./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:59:31,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:59:31,280 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 17:59:31,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:59:31,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:59:31,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:59:31,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:59:31,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:59:31,312 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 17:59:31,313 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 17:59:31,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:59:31,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:59:31,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:59:31,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:59:31,317 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:59:31,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:59:31,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:59:31,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:59:31,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:59:31,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:59:31,319 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 17:59:31,322 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 17:59:31,323 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 17:59:31,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:59:31,323 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 17:59:31,323 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:59:31,323 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:59:31,324 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:59:31,324 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:59:31,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:59:31,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:59:31,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 17:59:31,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:59:31,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:59:31,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:59:31,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:59:31,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:59:31,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:59:31,326 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:59:31,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:59:31,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:59:31,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:59:31,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 [2024-10-14 17:59:31,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:59:31,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:59:31,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:59:31,593 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:59:31,593 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:59:31,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2024-10-14 17:59:32,971 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:59:33,154 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:59:33,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2024-10-14 17:59:33,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79bd1b581/81fda9d874164b32b0a9bb386fb091eb/FLAG1841de0f1 [2024-10-14 17:59:33,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79bd1b581/81fda9d874164b32b0a9bb386fb091eb [2024-10-14 17:59:33,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:59:33,178 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:59:33,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:59:33,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:59:33,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:59:33,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc5b671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33, skipping insertion in model container [2024-10-14 17:59:33,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,206 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:59:33,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:59:33,408 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:59:33,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:59:33,441 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:59:33,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33 WrapperNode [2024-10-14 17:59:33,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:59:33,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:59:33,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:59:33,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:59:33,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,475 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-10-14 17:59:33,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:59:33,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:59:33,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:59:33,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:59:33,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,512 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 1 writes are split as follows [1, 0]. [2024-10-14 17:59:33,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:59:33,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:59:33,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:59:33,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:59:33,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (1/1) ... [2024-10-14 17:59:33,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:59:33,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:33,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 17:59:33,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 17:59:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 17:59:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 17:59:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:59:33,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:59:33,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 17:59:33,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 17:59:33,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 17:59:33,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:59:33,672 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:59:33,674 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:59:33,842 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-10-14 17:59:33,843 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:59:33,888 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:59:33,889 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 17:59:33,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:59:33 BoogieIcfgContainer [2024-10-14 17:59:33,889 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:59:33,891 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:59:33,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:59:33,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:59:33,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:59:33" (1/3) ... [2024-10-14 17:59:33,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376f4323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:59:33, skipping insertion in model container [2024-10-14 17:59:33,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:59:33" (2/3) ... [2024-10-14 17:59:33,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376f4323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:59:33, skipping insertion in model container [2024-10-14 17:59:33,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:59:33" (3/3) ... [2024-10-14 17:59:33,899 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-write.c [2024-10-14 17:59:33,919 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:59:33,919 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-14 17:59:33,984 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:59:33,994 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11ac0e76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:59:33,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-14 17:59:33,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 21 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) [2024-10-14 17:59:34,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 17:59:34,008 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:34,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 17:59:34,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:34,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash 3108451, now seen corresponding path program 1 times [2024-10-14 17:59:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:34,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061365963] [2024-10-14 17:59:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:34,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061365963] [2024-10-14 17:59:34,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061365963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:34,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:59:34,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:59:34,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246260040] [2024-10-14 17:59:34,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:34,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:59:34,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:59:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:59:34,356 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 21 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:34,409 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-10-14 17:59:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:59:34,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-14 17:59:34,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:34,417 INFO L225 Difference]: With dead ends: 27 [2024-10-14 17:59:34,418 INFO L226 Difference]: Without dead ends: 26 [2024-10-14 17:59:34,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:59:34,423 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:34,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:59:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-14 17:59:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2024-10-14 17:59:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.8) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-10-14 17:59:34,452 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 4 [2024-10-14 17:59:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:34,453 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-10-14 17:59:34,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-10-14 17:59:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 17:59:34,454 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:34,454 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 17:59:34,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:59:34,455 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:34,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash 96326476, now seen corresponding path program 1 times [2024-10-14 17:59:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:34,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949297209] [2024-10-14 17:59:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:34,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:34,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:34,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949297209] [2024-10-14 17:59:34,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949297209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:34,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:59:34,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:59:34,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248788465] [2024-10-14 17:59:34,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:34,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:59:34,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:34,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:59:34,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:59:34,563 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:34,617 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-10-14 17:59:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:59:34,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2024-10-14 17:59:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:34,618 INFO L225 Difference]: With dead ends: 39 [2024-10-14 17:59:34,618 INFO L226 Difference]: Without dead ends: 39 [2024-10-14 17:59:34,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:59:34,621 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:34,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:59:34,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-14 17:59:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 25. [2024-10-14 17:59:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-10-14 17:59:34,628 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2024-10-14 17:59:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:34,629 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-10-14 17:59:34,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-10-14 17:59:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 17:59:34,630 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:34,630 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 17:59:34,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:59:34,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:34,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash 96361891, now seen corresponding path program 1 times [2024-10-14 17:59:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:34,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47687754] [2024-10-14 17:59:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:34,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47687754] [2024-10-14 17:59:34,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47687754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:34,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:59:34,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:59:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198603634] [2024-10-14 17:59:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:34,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:59:34,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:59:34,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:59:34,792 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:34,869 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2024-10-14 17:59:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:59:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-10-14 17:59:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:34,872 INFO L225 Difference]: With dead ends: 41 [2024-10-14 17:59:34,872 INFO L226 Difference]: Without dead ends: 41 [2024-10-14 17:59:34,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:59:34,875 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:34,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 28 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-14 17:59:34,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2024-10-14 17:59:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-10-14 17:59:34,883 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 5 [2024-10-14 17:59:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:34,883 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-10-14 17:59:34,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:34,884 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-10-14 17:59:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 17:59:34,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:34,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 17:59:34,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:59:34,885 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:34,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash 96362034, now seen corresponding path program 1 times [2024-10-14 17:59:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178605128] [2024-10-14 17:59:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:34,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:35,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:35,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178605128] [2024-10-14 17:59:35,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178605128] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:35,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:59:35,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:59:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055921403] [2024-10-14 17:59:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:35,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:59:35,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:59:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:59:35,014 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:35,052 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-10-14 17:59:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:59:35,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-10-14 17:59:35,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:35,053 INFO L225 Difference]: With dead ends: 25 [2024-10-14 17:59:35,053 INFO L226 Difference]: Without dead ends: 25 [2024-10-14 17:59:35,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:59:35,055 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 17 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 [2024-10-14 17:59:35,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 17 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:59:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-14 17:59:35,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-10-14 17:59:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-10-14 