226 [2024-11-19 06:31:39,094 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 06:31:39,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=974, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 06:31:39,095 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 98 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:31:39,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 385 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:31:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 06:31:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 06:31:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 06:31:39,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2024-11-19 06:31:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:31:39,095 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 06:31:39,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.633333333333334) internal successors, (169), 31 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:31:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 06:31:39,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 06:31:39,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2024-11-19 06:31:39,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2024-11-19 06:31:39,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2024-11-19 06:31:39,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2024-11-19 06:31:39,101 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2024-11-19 06:31:39,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-19 06:31:39,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-19 06:31:39,305 INFO L407 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:31:39,306 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 06:31:39,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:31:39 BoogieIcfgContainer [2024-11-19 06:31:39,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 06:31:39,311 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 06:31:39,311 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 06:31:39,311 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 06:31:39,312 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:31:13" (3/4) ... [2024-11-19 06:31:39,314 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 06:31:39,321 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-11-19 06:31:39,323 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-19 06:31:39,323 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-19 06:31:39,324 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 06:31:39,404 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 06:31:39,404 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 06:31:39,404 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 06:31:39,405 INFO L158 Benchmark]: Toolchain (without parser) took 27307.48ms. Allocated memory was 155.2MB in the beginning and 461.4MB in the end (delta: 306.2MB). Free memory was 99.6MB in the beginning and 395.6MB in the end (delta: -296.0MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2024-11-19 06:31:39,405 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 120.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 06:31:39,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.31ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 80.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-19 06:31:39,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.41ms. Allocated memory is still 155.2MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 06:31:39,406 INFO L158 Benchmark]: Boogie Preprocessor took 44.77ms. Allocated memory is still 155.2MB. Free memory was 77.9MB in the beginning and 75.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 06:31:39,406 INFO L158 Benchmark]: RCFGBuilder took 494.18ms. Allocated memory is still 155.2MB. Free memory was 75.5MB in the beginning and 58.0MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-19 06:31:39,406 INFO L158 Benchmark]: TraceAbstraction took 26083.89ms. Allocated memory was 155.2MB in the beginning and 461.4MB in the end (delta: 306.2MB). Free memory was 57.7MB in the beginning and 400.8MB in the end (delta: -343.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 06:31:39,406 INFO L158 Benchmark]: Witness Printer took 93.51ms. Allocated memory is still 461.4MB. Free memory was 400.8MB in the beginning and 395.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 06:31:39,409 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 120.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.31ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 80.0MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.41ms. Allocated memory is still 155.2MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.77ms. Allocated memory is still 155.2MB. Free memory was 77.9MB in the beginning and 75.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.18ms. Allocated memory is still 155.2MB. Free memory was 75.5MB in the beginning and 58.0MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 26083.89ms. Allocated memory was 155.2MB in the beginning and 461.4MB in the end (delta: 306.2MB). Free memory was 57.7MB in the beginning and 400.8MB in the end (delta: -343.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 93.51ms. Allocated memory is still 461.4MB. Free memory was 400.8MB in the beginning and 395.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 536]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 26.0s, OverallIterations: 32, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 818 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 818 mSDsluCounter, 4711 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3653 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2995 IncrementalHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 1058 mSDtfsCounter, 2995 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1346 GetRequests, 984 SyntacticMatches, 31 SemanticMatches, 331 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=31, InterpolantAutomatonStates: 233, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 32 MinimizatonAttempts, 359 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 1455 NumberOfCodeBlocks, 1455 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 1910 ConstructedInterpolants, 95 QuantifiedInterpolants, 26596 SizeOfPredicates, 97 NumberOfNonLiveVariables, 3628 ConjunctsInSsa, 420 ConjunctsInUnsatCore, 67 InterpolantComputations, 19 PerfectInterpolantSequences, 620/1154 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 06:31:39,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE