./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:14:41,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:14:41,276 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:14:41,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:14:41,282 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:14:41,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:14:41,305 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:14:41,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:14:41,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:14:41,307 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:14:41,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:14:41,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:14:41,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:14:41,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:14:41,310 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:14:41,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:14:41,310 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:14:41,310 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:14:41,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:14:41,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:14:41,311 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:14:41,312 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:14:41,314 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:14:41,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:14:41,314 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:14:41,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:14:41,314 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:14:41,314 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:14:41,315 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:14:41,315 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:14:41,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:14:41,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:14:41,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:14:41,315 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:14:41,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:14:41,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:14:41,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:14:41,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:14:41,316 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:14:41,316 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:14:41,316 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:14:41,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:14:41,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 [2024-11-10 15:14:41,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:14:41,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:14:41,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:14:41,553 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:14:41,553 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:14:41,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2024-11-10 15:14:43,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:14:43,260 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:14:43,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2024-11-10 15:14:43,269 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af57dfda3/a1240d31ccb4458eb9a2a23ec8baaf73/FLAG2c0127db8 [2024-11-10 15:14:43,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af57dfda3/a1240d31ccb4458eb9a2a23ec8baaf73 [2024-11-10 15:14:43,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:14:43,669 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:14:43,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:14:43,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:14:43,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:14:43,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:43,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c7450c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43, skipping insertion in model container [2024-11-10 15:14:43,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:43,691 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:14:43,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:14:43,848 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:14:43,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:14:43,945 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:14:43,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43 WrapperNode [2024-11-10 15:14:43,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:14:43,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:14:43,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:14:43,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:14:43,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:43,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:43,976 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-11-10 15:14:43,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:14:43,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:14:43,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:14:43,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:14:43,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:43,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:43,991 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:44,008 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 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 [0, 1]. [2024-11-10 15:14:44,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:44,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:44,015 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:44,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:44,020 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:44,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:44,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:14:44,022 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:14:44,024 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:14:44,024 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:14:44,025 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (1/1) ... [2024-11-10 15:14:44,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:14:44,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:44,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 15:14:44,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 15:14:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:14:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:14:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:14:44,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:14:44,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:14:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 15:14:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:14:44,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:14:44,139 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:14:44,141 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:14:44,241 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L24: call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#mask~0#1.base, main_~#mask~0#1.offset);havoc main_~#mask~0#1.base, main_~#mask~0#1.offset; [2024-11-10 15:14:44,249 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-10 15:14:44,249 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:14:44,261 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:14:44,261 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:14:44,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:14:44 BoogieIcfgContainer [2024-11-10 15:14:44,262 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:14:44,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:14:44,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:14:44,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:14:44,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:14:43" (1/3) ... [2024-11-10 15:14:44,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da96be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:14:44, skipping insertion in model container [2024-11-10 15:14:44,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:43" (2/3) ... [2024-11-10 15:14:44,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da96be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:14:44, skipping insertion in model container [2024-11-10 15:14:44,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:14:44" (3/3) ... [2024-11-10 15:14:44,268 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-write.c [2024-11-10 15:14:44,279 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:14:44,280 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 15:14:44,309 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:14:44,316 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;@4448dedc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:14:44,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 15:14:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 24 states have (on average 1.625) internal successors, (39), 32 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) [2024-11-10 15:14:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-10 15:14:44,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:44,325 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:44,325 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:44,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash 30530691, now seen corresponding path program 1 times [2024-11-10 15:14:44,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:44,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449121311] [2024-11-10 15:14:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:44,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:44,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:44,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449121311] [2024-11-10 15:14:44,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449121311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:44,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:44,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:14:44,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021890408] [2024-11-10 15:14:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:44,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:14:44,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:44,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:14:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:14:44,507 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.625) internal successors, (39), 32 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) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:44,538 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-10 15:14:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:14:44,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-10 15:14:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:44,544 INFO L225 Difference]: With dead ends: 40 [2024-11-10 15:14:44,545 INFO L226 Difference]: Without dead ends: 37 [2024-11-10 15:14:44,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:14:44,548 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:44,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-10 15:14:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2024-11-10 15:14:44,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.48) internal successors, (37), 32 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) [2024-11-10 15:14:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2024-11-10 15:14:44,569 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 7 [2024-11-10 15:14:44,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:44,569 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2024-11-10 15:14:44,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2024-11-10 15:14:44,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:14:44,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:44,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:44,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:14:44,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:44,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash 944110904, now seen corresponding path program 1 times [2024-11-10 15:14:44,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:44,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598817938] [2024-11-10 15:14:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:44,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:44,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:44,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598817938] [2024-11-10 15:14:44,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598817938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:44,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:44,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:14:44,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538437817] [2024-11-10 15:14:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:44,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:14:44,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:14:44,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:14:44,617 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:44,660 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-10 15:14:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:14:44,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-10 15:14:44,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:44,661 INFO L225 Difference]: With dead ends: 56 [2024-11-10 15:14:44,661 INFO L226 Difference]: Without dead ends: 56 [2024-11-10 15:14:44,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:14:44,663 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 44 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 [2024-11-10 15:14:44,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 44 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:44,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-10 15:14:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2024-11-10 15:14:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-10 15:14:44,670 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2024-11-10 15:14:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:44,671 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-10 15:14:44,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-10 15:14:44,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:14:44,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:44,672 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:44,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:14:44,672 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:44,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 946451420, now seen corresponding path program 1 times [2024-11-10 15:14:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:44,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514734235] [2024-11-10 15:14:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:44,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:44,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:44,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514734235] [2024-11-10 15:14:44,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514734235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:44,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:44,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:14:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768703882] [2024-11-10 15:14:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:44,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:14:44,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:14:44,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:14:44,804 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:44,852 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2024-11-10 15:14:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:14:44,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-10 15:14:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:44,854 INFO L225 Difference]: With dead ends: 36 [2024-11-10 15:14:44,854 INFO L226 Difference]: Without dead ends: 36 [2024-11-10 15:14:44,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:14:44,855 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 30 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:44,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-10 15:14:44,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-10 15:14:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2024-11-10 15:14:44,861 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2024-11-10 15:14:44,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:44,861 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2024-11-10 15:14:44,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,861 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2024-11-10 15:14:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 15:14:44,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:44,862 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:44,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:14:44,862 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:44,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash 946451421, now seen corresponding path program 1 times [2024-11-10 15:14:44,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:44,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274131935] [2024-11-10 15:14:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:44,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:44,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274131935] [2024-11-10 15:14:44,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274131935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:44,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:44,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:14:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258640819] [2024-11-10 15:14:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:44,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:14:44,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:44,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:14:44,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:14:44,983 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:45,030 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-10 15:14:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:14:45,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-10 15:14:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:45,031 INFO L225 Difference]: With dead ends: 39 [2024-11-10 15:14:45,031 INFO L226 Difference]: Without dead ends: 39 [2024-11-10 15:14:45,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:14:45,032 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:45,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 36 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-10 15:14:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2024-11-10 15:14:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2024-11-10 15:14:45,037 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2024-11-10 15:14:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:45,037 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2024-11-10 15:14:45,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2024-11-10 15:14:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 15:14:45,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:45,038 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:45,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 15:14:45,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:45,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:45,039 INFO L85 PathProgramCache]: Analyzing trace with hash -724811780, now seen corresponding path program 1 times [2024-11-10 15:14:45,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:45,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101089150] [2024-11-10 15:14:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:45,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:45,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101089150] [2024-11-10 15:14:45,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101089150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:45,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:45,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:14:45,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708449916] [2024-11-10 15:14:45,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:45,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:14:45,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:45,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:14:45,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:14:45,081 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:45,130 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-11-10 15:14:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:14:45,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-10 15:14:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:45,131 INFO L225 Difference]: With dead ends: 57 [2024-11-10 15:14:45,131 INFO L226 Difference]: Without dead ends: 57 [2024-11-10 15:14:45,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:14:45,132 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:45,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 52 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:45,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-10 15:14:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2024-11-10 15:14:45,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.34375) internal successors, (43), 38 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) [2024-11-10 15:14:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-10 15:14:45,135 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 9 [2024-11-10 15:14:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:45,136 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-10 15:14:45,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-10 15:14:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-10 15:14:45,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:45,137 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:45,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:14:45,137 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:45,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1032612799, now seen corresponding path program 1 times [2024-11-10 15:14:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:45,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079165725] [2024-11-10 15:14:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:45,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:45,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079165725] [2024-11-10 15:14:45,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079165725] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:45,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501761013] [2024-11-10 15:14:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:45,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:45,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:45,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:45,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:14:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:45,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 15:14:45,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:45,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:45,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501761013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:45,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:45,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-10 15:14:45,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788517564] [2024-11-10 15:14:45,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:45,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:14:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:14:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:14:45,440 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:45,568 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2024-11-10 15:14:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:14:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-10 15:14:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:45,570 INFO L225 Difference]: With dead ends: 57 [2024-11-10 15:14:45,570 INFO L226 Difference]: Without dead ends: 57 [2024-11-10 15:14:45,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:14:45,571 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:45,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 94 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-10 15:14:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2024-11-10 15:14:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2024-11-10 15:14:45,575 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 12 [2024-11-10 15:14:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:45,576 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2024-11-10 15:14:45,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2024-11-10 15:14:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-10 15:14:45,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:45,576 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:45,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 15:14:45,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 15:14:45,778 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:45,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1946225697, now seen corresponding path program 1 times [2024-11-10 15:14:45,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:45,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114599028] [2024-11-10 15:14:45,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:45,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:45,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:45,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114599028] [2024-11-10 15:14:45,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114599028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:45,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771342758] [2024-11-10 15:14:45,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:45,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:45,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:45,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:45,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:14:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:45,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-10 15:14:45,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:45,935 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 8 treesize of output 1 [2024-11-10 15:14:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:46,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:46,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771342758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:46,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:46,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-10 15:14:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291378849] [2024-11-10 15:14:46,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:46,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:14:46,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:14:46,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:14:46,083 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-10 15:14:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:46,201 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2024-11-10 15:14:46,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:14:46,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) Word has length 13 [2024-11-10 15:14:46,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:46,202 INFO L225 Difference]: With dead ends: 58 [2024-11-10 15:14:46,202 INFO L226 Difference]: Without dead ends: 58 [2024-11-10 15:14:46,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:14:46,203 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:46,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 100 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-10 15:14:46,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-10 15:14:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.297872340425532) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2024-11-10 15:14:46,206 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2024-11-10 15:14:46,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:46,206 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2024-11-10 15:14:46,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2024-11-10 15:14:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2024-11-10 15:14:46,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-10 15:14:46,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:46,207 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:46,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 15:14:46,410 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 [2024-11-10 15:14:46,411 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:46,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash -203489222, now seen corresponding path program 1 times [2024-11-10 15:14:46,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:46,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535653142] [2024-11-10 15:14:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:46,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535653142] [2024-11-10 15:14:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535653142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:46,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405760543] [2024-11-10 15:14:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:46,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:46,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:46,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:46,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:14:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:46,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 15:14:46,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:46,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:46,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405760543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:46,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:46,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-10 15:14:46,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370691309] [2024-11-10 15:14:46,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:46,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:14:46,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:14:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:14:46,661 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) [2024-11-10 15:14:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:46,839 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2024-11-10 15:14:46,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 15:14:46,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) Word has length 14 [2024-11-10 15:14:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:46,840 INFO L225 Difference]: With dead ends: 86 [2024-11-10 15:14:46,840 INFO L226 Difference]: Without dead ends: 86 [2024-11-10 15:14:46,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:14:46,841 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 91 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:46,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 77 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-10 15:14:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 52. [2024-11-10 15:14:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 51 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2024-11-10 15:14:46,852 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 14 [2024-11-10 15:14:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:46,852 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2024-11-10 15:14:46,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 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) [2024-11-10 15:14:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2024-11-10 15:14:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-10 15:14:46,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:46,853 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:46,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 15:14:47,053 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 [2024-11-10 15:14:47,053 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:47,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:47,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2085664444, now seen corresponding path program 2 times [2024-11-10 15:14:47,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:47,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118702718] [2024-11-10 15:14:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:47,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 15:14:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:47,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118702718] [2024-11-10 15:14:47,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118702718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:47,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:47,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:14:47,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519851200] [2024-11-10 15:14:47,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:47,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:14:47,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:14:47,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:14:47,140 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:47,157 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2024-11-10 15:14:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:14:47,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) 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 19 [2024-11-10 15:14:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:47,158 INFO L225 Difference]: With dead ends: 50 [2024-11-10 15:14:47,158 INFO L226 Difference]: Without dead ends: 50 [2024-11-10 15:14:47,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:14:47,158 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:47,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 26 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-10 15:14:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-10 15:14:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2024-11-10 15:14:47,161 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 19 [2024-11-10 15:14:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:47,161 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2024-11-10 15:14:47,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:47,161 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2024-11-10 15:14:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-10 15:14:47,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:47,162 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:47,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 15:14:47,162 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:47,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2085664445, now seen corresponding path program 1 times [2024-11-10 15:14:47,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:47,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384246554] [2024-11-10 15:14:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:47,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:47,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384246554] [2024-11-10 15:14:47,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384246554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:47,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:47,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:14:47,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17809373] [2024-11-10 15:14:47,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:47,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:14:47,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:47,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:14:47,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:14:47,277 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:47,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:47,314 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2024-11-10 15:14:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:14:47,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 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 19 [2024-11-10 15:14:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:47,315 INFO L225 Difference]: With dead ends: 80 [2024-11-10 15:14:47,315 INFO L226 Difference]: Without dead ends: 80 [2024-11-10 15:14:47,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:14:47,315 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:47,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-10 15:14:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2024-11-10 15:14:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 76 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2024-11-10 15:14:47,319 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 19 [2024-11-10 15:14:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:47,319 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2024-11-10 15:14:47,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2024-11-10 15:14:47,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 15:14:47,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:47,320 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:47,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 15:14:47,320 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:47,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:47,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1580226285, now seen corresponding path program 1 times [2024-11-10 15:14:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:47,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124264500] [2024-11-10 15:14:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:47,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:47,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124264500] [2024-11-10 15:14:47,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124264500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:47,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012990124] [2024-11-10 15:14:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:47,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:47,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:47,386 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:47,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:14:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:47,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 15:14:47,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:47,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:47,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-10 15:14:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012990124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:47,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:47,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-10 15:14:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931075889] [2024-11-10 15:14:47,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:47,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:14:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:47,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:14:47,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:14:47,649 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 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) [2024-11-10 15:14:47,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:47,730 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2024-11-10 15:14:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:14:47,730 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 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) Word has length 26 [2024-11-10 15:14:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:47,731 INFO L225 Difference]: With dead ends: 82 [2024-11-10 15:14:47,731 INFO L226 Difference]: Without dead ends: 82 [2024-11-10 15:14:47,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:14:47,732 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 84 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:47,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 54 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-10 15:14:47,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2024-11-10 15:14:47,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 77 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2024-11-10 15:14:47,739 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 26 [2024-11-10 15:14:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:47,740 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2024-11-10 15:14:47,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 9 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) [2024-11-10 15:14:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2024-11-10 15:14:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-10 15:14:47,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:47,741 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-10 15:14:47,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 15:14:47,941 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 [2024-11-10 15:14:47,942 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:47,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1803991555, now seen corresponding path program 2 times [2024-11-10 15:14:47,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:47,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307930051] [2024-11-10 15:14:47,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:47,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:48,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:48,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307930051] [2024-11-10 15:14:48,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307930051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:48,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229875246] [2024-11-10 15:14:48,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:48,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:48,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:48,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:48,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:14:48,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:14:48,079 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:48,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 15:14:48,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 15:14:48,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:14:48,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229875246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:48,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:14:48,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-10 15:14:48,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601452581] [2024-11-10 15:14:48,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:48,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:14:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:48,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:14:48,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:14:48,146 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:48,203 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2024-11-10 15:14:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:14:48,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-10 15:14:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:48,204 INFO L225 Difference]: With dead ends: 68 [2024-11-10 15:14:48,204 INFO L226 Difference]: Without dead ends: 68 [2024-11-10 15:14:48,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:14:48,205 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:48,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 53 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:48,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-10 15:14:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-10 15:14:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1639344262295082) internal successors, (71), 65 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2024-11-10 15:14:48,209 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 27 [2024-11-10 15:14:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:48,209 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2024-11-10 15:14:48,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2024-11-10 15:14:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-10 15:14:48,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:48,212 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:48,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 15:14:48,413 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 [2024-11-10 15:14:48,413 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:48,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:48,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1892116079, now seen corresponding path program 1 times [2024-11-10 15:14:48,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:48,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484326424] [2024-11-10 15:14:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:48,458 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:48,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484326424] [2024-11-10 15:14:48,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484326424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:48,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565140129] [2024-11-10 15:14:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:48,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:48,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:48,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:48,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:14:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:48,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 15:14:48,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:48,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:48,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565140129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:48,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:48,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-11-10 15:14:48,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631595376] [2024-11-10 15:14:48,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:48,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:14:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:14:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:14:48,644 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:48,773 INFO L93 Difference]: Finished difference Result 144 states and 162 transitions. [2024-11-10 15:14:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:14:48,773 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 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 30 [2024-11-10 15:14:48,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:48,774 INFO L225 Difference]: With dead ends: 144 [2024-11-10 15:14:48,774 INFO L226 Difference]: Without dead ends: 144 [2024-11-10 15:14:48,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2024-11-10 15:14:48,775 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 77 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:48,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 103 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-10 15:14:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2024-11-10 15:14:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.2) internal successors, (162), 139 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2024-11-10 15:14:48,782 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 30 [2024-11-10 15:14:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:48,785 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2024-11-10 15:14:48,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2024-11-10 15:14:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-10 15:14:48,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:48,786 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 15:14:48,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 15:14:48,987 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 [2024-11-10 15:14:48,987 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:48,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash 702873251, now seen corresponding path program 1 times [2024-11-10 15:14:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:48,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997426365] [2024-11-10 15:14:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:48,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 41 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997426365] [2024-11-10 15:14:49,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997426365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740232394] [2024-11-10 15:14:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:49,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:49,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:49,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 15:14:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:49,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:14:49,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:49,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740232394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:49,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:49,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-10 15:14:49,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939778047] [2024-11-10 15:14:49,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:49,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:14:49,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:14:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:14:49,293 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:49,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:49,424 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2024-11-10 15:14:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:14:49,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 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 37 [2024-11-10 15:14:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:49,425 INFO L225 Difference]: With dead ends: 140 [2024-11-10 15:14:49,425 INFO L226 Difference]: Without dead ends: 140 [2024-11-10 15:14:49,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:14:49,426 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:49,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 94 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:49,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-10 15:14:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-10 15:14:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.1777777777777778) internal successors, (159), 139 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2024-11-10 15:14:49,429 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 37 [2024-11-10 15:14:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:49,429 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2024-11-10 15:14:49,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2024-11-10 15:14:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-10 15:14:49,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:49,430 INFO L215 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-10 15:14:49,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 15:14:49,634 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 [2024-11-10 15:14:49,634 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:49,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1641118037, now seen corresponding path program 2 times [2024-11-10 15:14:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:49,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441949849] [2024-11-10 15:14:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 15:14:49,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441949849] [2024-11-10 15:14:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441949849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36342664] [2024-11-10 15:14:49,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:49,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:49,754 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:49,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 15:14:49,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:14:49,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:49,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:14:49,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:49,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 15:14:49,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:14:49,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:14:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 15:14:50,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:14:50,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36342664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:50,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:14:50,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2024-11-10 15:14:50,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564820640] [2024-11-10 15:14:50,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:50,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 15:14:50,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 15:14:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:14:50,141 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:50,197 INFO L93 Difference]: Finished difference Result 139 states and 156 transitions. [2024-11-10 15:14:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:14:50,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-10 15:14:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:50,197 INFO L225 Difference]: With dead ends: 139 [2024-11-10 15:14:50,197 INFO L226 Difference]: Without dead ends: 139 [2024-11-10 15:14:50,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:14:50,198 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:50,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:50,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-10 15:14:50,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-10 15:14:50,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 138 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) [2024-11-10 15:14:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2024-11-10 15:14:50,201 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 42 [2024-11-10 15:14:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:50,201 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2024-11-10 15:14:50,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2024-11-10 15:14:50,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 15:14:50,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:50,202 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:50,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 15:14:50,405 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 [2024-11-10 15:14:50,406 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:50,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1969208297, now seen corresponding path program 1 times [2024-11-10 15:14:50,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:50,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077579019] [2024-11-10 15:14:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:50,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 27 proven. 73 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 15:14:50,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:50,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077579019] [2024-11-10 15:14:50,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077579019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:50,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919914802] [2024-11-10 15:14:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:50,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:50,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:50,529 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:50,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 15:14:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:50,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 15:14:50,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 55 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 15:14:50,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:50,880 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 55 proven. 44 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-10 15:14:50,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919914802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:50,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:50,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2024-11-10 15:14:50,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229445641] [2024-11-10 15:14:50,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:50,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 15:14:50,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:50,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 15:14:50,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:14:50,882 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:51,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:51,144 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2024-11-10 15:14:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:14:51,144 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 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 45 [2024-11-10 15:14:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:51,146 INFO L225 Difference]: With dead ends: 132 [2024-11-10 15:14:51,146 INFO L226 Difference]: Without dead ends: 132 [2024-11-10 15:14:51,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 79 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:14:51,147 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:51,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 107 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:51,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-10 15:14:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-10 15:14:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 128 states have (on average 1.1328125) internal successors, (145), 131 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) [2024-11-10 15:14:51,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 145 transitions. [2024-11-10 15:14:51,152 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 145 transitions. Word has length 45 [2024-11-10 15:14:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:51,153 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 145 transitions. [2024-11-10 15:14:51,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 15 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 145 transitions. [2024-11-10 15:14:51,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-10 15:14:51,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:51,154 INFO L215 NwaCegarLoop]: trace histogram [12, 10, 9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-10 15:14:51,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 15:14:51,354 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 [2024-11-10 15:14:51,355 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:51,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:51,355 INFO L85 PathProgramCache]: Analyzing trace with hash -239865727, now seen corresponding path program 2 times [2024-11-10 15:14:51,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:51,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858760018] [2024-11-10 15:14:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:51,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 134 proven. 114 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 15:14:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858760018] [2024-11-10 15:14:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858760018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84898665] [2024-11-10 15:14:51,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:51,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:51,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:51,616 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:51,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 15:14:51,684 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:14:51,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:51,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 15:14:51,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:51,950 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 47 proven. 182 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 15:14:51,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 47 proven. 182 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-10 15:14:52,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84898665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:52,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:52,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 20 [2024-11-10 15:14:52,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388782461] [2024-11-10 15:14:52,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:52,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 15:14:52,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:52,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 15:14:52,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:14:52,068 INFO L87 Difference]: Start difference. First operand 132 states and 145 transitions. Second operand has 20 states, 20 states have (on average 5.55) internal successors, (111), 20 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) [2024-11-10 15:14:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:52,358 INFO L93 Difference]: Finished difference Result 169 states and 181 transitions. [2024-11-10 15:14:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 15:14:52,358 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.55) internal successors, (111), 20 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) Word has length 68 [2024-11-10 15:14:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:52,359 INFO L225 Difference]: With dead ends: 169 [2024-11-10 15:14:52,359 INFO L226 Difference]: Without dead ends: 169 [2024-11-10 15:14:52,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2024-11-10 15:14:52,360 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 44 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:52,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 141 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-10 15:14:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2024-11-10 15:14:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.1) internal successors, (176), 163 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 176 transitions. [2024-11-10 15:14:52,365 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 176 transitions. Word has length 68 [2024-11-10 15:14:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:52,366 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 176 transitions. [2024-11-10 15:14:52,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.55) internal successors, (111), 20 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) [2024-11-10 15:14:52,366 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 176 transitions. [2024-11-10 15:14:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-10 15:14:52,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:52,368 INFO L215 NwaCegarLoop]: trace histogram [17, 14, 13, 13, 13, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-10 15:14:52,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 15:14:52,568 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 [2024-11-10 15:14:52,569 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:52,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:52,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1535999961, now seen corresponding path program 3 times [2024-11-10 15:14:52,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:52,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664591965] [2024-11-10 15:14:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:52,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 237 proven. 42 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-10 15:14:52,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664591965] [2024-11-10 15:14:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664591965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685089610] [2024-11-10 15:14:52,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:14:52,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:52,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:52,871 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:52,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 15:14:52,961 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-10 15:14:52,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:52,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 15:14:52,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 237 proven. 42 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-10 15:14:53,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:53,167 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 237 proven. 42 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-10 15:14:53,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685089610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:53,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:53,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-10 15:14:53,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888747055] [2024-11-10 15:14:53,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:53,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:14:53,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:53,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:14:53,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:14:53,169 INFO L87 Difference]: Start difference. First operand 164 states and 176 transitions. Second operand has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:53,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:53,508 INFO L93 Difference]: Finished difference Result 199 states and 222 transitions. [2024-11-10 15:14:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:14:53,508 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 96 [2024-11-10 15:14:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:53,509 INFO L225 Difference]: With dead ends: 199 [2024-11-10 15:14:53,509 INFO L226 Difference]: Without dead ends: 199 [2024-11-10 15:14:53,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-11-10 15:14:53,510 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:53,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 160 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:14:53,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-10 15:14:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 193. [2024-11-10 15:14:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 1.1428571428571428) internal successors, (216), 192 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 216 transitions. [2024-11-10 15:14:53,513 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 216 transitions. Word has length 96 [2024-11-10 15:14:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:53,514 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 216 transitions. [2024-11-10 15:14:53,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.5) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 216 transitions. [2024-11-10 15:14:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 15:14:53,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:53,515 INFO L215 NwaCegarLoop]: trace histogram [17, 14, 14, 13, 13, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-10 15:14:53,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 15:14:53,719 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 [2024-11-10 15:14:53,720 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:53,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:53,721 INFO L85 PathProgramCache]: Analyzing trace with hash -371358535, now seen corresponding path program 1 times [2024-11-10 15:14:53,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:53,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517789227] [2024-11-10 15:14:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:53,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-10 15:14:54,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:54,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517789227] [2024-11-10 15:14:54,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517789227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:54,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920734929] [2024-11-10 15:14:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:54,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:54,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:54,072 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:54,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 15:14:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:54,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-10 15:14:54,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:54,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 15:14:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-10 15:14:54,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-10 15:14:54,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920734929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:54,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:54,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-10 15:14:54,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095525631] [2024-11-10 15:14:54,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:54,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:14:54,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:54,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:14:54,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:14:54,908 INFO L87 Difference]: Start difference. First operand 193 states and 216 transitions. Second operand has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:55,172 INFO L93 Difference]: Finished difference Result 200 states and 218 transitions. [2024-11-10 15:14:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:14:55,173 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-10 15:14:55,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:55,174 INFO L225 Difference]: With dead ends: 200 [2024-11-10 15:14:55,174 INFO L226 Difference]: Without dead ends: 200 [2024-11-10 15:14:55,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2024-11-10 15:14:55,174 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:55,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 148 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:55,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-10 15:14:55,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 194. [2024-11-10 15:14:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.1157894736842104) internal successors, (212), 193 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 212 transitions. [2024-11-10 15:14:55,177 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 212 transitions. Word has length 97 [2024-11-10 15:14:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:55,178 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 212 transitions. [2024-11-10 15:14:55,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 18 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 212 transitions. [2024-11-10 15:14:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-10 15:14:55,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:55,178 INFO L215 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:55,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 15:14:55,382 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 [2024-11-10 15:14:55,383 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:55,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:55,383 INFO L85 PathProgramCache]: Analyzing trace with hash -966727209, now seen corresponding path program 2 times [2024-11-10 15:14:55,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:55,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139639990] [2024-11-10 15:14:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 190 proven. 172 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-10 15:14:55,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:55,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139639990] [2024-11-10 15:14:55,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139639990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:55,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807452187] [2024-11-10 15:14:55,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:55,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:55,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:55,568 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:55,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 15:14:55,647 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 15:14:55,647 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:55,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 15:14:55,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:56,257 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_24| Int) (|v_ULTIMATE.start_main_~#mask~0#1.base_19| Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_24|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_24| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_19| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_19|) 0) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_24| v_DerPreprocessor_1) |v_ULTIMATE.start_main_~#mask~0#1.base_19| v_DerPreprocessor_2) |v_ULTIMATE.start_main_~#b~0#1.base_24|) v_DerPreprocessor_1))) is different from true [2024-11-10 15:14:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-10 15:14:56,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:14:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807452187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:56,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:14:56,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2024-11-10 15:14:56,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229908241] [2024-11-10 15:14:56,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:56,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:14:56,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:14:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2024-11-10 15:14:56,276 INFO L87 Difference]: Start difference. First operand 194 states and 212 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:56,299 INFO L93 Difference]: Finished difference Result 196 states and 213 transitions. [2024-11-10 15:14:56,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:14:56,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 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 99 [2024-11-10 15:14:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:56,300 INFO L225 Difference]: With dead ends: 196 [2024-11-10 15:14:56,300 INFO L226 Difference]: Without dead ends: 193 [2024-11-10 15:14:56,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2024-11-10 15:14:56,301 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:56,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 23 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 30 Unchecked, 0.0s Time] [2024-11-10 15:14:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-10 15:14:56,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-10 15:14:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 189 states have (on average 1.0952380952380953) internal successors, (207), 192 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 207 transitions. [2024-11-10 15:14:56,307 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 207 transitions. Word has length 99 [2024-11-10 15:14:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:56,307 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 207 transitions. [2024-11-10 15:14:56,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 207 transitions. [2024-11-10 15:14:56,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-10 15:14:56,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:56,308 INFO L215 NwaCegarLoop]: trace histogram [15, 11, 11, 11, 11, 5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:56,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 15:14:56,512 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 [2024-11-10 15:14:56,513 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:56,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash -966658531, now seen corresponding path program 1 times [2024-11-10 15:14:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:56,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397076769] [2024-11-10 15:14:56,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:56,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 282 proven. 99 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-10 15:14:56,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:56,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397076769] [2024-11-10 15:14:56,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397076769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:56,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219479480] [2024-11-10 15:14:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:56,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:56,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:56,903 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:56,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 15:14:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:57,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 15:14:57,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 240 proven. 122 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 15:14:57,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 240 proven. 122 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-10 15:14:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219479480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:57,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 18 [2024-11-10 15:14:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315220001] [2024-11-10 15:14:57,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:57,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:14:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:14:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-10 15:14:57,341 INFO L87 Difference]: Start difference. First operand 193 states and 207 transitions. Second operand has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:57,718 INFO L93 Difference]: Finished difference Result 159 states and 169 transitions. [2024-11-10 15:14:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 15:14:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 0 states have call successors, (0), 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 99 [2024-11-10 15:14:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:57,719 INFO L225 Difference]: With dead ends: 159 [2024-11-10 15:14:57,719 INFO L226 Difference]: Without dead ends: 159 [2024-11-10 15:14:57,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2024-11-10 15:14:57,720 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 55 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:57,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 189 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:14:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-10 15:14:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-10 15:14:57,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.0903225806451613) internal successors, (169), 158 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2024-11-10 15:14:57,723 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 99 [2024-11-10 15:14:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:57,723 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2024-11-10 15:14:57,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2024-11-10 15:14:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-10 15:14:57,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:57,724 INFO L215 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:57,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 15:14:57,927 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 [2024-11-10 15:14:57,928 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:57,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash 371984465, now seen corresponding path program 2 times [2024-11-10 15:14:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:57,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704166379] [2024-11-10 15:14:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 106 proven. 376 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-10 15:14:58,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:58,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704166379] [2024-11-10 15:14:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704166379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:58,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804404316] [2024-11-10 15:14:58,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:58,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:58,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:58,164 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:58,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 15:14:58,259 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:14:58,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:58,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 15:14:58,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 216 proven. 266 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-10 15:14:58,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 216 proven. 266 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-10 15:14:58,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804404316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:58,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:58,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2024-11-10 15:14:58,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582488398] [2024-11-10 15:14:58,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:58,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 15:14:58,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:58,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 15:14:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:14:58,570 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 19 states, 19 states have (on average 6.105263157894737) internal successors, (116), 19 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) [2024-11-10 15:14:58,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:58,852 INFO L93 Difference]: Finished difference Result 159 states and 168 transitions. [2024-11-10 15:14:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 15:14:58,854 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.105263157894737) internal successors, (116), 19 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) Word has length 109 [2024-11-10 15:14:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:58,855 INFO L225 Difference]: With dead ends: 159 [2024-11-10 15:14:58,855 INFO L226 Difference]: Without dead ends: 159 [2024-11-10 15:14:58,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 205 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 15:14:58,855 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 66 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:58,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 149 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:14:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-10 15:14:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-10 15:14:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 155 states have (on average 1.0838709677419356) internal successors, (168), 158 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:58,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2024-11-10 15:14:58,862 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 109 [2024-11-10 15:14:58,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:58,862 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2024-11-10 15:14:58,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.105263157894737) internal successors, (116), 19 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) [2024-11-10 15:14:58,862 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2024-11-10 15:14:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-10 15:14:58,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:58,863 INFO L215 NwaCegarLoop]: trace histogram [18, 14, 14, 14, 14, 5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:58,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 15:14:59,063 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 [2024-11-10 15:14:59,064 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:59,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:59,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1041658139, now seen corresponding path program 3 times [2024-11-10 15:14:59,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:59,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774657353] [2024-11-10 15:14:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:59,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-10 15:14:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774657353] [2024-11-10 15:14:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774657353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075315980] [2024-11-10 15:14:59,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:14:59,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:59,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:59,230 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:14:59,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 15:14:59,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 15:14:59,323 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:59,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 15:14:59,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:59,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 15:14:59,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:14:59,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-10 15:14:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2024-11-10 15:14:59,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2024-11-10 15:14:59,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075315980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:59,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:59,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 14 [2024-11-10 15:14:59,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060451644] [2024-11-10 15:14:59,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:59,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 15:14:59,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 15:14:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:14:59,972 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:00,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:00,159 INFO L93 Difference]: Finished difference Result 417 states and 452 transitions. [2024-11-10 15:15:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:15:00,159 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-10 15:15:00,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:00,160 INFO L225 Difference]: With dead ends: 417 [2024-11-10 15:15:00,160 INFO L226 Difference]: Without dead ends: 417 [2024-11-10 15:15:00,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2024-11-10 15:15:00,161 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 259 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:00,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 191 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:15:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-10 15:15:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 232. [2024-11-10 15:15:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 228 states have (on average 1.0921052631578947) internal successors, (249), 231 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 249 transitions. [2024-11-10 15:15:00,165 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 249 transitions. Word has length 114 [2024-11-10 15:15:00,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:00,166 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 249 transitions. [2024-11-10 15:15:00,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:00,166 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 249 transitions. [2024-11-10 15:15:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-10 15:15:00,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:00,167 INFO L215 NwaCegarLoop]: trace histogram [23, 20, 19, 19, 19, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-10 15:15:00,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 15:15:00,367 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 [2024-11-10 15:15:00,368 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:00,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1780788583, now seen corresponding path program 4 times [2024-11-10 15:15:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:00,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71691594] [2024-11-10 15:15:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:00,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 217 proven. 777 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-10 15:15:00,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:00,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71691594] [2024-11-10 15:15:00,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71691594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:00,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44628849] [2024-11-10 15:15:00,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:15:00,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:00,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:00,746 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:15:00,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 15:15:00,858 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:15:00,858 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:00,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-10 15:15:00,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 264 proven. 730 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-10 15:15:01,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 264 proven. 730 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-10 15:15:01,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44628849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:01,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:01,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 41 [2024-11-10 15:15:01,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134634972] [2024-11-10 15:15:01,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:01,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 15:15:01,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:01,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 15:15:01,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=1205, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 15:15:01,506 INFO L87 Difference]: Start difference. First operand 232 states and 249 transitions. Second operand has 41 states, 41 states have (on average 5.7560975609756095) internal successors, (236), 41 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:02,470 INFO L93 Difference]: Finished difference Result 410 states and 438 transitions. [2024-11-10 15:15:02,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-10 15:15:02,470 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.7560975609756095) internal successors, (236), 41 states have internal predecessors, (236), 0 states have call successors, (0), 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 126 [2024-11-10 15:15:02,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:02,472 INFO L225 Difference]: With dead ends: 410 [2024-11-10 15:15:02,472 INFO L226 Difference]: Without dead ends: 410 [2024-11-10 15:15:02,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 227 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3782 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2343, Invalid=6969, Unknown=0, NotChecked=0, Total=9312 [2024-11-10 15:15:02,475 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 76 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:02,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 206 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:15:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-10 15:15:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 401. [2024-11-10 15:15:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 397 states have (on average 1.0755667506297228) internal successors, (427), 400 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 427 transitions. [2024-11-10 15:15:02,481 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 427 transitions. Word has length 126 [2024-11-10 15:15:02,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:02,481 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 427 transitions. [2024-11-10 15:15:02,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.7560975609756095) internal successors, (236), 41 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 427 transitions. [2024-11-10 15:15:02,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-10 15:15:02,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:02,482 INFO L215 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:15:02,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 15:15:02,683 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 [2024-11-10 15:15:02,683 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:02,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1228204618, now seen corresponding path program 1 times [2024-11-10 15:15:02,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:02,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387195202] [2024-11-10 15:15:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:02,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 219 proven. 788 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-10 15:15:02,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:02,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387195202] [2024-11-10 15:15:02,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387195202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:02,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450795000] [2024-11-10 15:15:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:02,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:02,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:02,984 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:15:02,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 15:15:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:03,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 15:15:03,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 521 proven. 486 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-10 15:15:03,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 521 proven. 486 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-10 15:15:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450795000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:03,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:03,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 22 [2024-11-10 15:15:03,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788605892] [2024-11-10 15:15:03,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:03,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 15:15:03,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:03,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 15:15:03,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:15:03,487 INFO L87 Difference]: Start difference. First operand 401 states and 427 transitions. Second operand has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:03,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:03,923 INFO L93 Difference]: Finished difference Result 401 states and 422 transitions. [2024-11-10 15:15:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 15:15:03,924 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 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 165 [2024-11-10 15:15:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:03,925 INFO L225 Difference]: With dead ends: 401 [2024-11-10 15:15:03,925 INFO L226 Difference]: Without dead ends: 401 [2024-11-10 15:15:03,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 313 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=1482, Unknown=0, NotChecked=0, Total=1980 [2024-11-10 15:15:03,926 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 72 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:03,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 182 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:15:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-10 15:15:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-11-10 15:15:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 397 states have (on average 1.0629722921914357) internal successors, (422), 400 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 422 transitions. [2024-11-10 15:15:03,931 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 422 transitions. Word has length 165 [2024-11-10 15:15:03,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:03,932 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 422 transitions. [2024-11-10 15:15:03,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 422 transitions. [2024-11-10 15:15:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-10 15:15:03,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:03,933 INFO L215 NwaCegarLoop]: trace histogram [25, 20, 20, 20, 20, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:15:03,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-10 15:15:04,133 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 [2024-11-10 15:15:04,133 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:04,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:04,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1973641740, now seen corresponding path program 2 times [2024-11-10 15:15:04,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:04,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373451800] [2024-11-10 15:15:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:04,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 0 proven. 1025 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-10 15:15:04,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:04,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373451800] [2024-11-10 15:15:04,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373451800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:04,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201609380] [2024-11-10 15:15:04,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:15:04,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:04,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:04,641 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:15:04,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-10 15:15:04,724 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 15:15:04,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:04,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 15:15:04,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:05,761 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#mask~0#1.base_25| Int) (v_DerPreprocessor_4 Int) (v_DerPreprocessor_3 Int) (|v_ULTIMATE.start_main_~#b~0#1.base_30| Int)) (and (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_30| v_DerPreprocessor_3) |v_ULTIMATE.start_main_~#mask~0#1.base_25| v_DerPreprocessor_4) |v_ULTIMATE.start_main_~#b~0#1.base_30|) v_DerPreprocessor_3) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_30|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_30| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_25| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#mask~0#1.base_25|) 0))) is different from true [2024-11-10 15:15:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2024-11-10 15:15:05,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:15:05,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201609380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:15:05,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:15:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-10 15:15:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161658835] [2024-11-10 15:15:05,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:15:05,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 15:15:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 15:15:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=83, Unknown=1, NotChecked=18, Total=132 [2024-11-10 15:15:05,772 INFO L87 Difference]: Start difference. First operand 401 states and 422 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:05,796 INFO L93 Difference]: Finished difference Result 400 states and 421 transitions. [2024-11-10 15:15:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:15:05,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-10 15:15:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:05,797 INFO L225 Difference]: With dead ends: 400 [2024-11-10 15:15:05,797 INFO L226 Difference]: Without dead ends: 397 [2024-11-10 15:15:05,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=83, Unknown=1, NotChecked=18, Total=132 [2024-11-10 15:15:05,798 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:05,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 26 Unchecked, 0.0s Time] [2024-11-10 15:15:05,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-10 15:15:05,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-10 15:15:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 394 states have (on average 1.0558375634517767) internal successors, (416), 396 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 416 transitions. [2024-11-10 15:15:05,812 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 416 transitions. Word has length 170 [2024-11-10 15:15:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:05,813 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 416 transitions. [2024-11-10 15:15:05,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 416 transitions. [2024-11-10 15:15:05,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-10 15:15:05,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:05,814 INFO L215 NwaCegarLoop]: trace histogram [25, 20, 20, 20, 20, 8, 8, 7, 7, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2024-11-10 15:15:05,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-10 15:15:06,015 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 [2024-11-10 15:15:06,016 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:06,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:06,016 INFO L85 PathProgramCache]: Analyzing trace with hash 140076865, now seen corresponding path program 4 times [2024-11-10 15:15:06,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:06,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998134331] [2024-11-10 15:15:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:06,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 0 proven. 1025 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-10 15:15:06,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:06,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998134331] [2024-11-10 15:15:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998134331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:06,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956108646] [2024-11-10 15:15:06,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 15:15:06,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:06,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:06,572 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:15:06,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-10 15:15:06,716 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 15:15:06,717 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:06,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-10 15:15:06,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:06,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-10 15:15:07,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-10 15:15:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 142 proven. 1065 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-10 15:15:07,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:07,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-10 15:15:07,216 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 20 treesize of output 16 [2024-11-10 15:15:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 142 proven. 1065 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-10 15:15:07,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956108646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:07,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:07,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 23] total 31 [2024-11-10 15:15:07,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054909258] [2024-11-10 15:15:07,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:07,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-10 15:15:07,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-10 15:15:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2024-11-10 15:15:07,429 INFO L87 Difference]: Start difference. First operand 397 states and 416 transitions. Second operand has 31 states, 31 states have (on average 5.096774193548387) internal successors, (158), 31 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:07,987 INFO L93 Difference]: Finished difference Result 397 states and 415 transitions. [2024-11-10 15:15:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-10 15:15:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.096774193548387) internal successors, (158), 31 states have internal predecessors, (158), 0 states have call successors, (0), 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 176 [2024-11-10 15:15:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:07,989 INFO L225 Difference]: With dead ends: 397 [2024-11-10 15:15:07,989 INFO L226 Difference]: Without dead ends: 397 [2024-11-10 15:15:07,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2024-11-10 15:15:07,989 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 49 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:07,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1037 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:15:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-10 15:15:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-10 15:15:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 394 states have (on average 1.0532994923857868) internal successors, (415), 396 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 415 transitions. [2024-11-10 15:15:07,994 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 415 transitions. Word has length 176 [2024-11-10 15:15:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:07,994 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 415 transitions. [2024-11-10 15:15:07,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.096774193548387) internal successors, (158), 31 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 415 transitions. [2024-11-10 15:15:07,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-10 15:15:07,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:07,995 INFO L215 NwaCegarLoop]: trace histogram [32, 26, 26, 26, 26, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2024-11-10 15:15:08,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-10 15:15:08,199 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 [2024-11-10 15:15:08,200 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:08,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash -881305829, now seen corresponding path program 5 times [2024-11-10 15:15:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:08,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910592697] [2024-11-10 15:15:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2174 backedges. 972 proven. 868 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-10 15:15:08,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:08,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910592697] [2024-11-10 15:15:08,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910592697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:08,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090697738] [2024-11-10 15:15:08,661 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 15:15:08,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:08,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:08,663 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) [2024-11-10 15:15:08,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-10 15:15:08,861 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-10 15:15:08,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:08,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 15:15:08,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2174 backedges. 944 proven. 929 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-10 15:15:09,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2174 backedges. 1154 proven. 719 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-10 15:15:09,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090697738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:09,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:09,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 34 [2024-11-10 15:15:09,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327489832] [2024-11-10 15:15:09,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:09,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 15:15:09,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:09,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 15:15:09,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 15:15:09,463 INFO L87 Difference]: Start difference. First operand 397 states and 415 transitions. Second operand has 34 states, 34 states have (on average 5.882352941176471) internal successors, (200), 34 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:10,231 INFO L93 Difference]: Finished difference Result 397 states and 411 transitions. [2024-11-10 15:15:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-10 15:15:10,231 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.882352941176471) internal successors, (200), 34 states have internal predecessors, (200), 0 states have call successors, (0), 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 214 [2024-11-10 15:15:10,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:10,233 INFO L225 Difference]: With dead ends: 397 [2024-11-10 15:15:10,233 INFO L226 Difference]: Without dead ends: 397 [2024-11-10 15:15:10,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 403 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=971, Invalid=3319, Unknown=0, NotChecked=0, Total=4290 [2024-11-10 15:15:10,234 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 65 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:10,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 337 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:15:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-10 15:15:10,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-10 15:15:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 394 states have (on average 1.0431472081218274) internal successors, (411), 396 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 411 transitions. [2024-11-10 15:15:10,254 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 411 transitions. Word has length 214 [2024-11-10 15:15:10,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:10,255 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 411 transitions. [2024-11-10 15:15:10,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.882352941176471) internal successors, (200), 34 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:10,255 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 411 transitions. [2024-11-10 15:15:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-10 15:15:10,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:10,256 INFO L215 NwaCegarLoop]: trace histogram [33, 27, 27, 27, 27, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2024-11-10 15:15:10,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-10 15:15:10,460 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 [2024-11-10 15:15:10,460 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:10,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash 115856553, now seen corresponding path program 6 times [2024-11-10 15:15:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:10,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436044579] [2024-11-10 15:15:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 0 proven. 957 refuted. 0 times theorem prover too weak. 1359 trivial. 0 not checked. [2024-11-10 15:15:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:11,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436044579] [2024-11-10 15:15:11,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436044579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:11,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257374445] [2024-11-10 15:15:11,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 15:15:11,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:11,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:11,017 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) [2024-11-10 15:15:11,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-10 15:15:11,150 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-10 15:15:11,150 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:11,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 15:15:11,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:11,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:15:11,162 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 [2024-11-10 15:15:11,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-10 15:15:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2289 trivial. 0 not checked. [2024-11-10 15:15:11,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:15:11,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257374445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:15:11,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:15:11,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2024-11-10 15:15:11,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337346607] [2024-11-10 15:15:11,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:15:11,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:15:11,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:15:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:15:11,701 INFO L87 Difference]: Start difference. First operand 397 states and 411 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:11,723 INFO L93 Difference]: Finished difference Result 396 states and 410 transitions. [2024-11-10 15:15:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:15:11,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-10 15:15:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:11,724 INFO L225 Difference]: With dead ends: 396 [2024-11-10 15:15:11,724 INFO L226 Difference]: Without dead ends: 364 [2024-11-10 15:15:11,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:15:11,725 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 41 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:11,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 36 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:15:11,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-10 15:15:11,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-11-10 15:15:11,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 1.0359116022099448) internal successors, (375), 363 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:11,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 375 transitions. [2024-11-10 15:15:11,729 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 375 transitions. Word has length 219 [2024-11-10 15:15:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:11,729 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 375 transitions. [2024-11-10 15:15:11,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 375 transitions. [2024-11-10 15:15:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-10 15:15:11,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:11,730 INFO L215 NwaCegarLoop]: trace histogram [60, 52, 51, 51, 51, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1] [2024-11-10 15:15:11,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-10 15:15:11,934 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 [2024-11-10 15:15:11,934 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:11,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash -577829759, now seen corresponding path program 5 times [2024-11-10 15:15:11,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:11,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262794905] [2024-11-10 15:15:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:11,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:11,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7600 backedges. 5213 proven. 872 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2024-11-10 15:15:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262794905] [2024-11-10 15:15:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262794905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488311452] [2024-11-10 15:15:12,726 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 15:15:12,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:12,728 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) [2024-11-10 15:15:12,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-10 15:15:13,098 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-10 15:15:13,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:13,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 15:15:13,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7600 backedges. 5088 proven. 1424 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2024-11-10 15:15:13,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7600 backedges. 5388 proven. 1124 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2024-11-10 15:15:13,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488311452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:13,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:13,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2024-11-10 15:15:13,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980472217] [2024-11-10 15:15:13,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:13,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-10 15:15:13,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:13,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-10 15:15:13,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=1625, Unknown=0, NotChecked=0, Total=1980 [2024-11-10 15:15:13,943 INFO L87 Difference]: Start difference. First operand 364 states and 375 transitions. Second operand has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 45 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:15,255 INFO L93 Difference]: Finished difference Result 364 states and 372 transitions. [2024-11-10 15:15:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-10 15:15:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 45 states have internal predecessors, (258), 0 states have call successors, (0), 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 326 [2024-11-10 15:15:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:15,256 INFO L225 Difference]: With dead ends: 364 [2024-11-10 15:15:15,257 INFO L226 Difference]: Without dead ends: 364 [2024-11-10 15:15:15,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 621 SyntacticMatches, 6 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1458, Invalid=5682, Unknown=0, NotChecked=0, Total=7140 [2024-11-10 15:15:15,258 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 71 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:15,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 468 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 15:15:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-10 15:15:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-11-10 15:15:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 362 states have (on average 1.0276243093922652) internal successors, (372), 363 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 372 transitions. [2024-11-10 15:15:15,262 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 372 transitions. Word has length 326 [2024-11-10 15:15:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:15,263 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 372 transitions. [2024-11-10 15:15:15,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.733333333333333) internal successors, (258), 45 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 372 transitions. [2024-11-10 15:15:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-10 15:15:15,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:15,264 INFO L215 NwaCegarLoop]: trace histogram [62, 54, 53, 53, 53, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1] [2024-11-10 15:15:15,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-10 15:15:15,464 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 [2024-11-10 15:15:15,465 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:15,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1933125837, now seen corresponding path program 6 times [2024-11-10 15:15:15,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:15,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623222174] [2024-11-10 15:15:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:15,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8153 backedges. 5440 proven. 1560 refuted. 0 times theorem prover too weak. 1153 trivial. 0 not checked. [2024-11-10 15:15:16,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:16,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623222174] [2024-11-10 15:15:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623222174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:16,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198373087] [2024-11-10 15:15:16,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 15:15:16,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:16,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:16,230 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) [2024-11-10 15:15:16,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-10 15:15:17,205 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-11-10 15:15:17,206 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:17,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 965 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 15:15:17,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8153 backedges. 9 proven. 7291 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2024-11-10 15:15:18,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8153 backedges. 0 proven. 7300 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2024-11-10 15:15:19,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198373087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:19,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:19,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 50 [2024-11-10 15:15:19,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354269889] [2024-11-10 15:15:19,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:19,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-10 15:15:19,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:19,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-10 15:15:19,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2141, Unknown=0, NotChecked=0, Total=2450 [2024-11-10 15:15:19,188 INFO L87 Difference]: Start difference. First operand 364 states and 372 transitions. Second operand has 50 states, 50 states have (on average 7.02) internal successors, (351), 50 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:30,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:30,276 INFO L93 Difference]: Finished difference Result 978 states and 1004 transitions. [2024-11-10 15:15:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-11-10 15:15:30,276 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.02) internal successors, (351), 50 states have internal predecessors, (351), 0 states have call successors, (0), 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 336 [2024-11-10 15:15:30,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:30,278 INFO L225 Difference]: With dead ends: 978 [2024-11-10 15:15:30,278 INFO L226 Difference]: Without dead ends: 978 [2024-11-10 15:15:30,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23755 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=8540, Invalid=56230, Unknown=0, NotChecked=0, Total=64770 [2024-11-10 15:15:30,300 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 2264 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 4523 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 5035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 4523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:30,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2264 Valid, 1254 Invalid, 5035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 4523 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-10 15:15:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-10 15:15:30,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 964. [2024-11-10 15:15:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 962 states have (on average 1.0395010395010396) internal successors, (1000), 963 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:30,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1000 transitions. [2024-11-10 15:15:30,353 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1000 transitions. Word has length 336 [2024-11-10 15:15:30,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:30,354 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1000 transitions. [2024-11-10 15:15:30,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.02) internal successors, (351), 50 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:30,354 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1000 transitions. [2024-11-10 15:15:30,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-10 15:15:30,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:30,359 INFO L215 NwaCegarLoop]: trace histogram [63, 55, 55, 54, 54, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1] [2024-11-10 15:15:30,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-10 15:15:30,560 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 [2024-11-10 15:15:30,560 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:30,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1984758115, now seen corresponding path program 2 times [2024-11-10 15:15:30,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:30,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089829843] [2024-11-10 15:15:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:30,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8491 backedges. 2845 proven. 4822 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2024-11-10 15:15:31,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089829843] [2024-11-10 15:15:31,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089829843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598615378] [2024-11-10 15:15:31,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:15:31,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:31,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:31,384 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) [2024-11-10 15:15:31,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-10 15:15:31,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:15:31,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:31,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 15:15:31,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8491 backedges. 353 proven. 7450 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-11-10 15:15:32,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8491 backedges. 353 proven. 7450 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2024-11-10 15:15:32,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598615378] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:32,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:32,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 22] total 41 [2024-11-10 15:15:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430580915] [2024-11-10 15:15:32,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:32,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 15:15:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 15:15:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1328, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 15:15:32,562 INFO L87 Difference]: Start difference. First operand 964 states and 1000 transitions. Second operand has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 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) [2024-11-10 15:15:33,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:33,540 INFO L93 Difference]: Finished difference Result 942 states and 972 transitions. [2024-11-10 15:15:33,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-10 15:15:33,540 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 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) Word has length 342 [2024-11-10 15:15:33,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:33,542 INFO L225 Difference]: With dead ends: 942 [2024-11-10 15:15:33,542 INFO L226 Difference]: Without dead ends: 942 [2024-11-10 15:15:33,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 651 SyntacticMatches, 19 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3604 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1897, Invalid=8815, Unknown=0, NotChecked=0, Total=10712 [2024-11-10 15:15:33,544 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 58 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:33,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 287 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:15:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-10 15:15:33,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2024-11-10 15:15:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.0340425531914894) internal successors, (972), 941 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 972 transitions. [2024-11-10 15:15:33,556 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 972 transitions. Word has length 342 [2024-11-10 15:15:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:33,556 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 972 transitions. [2024-11-10 15:15:33,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 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) [2024-11-10 15:15:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 972 transitions. [2024-11-10 15:15:33,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-10 15:15:33,558 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:33,558 INFO L215 NwaCegarLoop]: trace histogram [73, 64, 64, 63, 63, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1] [2024-11-10 15:15:33,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-10 15:15:33,758 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 [2024-11-10 15:15:33,759 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:33,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash -35825095, now seen corresponding path program 3 times [2024-11-10 15:15:33,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:33,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108164173] [2024-11-10 15:15:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:33,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11475 backedges. 6752 proven. 3770 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2024-11-10 15:15:34,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108164173] [2024-11-10 15:15:34,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108164173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510432077] [2024-11-10 15:15:34,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:15:34,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:34,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:34,885 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) [2024-11-10 15:15:34,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-10 15:15:35,029 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 15:15:35,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:35,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 15:15:35,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:35,037 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 [2024-11-10 15:15:35,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:15:35,042 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 [2024-11-10 15:15:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11475 backedges. 49 proven. 3060 refuted. 0 times theorem prover too weak. 8366 trivial. 0 not checked. [2024-11-10 15:15:35,956 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 11475 backedges. 0 proven. 3109 refuted. 0 times theorem prover too weak. 8366 trivial. 0 not checked. [2024-11-10 15:15:37,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510432077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:37,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:37,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 6, 6] total 35 [2024-11-10 15:15:37,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35476835] [2024-11-10 15:15:37,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:37,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 15:15:37,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 15:15:37,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 15:15:37,515 INFO L87 Difference]: Start difference. First operand 942 states and 972 transitions. Second operand has 35 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 35 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:41,248 INFO L93 Difference]: Finished difference Result 941 states and 951 transitions. [2024-11-10 15:15:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-11-10 15:15:41,248 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 35 states have internal predecessors, (209), 0 states have call successors, (0), 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 395 [2024-11-10 15:15:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:41,250 INFO L225 Difference]: With dead ends: 941 [2024-11-10 15:15:41,251 INFO L226 Difference]: Without dead ends: 941 [2024-11-10 15:15:41,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8704 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=7275, Invalid=20781, Unknown=0, NotChecked=0, Total=28056 [2024-11-10 15:15:41,254 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 109 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:41,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 312 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 15:15:41,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-10 15:15:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 922. [2024-11-10 15:15:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 1.011943539630836) internal successors, (932), 921 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 932 transitions. [2024-11-10 15:15:41,261 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 932 transitions. Word has length 395 [2024-11-10 15:15:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:41,262 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 932 transitions. [2024-11-10 15:15:41,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.9714285714285715) internal successors, (209), 35 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 932 transitions. [2024-11-10 15:15:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2024-11-10 15:15:41,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:41,266 INFO L215 NwaCegarLoop]: trace histogram [173, 155, 154, 154, 154, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1] [2024-11-10 15:15:41,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-10 15:15:41,470 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 [2024-11-10 15:15:41,470 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:41,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash -278948801, now seen corresponding path program 7 times [2024-11-10 15:15:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815353013] [2024-11-10 15:15:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:41,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 66207 backedges. 41860 proven. 2826 refuted. 0 times theorem prover too weak. 21521 trivial. 0 not checked. [2024-11-10 15:15:43,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:43,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815353013] [2024-11-10 15:15:43,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815353013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:43,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649663991] [2024-11-10 15:15:43,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 15:15:43,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:43,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:43,743 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) [2024-11-10 15:15:43,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-10 15:15:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:44,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 15:15:44,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 66207 backedges. 40000 proven. 3251 refuted. 0 times theorem prover too weak. 22956 trivial. 0 not checked. [2024-11-10 15:15:44,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 66207 backedges. 40000 proven. 3251 refuted. 0 times theorem prover too weak. 22956 trivial. 0 not checked. [2024-11-10 15:15:45,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649663991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:45,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:45,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23, 23] total 47 [2024-11-10 15:15:45,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232131775] [2024-11-10 15:15:45,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:45,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-10 15:15:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:45,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-10 15:15:45,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1771, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 15:15:45,229 INFO L87 Difference]: Start difference. First operand 922 states and 932 transitions. Second operand has 47 states, 47 states have (on average 6.595744680851064) internal successors, (310), 47 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) [2024-11-10 15:15:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:47,963 INFO L93 Difference]: Finished difference Result 1019 states and 1029 transitions. [2024-11-10 15:15:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-10 15:15:47,963 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.595744680851064) internal successors, (310), 47 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) Word has length 921 [2024-11-10 15:15:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:47,966 INFO L225 Difference]: With dead ends: 1019 [2024-11-10 15:15:47,966 INFO L226 Difference]: Without dead ends: 1019 [2024-11-10 15:15:47,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1958 GetRequests, 1803 SyntacticMatches, 20 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5578 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3492, Invalid=15140, Unknown=0, NotChecked=0, Total=18632 [2024-11-10 15:15:47,969 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 88 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 4391 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:47,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1241 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4391 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-10 15:15:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2024-11-10 15:15:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 1016. [2024-11-10 15:15:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 1.0108374384236454) internal successors, (1026), 1015 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1026 transitions. [2024-11-10 15:15:47,977 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1026 transitions. Word has length 921 [2024-11-10 15:15:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:47,977 INFO L471 AbstractCegarLoop]: Abstraction has 1016 states and 1026 transitions. [2024-11-10 15:15:47,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.595744680851064) internal successors, (310), 47 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) [2024-11-10 15:15:47,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1026 transitions. [2024-11-10 15:15:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2024-11-10 15:15:47,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:47,983 INFO L215 NwaCegarLoop]: trace histogram [191, 173, 172, 172, 172, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1] [2024-11-10 15:15:48,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-10 15:15:48,187 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 [2024-11-10 15:15:48,188 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:48,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:48,191 INFO L85 PathProgramCache]: Analyzing trace with hash -126310509, now seen corresponding path program 8 times [2024-11-10 15:15:48,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:48,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874523610] [2024-11-10 15:15:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:48,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:15:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 81534 backedges. 50047 proven. 1233 refuted. 0 times theorem prover too weak. 30254 trivial. 0 not checked. [2024-11-10 15:15:50,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:15:50,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874523610] [2024-11-10 15:15:50,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874523610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:15:50,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527972626] [2024-11-10 15:15:50,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:15:50,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:15:50,560 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:15:50,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-10 15:15:51,049 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:15:51,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:15:51,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-10 15:15:51,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:15:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 81534 backedges. 56108 proven. 5414 refuted. 0 times theorem prover too weak. 20012 trivial. 0 not checked. [2024-11-10 15:15:51,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:15:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 81534 backedges. 56108 proven. 5414 refuted. 0 times theorem prover too weak. 20012 trivial. 0 not checked. [2024-11-10 15:15:52,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527972626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:15:52,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:15:52,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 27, 27] total 54 [2024-11-10 15:15:52,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581504626] [2024-11-10 15:15:52,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:15:52,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-10 15:15:52,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:15:52,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-10 15:15:52,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2024-11-10 15:15:52,745 INFO L87 Difference]: Start difference. First operand 1016 states and 1026 transitions. Second operand has 54 states, 54 states have (on average 6.592592592592593) internal successors, (356), 54 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:15:56,698 INFO L93 Difference]: Finished difference Result 1165 states and 1177 transitions. [2024-11-10 15:15:56,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-10 15:15:56,698 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.592592592592593) internal successors, (356), 54 states have internal predecessors, (356), 0 states have call successors, (0), 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 1011 [2024-11-10 15:15:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:15:56,701 INFO L225 Difference]: With dead ends: 1165 [2024-11-10 15:15:56,701 INFO L226 Difference]: Without dead ends: 1165 [2024-11-10 15:15:56,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2154 GetRequests, 1975 SyntacticMatches, 23 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7738 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4347, Invalid=20459, Unknown=0, NotChecked=0, Total=24806 [2024-11-10 15:15:56,703 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 98 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 5081 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 5096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 5081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-10 15:15:56,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1415 Invalid, 5096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 5081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-10 15:15:56,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2024-11-10 15:15:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1073. [2024-11-10 15:15:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 1.0111940298507462) internal successors, (1084), 1072 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1084 transitions. [2024-11-10 15:15:56,711 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1084 transitions. Word has length 1011 [2024-11-10 15:15:56,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:15:56,711 INFO L471 AbstractCegarLoop]: Abstraction has 1073 states and 1084 transitions. [2024-11-10 15:15:56,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.592592592592593) internal successors, (356), 54 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:15:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1084 transitions. [2024-11-10 15:15:56,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2024-11-10 15:15:56,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:15:56,717 INFO L215 NwaCegarLoop]: trace histogram [200, 182, 181, 181, 181, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1] [2024-11-10 15:15:56,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-10 15:15:56,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:15:56,922 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:15:56,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:15:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash 611389441, now seen corresponding path program 9 times [2024-11-10 15:15:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:15:56,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248096125] [2024-11-10 15:15:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:15:56,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:15:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:16:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 89805 backedges. 61551 proven. 7146 refuted. 0 times theorem prover too weak. 21108 trivial. 0 not checked. [2024-11-10 15:16:00,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:16:00,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248096125] [2024-11-10 15:16:00,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248096125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:16:00,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139651336] [2024-11-10 15:16:00,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:16:00,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:16:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:16:00,192 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:16:00,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-10 15:16:00,651 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-10 15:16:00,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:16:00,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-10 15:16:00,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:16:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 89805 backedges. 11928 proven. 429 refuted. 0 times theorem prover too weak. 77448 trivial. 0 not checked. [2024-11-10 15:16:00,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:16:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 89805 backedges. 11928 proven. 429 refuted. 0 times theorem prover too weak. 77448 trivial. 0 not checked. [2024-11-10 15:16:01,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139651336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:16:01,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:16:01,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 15, 15] total 62 [2024-11-10 15:16:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759757895] [2024-11-10 15:16:01,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:16:01,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-10 15:16:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:16:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-10 15:16:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=3289, Unknown=0, NotChecked=0, Total=3782 [2024-11-10 15:16:01,560 INFO L87 Difference]: Start difference. First operand 1073 states and 1084 transitions. Second operand has 62 states, 62 states have (on average 5.387096774193548) internal successors, (334), 62 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)