17:59:35,058 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2024-10-14 17:59:35,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:35,058 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-10-14 17:59:35,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,059 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-10-14 17:59:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 17:59:35,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:35,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 17:59:35,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 17:59:35,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:35,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash 96362035, now seen corresponding path program 1 times [2024-10-14 17:59:35,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:35,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138820414] [2024-10-14 17:59:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:35,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:35,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:35,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:35,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138820414] [2024-10-14 17:59:35,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138820414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:35,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:59:35,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:59:35,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118246206] [2024-10-14 17:59:35,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:35,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:59:35,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:35,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:59:35,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:59:35,211 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:35,270 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-10-14 17:59:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:59:35,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-10-14 17:59:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:35,272 INFO L225 Difference]: With dead ends: 27 [2024-10-14 17:59:35,272 INFO L226 Difference]: Without dead ends: 27 [2024-10-14 17:59:35,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:59:35,273 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 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 [2024-10-14 17:59:35,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:59:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-14 17:59:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-10-14 17:59:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-10-14 17:59:35,281 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 5 [2024-10-14 17:59:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:35,281 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-10-14 17:59:35,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-10-14 17:59:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 17:59:35,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:35,282 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-14 17:59:35,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 17:59:35,282 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:35,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1885310484, now seen corresponding path program 1 times [2024-10-14 17:59:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605607498] [2024-10-14 17:59:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:35,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:35,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605607498] [2024-10-14 17:59:35,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605607498] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:35,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136046135] [2024-10-14 17:59:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:35,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:35,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:35,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:59:35,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:59:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:35,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 17:59:35,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:35,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:35,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136046135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:35,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:35,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-14 17:59:35,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593761950] [2024-10-14 17:59:35,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:35,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:59:35,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:59:35,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-10-14 17:59:35,469 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:35,554 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2024-10-14 17:59:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:59:35,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-14 17:59:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:35,556 INFO L225 Difference]: With dead ends: 38 [2024-10-14 17:59:35,556 INFO L226 Difference]: Without dead ends: 38 [2024-10-14 17:59:35,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-14 17:59:35,558 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:35,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 46 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-14 17:59:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2024-10-14 17:59:35,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 33 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2024-10-14 17:59:35,562 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 7 [2024-10-14 17:59:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:35,563 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2024-10-14 17:59:35,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2024-10-14 17:59:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 17:59:35,563 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:35,563 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:59:35,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:35,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-14 17:59:35,765 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:35,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1684917050, now seen corresponding path program 1 times [2024-10-14 17:59:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:35,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968967407] [2024-10-14 17:59:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:35,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968967407] [2024-10-14 17:59:35,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968967407] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:35,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962019134] [2024-10-14 17:59:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:35,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:35,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:35,828 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) [2024-10-14 17:59:35,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 17:59:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:35,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 17:59:35,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:35,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:35,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962019134] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:35,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:35,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-14 17:59:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213029126] [2024-10-14 17:59:35,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:35,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 17:59:35,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 17:59:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:59:35,987 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:36,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:36,150 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2024-10-14 17:59:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 17:59:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-14 17:59:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:36,152 INFO L225 Difference]: With dead ends: 55 [2024-10-14 17:59:36,152 INFO L226 Difference]: Without dead ends: 55 [2024-10-14 17:59:36,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-10-14 17:59:36,155 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:36,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 33 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-10-14 17:59:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 33. [2024-10-14 17:59:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 32 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) [2024-10-14 17:59:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-10-14 17:59:36,162 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2024-10-14 17:59:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:36,163 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-10-14 17:59:36,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-10-14 17:59:36,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 17:59:36,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:36,163 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2024-10-14 17:59:36,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 17:59:36,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-14 17:59:36,364 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:36,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:36,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1684917194, now seen corresponding path program 1 times [2024-10-14 17:59:36,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:36,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191122721] [2024-10-14 17:59:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:36,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:36,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:36,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191122721] [2024-10-14 17:59:36,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191122721] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:36,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492170794] [2024-10-14 17:59:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:36,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:36,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:36,497 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) [2024-10-14 17:59:36,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 17:59:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:36,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 17:59:36,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:36,589 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 [2024-10-14 17:59:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:36,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:36,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492170794] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:36,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:36,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-10-14 17:59:36,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616149874] [2024-10-14 17:59:36,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:36,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 17:59:36,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 17:59:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:59:36,770 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:36,906 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-10-14 17:59:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:59:36,906 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-14 17:59:36,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:36,907 INFO L225 Difference]: With dead ends: 36 [2024-10-14 17:59:36,907 INFO L226 Difference]: Without dead ends: 36 [2024-10-14 17:59:36,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-10-14 17:59:36,908 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:36,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 32 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-14 17:59:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-10-14 17:59:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-10-14 17:59:36,912 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 8 [2024-10-14 17:59:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:36,912 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-10-14 17:59:36,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-10-14 17:59:36,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-14 17:59:36,913 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:36,913 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 17:59:36,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 17:59:37,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:37,118 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:37,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:37,118 INFO L85 PathProgramCache]: Analyzing trace with hash 87024195, now seen corresponding path program 2 times [2024-10-14 17:59:37,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:37,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476855097] [2024-10-14 17:59:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:37,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:59:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:37,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476855097] [2024-10-14 17:59:37,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476855097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:37,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:59:37,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:59:37,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496504300] [2024-10-14 17:59:37,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:37,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 17:59:37,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 17:59:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:59:37,225 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-10-14 17:59:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:37,246 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2024-10-14 17:59:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:59:37,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2024-10-14 17:59:37,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:37,247 INFO L225 Difference]: With dead ends: 32 [2024-10-14 17:59:37,247 INFO L226 Difference]: Without dead ends: 32 [2024-10-14 17:59:37,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:59:37,248 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:37,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 11 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:59:37,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-14 17:59:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-14 17:59:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2024-10-14 17:59:37,256 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2024-10-14 17:59:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:37,256 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2024-10-14 17:59:37,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2024-10-14 17:59:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2024-10-14 17:59:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-14 17:59:37,257 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:37,257 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-10-14 17:59:37,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 17:59:37,257 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:37,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:37,257 INFO L85 PathProgramCache]: Analyzing trace with hash 87024196, now seen corresponding path program 1 times [2024-10-14 17:59:37,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:37,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351882127] [2024-10-14 17:59:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:37,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:37,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:37,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351882127] [2024-10-14 17:59:37,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351882127] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:37,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:59:37,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:59:37,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524835701] [2024-10-14 17:59:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:37,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:59:37,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:59:37,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:59:37,379 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:37,404 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2024-10-14 17:59:37,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:59:37,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-14 17:59:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:37,406 INFO L225 Difference]: With dead ends: 51 [2024-10-14 17:59:37,406 INFO L226 Difference]: Without dead ends: 51 [2024-10-14 17:59:37,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:59:37,407 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:37,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:59:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-14 17:59:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2024-10-14 17:59:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-10-14 17:59:37,410 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 11 [2024-10-14 17:59:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:37,410 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-10-14 17:59:37,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-10-14 17:59:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 17:59:37,411 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:37,411 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:59:37,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 17:59:37,411 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:37,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1284463060, now seen corresponding path program 1 times [2024-10-14 17:59:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:37,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679951551] [2024-10-14 17:59:37,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:37,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:37,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:37,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679951551] [2024-10-14 17:59:37,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679951551] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:37,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701433246] [2024-10-14 17:59:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:37,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:37,497 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) [2024-10-14 17:59:37,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 17:59:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:37,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 17:59:37,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:37,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:37,671 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 [2024-10-14 17:59:37,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701433246] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:37,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:37,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-14 17:59:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561853046] [2024-10-14 17:59:37,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:37,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:59:37,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:37,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:59:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-14 17:59:37,729 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:37,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:37,814 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-10-14 17:59:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:59:37,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 15 [2024-10-14 17:59:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:37,815 INFO L225 Difference]: With dead ends: 53 [2024-10-14 17:59:37,815 INFO L226 Difference]: Without dead ends: 53 [2024-10-14 17:59:37,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:59:37,816 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 35 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:37,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 18 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-14 17:59:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2024-10-14 17:59:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-10-14 17:59:37,820 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 15 [2024-10-14 17:59:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:37,820 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-10-14 17:59:37,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-10-14 17:59:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 17:59:37,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:37,822 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2024-10-14 17:59:37,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 17:59:38,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:38,023 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:38,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1343436067, now seen corresponding path program 2 times [2024-10-14 17:59:38,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:38,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78596963] [2024-10-14 17:59:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:38,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:38,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:38,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78596963] [2024-10-14 17:59:38,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78596963] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:38,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163557420] [2024-10-14 17:59:38,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:59:38,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:38,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:38,152 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) [2024-10-14 17:59:38,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 17:59:38,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 17:59:38,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:38,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 17:59:38,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:38,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:59:38,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163557420] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:38,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:59:38,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-10-14 17:59:38,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765670829] [2024-10-14 17:59:38,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:38,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:59:38,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:38,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:59:38,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-14 17:59:38,293 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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) [2024-10-14 17:59:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:38,374 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-10-14 17:59:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:59:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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 16 [2024-10-14 17:59:38,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:38,375 INFO L225 Difference]: With dead ends: 43 [2024-10-14 17:59:38,375 INFO L226 Difference]: Without dead ends: 43 [2024-10-14 17:59:38,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-10-14 17:59:38,376 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:38,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-14 17:59:38,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-10-14 17:59:38,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 41 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-10-14 17:59:38,379 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 16 [2024-10-14 17:59:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:38,380 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-10-14 17:59:38,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 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) [2024-10-14 17:59:38,380 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-10-14 17:59:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 17:59:38,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:38,380 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:59:38,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-14 17:59:38,581 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,SelfDestructingSolverStorable11 [2024-10-14 17:59:38,581 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:38,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:38,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1713387055, now seen corresponding path program 1 times [2024-10-14 17:59:38,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:38,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553865997] [2024-10-14 17:59:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:38,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:38,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553865997] [2024-10-14 17:59:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553865997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735799815] [2024-10-14 17:59:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:38,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:38,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:38,653 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) [2024-10-14 17:59:38,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 17:59:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:38,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 17:59:38,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:38,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:59:38,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735799815] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:38,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:38,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 10 [2024-10-14 17:59:38,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160093479] [2024-10-14 17:59:38,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:38,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 17:59:38,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 17:59:38,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:59:38,853 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:38,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:38,986 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2024-10-14 17:59:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 17:59:38,987 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-14 17:59:38,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:38,987 INFO L225 Difference]: With dead ends: 91 [2024-10-14 17:59:38,987 INFO L226 Difference]: Without dead ends: 91 [2024-10-14 17:59:38,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2024-10-14 17:59:38,988 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:38,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 37 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-14 17:59:38,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-10-14 17:59:38,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.329268292682927) internal successors, (109), 86 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2024-10-14 17:59:38,993 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 17 [2024-10-14 17:59:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:38,994 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2024-10-14 17:59:38,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2024-10-14 17:59:38,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 17:59:38,994 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:38,994 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1] [2024-10-14 17:59:39,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 17:59:39,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:39,199 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:39,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1817303157, now seen corresponding path program 1 times [2024-10-14 17:59:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395808967] [2024-10-14 17:59:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:39,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:39,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395808967] [2024-10-14 17:59:39,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395808967] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:39,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341571288] [2024-10-14 17:59:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:39,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:39,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:39,385 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) [2024-10-14 17:59:39,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 17:59:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:39,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 17:59:39,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:39,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:39,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341571288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:39,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:39,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-10-14 17:59:39,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894668075] [2024-10-14 17:59:39,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:39,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-14 17:59:39,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:39,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-14 17:59:39,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-14 17:59:39,608 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 15 states, 15 states have (on average 2.8) 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) [2024-10-14 17:59:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:39,793 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2024-10-14 17:59:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 17:59:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) 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 [2024-10-14 17:59:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:39,794 INFO L225 Difference]: With dead ends: 87 [2024-10-14 17:59:39,794 INFO L226 Difference]: Without dead ends: 87 [2024-10-14 17:59:39,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2024-10-14 17:59:39,795 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 31 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:39,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 21 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-10-14 17:59:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-10-14 17:59:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.2926829268292683) internal successors, (106), 86 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2024-10-14 17:59:39,806 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 21 [2024-10-14 17:59:39,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:39,806 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2024-10-14 17:59:39,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) 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) [2024-10-14 17:59:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2024-10-14 17:59:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-14 17:59:39,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:39,807 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1] [2024-10-14 17:59:39,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 17:59:40,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:40,008 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:40,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:40,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1209637900, now seen corresponding path program 2 times [2024-10-14 17:59:40,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:40,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566506327] [2024-10-14 17:59:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:40,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 17:59:40,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:40,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566506327] [2024-10-14 17:59:40,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566506327] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:40,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007499325] [2024-10-14 17:59:40,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:59:40,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:40,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:40,221 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) [2024-10-14 17:59:40,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 17:59:40,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 17:59:40,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:40,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 17:59:40,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:40,311 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 [2024-10-14 17:59:40,324 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 [2024-10-14 17:59:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 17:59:40,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 17:59:40,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007499325] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:40,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:40,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 7 [2024-10-14 17:59:40,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572989052] [2024-10-14 17:59:40,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:40,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 17:59:40,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 17:59:40,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:59:40,612 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:40,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:40,706 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2024-10-14 17:59:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:59:40,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 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 24 [2024-10-14 17:59:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:40,708 INFO L225 Difference]: With dead ends: 110 [2024-10-14 17:59:40,708 INFO L226 Difference]: Without dead ends: 110 [2024-10-14 17:59:40,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:59:40,709 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:40,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 45 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:40,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-14 17:59:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2024-10-14 17:59:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 103 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) [2024-10-14 17:59:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2024-10-14 17:59:40,715 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 24 [2024-10-14 17:59:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:40,715 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2024-10-14 17:59:40,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2024-10-14 17:59:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 17:59:40,720 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:40,720 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 1, 1, 1, 1, 1] [2024-10-14 17:59:40,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 17:59:40,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 17:59:40,921 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:40,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1474307132, now seen corresponding path program 1 times [2024-10-14 17:59:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:40,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37187293] [2024-10-14 17:59:40,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:40,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 17:59:41,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:41,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37187293] [2024-10-14 17:59:41,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37187293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:41,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244824720] [2024-10-14 17:59:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:41,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:41,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:41,100 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) [2024-10-14 17:59:41,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 17:59:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:41,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 17:59:41,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 17:59:41,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-14 17:59:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244824720] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:41,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:41,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-10-14 17:59:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356963823] [2024-10-14 17:59:41,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:41,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-14 17:59:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-14 17:59:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-10-14 17:59:41,361 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:41,528 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2024-10-14 17:59:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 17:59:41,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 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 [2024-10-14 17:59:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:41,529 INFO L225 Difference]: With dead ends: 99 [2024-10-14 17:59:41,529 INFO L226 Difference]: Without dead ends: 99 [2024-10-14 17:59:41,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-10-14 17:59:41,530 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:41,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 53 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-14 17:59:41,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-10-14 17:59:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.2340425531914894) internal successors, (116), 98 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2024-10-14 17:59:41,537 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 26 [2024-10-14 17:59:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:41,538 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2024-10-14 17:59:41,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2024-10-14 17:59:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 17:59:41,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:41,540 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 2, 2, 2, 1, 1] [2024-10-14 17:59:41,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:41,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-14 17:59:41,740 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:41,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1216344948, now seen corresponding path program 2 times [2024-10-14 17:59:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:41,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952990550] [2024-10-14 17:59:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 21 proven. 114 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 17:59:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952990550] [2024-10-14 17:59:42,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952990550] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354311688] [2024-10-14 17:59:42,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:59:42,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:42,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:42,018 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) [2024-10-14 17:59:42,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 17:59:42,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 17:59:42,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:42,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 17:59:42,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 31 proven. 104 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 17:59:42,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 31 proven. 104 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 17:59:42,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354311688] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:42,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:42,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2024-10-14 17:59:42,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911432616] [2024-10-14 17:59:42,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:42,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-14 17:59:42,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-14 17:59:42,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-10-14 17:59:42,372 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:42,649 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2024-10-14 17:59:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 17:59:42,649 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-10-14 17:59:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:42,650 INFO L225 Difference]: With dead ends: 97 [2024-10-14 17:59:42,650 INFO L226 Difference]: Without dead ends: 97 [2024-10-14 17:59:42,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2024-10-14 17:59:42,651 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:42,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 41 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:59:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-14 17:59:42,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-10-14 17:59:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 96 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2024-10-14 17:59:42,654 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 39 [2024-10-14 17:59:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:42,654 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2024-10-14 17:59:42,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2024-10-14 17:59:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-14 17:59:42,656 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:42,656 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 3, 3, 3, 1, 1] [2024-10-14 17:59:42,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:42,859 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,SelfDestructingSolverStorable16 [2024-10-14 17:59:42,860 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:42,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2042091972, now seen corresponding path program 3 times [2024-10-14 17:59:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:42,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902225510] [2024-10-14 17:59:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 193 proven. 51 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-14 17:59:43,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:43,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902225510] [2024-10-14 17:59:43,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902225510] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:43,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825636164] [2024-10-14 17:59:43,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 17:59:43,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:43,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:43,136 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) [2024-10-14 17:59:43,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 17:59:43,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-14 17:59:43,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:43,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 17:59:43,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 127 proven. 26 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-14 17:59:43,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 127 proven. 26 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-14 17:59:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825636164] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:43,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2024-10-14 17:59:43,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955706534] [2024-10-14 17:59:43,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:43,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 17:59:43,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 17:59:43,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-10-14 17:59:43,439 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 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) [2024-10-14 17:59:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:44,236 INFO L93 Difference]: Finished difference Result 143 states and 176 transitions. [2024-10-14 17:59:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-14 17:59:44,237 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-10-14 17:59:44,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:44,237 INFO L225 Difference]: With dead ends: 143 [2024-10-14 17:59:44,238 INFO L226 Difference]: Without dead ends: 143 [2024-10-14 17:59:44,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=382, Invalid=1340, Unknown=0, NotChecked=0, Total=1722 [2024-10-14 17:59:44,239 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 100 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:44,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 83 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 17:59:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-10-14 17:59:44,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2024-10-14 17:59:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 130 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) [2024-10-14 17:59:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 164 transitions. [2024-10-14 17:59:44,244 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 164 transitions. Word has length 52 [2024-10-14 17:59:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:44,244 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 164 transitions. [2024-10-14 17:59:44,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 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) [2024-10-14 17:59:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 164 transitions. [2024-10-14 17:59:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-14 17:59:44,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:44,246 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 3, 3, 3, 1, 1] [2024-10-14 17:59:44,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:44,447 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,SelfDestructingSolverStorable17 [2024-10-14 17:59:44,447 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:44,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash -39028783, now seen corresponding path program 1 times [2024-10-14 17:59:44,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:44,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132530682] [2024-10-14 17:59:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:44,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-14 17:59:44,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:44,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132530682] [2024-10-14 17:59:44,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132530682] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:44,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907667621] [2024-10-14 17:59:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:44,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:44,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:44,792 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) [2024-10-14 17:59:44,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 17:59:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:44,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 17:59:44,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:44,920 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 [2024-10-14 17:59:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-14 17:59:45,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-10-14 17:59:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907667621] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:45,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-10-14 17:59:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723237246] [2024-10-14 17:59:45,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:45,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-14 17:59:45,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-14 17:59:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-10-14 17:59:45,546 INFO L87 Difference]: Start difference. First operand 131 states and 164 transitions. Second operand has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 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) [2024-10-14 17:59:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:45,892 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2024-10-14 17:59:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 17:59:45,893 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 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) Word has length 56 [2024-10-14 17:59:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:45,893 INFO L225 Difference]: With dead ends: 145 [2024-10-14 17:59:45,893 INFO L226 Difference]: Without dead ends: 145 [2024-10-14 17:59:45,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=640, Unknown=0, NotChecked=0, Total=870 [2024-10-14 17:59:45,894 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:45,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 42 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:59:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-10-14 17:59:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 133. [2024-10-14 17:59:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.21875) internal successors, (156), 132 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2024-10-14 17:59:45,900 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 56 [2024-10-14 17:59:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:45,901 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2024-10-14 17:59:45,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 19 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) [2024-10-14 17:59:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2024-10-14 17:59:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-14 17:59:45,906 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:45,906 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:59:45,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:46,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:46,107 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:46,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1471376211, now seen corresponding path program 2 times [2024-10-14 17:59:46,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:46,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067191754] [2024-10-14 17:59:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:46,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 82 proven. 193 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 17:59:46,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:46,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067191754] [2024-10-14 17:59:46,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067191754] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408337365] [2024-10-14 17:59:46,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:59:46,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:46,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:46,444 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) [2024-10-14 17:59:46,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-14 17:59:46,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 17:59:46,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:46,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 17:59:46,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:47,130 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#mask~0#1.base_17| Int) (|v_ULTIMATE.start_main_~#b~0#1.base_26| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_17|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_26|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_26| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_17| 0)) (not (= |v_ULTIMATE.start_main_~#b~0#1.base_26| |v_ULTIMATE.start_main_~#mask~0#1.base_17|)) (<= 1 (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_26| v_DerPreprocessor_1) |v_ULTIMATE.start_main_~#mask~0#1.base_17| v_DerPreprocessor_2) |v_ULTIMATE.start_main_~#b~0#1.base_26|)))) is different from true [2024-10-14 17:59:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-10-14 17:59:47,132 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:59:47,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408337365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:47,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:59:47,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 13 [2024-10-14 17:59:47,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501165267] [2024-10-14 17:59:47,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:47,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:59:47,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:47,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:59:47,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=117, Unknown=1, NotChecked=22, Total=182 [2024-10-14 17:59:47,133 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:47,156 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2024-10-14 17:59:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:59:47,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-14 17:59:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:47,157 INFO L225 Difference]: With dead ends: 134 [2024-10-14 17:59:47,157 INFO L226 Difference]: Without dead ends: 133 [2024-10-14 17:59:47,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=117, Unknown=1, NotChecked=22, Total=182 [2024-10-14 17:59:47,158 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:47,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2024-10-14 17:59:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-14 17:59:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-10-14 17:59:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.1875) internal successors, (152), 132 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2024-10-14 17:59:47,161 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 62 [2024-10-14 17:59:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:47,161 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2024-10-14 17:59:47,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2024-10-14 17:59:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-14 17:59:47,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:47,163 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 17:59:47,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:47,363 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,SelfDestructingSolverStorable19 [2024-10-14 17:59:47,363 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:47,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1631981054, now seen corresponding path program 1 times [2024-10-14 17:59:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:47,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576814808] [2024-10-14 17:59:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:47,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 82 proven. 193 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-14 17:59:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576814808] [2024-10-14 17:59:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576814808] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133760561] [2024-10-14 17:59:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:47,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:47,819 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) [2024-10-14 17:59:47,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-14 17:59:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:47,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 17:59:47,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 121 proven. 154 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-14 17:59:48,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 121 proven. 154 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-14 17:59:48,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133760561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:48,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 24 [2024-10-14 17:59:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215894562] [2024-10-14 17:59:48,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:48,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 17:59:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 17:59:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2024-10-14 17:59:48,274 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:48,761 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2024-10-14 17:59:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 17:59:48,762 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 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 63 [2024-10-14 17:59:48,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:48,762 INFO L225 Difference]: With dead ends: 133 [2024-10-14 17:59:48,762 INFO L226 Difference]: Without dead ends: 133 [2024-10-14 17:59:48,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2024-10-14 17:59:48,764 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 44 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:48,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 21 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 17:59:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-10-14 17:59:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-10-14 17:59:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.171875) internal successors, (150), 132 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2024-10-14 17:59:48,767 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 63 [2024-10-14 17:59:48,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:48,767 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2024-10-14 17:59:48,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.6) internal successors, (90), 24 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2024-10-14 17:59:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-14 17:59:48,768 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:48,769 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-14 17:59:48,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-14 17:59:48,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:48,970 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:48,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:48,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1140904957, now seen corresponding path program 2 times [2024-10-14 17:59:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090087063] [2024-10-14 17:59:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 107 proven. 178 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-10-14 17:59:49,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:49,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090087063] [2024-10-14 17:59:49,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090087063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:49,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362028579] [2024-10-14 17:59:49,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 17:59:49,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:49,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:49,346 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) [2024-10-14 17:59:49,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-14 17:59:49,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 17:59:49,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:49,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 17:59:49,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 27 proven. 183 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-14 17:59:49,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:49,891 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 [2024-10-14 17:59:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 27 proven. 183 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-10-14 17:59:49,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362028579] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:49,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:49,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 19 [2024-10-14 17:59:49,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179104522] [2024-10-14 17:59:49,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:49,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-14 17:59:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-14 17:59:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-10-14 17:59:49,984 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:50,243 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2024-10-14 17:59:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 17:59:50,244 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-14 17:59:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:50,245 INFO L225 Difference]: With dead ends: 136 [2024-10-14 17:59:50,245 INFO L226 Difference]: Without dead ends: 136 [2024-10-14 17:59:50,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2024-10-14 17:59:50,246 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 122 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:50,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 58 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:59:50,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-10-14 17:59:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2024-10-14 17:59:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.1550387596899225) internal successors, (149), 133 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2024-10-14 17:59:50,250 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 66 [2024-10-14 17:59:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:50,250 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2024-10-14 17:59:50,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2024-10-14 17:59:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-14 17:59:50,252 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:50,252 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 4, 3, 3, 3, 1, 1] [2024-10-14 17:59:50,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:50,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:50,457 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:50,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:50,458 INFO L85 PathProgramCache]: Analyzing trace with hash 188687013, now seen corresponding path program 4 times [2024-10-14 17:59:50,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:50,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52033524] [2024-10-14 17:59:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:50,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 136 proven. 451 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 17:59:50,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:50,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52033524] [2024-10-14 17:59:50,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52033524] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379242866] [2024-10-14 17:59:50,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 17:59:50,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:50,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:50,925 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) [2024-10-14 17:59:50,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-14 17:59:51,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 17:59:51,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:51,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 17:59:51,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:51,392 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 164 proven. 423 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 17:59:51,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 164 proven. 423 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-10-14 17:59:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379242866] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:51,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:51,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 40 [2024-10-14 17:59:51,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126723710] [2024-10-14 17:59:51,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:51,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-14 17:59:51,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-14 17:59:51,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1205, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 17:59:51,647 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 40 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:52,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:52,538 INFO L93 Difference]: Finished difference Result 248 states and 285 transitions. [2024-10-14 17:59:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-10-14 17:59:52,539 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 40 states have internal predecessors, (142), 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 73 [2024-10-14 17:59:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:52,540 INFO L225 Difference]: With dead ends: 248 [2024-10-14 17:59:52,540 INFO L226 Difference]: Without dead ends: 248 [2024-10-14 17:59:52,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3782 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2343, Invalid=6969, Unknown=0, NotChecked=0, Total=9312 [2024-10-14 17:59:52,545 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:52,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 38 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 17:59:52,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-10-14 17:59:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 233. [2024-10-14 17:59:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 228 states have (on average 1.144736842105263) internal successors, (261), 232 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 261 transitions. [2024-10-14 17:59:52,549 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 261 transitions. Word has length 73 [2024-10-14 17:59:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:52,549 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 261 transitions. [2024-10-14 17:59:52,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.4634146341463414) internal successors, (142), 40 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 261 transitions. [2024-10-14 17:59:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-14 17:59:52,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:52,551 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-14 17:59:52,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:52,751 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,SelfDestructingSolverStorable22 [2024-10-14 17:59:52,752 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:52,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1386923923, now seen corresponding path program 3 times [2024-10-14 17:59:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:52,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533584907] [2024-10-14 17:59:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-14 17:59:52,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:52,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533584907] [2024-10-14 17:59:52,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533584907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:52,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611717469] [2024-10-14 17:59:52,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 17:59:52,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:52,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:52,957 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) [2024-10-14 17:59:52,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-14 17:59:53,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 17:59:53,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:53,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 17:59:53,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:53,069 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 18 treesize of output 16 [2024-10-14 17:59:53,072 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 11 treesize of output 5 [2024-10-14 17:59:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-10-14 17:59:53,318 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:59:53,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611717469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:59:53,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:59:53,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2024-10-14 17:59:53,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55279291] [2024-10-14 17:59:53,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:59:53,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:59:53,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:53,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:59:53,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:59:53,320 INFO L87 Difference]: Start difference. First operand 233 states and 261 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:53,352 INFO L93 Difference]: Finished difference Result 231 states and 256 transitions. [2024-10-14 17:59:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:59:53,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 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 75 [2024-10-14 17:59:53,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:53,353 INFO L225 Difference]: With dead ends: 231 [2024-10-14 17:59:53,353 INFO L226 Difference]: Without dead ends: 231 [2024-10-14 17:59:53,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:59:53,354 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:53,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 19 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:59:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-10-14 17:59:53,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2024-10-14 17:59:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 227 states have (on average 1.1233480176211454) internal successors, (255), 229 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 255 transitions. [2024-10-14 17:59:53,359 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 255 transitions. Word has length 75 [2024-10-14 17:59:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:53,359 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 255 transitions. [2024-10-14 17:59:53,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 255 transitions. [2024-10-14 17:59:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-14 17:59:53,360 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:53,360 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-14 17:59:53,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-14 17:59:53,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:53,561 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:53,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:53,561 INFO L85 PathProgramCache]: Analyzing trace with hash -44970104, now seen corresponding path program 1 times [2024-10-14 17:59:53,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:53,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273316660] [2024-10-14 17:59:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:53,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-10-14 17:59:53,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:53,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273316660] [2024-10-14 17:59:53,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273316660] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:53,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648218044] [2024-10-14 17:59:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:53,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:53,777 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) [2024-10-14 17:59:53,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-14 17:59:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:53,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 17:59:53,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-14 17:59:54,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 9 proven. 309 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-14 17:59:54,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648218044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:54,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:54,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 23 [2024-10-14 17:59:54,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197795553] [2024-10-14 17:59:54,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:54,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-14 17:59:54,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:54,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-14 17:59:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2024-10-14 17:59:54,371 INFO L87 Difference]: Start difference. First operand 230 states and 255 transitions. Second operand has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:54,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:54,760 INFO L93 Difference]: Finished difference Result 289 states and 316 transitions. [2024-10-14 17:59:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-14 17:59:54,761 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 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 76 [2024-10-14 17:59:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:54,762 INFO L225 Difference]: With dead ends: 289 [2024-10-14 17:59:54,762 INFO L226 Difference]: Without dead ends: 289 [2024-10-14 17:59:54,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=473, Unknown=0, NotChecked=0, Total=756 [2024-10-14 17:59:54,763 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 129 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:54,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 105 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 17:59:54,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-10-14 17:59:54,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2024-10-14 17:59:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 284 states have (on average 1.1126760563380282) internal successors, (316), 286 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 316 transitions. [2024-10-14 17:59:54,768 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 316 transitions. Word has length 76 [2024-10-14 17:59:54,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:54,768 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 316 transitions. [2024-10-14 17:59:54,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 23 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 316 transitions. [2024-10-14 17:59:54,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-14 17:59:54,770 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:54,770 INFO L215 NwaCegarLoop]: trace histogram [45, 44, 44, 9, 8, 8, 8, 1, 1] [2024-10-14 17:59:54,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-14 17:59:54,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:54,971 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:54,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1651012573, now seen corresponding path program 5 times [2024-10-14 17:59:54,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:54,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142107100] [2024-10-14 17:59:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:54,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:55,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3406 backedges. 2063 proven. 144 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2024-10-14 17:59:55,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:55,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142107100] [2024-10-14 17:59:55,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142107100] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:55,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62082745] [2024-10-14 17:59:55,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 17:59:55,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:55,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:55,510 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) [2024-10-14 17:59:55,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-14 17:59:55,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-10-14 17:59:55,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:55,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 17:59:55,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3406 backedges. 2021 proven. 255 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2024-10-14 17:59:55,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3406 backedges. 2085 proven. 191 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2024-10-14 17:59:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62082745] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:56,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:56,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 32 [2024-10-14 17:59:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751982077] [2024-10-14 17:59:56,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:56,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-14 17:59:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:56,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-14 17:59:56,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2024-10-14 17:59:56,126 INFO L87 Difference]: Start difference. First operand 287 states and 316 transitions. Second operand has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:56,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:59:56,554 INFO L93 Difference]: Finished difference Result 287 states and 310 transitions. [2024-10-14 17:59:56,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-14 17:59:56,555 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 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 168 [2024-10-14 17:59:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:59:56,556 INFO L225 Difference]: With dead ends: 287 [2024-10-14 17:59:56,556 INFO L226 Difference]: Without dead ends: 287 [2024-10-14 17:59:56,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 313 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2024-10-14 17:59:56,557 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 39 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 17:59:56,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 29 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 17:59:56,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-10-14 17:59:56,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-10-14 17:59:56,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 284 states have (on average 1.091549295774648) internal successors, (310), 286 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:56,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 310 transitions. [2024-10-14 17:59:56,562 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 310 transitions. Word has length 168 [2024-10-14 17:59:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:59:56,562 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 310 transitions. [2024-10-14 17:59:56,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:59:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 310 transitions. [2024-10-14 17:59:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-14 17:59:56,564 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:59:56,564 INFO L215 NwaCegarLoop]: trace histogram [49, 48, 48, 9, 8, 8, 8, 1, 1] [2024-10-14 17:59:56,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-14 17:59:56,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:56,765 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 17:59:56,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:59:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1380156551, now seen corresponding path program 6 times [2024-10-14 17:59:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:59:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60208039] [2024-10-14 17:59:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:59:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:59:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:59:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3992 backedges. 2465 proven. 939 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2024-10-14 17:59:57,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:59:57,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60208039] [2024-10-14 17:59:57,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60208039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:59:57,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506702824] [2024-10-14 17:59:57,677 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 17:59:57,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:59:57,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:59:57,679 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) [2024-10-14 17:59:57,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-14 17:59:57,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-10-14 17:59:57,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 17:59:58,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 17:59:58,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:59:58,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3992 backedges. 679 proven. 1375 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2024-10-14 17:59:58,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:59:59,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3992 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2024-10-14 17:59:59,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506702824] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:59:59,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:59:59,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 44 [2024-10-14 17:59:59,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298478812] [2024-10-14 17:59:59,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:59:59,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-14 17:59:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:59:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-14 17:59:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1671, Unknown=0, NotChecked=0, Total=1980 [2024-10-14 17:59:59,527 INFO L87 Difference]: Start difference. First operand 287 states and 310 transitions. Second operand has 45 states, 45 states have (on average 3.2222222222222223) internal successors, (145), 44 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:00:03,936 INFO L93 Difference]: Finished difference Result 423 states and 472 transitions. [2024-10-14 18:00:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-10-14 18:00:03,937 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.2222222222222223) internal successors, (145), 44 states have internal predecessors, (145), 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 180 [2024-10-14 18:00:03,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:00:03,938 INFO L225 Difference]: With dead ends: 423 [2024-10-14 18:00:03,938 INFO L226 Difference]: Without dead ends: 423 [2024-10-14 18:00:03,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6813 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4044, Invalid=19212, Unknown=0, NotChecked=0, Total=23256 [2024-10-14 18:00:03,942 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 520 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:00:03,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 39 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-14 18:00:03,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-10-14 18:00:03,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 356. [2024-10-14 18:00:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 353 states have (on average 1.141643059490085) internal successors, (403), 355 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 403 transitions. [2024-10-14 18:00:03,948 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 403 transitions. Word has length 180 [2024-10-14 18:00:03,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:00:03,948 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 403 transitions. [2024-10-14 18:00:03,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.2222222222222223) internal successors, (145), 44 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 403 transitions. [2024-10-14 18:00:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-14 18:00:03,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:00:03,950 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 51, 9, 8, 8, 8, 1, 1] [2024-10-14 18:00:03,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-14 18:00:04,151 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,SelfDestructingSolverStorable26 [2024-10-14 18:00:04,151 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 18:00:04,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:00:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash -507505494, now seen corresponding path program 2 times [2024-10-14 18:00:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:00:04,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604500469] [2024-10-14 18:00:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:00:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:00:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:00:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 3052 proven. 267 refuted. 0 times theorem prover too weak. 1195 trivial. 0 not checked. [2024-10-14 18:00:04,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:00:04,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604500469] [2024-10-14 18:00:04,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604500469] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:00:04,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917239587] [2024-10-14 18:00:04,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 18:00:04,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:00:04,937 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:00:04,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-14 18:00:05,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 18:00:05,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 18:00:05,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 18:00:05,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:00:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 3127 proven. 712 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2024-10-14 18:00:05,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:00:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4514 backedges. 3127 proven. 712 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2024-10-14 18:00:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917239587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:00:05,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:00:05,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 34 [2024-10-14 18:00:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808968887] [2024-10-14 18:00:05,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:00:05,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-14 18:00:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:00:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-14 18:00:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2024-10-14 18:00:05,859 INFO L87 Difference]: Start difference. First operand 356 states and 403 transitions. Second operand has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:00:06,942 INFO L93 Difference]: Finished difference Result 386 states and 428 transitions. [2024-10-14 18:00:06,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-14 18:00:06,943 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 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 190 [2024-10-14 18:00:06,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:00:06,944 INFO L225 Difference]: With dead ends: 386 [2024-10-14 18:00:06,944 INFO L226 Difference]: Without dead ends: 386 [2024-10-14 18:00:06,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 353 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1127, Invalid=4879, Unknown=0, NotChecked=0, Total=6006 [2024-10-14 18:00:06,946 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 62 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 18:00:06,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 24 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 18:00:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-10-14 18:00:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 381. [2024-10-14 18:00:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 378 states have (on average 1.119047619047619) internal successors, (423), 380 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 423 transitions. [2024-10-14 18:00:06,954 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 423 transitions. Word has length 190 [2024-10-14 18:00:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:00:06,954 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 423 transitions. [2024-10-14 18:00:06,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8823529411764706) internal successors, (132), 34 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 423 transitions. [2024-10-14 18:00:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-14 18:00:06,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:00:06,956 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 53, 9, 8, 8, 8, 1, 1] [2024-10-14 18:00:06,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-14 18:00:07,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-14 18:00:07,161 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 18:00:07,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:00:07,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1971090808, now seen corresponding path program 3 times [2024-10-14 18:00:07,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:00:07,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136311432] [2024-10-14 18:00:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:00:07,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:00:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:00:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 3116 proven. 1201 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2024-10-14 18:00:08,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:00:08,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136311432] [2024-10-14 18:00:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136311432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:00:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806637400] [2024-10-14 18:00:08,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 18:00:08,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:08,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:00:08,114 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:00:08,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-14 18:00:08,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-14 18:00:08,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 18:00:08,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 18:00:08,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:00:08,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 18:00:08,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 18:00:08,290 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 0 case distinctions, treesize of input 11 treesize of output 1 [2024-10-14 18:00:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 30 proven. 1507 refuted. 0 times theorem prover too weak. 3308 trivial. 0 not checked. [2024-10-14 18:00:08,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:00:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4845 backedges. 0 proven. 1537 refuted. 0 times theorem prover too weak. 3308 trivial. 0 not checked. [2024-10-14 18:00:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806637400] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:00:09,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:00:09,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 4, 4] total 30 [2024-10-14 18:00:09,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051190630] [2024-10-14 18:00:09,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:00:09,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-14 18:00:09,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:00:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-14 18:00:09,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-10-14 18:00:09,836 INFO L87 Difference]: Start difference. First operand 381 states and 423 transitions. Second operand has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 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) [2024-10-14 18:00:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:00:12,115 INFO L93 Difference]: Finished difference Result 380 states and 407 transitions. [2024-10-14 18:00:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-10-14 18:00:12,116 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 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) Word has length 196 [2024-10-14 18:00:12,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:00:12,118 INFO L225 Difference]: With dead ends: 380 [2024-10-14 18:00:12,118 INFO L226 Difference]: Without dead ends: 380 [2024-10-14 18:00:12,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2886 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2754, Invalid=8802, Unknown=0, NotChecked=0, Total=11556 [2024-10-14 18:00:12,121 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 55 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 18:00:12,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 24 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 18:00:12,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-10-14 18:00:12,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-10-14 18:00:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 378 states have (on average 1.0767195767195767) internal successors, (407), 379 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 407 transitions. [2024-10-14 18:00:12,134 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 407 transitions. Word has length 196 [2024-10-14 18:00:12,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:00:12,137 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 407 transitions. [2024-10-14 18:00:12,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 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) [2024-10-14 18:00:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 407 transitions. [2024-10-14 18:00:12,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-10-14 18:00:12,138 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:00:12,138 INFO L215 NwaCegarLoop]: trace histogram [69, 68, 68, 10, 9, 9, 9, 1, 1] [2024-10-14 18:00:12,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-14 18:00:12,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-14 18:00:12,339 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 18:00:12,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:00:12,340 INFO L85 PathProgramCache]: Analyzing trace with hash -54111204, now seen corresponding path program 7 times [2024-10-14 18:00:12,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:00:12,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242309320] [2024-10-14 18:00:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:00:12,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:00:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:00:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 4908 proven. 528 refuted. 0 times theorem prover too weak. 2308 trivial. 0 not checked. [2024-10-14 18:00:13,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:00:13,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242309320] [2024-10-14 18:00:13,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242309320] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:00:13,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055229372] [2024-10-14 18:00:13,486 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 18:00:13,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:13,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:00:13,488 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:00:13,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-14 18:00:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:00:13,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 18:00:13,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:00:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2681 proven. 4358 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2024-10-14 18:00:14,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:00:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2681 proven. 4358 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2024-10-14 18:00:14,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055229372] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:00:14,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:00:14,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21, 21] total 47 [2024-10-14 18:00:14,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971494902] [2024-10-14 18:00:14,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:00:14,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-14 18:00:14,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:00:14,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-14 18:00:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=1776, Unknown=0, NotChecked=0, Total=2162 [2024-10-14 18:00:14,767 INFO L87 Difference]: Start difference. First operand 380 states and 407 transitions. Second operand has 47 states, 47 states have (on average 3.8297872340425534) internal successors, (180), 47 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:00:16,047 INFO L93 Difference]: Finished difference Result 367 states and 387 transitions. [2024-10-14 18:00:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-10-14 18:00:16,048 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.8297872340425534) internal successors, (180), 47 states have internal predecessors, (180), 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 244 [2024-10-14 18:00:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:00:16,049 INFO L225 Difference]: With dead ends: 367 [2024-10-14 18:00:16,049 INFO L226 Difference]: Without dead ends: 367 [2024-10-14 18:00:16,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 450 SyntacticMatches, 19 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4076 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2135, Invalid=9855, Unknown=0, NotChecked=0, Total=11990 [2024-10-14 18:00:16,051 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 85 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 18:00:16,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 29 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 18:00:16,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-10-14 18:00:16,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2024-10-14 18:00:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 363 states have (on average 1.0606060606060606) internal successors, (385), 364 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 385 transitions. [2024-10-14 18:00:16,059 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 385 transitions. Word has length 244 [2024-10-14 18:00:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:00:16,060 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 385 transitions. [2024-10-14 18:00:16,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.8297872340425534) internal successors, (180), 47 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 385 transitions. [2024-10-14 18:00:16,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-10-14 18:00:16,061 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:00:16,062 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-10-14 18:00:16,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-14 18:00:16,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:16,262 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 18:00:16,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:00:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1164265240, now seen corresponding path program 2 times [2024-10-14 18:00:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:00:16,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73039115] [2024-10-14 18:00:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:00:16,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:00:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:00:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6628 backedges. 4135 proven. 1835 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2024-10-14 18:00:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:00:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73039115] [2024-10-14 18:00:17,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73039115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:00:17,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339166342] [2024-10-14 18:00:17,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 18:00:17,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:17,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:00:17,428 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:00:17,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-14 18:00:17,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 18:00:17,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 18:00:17,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 18:00:17,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:00:18,923 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#mask~0#1.base_18| Int) (|v_ULTIMATE.start_main_~#b~0#1.base_27| Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_18|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_27|) 0) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_27| v_DerPreprocessor_3) |v_ULTIMATE.start_main_~#mask~0#1.base_18| v_DerPreprocessor_4) |v_ULTIMATE.start_main_~#b~0#1.base_27|) v_DerPreprocessor_3) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_27| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_18| 0)))) is different from true [2024-10-14 18:00:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6628 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6618 trivial. 0 not checked. [2024-10-14 18:00:18,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 18:00:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339166342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 18:00:18,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 18:00:18,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [25] total 28 [2024-10-14 18:00:18,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438957868] [2024-10-14 18:00:18,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 18:00:18,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 18:00:18,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:00:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 18:00:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=553, Unknown=1, NotChecked=50, Total=756 [2024-10-14 18:00:18,926 INFO L87 Difference]: Start difference. First operand 365 states and 385 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:18,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:00:18,947 INFO L93 Difference]: Finished difference Result 364 states and 384 transitions. [2024-10-14 18:00:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 18:00:18,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 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 262 [2024-10-14 18:00:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:00:18,949 INFO L225 Difference]: With dead ends: 364 [2024-10-14 18:00:18,949 INFO L226 Difference]: Without dead ends: 330 [2024-10-14 18:00:18,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=553, Unknown=1, NotChecked=50, Total=756 [2024-10-14 18:00:18,950 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 18:00:18,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2024-10-14 18:00:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-10-14 18:00:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 290. [2024-10-14 18:00:18,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.0588235294117647) internal successors, (306), 289 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 306 transitions. [2024-10-14 18:00:18,958 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 306 transitions. Word has length 262 [2024-10-14 18:00:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:00:18,958 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 306 transitions. [2024-10-14 18:00:18,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 306 transitions. [2024-10-14 18:00:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-10-14 18:00:18,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:00:18,960 INFO L215 NwaCegarLoop]: trace histogram [79, 78, 78, 11, 10, 10, 10, 1, 1] [2024-10-14 18:00:18,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-14 18:00:19,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:19,161 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 18:00:19,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:00:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash 350345397, now seen corresponding path program 8 times [2024-10-14 18:00:19,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:00:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145060933] [2024-10-14 18:00:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:00:19,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:00:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:00:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10145 backedges. 4603 proven. 4730 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2024-10-14 18:00:20,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:00:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145060933] [2024-10-14 18:00:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145060933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:00:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473619404] [2024-10-14 18:00:20,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 18:00:20,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:20,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:00:20,808 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:00:20,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-14 18:00:21,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 18:00:21,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 18:00:21,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-14 18:00:21,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:00:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10145 backedges. 3009 proven. 6327 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-10-14 18:00:21,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:00:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10145 backedges. 3009 proven. 6327 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2024-10-14 18:00:22,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473619404] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:00:22,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:00:22,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 23, 23] total 58 [2024-10-14 18:00:22,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25692598] [2024-10-14 18:00:22,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:00:22,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-14 18:00:22,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:00:22,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-14 18:00:22,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=2725, Unknown=0, NotChecked=0, Total=3306 [2024-10-14 18:00:22,169 INFO L87 Difference]: Start difference. First operand 290 states and 306 transitions. Second operand has 58 states, 58 states have (on average 3.7586206896551726) internal successors, (218), 58 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:00:23,754 INFO L93 Difference]: Finished difference Result 399 states and 419 transitions. [2024-10-14 18:00:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-10-14 18:00:23,755 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.7586206896551726) internal successors, (218), 58 states have internal predecessors, (218), 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 278 [2024-10-14 18:00:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:00:23,756 INFO L225 Difference]: With dead ends: 399 [2024-10-14 18:00:23,757 INFO L226 Difference]: Without dead ends: 399 [2024-10-14 18:00:23,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 522 SyntacticMatches, 10 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5514 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3165, Invalid=14127, Unknown=0, NotChecked=0, Total=17292 [2024-10-14 18:00:23,762 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 35 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 18:00:23,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 7 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 18:00:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-10-14 18:00:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 358. [2024-10-14 18:00:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.0560224089635855) internal successors, (377), 357 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 377 transitions. [2024-10-14 18:00:23,770 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 377 transitions. Word has length 278 [2024-10-14 18:00:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:00:23,770 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 377 transitions. [2024-10-14 18:00:23,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.7586206896551726) internal successors, (218), 58 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 377 transitions. [2024-10-14 18:00:23,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-14 18:00:23,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:00:23,772 INFO L215 NwaCegarLoop]: trace histogram [88, 87, 87, 12, 11, 11, 11, 1, 1] [2024-10-14 18:00:23,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-14 18:00:23,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-14 18:00:23,973 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 18:00:23,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:00:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash -171034505, now seen corresponding path program 9 times [2024-10-14 18:00:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:00:23,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340704326] [2024-10-14 18:00:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:00:23,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:00:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:00:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12596 backedges. 8224 proven. 420 refuted. 0 times theorem prover too weak. 3952 trivial. 0 not checked. [2024-10-14 18:00:25,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:00:25,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340704326] [2024-10-14 18:00:25,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340704326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:00:25,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471904990] [2024-10-14 18:00:25,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 18:00:25,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:25,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:00:25,098 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:00:25,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-14 18:00:25,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 18:00:25,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 18:00:25,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 18:00:25,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:00:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12596 backedges. 2585 proven. 155 refuted. 0 times theorem prover too weak. 9856 trivial. 0 not checked. [2024-10-14 18:00:25,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:00:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12596 backedges. 2585 proven. 155 refuted. 0 times theorem prover too weak. 9856 trivial. 0 not checked. [2024-10-14 18:00:26,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471904990] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:00:26,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:00:26,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 12] total 45 [2024-10-14 18:00:26,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980433412] [2024-10-14 18:00:26,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:00:26,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-14 18:00:26,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:00:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-14 18:00:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=1671, Unknown=0, NotChecked=0, Total=1980 [2024-10-14 18:00:26,028 INFO L87 Difference]: Start difference. First operand 358 states and 377 transitions. Second operand has 45 states, 45 states have (on average 3.1555555555555554) internal successors, (142), 45 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:00:33,124 INFO L93 Difference]: Finished difference Result 388 states and 415 transitions. [2024-10-14 18:00:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-14 18:00:33,124 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.1555555555555554) internal successors, (142), 45 states have internal predecessors, (142), 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 309 [2024-10-14 18:00:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:00:33,125 INFO L225 Difference]: With dead ends: 388 [2024-10-14 18:00:33,126 INFO L226 Difference]: Without dead ends: 388 [2024-10-14 18:00:33,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1480, Invalid=6530, Unknown=0, NotChecked=0, Total=8010 [2024-10-14 18:00:33,128 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 283 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 18:00:33,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 18:00:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-10-14 18:00:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 352. [2024-10-14 18:00:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.056980056980057) internal successors, (371), 351 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 371 transitions. [2024-10-14 18:00:33,134 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 371 transitions. Word has length 309 [2024-10-14 18:00:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:00:33,134 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 371 transitions. [2024-10-14 18:00:33,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.1555555555555554) internal successors, (142), 45 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 371 transitions. [2024-10-14 18:00:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-14 18:00:33,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:00:33,136 INFO L215 NwaCegarLoop]: trace histogram [101, 100, 100, 12, 11, 11, 11, 1, 1] [2024-10-14 18:00:33,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-14 18:00:33,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-14 18:00:33,337 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 18:00:33,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:00:33,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1843147214, now seen corresponding path program 10 times [2024-10-14 18:00:33,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:00:33,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219542794] [2024-10-14 18:00:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:00:33,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:00:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 18:00:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16392 backedges. 11329 proven. 1518 refuted. 0 times theorem prover too weak. 3545 trivial. 0 not checked. [2024-10-14 18:00:34,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 18:00:34,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219542794] [2024-10-14 18:00:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219542794] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 18:00:34,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117703727] [2024-10-14 18:00:34,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 18:00:34,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:34,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 18:00:34,456 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 18:00:34,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-14 18:00:35,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 18:00:35,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 18:00:35,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-14 18:00:35,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 18:00:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16392 backedges. 815 proven. 14596 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2024-10-14 18:00:36,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 18:00:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 16392 backedges. 815 proven. 14596 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2024-10-14 18:00:37,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117703727] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 18:00:37,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 18:00:37,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 36, 36] total 94 [2024-10-14 18:00:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875605463] [2024-10-14 18:00:37,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 18:00:37,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-10-14 18:00:37,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 18:00:37,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-10-14 18:00:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1426, Invalid=7316, Unknown=0, NotChecked=0, Total=8742 [2024-10-14 18:00:37,513 INFO L87 Difference]: Start difference. First operand 352 states and 371 transitions. Second operand has 94 states, 94 states have (on average 3.9148936170212765) internal successors, (368), 94 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 18:00:50,899 INFO L93 Difference]: Finished difference Result 1437 states and 1579 transitions. [2024-10-14 18:00:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 412 states. [2024-10-14 18:00:50,899 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.9148936170212765) internal successors, (368), 94 states have internal predecessors, (368), 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 348 [2024-10-14 18:00:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 18:00:50,903 INFO L225 Difference]: With dead ends: 1437 [2024-10-14 18:00:50,903 INFO L226 Difference]: Without dead ends: 1437 [2024-10-14 18:00:50,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1123 GetRequests, 626 SyntacticMatches, 3 SemanticMatches, 494 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98925 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=28946, Invalid=216574, Unknown=0, NotChecked=0, Total=245520 [2024-10-14 18:00:50,916 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 700 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3487 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-14 18:00:50,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 0 Invalid, 3551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3487 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-14 18:00:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-10-14 18:00:50,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 957. [2024-10-14 18:00:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 1.0868200836820083) internal successors, (1039), 956 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1039 transitions. [2024-10-14 18:00:50,933 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1039 transitions. Word has length 348 [2024-10-14 18:00:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 18:00:50,933 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1039 transitions. [2024-10-14 18:00:50,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.9148936170212765) internal successors, (368), 94 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 18:00:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1039 transitions. [2024-10-14 18:00:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2024-10-14 18:00:50,938 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 18:00:50,939 INFO L215 NwaCegarLoop]: trace histogram [212, 211, 211, 22, 21, 21, 21, 1, 1] [2024-10-14 18:00:50,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-14 18:00:51,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 18:00:51,140 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-10-14 18:00:51,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 18:00:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash -928786107, now seen corresponding path program 11 times [2024-10-14 18:00:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 18:00:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673064093] [2024-10-14 18:00:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 18:00:51,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 18:00:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat