./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.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/ArraysOfVariableLength.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 eb589a592aff310a2662d7a22b89559cebd75929901bc5e2cc7816fe45d47c92 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:14:24,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:14:24,916 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:14:24,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:14:24,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:14:24,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:14:24,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:14:24,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:14:24,942 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:14:24,942 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:14:24,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:14:24,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:14:24,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:14:24,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:14:24,944 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:14:24,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:14:24,945 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:14:24,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:14:24,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:14:24,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:14:24,948 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:14:24,948 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:14:24,949 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:14:24,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:14:24,949 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:14:24,950 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:14:24,950 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:14:24,950 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:14:24,950 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:14:24,951 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:14:24,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:14:24,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:14:24,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:14:24,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:14:24,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:14:24,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:14:24,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:14:24,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:14:24,961 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:14:24,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:14:24,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:14:24,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:14:24,962 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb589a592aff310a2662d7a22b89559cebd75929901bc5e2cc7816fe45d47c92 [2024-11-10 15:14:25,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:14:25,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:14:25,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:14:25,231 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:14:25,231 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:14:25,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2024-11-10 15:14:26,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:14:26,866 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:14:26,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength.c [2024-11-10 15:14:26,875 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23576250c/803bfc5eac3244959805d4ac2f2237e8/FLAG76ceea9e9 [2024-11-10 15:14:26,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23576250c/803bfc5eac3244959805d4ac2f2237e8 [2024-11-10 15:14:26,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:14:26,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:14:26,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:14:26,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:14:26,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:14:26,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:14:26" (1/1) ... [2024-11-10 15:14:26,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdca131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:26, skipping insertion in model container [2024-11-10 15:14:26,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:14:26" (1/1) ... [2024-11-10 15:14:26,923 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:14:27,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:14:27,139 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:14:27,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:14:27,165 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:14:27,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27 WrapperNode [2024-11-10 15:14:27,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:14:27,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:14:27,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:14:27,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:14:27,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,204 INFO L138 Inliner]: procedures = 8, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2024-11-10 15:14:27,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:14:27,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:14:27,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:14:27,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:14:27,216 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,218 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,231 INFO L175 MemorySlicer]: Split 3 memory accesses to 1 slices as follows [3]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 1 writes are split as follows [1]. [2024-11-10 15:14:27,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,235 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:14:27,243 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:14:27,244 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:14:27,244 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:14:27,246 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (1/1) ... [2024-11-10 15:14:27,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:14:27,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:27,277 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 15:14:27,279 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 15:14:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:14:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:14:27,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:14:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:14:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:14:27,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:14:27,379 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:14:27,381 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:14:27,570 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L21: call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2024-11-10 15:14:27,589 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-10 15:14:27,589 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:14:27,605 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:14:27,605 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:14:27,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:14:27 BoogieIcfgContainer [2024-11-10 15:14:27,606 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:14:27,609 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:14:27,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:14:27,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:14:27,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:14:26" (1/3) ... [2024-11-10 15:14:27,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb6f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:14:27, skipping insertion in model container [2024-11-10 15:14:27,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:14:27" (2/3) ... [2024-11-10 15:14:27,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdb6f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:14:27, skipping insertion in model container [2024-11-10 15:14:27,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:14:27" (3/3) ... [2024-11-10 15:14:27,616 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength.c [2024-11-10 15:14:27,636 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:14:27,636 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-10 15:14:27,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:14:27,696 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;@248683eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:14:27,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 15:14:27,700 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 15:14:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-10 15:14:27,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:27,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:27,707 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 15:14:27,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash 30530691, now seen corresponding path program 1 times [2024-11-10 15:14:27,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:27,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508986986] [2024-11-10 15:14:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:27,992 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 15:14:27,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:27,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508986986] [2024-11-10 15:14:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508986986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:27,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:27,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:14:27,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239369588] [2024-11-10 15:14:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:28,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:14:28,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:14:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:14:28,047 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 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 15:14:28,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:28,162 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2024-11-10 15:14:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:14:28,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 15:14:28,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:28,174 INFO L225 Difference]: With dead ends: 47 [2024-11-10 15:14:28,175 INFO L226 Difference]: Without dead ends: 44 [2024-11-10 15:14:28,177 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 15:14:28,182 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:28,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 66 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-10 15:14:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-11-10 15:14:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 35 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 15:14:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-11-10 15:14:28,213 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 7 [2024-11-10 15:14:28,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:28,214 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-11-10 15:14:28,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 15:14:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-11-10 15:14:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 15:14:28,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:28,215 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:28,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:14:28,215 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:28,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:28,216 INFO L85 PathProgramCache]: Analyzing trace with hash -724811780, now seen corresponding path program 1 times [2024-11-10 15:14:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:28,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467448245] [2024-11-10 15:14:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:28,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:28,284 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 15:14:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467448245] [2024-11-10 15:14:28,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467448245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:28,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:28,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:14:28,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539236827] [2024-11-10 15:14:28,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:28,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:14:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:28,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:14:28,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:14:28,291 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 15:14:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:28,325 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2024-11-10 15:14:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:14:28,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 15:14:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:28,327 INFO L225 Difference]: With dead ends: 34 [2024-11-10 15:14:28,328 INFO L226 Difference]: Without dead ends: 34 [2024-11-10 15:14:28,328 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 15:14:28,330 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:28,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-10 15:14:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-10 15:14:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 33 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 15:14:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-11-10 15:14:28,336 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 9 [2024-11-10 15:14:28,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:28,336 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-11-10 15:14:28,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 15:14:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-11-10 15:14:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 15:14:28,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:28,337 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:28,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:14:28,338 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:28,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:28,339 INFO L85 PathProgramCache]: Analyzing trace with hash -724811779, now seen corresponding path program 1 times [2024-11-10 15:14:28,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:28,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068667674] [2024-11-10 15:14:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:28,477 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 15:14:28,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068667674] [2024-11-10 15:14:28,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068667674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:28,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:28,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:14:28,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927649509] [2024-11-10 15:14:28,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:28,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:14:28,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:14:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:14:28,485 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 15:14:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:28,521 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-10 15:14:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:14:28,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 15:14:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:28,523 INFO L225 Difference]: With dead ends: 38 [2024-11-10 15:14:28,523 INFO L226 Difference]: Without dead ends: 38 [2024-11-10 15:14:28,524 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 15:14:28,525 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:28,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:28,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-10 15:14:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2024-11-10 15:14:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 36 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 15:14:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-10 15:14:28,532 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 9 [2024-11-10 15:14:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:28,533 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-10 15:14:28,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 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 15:14:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-10 15:14:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-10 15:14:28,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:28,534 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:28,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 15:14:28,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:28,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1202329943, now seen corresponding path program 1 times [2024-11-10 15:14:28,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:28,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910568219] [2024-11-10 15:14:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:28,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:28,838 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 15:14:28,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910568219] [2024-11-10 15:14:28,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910568219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502355961] [2024-11-10 15:14:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:28,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:28,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:28,843 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 15:14:28,844 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 15:14:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:28,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-10 15:14:28,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:29,213 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 15:14:29,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:29,443 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 15:14:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502355961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:29,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:29,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 6] total 18 [2024-11-10 15:14:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850537324] [2024-11-10 15:14:29,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:29,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 15:14:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:29,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 15:14:29,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:14:29,451 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 19 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 15:14:29,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:29,810 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-11-10 15:14:29,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 15:14:29,810 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 19 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-10 15:14:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:29,811 INFO L225 Difference]: With dead ends: 66 [2024-11-10 15:14:29,811 INFO L226 Difference]: Without dead ends: 66 [2024-11-10 15:14:29,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2024-11-10 15:14:29,813 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 120 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:29,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 135 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:14:29,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-10 15:14:29,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2024-11-10 15:14:29,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.3125) internal successors, (63), 53 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 15:14:29,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-10 15:14:29,821 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 15 [2024-11-10 15:14:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:29,821 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-10 15:14:29,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 19 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 15:14:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-10 15:14:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-10 15:14:29,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:29,822 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:29,840 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 15:14:30,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:30,024 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:30,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1382477430, now seen corresponding path program 1 times [2024-11-10 15:14:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876168711] [2024-11-10 15:14:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:30,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:30,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:30,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876168711] [2024-11-10 15:14:30,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876168711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:30,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:14:30,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:14:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263841313] [2024-11-10 15:14:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:30,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:14:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:30,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:14:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:14:30,070 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:30,100 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-10 15:14:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:14:30,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-10 15:14:30,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:30,102 INFO L225 Difference]: With dead ends: 53 [2024-11-10 15:14:30,102 INFO L226 Difference]: Without dead ends: 53 [2024-11-10 15:14:30,102 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 15:14:30,103 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:30,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 32 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:30,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-10 15:14:30,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-10 15:14:30,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 52 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 15:14:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2024-11-10 15:14:30,108 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 16 [2024-11-10 15:14:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:30,108 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2024-11-10 15:14:30,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2024-11-10 15:14:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-10 15:14:30,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:30,109 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:30,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 15:14:30,109 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:30,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1382477431, now seen corresponding path program 1 times [2024-11-10 15:14:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:30,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472481457] [2024-11-10 15:14:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:30,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:30,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472481457] [2024-11-10 15:14:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472481457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167275612] [2024-11-10 15:14:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:30,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:30,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:30,256 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 15:14:30,258 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 15:14:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:30,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 15:14:30,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:30,345 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 15:14:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:30,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:30,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167275612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:30,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:30,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-10 15:14:30,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863928448] [2024-11-10 15:14:30,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:30,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:14:30,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:30,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:14:30,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 15:14:30,529 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:30,596 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-11-10 15:14:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 15:14:30,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-10 15:14:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:30,597 INFO L225 Difference]: With dead ends: 68 [2024-11-10 15:14:30,597 INFO L226 Difference]: Without dead ends: 68 [2024-11-10 15:14:30,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 15:14:30,598 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:30,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 32 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:30,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-10 15:14:30,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2024-11-10 15:14:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 65 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-11-10 15:14:30,604 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 16 [2024-11-10 15:14:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:30,605 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-11-10 15:14:30,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-11-10 15:14:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-10 15:14:30,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:30,607 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:30,625 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 15:14:30,807 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,SelfDestructingSolverStorable5 [2024-11-10 15:14:30,808 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:30,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -670539947, now seen corresponding path program 1 times [2024-11-10 15:14:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:30,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160035049] [2024-11-10 15:14:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:30,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160035049] [2024-11-10 15:14:30,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160035049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630345865] [2024-11-10 15:14:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:30,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:30,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:30,933 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 15:14:30,934 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 15:14:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:30,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 15:14:30,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:31,002 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 15:14:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:31,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:31,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630345865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:31,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:31,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-10 15:14:31,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933211031] [2024-11-10 15:14:31,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:31,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:14:31,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:14:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:14:31,262 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 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 15:14:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:31,351 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2024-11-10 15:14:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:14:31,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-10 15:14:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:31,353 INFO L225 Difference]: With dead ends: 94 [2024-11-10 15:14:31,353 INFO L226 Difference]: Without dead ends: 94 [2024-11-10 15:14:31,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:14:31,354 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:31,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 85 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-10 15:14:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2024-11-10 15:14:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 90 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 15:14:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2024-11-10 15:14:31,359 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 22 [2024-11-10 15:14:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:31,360 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2024-11-10 15:14:31,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 9 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 15:14:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2024-11-10 15:14:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 15:14:31,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:31,361 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:31,381 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 15:14:31,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:31,565 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:31,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1256957751, now seen corresponding path program 1 times [2024-11-10 15:14:31,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:31,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226397898] [2024-11-10 15:14:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:31,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:14:31,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:31,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226397898] [2024-11-10 15:14:31,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226397898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:31,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051956162] [2024-11-10 15:14:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:31,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:31,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:31,658 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 15:14:31,660 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 15:14:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:31,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 15:14:31,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:31,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:31,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051956162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:31,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-10 15:14:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925102498] [2024-11-10 15:14:31,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:31,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:14:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:14:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:14:31,850 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:31,961 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-10 15:14:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 15:14:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-10 15:14:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:31,964 INFO L225 Difference]: With dead ends: 86 [2024-11-10 15:14:31,964 INFO L226 Difference]: Without dead ends: 86 [2024-11-10 15:14:31,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-11-10 15:14:31,965 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:31,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 100 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:31,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-10 15:14:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2024-11-10 15:14:31,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 80 states have (on average 1.225) internal successors, (98), 83 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 15:14:31,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2024-11-10 15:14:31,977 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 26 [2024-11-10 15:14:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:31,977 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2024-11-10 15:14:31,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2024-11-10 15:14:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-10 15:14:31,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:31,978 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-10 15:14:31,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 15:14:32,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:32,179 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:32,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:32,180 INFO L85 PathProgramCache]: Analyzing trace with hash -686208125, now seen corresponding path program 1 times [2024-11-10 15:14:32,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:32,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502388550] [2024-11-10 15:14:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:32,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:32,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502388550] [2024-11-10 15:14:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502388550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:32,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202177376] [2024-11-10 15:14:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:32,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:32,342 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 15:14:32,343 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 15:14:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:32,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 15:14:32,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:32,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:32,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202177376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:32,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:32,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 14 [2024-11-10 15:14:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038528498] [2024-11-10 15:14:32,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:32,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 15:14:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 15:14:32,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:14:32,673 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:33,284 INFO L93 Difference]: Finished difference Result 187 states and 226 transitions. [2024-11-10 15:14:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 15:14:33,284 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-10 15:14:33,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:33,285 INFO L225 Difference]: With dead ends: 187 [2024-11-10 15:14:33,285 INFO L226 Difference]: Without dead ends: 187 [2024-11-10 15:14:33,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=215, Invalid=715, Unknown=0, NotChecked=0, Total=930 [2024-11-10 15:14:33,286 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 201 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:33,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 155 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:14:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-10 15:14:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 145. [2024-11-10 15:14:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 141 states have (on average 1.2624113475177305) internal successors, (178), 144 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 15:14:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2024-11-10 15:14:33,293 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 33 [2024-11-10 15:14:33,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:33,294 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2024-11-10 15:14:33,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.142857142857143) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:33,294 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2024-11-10 15:14:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-10 15:14:33,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:33,295 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2024-11-10 15:14:33,311 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 15:14:33,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:33,495 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:33,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:33,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1954970303, now seen corresponding path program 2 times [2024-11-10 15:14:33,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:33,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806033721] [2024-11-10 15:14:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:33,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:33,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806033721] [2024-11-10 15:14:33,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806033721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:33,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770149533] [2024-11-10 15:14:33,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:33,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:33,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:33,615 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 15:14:33,617 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 15:14:33,685 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:14:33,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:33,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 15:14:33,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:33,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:14:33,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770149533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:33,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:33,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-10 15:14:33,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988653319] [2024-11-10 15:14:33,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:33,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 15:14:33,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:33,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 15:14:33,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-10 15:14:33,863 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 15:14:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:34,030 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2024-11-10 15:14:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 15:14:34,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 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 38 [2024-11-10 15:14:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:34,031 INFO L225 Difference]: With dead ends: 136 [2024-11-10 15:14:34,031 INFO L226 Difference]: Without dead ends: 136 [2024-11-10 15:14:34,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-10 15:14:34,032 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:34,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 122 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-10 15:14:34,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2024-11-10 15:14:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 133 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2024-11-10 15:14:34,037 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 38 [2024-11-10 15:14:34,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:34,038 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2024-11-10 15:14:34,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 15:14:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2024-11-10 15:14:34,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-10 15:14:34,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:34,039 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:34,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 15:14:34,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:34,240 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 15:14:34,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1042554031, now seen corresponding path program 1 times [2024-11-10 15:14:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:34,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789570330] [2024-11-10 15:14:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-10 15:14:34,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:34,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789570330] [2024-11-10 15:14:34,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789570330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:34,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250561937] [2024-11-10 15:14:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:34,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:34,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:34,341 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 15:14:34,343 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 15:14:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:34,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 15:14:34,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:14:34,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 15:14:34,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250561937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:34,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:34,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2024-11-10 15:14:34,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802992057] [2024-11-10 15:14:34,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:34,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 15:14:34,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:34,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 15:14:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:14:34,522 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:34,681 INFO L93 Difference]: Finished difference Result 134 states and 149 transitions. [2024-11-10 15:14:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 15:14:34,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-10 15:14:34,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:34,683 INFO L225 Difference]: With dead ends: 134 [2024-11-10 15:14:34,683 INFO L226 Difference]: Without dead ends: 134 [2024-11-10 15:14:34,684 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:14:34,684 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:34,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 84 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-10 15:14:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-10 15:14:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.146153846153846) internal successors, (149), 133 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2024-11-10 15:14:34,690 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 45 [2024-11-10 15:14:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:34,690 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2024-11-10 15:14:34,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2024-11-10 15:14:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-10 15:14:34,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:34,692 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-10 15:14:34,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 15:14:34,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:34,893 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 15:14:34,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:34,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1233564889, now seen corresponding path program 3 times [2024-11-10 15:14:34,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:34,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937779747] [2024-11-10 15:14:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 15:14:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937779747] [2024-11-10 15:14:35,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937779747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:35,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97101193] [2024-11-10 15:14:35,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:14:35,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:35,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:35,154 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 15:14:35,155 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 15:14:35,243 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 15:14:35,244 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:35,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-10 15:14:35,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 1 proven. 64 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-10 15:14:35,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-10 15:14:36,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97101193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:36,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:36,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-10 15:14:36,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178620185] [2024-11-10 15:14:36,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:36,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 15:14:36,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 15:14:36,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:14:36,426 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 21 states, 20 states have (on average 4.95) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:14:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:37,275 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2024-11-10 15:14:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 15:14:37,275 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.95) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-10 15:14:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:37,276 INFO L225 Difference]: With dead ends: 144 [2024-11-10 15:14:37,276 INFO L226 Difference]: Without dead ends: 144 [2024-11-10 15:14:37,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=349, Invalid=1291, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 15:14:37,278 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:37,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 211 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:14:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-10 15:14:37,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 89. [2024-11-10 15:14:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 86 states have (on average 1.127906976744186) internal successors, (97), 88 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 15:14:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2024-11-10 15:14:37,281 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 56 [2024-11-10 15:14:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:37,281 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2024-11-10 15:14:37,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.95) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 15:14:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2024-11-10 15:14:37,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-10 15:14:37,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:37,283 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1] [2024-11-10 15:14:37,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 15:14:37,487 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,SelfDestructingSolverStorable11 [2024-11-10 15:14:37,488 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:37,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash 414194105, now seen corresponding path program 2 times [2024-11-10 15:14:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:37,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216130362] [2024-11-10 15:14:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:37,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-10 15:14:37,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:37,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216130362] [2024-11-10 15:14:37,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216130362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:37,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651789872] [2024-11-10 15:14:37,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:37,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:37,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:37,696 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 15:14:37,697 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 15:14:37,780 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:14:37,781 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:37,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 15:14:37,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:37,791 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 15:14:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 9 proven. 64 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-10 15:14:38,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 5 proven. 68 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-10 15:14:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651789872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:38,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:38,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-10 15:14:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441698663] [2024-11-10 15:14:38,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:38,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 15:14:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 15:14:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-10 15:14:38,458 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:38,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:38,704 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2024-11-10 15:14:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:14:38,705 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-10 15:14:38,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:38,705 INFO L225 Difference]: With dead ends: 98 [2024-11-10 15:14:38,705 INFO L226 Difference]: Without dead ends: 98 [2024-11-10 15:14:38,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2024-11-10 15:14:38,706 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:38,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 126 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:14:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-10 15:14:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2024-11-10 15:14:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 84 states have (on average 1.119047619047619) internal successors, (94), 85 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2024-11-10 15:14:38,709 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 57 [2024-11-10 15:14:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:38,709 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2024-11-10 15:14:38,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.666666666666667) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2024-11-10 15:14:38,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-10 15:14:38,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:38,711 INFO L215 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:38,728 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 15:14:38,911 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,SelfDestructingSolverStorable12 [2024-11-10 15:14:38,912 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:38,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:38,912 INFO L85 PathProgramCache]: Analyzing trace with hash -590999285, now seen corresponding path program 1 times [2024-11-10 15:14:38,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:38,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004756873] [2024-11-10 15:14:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:38,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 15:14:39,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:39,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004756873] [2024-11-10 15:14:39,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004756873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:39,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321340201] [2024-11-10 15:14:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:39,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:39,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:39,038 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 15:14:39,040 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 15:14:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:39,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 15:14:39,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 72 proven. 63 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 15:14:39,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 72 proven. 63 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 15:14:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321340201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:39,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:39,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 17 [2024-11-10 15:14:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074785177] [2024-11-10 15:14:39,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:39,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 15:14:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:39,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 15:14:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-10 15:14:39,365 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 15:14:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:39,755 INFO L93 Difference]: Finished difference Result 150 states and 164 transitions. [2024-11-10 15:14:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 15:14:39,756 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 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 69 [2024-11-10 15:14:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:39,757 INFO L225 Difference]: With dead ends: 150 [2024-11-10 15:14:39,757 INFO L226 Difference]: Without dead ends: 150 [2024-11-10 15:14:39,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 15:14:39,759 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:39,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 200 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:14:39,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-10 15:14:39,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 118. [2024-11-10 15:14:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 1.1120689655172413) internal successors, (129), 117 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 15:14:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2024-11-10 15:14:39,762 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 69 [2024-11-10 15:14:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:39,762 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2024-11-10 15:14:39,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 15:14:39,763 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2024-11-10 15:14:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 15:14:39,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:39,765 INFO L215 NwaCegarLoop]: trace histogram [14, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:39,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 15:14:39,966 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,SelfDestructingSolverStorable13 [2024-11-10 15:14:39,966 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:39,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:39,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2053134513, now seen corresponding path program 2 times [2024-11-10 15:14:39,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:39,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911715257] [2024-11-10 15:14:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:39,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-10 15:14:40,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:40,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911715257] [2024-11-10 15:14:40,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911715257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:40,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151516135] [2024-11-10 15:14:40,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:40,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:40,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:40,102 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 15:14:40,103 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 15:14:40,180 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 15:14:40,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:40,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:14:40,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:40,483 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_27| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_27|) 0) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_27| 0)))) is different from true [2024-11-10 15:14:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-11-10 15:14:40,493 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:14:40,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151516135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:40,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:14:40,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2024-11-10 15:14:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549432708] [2024-11-10 15:14:40,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:40,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:14:40,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:40,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:14:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=43, Unknown=1, NotChecked=14, Total=90 [2024-11-10 15:14:40,494 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:40,510 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2024-11-10 15:14:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:14:40,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-10 15:14:40,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:40,511 INFO L225 Difference]: With dead ends: 120 [2024-11-10 15:14:40,511 INFO L226 Difference]: Without dead ends: 117 [2024-11-10 15:14:40,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=43, Unknown=1, NotChecked=14, Total=90 [2024-11-10 15:14:40,512 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:40,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2024-11-10 15:14:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-10 15:14:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-10 15:14:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.0695652173913044) internal successors, (123), 116 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 15:14:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2024-11-10 15:14:40,518 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 97 [2024-11-10 15:14:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:40,518 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2024-11-10 15:14:40,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2024-11-10 15:14:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-10 15:14:40,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:40,519 INFO L215 NwaCegarLoop]: trace histogram [14, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:40,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 15:14:40,719 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,SelfDestructingSolverStorable14 [2024-11-10 15:14:40,719 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:40,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2053203191, now seen corresponding path program 1 times [2024-11-10 15:14:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:40,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190275948] [2024-11-10 15:14:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:40,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-10 15:14:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190275948] [2024-11-10 15:14:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190275948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434905660] [2024-11-10 15:14:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:40,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:40,864 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 15:14:40,866 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 15:14:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:40,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 15:14:40,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 173 proven. 155 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-10 15:14:41,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 173 proven. 155 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-10 15:14:41,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434905660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:41,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:41,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 21 [2024-11-10 15:14:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214481021] [2024-11-10 15:14:41,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:41,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 15:14:41,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:41,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 15:14:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-10 15:14:41,361 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 21 states, 21 states have (on average 7.333333333333333) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:41,909 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2024-11-10 15:14:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 15:14:41,910 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.333333333333333) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-10 15:14:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:41,911 INFO L225 Difference]: With dead ends: 191 [2024-11-10 15:14:41,911 INFO L226 Difference]: Without dead ends: 191 [2024-11-10 15:14:41,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 176 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=479, Invalid=1683, Unknown=0, NotChecked=0, Total=2162 [2024-11-10 15:14:41,912 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 240 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:41,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 197 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:14:41,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-11-10 15:14:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2024-11-10 15:14:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 152 states have (on average 1.0657894736842106) internal successors, (162), 153 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 15:14:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2024-11-10 15:14:41,916 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 97 [2024-11-10 15:14:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:41,916 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2024-11-10 15:14:41,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.333333333333333) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2024-11-10 15:14:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-10 15:14:41,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:41,920 INFO L215 NwaCegarLoop]: trace histogram [20, 14, 14, 14, 14, 7, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:41,938 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 15:14:42,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-10 15:14:42,121 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:42,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1144860337, now seen corresponding path program 2 times [2024-11-10 15:14:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:42,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298330803] [2024-11-10 15:14:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:42,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 647 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-10 15:14:42,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298330803] [2024-11-10 15:14:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298330803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:42,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428675018] [2024-11-10 15:14:42,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:42,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:42,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:42,351 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 15:14:42,352 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 15:14:42,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:14:42,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:42,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 15:14:42,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 377 proven. 308 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-10 15:14:42,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 377 proven. 308 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-10 15:14:42,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428675018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:42,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:42,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 25 [2024-11-10 15:14:42,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129642411] [2024-11-10 15:14:42,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:42,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 15:14:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:42,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 15:14:42,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-10 15:14:42,974 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 25 states, 25 states have (on average 7.52) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 15:14:43,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:43,664 INFO L93 Difference]: Finished difference Result 238 states and 250 transitions. [2024-11-10 15:14:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-10 15:14:43,664 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.52) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 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 130 [2024-11-10 15:14:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:43,665 INFO L225 Difference]: With dead ends: 238 [2024-11-10 15:14:43,665 INFO L226 Difference]: Without dead ends: 238 [2024-11-10 15:14:43,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 238 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=700, Invalid=2722, Unknown=0, NotChecked=0, Total=3422 [2024-11-10 15:14:43,667 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 245 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:43,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 311 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:14:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-10 15:14:43,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 196. [2024-11-10 15:14:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 194 states have (on average 1.0618556701030928) internal successors, (206), 195 states have internal predecessors, (206), 0 states have call successors, (0), 0 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 15:14:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 206 transitions. [2024-11-10 15:14:43,671 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 206 transitions. Word has length 130 [2024-11-10 15:14:43,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:43,671 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 206 transitions. [2024-11-10 15:14:43,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.52) internal successors, (188), 25 states have internal predecessors, (188), 0 states have call successors, (0), 0 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 15:14:43,672 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 206 transitions. [2024-11-10 15:14:43,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-10 15:14:43,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:43,673 INFO L215 NwaCegarLoop]: trace histogram [27, 20, 20, 20, 20, 8, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:43,690 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 15:14:43,873 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,SelfDestructingSolverStorable16 [2024-11-10 15:14:43,874 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:43,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1378943285, now seen corresponding path program 3 times [2024-11-10 15:14:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863310900] [2024-11-10 15:14:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:43,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2024-11-10 15:14:44,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863310900] [2024-11-10 15:14:44,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863310900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:44,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495873030] [2024-11-10 15:14:44,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:14:44,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:44,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:44,201 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 15:14:44,204 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 15:14:44,321 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 15:14:44,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:44,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:14:44,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:44,335 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 15:14:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2024-11-10 15:14:44,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:14:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495873030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:44,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:14:44,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-10 15:14:44,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976898894] [2024-11-10 15:14:44,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:44,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 15:14:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 15:14:44,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:14:44,805 INFO L87 Difference]: Start difference. First operand 196 states and 206 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:44,830 INFO L93 Difference]: Finished difference Result 195 states and 200 transitions. [2024-11-10 15:14:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:14:44,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2024-11-10 15:14:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:44,831 INFO L225 Difference]: With dead ends: 195 [2024-11-10 15:14:44,831 INFO L226 Difference]: Without dead ends: 195 [2024-11-10 15:14:44,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:14:44,832 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:44,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 40 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:14:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-10 15:14:44,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-10 15:14:44,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0309278350515463) internal successors, (200), 194 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 15:14:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 200 transitions. [2024-11-10 15:14:44,836 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 200 transitions. Word has length 168 [2024-11-10 15:14:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:44,837 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 200 transitions. [2024-11-10 15:14:44,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 200 transitions. [2024-11-10 15:14:44,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-10 15:14:44,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:44,842 INFO L215 NwaCegarLoop]: trace histogram [27, 20, 20, 20, 20, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:44,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 15:14:45,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:45,043 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2024-11-10 15:14:45,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash 282031096, now seen corresponding path program 1 times [2024-11-10 15:14:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396814132] [2024-11-10 15:14:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:45,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2024-11-10 15:14:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:45,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396814132] [2024-11-10 15:14:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396814132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100184868] [2024-11-10 15:14:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:45,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:45,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:45,293 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 15:14:45,294 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 15:14:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:45,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 15:14:45,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 745 proven. 537 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-10 15:14:45,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:14:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 745 proven. 537 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-10 15:14:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100184868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:14:46,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:14:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 15] total 29 [2024-11-10 15:14:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915689915] [2024-11-10 15:14:46,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:14:46,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-10 15:14:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:46,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-10 15:14:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2024-11-10 15:14:46,113 INFO L87 Difference]: Start difference. First operand 195 states and 200 transitions. Second operand has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 29 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:46,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:46,862 INFO L93 Difference]: Finished difference Result 289 states and 296 transitions. [2024-11-10 15:14:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-10 15:14:46,862 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 29 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2024-11-10 15:14:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:46,864 INFO L225 Difference]: With dead ends: 289 [2024-11-10 15:14:46,864 INFO L226 Difference]: Without dead ends: 289 [2024-11-10 15:14:46,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 369 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=975, Invalid=4137, Unknown=0, NotChecked=0, Total=5112 [2024-11-10 15:14:46,866 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 559 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:46,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 290 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:14:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-10 15:14:46,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 242. [2024-11-10 15:14:46,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.0290456431535269) internal successors, (248), 241 states have internal predecessors, (248), 0 states have call successors, (0), 0 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 15:14:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 248 transitions. [2024-11-10 15:14:46,876 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 248 transitions. Word has length 194 [2024-11-10 15:14:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:46,876 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 248 transitions. [2024-11-10 15:14:46,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.448275862068965) internal successors, (187), 29 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 248 transitions. [2024-11-10 15:14:46,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-10 15:14:46,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:14:46,879 INFO L215 NwaCegarLoop]: trace histogram [35, 27, 27, 27, 27, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:46,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 15:14:47,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:47,080 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 15:14:47,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:14:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2079863050, now seen corresponding path program 2 times [2024-11-10 15:14:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:14:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090833557] [2024-11-10 15:14:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:14:47,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:14:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:14:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2555 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 2427 trivial. 0 not checked. [2024-11-10 15:14:47,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:14:47,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090833557] [2024-11-10 15:14:47,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090833557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:14:47,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332425092] [2024-11-10 15:14:47,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:14:47,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:47,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:14:47,426 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 15:14:47,427 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 15:14:47,549 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 15:14:47,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:14:47,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:14:47,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:14:48,257 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_31| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_31|) 0) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_31| 0)))) is different from true [2024-11-10 15:14:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2555 trivial. 0 not checked. [2024-11-10 15:14:48,264 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:14:48,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332425092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:14:48,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:14:48,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 13 [2024-11-10 15:14:48,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347048575] [2024-11-10 15:14:48,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:14:48,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:14:48,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:14:48,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:14:48,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=76, Unknown=1, NotChecked=20, Total=156 [2024-11-10 15:14:48,266 INFO L87 Difference]: Start difference. First operand 242 states and 248 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:14:48,272 INFO L93 Difference]: Finished difference Result 241 states and 247 transitions. [2024-11-10 15:14:48,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:14:48,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2024-11-10 15:14:48,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:14:48,273 INFO L225 Difference]: With dead ends: 241 [2024-11-10 15:14:48,273 INFO L226 Difference]: Without dead ends: 0 [2024-11-10 15:14:48,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=76, Unknown=1, NotChecked=20, Total=156 [2024-11-10 15:14:48,273 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:14:48,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2024-11-10 15:14:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-10 15:14:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-10 15:14:48,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-10 15:14:48,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2024-11-10 15:14:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:14:48,275 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 15:14:48,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:14:48,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-10 15:14:48,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-10 15:14:48,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2024-11-10 15:14:48,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-10 15:14:48,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2024-11-10 15:14:48,277 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2024-11-10 15:14:48,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-10 15:14:48,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-10 15:14:48,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-10 15:14:48,278 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX (0 of 8 remaining) [2024-11-10 15:14:48,295 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 15:14:48,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:14:48,482 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:14:48,484 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 15:14:48,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:14:48 BoogieIcfgContainer [2024-11-10 15:14:48,487 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 15:14:48,487 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 15:14:48,487 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 15:14:48,488 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 15:14:48,488 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:14:27" (3/4) ... [2024-11-10 15:14:48,490 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 15:14:48,498 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-10 15:14:48,498 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-10 15:14:48,499 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 15:14:48,499 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-10 15:14:48,585 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 15:14:48,586 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 15:14:48,586 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 15:14:48,586 INFO L158 Benchmark]: Toolchain (without parser) took 21692.92ms. Allocated memory was 169.9MB in the beginning and 268.4MB in the end (delta: 98.6MB). Free memory was 120.0MB in the beginning and 121.8MB in the end (delta: -1.8MB). Peak memory consumption was 99.3MB. Max. memory is 16.1GB. [2024-11-10 15:14:48,587 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 135.2MB in the end (delta: 293.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 15:14:48,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.03ms. Allocated memory is still 169.9MB. Free memory was 119.7MB in the beginning and 107.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 15:14:48,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.73ms. Allocated memory is still 169.9MB. Free memory was 107.8MB in the beginning and 106.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 15:14:48,588 INFO L158 Benchmark]: Boogie Preprocessor took 36.58ms. Allocated memory is still 169.9MB. Free memory was 106.3MB in the beginning and 104.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 15:14:48,588 INFO L158 Benchmark]: IcfgBuilder took 362.85ms. Allocated memory is still 169.9MB. Free memory was 104.5MB in the beginning and 90.7MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 15:14:48,588 INFO L158 Benchmark]: TraceAbstraction took 20877.68ms. Allocated memory was 169.9MB in the beginning and 268.4MB in the end (delta: 98.6MB). Free memory was 90.1MB in the beginning and 125.7MB in the end (delta: -35.6MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2024-11-10 15:14:48,588 INFO L158 Benchmark]: Witness Printer took 98.50ms. Allocated memory is still 268.4MB. Free memory was 125.7MB in the beginning and 121.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 15:14:48,590 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 169.9MB. Free memory was 135.5MB in the beginning and 135.2MB in the end (delta: 293.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.03ms. Allocated memory is still 169.9MB. Free memory was 119.7MB in the beginning and 107.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.73ms. Allocated memory is still 169.9MB. Free memory was 107.8MB in the beginning and 106.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.58ms. Allocated memory is still 169.9MB. Free memory was 106.3MB in the beginning and 104.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 362.85ms. Allocated memory is still 169.9MB. Free memory was 104.5MB in the beginning and 90.7MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 20877.68ms. Allocated memory was 169.9MB in the beginning and 268.4MB in the end (delta: 98.6MB). Free memory was 90.1MB in the beginning and 125.7MB in the end (delta: -35.6MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. * Witness Printer took 98.50ms. Allocated memory is still 268.4MB. Free memory was 125.7MB in the beginning and 121.8MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 20.8s, OverallIterations: 20, TraceHistogramMax: 35, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1982 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1982 mSDsluCounter, 2290 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 49 IncrementalHoareTripleChecker+Unchecked, 1792 mSDsCounter, 278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4178 IncrementalHoareTripleChecker+Invalid, 4505 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 278 mSolverCounterUnsat, 498 mSDtfsCounter, 4178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2399 GetRequests, 1952 SyntacticMatches, 31 SemanticMatches, 416 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3853 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=19, InterpolantAutomatonStates: 280, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 297 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 2649 NumberOfCodeBlocks, 2149 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 3398 ConstructedInterpolants, 4 QuantifiedInterpolants, 19125 SizeOfPredicates, 37 NumberOfNonLiveVariables, 3091 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 49 InterpolantComputations, 7 PerfectInterpolantSequences, 13841/18369 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 15:14:48,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE