./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '2b1ee78e0ef345a64f8c7caca77413516ce68186d78e333a5564d6417b0fa920'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 2b1ee78e0ef345a64f8c7caca77413516ce68186d78e333a5564d6417b0fa920 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 16:15:34,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 16:15:34,825 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 16:15:34,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 16:15:34,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 16:15:34,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 16:15:34,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 16:15:34,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 16:15:34,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 16:15:34,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 16:15:34,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 16:15:34,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 16:15:34,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 16:15:34,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 16:15:34,858 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 16:15:34,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 16:15:34,859 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 16:15:34,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 16:15:34,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 16:15:34,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 16:15:34,859 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 16:15:34,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 16:15:34,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:15:34,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 16:15:34,861 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 2b1ee78e0ef345a64f8c7caca77413516ce68186d78e333a5564d6417b0fa920 [2024-11-07 16:15:35,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 16:15:35,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 16:15:35,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 16:15:35,117 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 16:15:35,117 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 16:15:35,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i [2024-11-07 16:15:36,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 16:15:36,631 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 16:15:36,636 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-memsafety/cstrlen-alloca-2.i [2024-11-07 16:15:36,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca665ddd5/5eb42eb62cf048a8abb65f22ebdc5691/FLAG2f4d78734 [2024-11-07 16:15:36,916 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca665ddd5/5eb42eb62cf048a8abb65f22ebdc5691 [2024-11-07 16:15:36,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 16:15:36,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 16:15:36,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 16:15:36,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 16:15:36,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 16:15:36,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:15:36" (1/1) ... [2024-11-07 16:15:36,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767ccbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:36, skipping insertion in model container [2024-11-07 16:15:36,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:15:36" (1/1) ... [2024-11-07 16:15:36,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 16:15:37,130 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 16:15:37,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:15:37,141 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 16:15:37,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 16:15:37,204 INFO L204 MainTranslator]: Completed translation [2024-11-07 16:15:37,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37 WrapperNode [2024-11-07 16:15:37,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 16:15:37,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 16:15:37,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 16:15:37,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 16:15:37,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,236 INFO L138 Inliner]: procedures = 117, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-11-07 16:15:37,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 16:15:37,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 16:15:37,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 16:15:37,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 16:15:37,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,260 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 2 writes are split as follows [2]. [2024-11-07 16:15:37,261 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,267 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,273 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 16:15:37,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 16:15:37,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 16:15:37,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 16:15:37,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (1/1) ... [2024-11-07 16:15:37,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 16:15:37,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:37,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 16:15:37,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 16:15:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 16:15:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 16:15:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 16:15:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 16:15:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 16:15:37,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 16:15:37,410 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 16:15:37,411 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 16:15:37,513 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-07 16:15:37,513 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 16:15:37,519 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 16:15:37,519 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 16:15:37,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:15:37 BoogieIcfgContainer [2024-11-07 16:15:37,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 16:15:37,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 16:15:37,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 16:15:37,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 16:15:37,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:15:36" (1/3) ... [2024-11-07 16:15:37,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcc4735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:15:37, skipping insertion in model container [2024-11-07 16:15:37,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:15:37" (2/3) ... [2024-11-07 16:15:37,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcc4735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:15:37, skipping insertion in model container [2024-11-07 16:15:37,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:15:37" (3/3) ... [2024-11-07 16:15:37,526 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrlen-alloca-2.i [2024-11-07 16:15:37,536 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 16:15:37,536 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-07 16:15:37,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 16:15:37,596 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;@622499a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 16:15:37,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-07 16:15:37,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-07 16:15:37,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:37,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 16:15:37,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:37,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:37,606 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2024-11-07 16:15:37,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:37,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132788380] [2024-11-07 16:15:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:37,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:37,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132788380] [2024-11-07 16:15:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132788380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:37,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253037157] [2024-11-07 16:15:37,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:37,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:37,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:37,779 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:37,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:37,803 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-11-07 16:15:37,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-07 16:15:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:37,808 INFO L225 Difference]: With dead ends: 30 [2024-11-07 16:15:37,808 INFO L226 Difference]: Without dead ends: 28 [2024-11-07 16:15:37,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:37,811 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:37,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-07 16:15:37,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2024-11-07 16:15:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-07 16:15:37,829 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 6 [2024-11-07 16:15:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:37,829 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-07 16:15:37,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-07 16:15:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-07 16:15:37,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:37,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 16:15:37,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 16:15:37,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:37,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2024-11-07 16:15:37,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:37,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564180615] [2024-11-07 16:15:37,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:37,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564180615] [2024-11-07 16:15:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564180615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 16:15:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444388272] [2024-11-07 16:15:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:37,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 16:15:37,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 16:15:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 16:15:37,881 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:37,898 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-07 16:15:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 16:15:37,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-07 16:15:37,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:37,899 INFO L225 Difference]: With dead ends: 23 [2024-11-07 16:15:37,899 INFO L226 Difference]: Without dead ends: 23 [2024-11-07 16:15:37,899 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 [2024-11-07 16:15:37,900 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:37,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:37,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-07 16:15:37,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-07 16:15:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-07 16:15:37,902 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2024-11-07 16:15:37,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:37,902 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-07 16:15:37,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:37,903 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-07 16:15:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-07 16:15:37,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:37,903 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 16:15:37,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 16:15:37,903 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:37,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2024-11-07 16:15:37,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:37,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017924568] [2024-11-07 16:15:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017924568] [2024-11-07 16:15:38,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017924568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:38,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:38,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:38,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541788504] [2024-11-07 16:15:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:38,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:15:38,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:38,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:15:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:38,078 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:38,166 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-07 16:15:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:15:38,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-07 16:15:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:38,167 INFO L225 Difference]: With dead ends: 27 [2024-11-07 16:15:38,167 INFO L226 Difference]: Without dead ends: 27 [2024-11-07 16:15:38,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:15:38,168 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:38,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 40 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-07 16:15:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2024-11-07 16:15:38,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-07 16:15:38,173 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 6 [2024-11-07 16:15:38,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:38,173 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-07 16:15:38,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-07 16:15:38,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-07 16:15:38,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:38,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:38,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 16:15:38,174 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:38,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1804969643, now seen corresponding path program 1 times [2024-11-07 16:15:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090789943] [2024-11-07 16:15:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090789943] [2024-11-07 16:15:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090789943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:15:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883748988] [2024-11-07 16:15:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:38,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:38,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:38,318 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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) [2024-11-07 16:15:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:38,350 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-07 16:15:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:38,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 [2024-11-07 16:15:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:38,351 INFO L225 Difference]: With dead ends: 27 [2024-11-07 16:15:38,351 INFO L226 Difference]: Without dead ends: 27 [2024-11-07 16:15:38,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:38,352 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:38,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-07 16:15:38,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-07 16:15:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-07 16:15:38,358 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 7 [2024-11-07 16:15:38,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:38,358 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-07 16:15:38,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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) [2024-11-07 16:15:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-07 16:15:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-07 16:15:38,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:38,358 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:38,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 16:15:38,359 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:38,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1806816685, now seen corresponding path program 1 times [2024-11-07 16:15:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:38,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406681198] [2024-11-07 16:15:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406681198] [2024-11-07 16:15:38,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406681198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:38,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:38,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 16:15:38,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139068431] [2024-11-07 16:15:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:38,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 16:15:38,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:38,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 16:15:38,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:38,514 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:38,532 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-07 16:15:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 16:15:38,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-07 16:15:38,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:38,534 INFO L225 Difference]: With dead ends: 26 [2024-11-07 16:15:38,534 INFO L226 Difference]: Without dead ends: 26 [2024-11-07 16:15:38,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 16:15:38,535 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:38,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 24 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:38,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-07 16:15:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-07 16:15:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-07 16:15:38,537 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2024-11-07 16:15:38,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:38,537 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-07 16:15:38,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,537 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-07 16:15:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-07 16:15:38,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:38,538 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:38,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 16:15:38,538 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:38,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:38,538 INFO L85 PathProgramCache]: Analyzing trace with hash -590961585, now seen corresponding path program 1 times [2024-11-07 16:15:38,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:38,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326020933] [2024-11-07 16:15:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326020933] [2024-11-07 16:15:38,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326020933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:38,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:38,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:15:38,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135532295] [2024-11-07 16:15:38,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:38,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:38,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:38,593 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:38,617 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2024-11-07 16:15:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:38,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-07 16:15:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:38,620 INFO L225 Difference]: With dead ends: 23 [2024-11-07 16:15:38,620 INFO L226 Difference]: Without dead ends: 23 [2024-11-07 16:15:38,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:38,620 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:38,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-07 16:15:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-07 16:15:38,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-07 16:15:38,622 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2024-11-07 16:15:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:38,622 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-07 16:15:38,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,622 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-07 16:15:38,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-07 16:15:38,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:38,623 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:38,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 16:15:38,623 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:38,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:38,626 INFO L85 PathProgramCache]: Analyzing trace with hash -590961584, now seen corresponding path program 1 times [2024-11-07 16:15:38,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:38,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571592541] [2024-11-07 16:15:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571592541] [2024-11-07 16:15:38,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571592541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:38,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 16:15:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287390217] [2024-11-07 16:15:38,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:38,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 16:15:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 16:15:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 16:15:38,701 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2024-11-07 16:15:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:38,745 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-07 16:15:38,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:15:38,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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 [2024-11-07 16:15:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:38,746 INFO L225 Difference]: With dead ends: 28 [2024-11-07 16:15:38,746 INFO L226 Difference]: Without dead ends: 28 [2024-11-07 16:15:38,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:15:38,747 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:38,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 39 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-07 16:15:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2024-11-07 16:15:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-07 16:15:38,749 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 9 [2024-11-07 16:15:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:38,749 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-07 16:15:38,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2024-11-07 16:15:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-07 16:15:38,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-07 16:15:38,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:38,749 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:38,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 16:15:38,750 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:38,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2024-11-07 16:15:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:38,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106947377] [2024-11-07 16:15:38,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:38,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106947377] [2024-11-07 16:15:38,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106947377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:38,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770548339] [2024-11-07 16:15:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:38,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:38,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:38,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:38,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 16:15:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:39,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-07 16:15:39,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:39,053 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 7 [2024-11-07 16:15:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:39,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:39,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770548339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:39,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:39,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-07 16:15:39,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597677910] [2024-11-07 16:15:39,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:39,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 16:15:39,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:39,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 16:15:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-07 16:15:39,471 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:39,615 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2024-11-07 16:15:39,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:15:39,616 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-07 16:15:39,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:39,617 INFO L225 Difference]: With dead ends: 26 [2024-11-07 16:15:39,617 INFO L226 Difference]: Without dead ends: 26 [2024-11-07 16:15:39,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:15:39,618 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:39,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 51 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-07 16:15:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2024-11-07 16:15:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 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) [2024-11-07 16:15:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-07 16:15:39,620 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 10 [2024-11-07 16:15:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:39,620 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-07 16:15:39,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-07 16:15:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-07 16:15:39,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:39,620 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:39,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 16:15:39,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:39,825 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:39,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:39,825 INFO L85 PathProgramCache]: Analyzing trace with hash -978399703, now seen corresponding path program 1 times [2024-11-07 16:15:39,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:39,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042030649] [2024-11-07 16:15:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:39,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:39,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042030649] [2024-11-07 16:15:39,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042030649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:39,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:39,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 16:15:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352419332] [2024-11-07 16:15:39,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:39,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 16:15:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 16:15:39,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 16:15:39,969 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:40,039 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2024-11-07 16:15:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 16:15:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-07 16:15:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:40,039 INFO L225 Difference]: With dead ends: 27 [2024-11-07 16:15:40,039 INFO L226 Difference]: Without dead ends: 27 [2024-11-07 16:15:40,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:15:40,040 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:40,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:40,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-07 16:15:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-07 16:15:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-07 16:15:40,041 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2024-11-07 16:15:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:40,041 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-07 16:15:40,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-07 16:15:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-07 16:15:40,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:40,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:40,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 16:15:40,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:40,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash -298341333, now seen corresponding path program 1 times [2024-11-07 16:15:40,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:40,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054170281] [2024-11-07 16:15:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:40,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:40,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054170281] [2024-11-07 16:15:40,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054170281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:40,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:40,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 16:15:40,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871692794] [2024-11-07 16:15:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:40,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 16:15:40,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:40,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 16:15:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-07 16:15:40,239 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:40,318 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-11-07 16:15:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 16:15:40,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-07 16:15:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:40,322 INFO L225 Difference]: With dead ends: 36 [2024-11-07 16:15:40,322 INFO L226 Difference]: Without dead ends: 36 [2024-11-07 16:15:40,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-07 16:15:40,323 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:40,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 53 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-07 16:15:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2024-11-07 16:15:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2024-11-07 16:15:40,324 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2024-11-07 16:15:40,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:40,325 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2024-11-07 16:15:40,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,325 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2024-11-07 16:15:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 16:15:40,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:40,325 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:40,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 16:15:40,325 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:40,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash 355673878, now seen corresponding path program 1 times [2024-11-07 16:15:40,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:40,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256251033] [2024-11-07 16:15:40,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:40,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:40,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256251033] [2024-11-07 16:15:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256251033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 16:15:40,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 16:15:40,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 16:15:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522296245] [2024-11-07 16:15:40,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 16:15:40,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 16:15:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 16:15:40,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:40,409 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:40,426 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2024-11-07 16:15:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 16:15:40,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-07 16:15:40,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:40,427 INFO L225 Difference]: With dead ends: 26 [2024-11-07 16:15:40,427 INFO L226 Difference]: Without dead ends: 16 [2024-11-07 16:15:40,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 16:15:40,428 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:40,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 16:15:40,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-07 16:15:40,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-07 16:15:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-07 16:15:40,429 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2024-11-07 16:15:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:40,429 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-07 16:15:40,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-07 16:15:40,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-07 16:15:40,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:40,429 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:40,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 16:15:40,429 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:40,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:40,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1216146632, now seen corresponding path program 1 times [2024-11-07 16:15:40,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:40,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597540053] [2024-11-07 16:15:40,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:40,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:40,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597540053] [2024-11-07 16:15:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597540053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:40,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203296871] [2024-11-07 16:15:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:40,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:40,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:40,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:40,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 16:15:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:40,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 16:15:40,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:40,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-07 16:15:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:40,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203296871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:40,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:40,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-07 16:15:40,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970506617] [2024-11-07 16:15:40,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:40,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 16:15:40,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:40,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 16:15:40,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-07 16:15:40,944 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:41,024 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-07 16:15:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 16:15:41,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-07 16:15:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:41,025 INFO L225 Difference]: With dead ends: 22 [2024-11-07 16:15:41,025 INFO L226 Difference]: Without dead ends: 22 [2024-11-07 16:15:41,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-07 16:15:41,026 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:41,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 46 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-07 16:15:41,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2024-11-07 16:15:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-07 16:15:41,027 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2024-11-07 16:15:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:41,028 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-07 16:15:41,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-07 16:15:41,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-07 16:15:41,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:41,028 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:41,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 16:15:41,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:41,233 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:41,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash 485808289, now seen corresponding path program 2 times [2024-11-07 16:15:41,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:41,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290230027] [2024-11-07 16:15:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:41,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:41,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290230027] [2024-11-07 16:15:41,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290230027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:41,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276817066] [2024-11-07 16:15:41,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 16:15:41,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:41,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:41,464 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:41,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 16:15:41,520 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 16:15:41,520 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:41,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-07 16:15:41,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:41,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-07 16:15:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:41,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:41,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-07 16:15:41,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-07 16:15:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:41,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276817066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:41,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-07 16:15:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932447064] [2024-11-07 16:15:41,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:41,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 16:15:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 16:15:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-07 16:15:41,721 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:41,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:41,848 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2024-11-07 16:15:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:15:41,848 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-07 16:15:41,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:41,848 INFO L225 Difference]: With dead ends: 32 [2024-11-07 16:15:41,848 INFO L226 Difference]: Without dead ends: 25 [2024-11-07 16:15:41,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2024-11-07 16:15:41,850 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:41,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 47 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-07 16:15:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2024-11-07 16:15:41,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 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) [2024-11-07 16:15:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-11-07 16:15:41,852 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2024-11-07 16:15:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:41,852 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-11-07 16:15:41,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2024-11-07 16:15:41,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-07 16:15:41,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:41,852 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:41,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 16:15:42,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:42,055 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:42,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -277057666, now seen corresponding path program 3 times [2024-11-07 16:15:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144821338] [2024-11-07 16:15:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:42,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:42,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:42,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144821338] [2024-11-07 16:15:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144821338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659542561] [2024-11-07 16:15:42,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 16:15:42,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:42,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:42,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:42,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 16:15:42,336 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 16:15:42,336 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:42,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-07 16:15:42,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:42,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:42,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-07 16:15:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659542561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:42,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:42,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-07 16:15:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605410037] [2024-11-07 16:15:42,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:42,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 16:15:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 16:15:42,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-07 16:15:42,635 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 21 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) [2024-11-07 16:15:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:42,713 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-07 16:15:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 16:15:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 21 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 21 [2024-11-07 16:15:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:42,714 INFO L225 Difference]: With dead ends: 25 [2024-11-07 16:15:42,714 INFO L226 Difference]: Without dead ends: 25 [2024-11-07 16:15:42,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-07 16:15:42,715 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:42,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 16:15:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-07 16:15:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-07 16:15:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-07 16:15:42,717 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 21 [2024-11-07 16:15:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:42,717 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-07 16:15:42,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 21 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) [2024-11-07 16:15:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-07 16:15:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-07 16:15:42,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 16:15:42,718 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:42,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 16:15:42,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-07 16:15:42,921 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-07 16:15:42,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 16:15:42,922 INFO L85 PathProgramCache]: Analyzing trace with hash 35554775, now seen corresponding path program 4 times [2024-11-07 16:15:42,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 16:15:42,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652837224] [2024-11-07 16:15:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 16:15:42,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 16:15:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 16:15:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 16:15:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 16:15:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652837224] [2024-11-07 16:15:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652837224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 16:15:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983723315] [2024-11-07 16:15:43,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 16:15:43,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 16:15:43,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 16:15:43,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 16:15:43,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 16:15:43,289 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 16:15:43,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 16:15:43,290 WARN L253 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-07 16:15:43,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 16:15:43,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-07 16:15:43,749 INFO L349 Elim1Store]: treesize reduction 8, result has 76.5 percent of original size [2024-11-07 16:15:43,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2024-11-07 16:15:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:15:43,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 16:15:44,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-07 16:15:44,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2024-11-07 16:15:44,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-07 16:15:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-07 16:15:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983723315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 16:15:44,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 16:15:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 29 [2024-11-07 16:15:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709520975] [2024-11-07 16:15:44,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 16:15:44,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-07 16:15:44,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 16:15:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-07 16:15:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2024-11-07 16:15:44,222 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 16:15:44,806 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-07 16:15:44,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-07 16:15:44,806 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-07 16:15:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 16:15:44,807 INFO L225 Difference]: With dead ends: 40 [2024-11-07 16:15:44,807 INFO L226 Difference]: Without dead ends: 0 [2024-11-07 16:15:44,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=246, Invalid=1476, Unknown=0, NotChecked=0, Total=1722 [2024-11-07 16:15:44,808 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-07 16:15:44,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 92 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-07 16:15:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-07 16:15:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-07 16:15:44,809 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) [2024-11-07 16:15:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-07 16:15:44,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2024-11-07 16:15:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 16:15:44,810 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-07 16:15:44,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6896551724137931) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 16:15:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-07 16:15:44,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-07 16:15:44,812 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2024-11-07 16:15:44,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-07 16:15:44,813 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-07 16:15:44,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-07 16:15:44,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-07 16:15:44,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-07 16:15:44,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-07 16:15:44,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 16:15:45,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 16:15:45,018 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 16:15:45,020 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-07 16:15:45,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:15:45 BoogieIcfgContainer [2024-11-07 16:15:45,022 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-07 16:15:45,023 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-07 16:15:45,023 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-07 16:15:45,023 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-07 16:15:45,024 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:15:37" (3/4) ... [2024-11-07 16:15:45,025 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-07 16:15:45,031 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-07 16:15:45,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-07 16:15:45,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-07 16:15:45,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-07 16:15:45,089 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-07 16:15:45,089 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-07 16:15:45,089 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-07 16:15:45,091 INFO L158 Benchmark]: Toolchain (without parser) took 8171.17ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 84.7MB in the beginning and 85.5MB in the end (delta: -772.0kB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2024-11-07 16:15:45,091 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory is still 48.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:15:45,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.08ms. Allocated memory is still 109.1MB. Free memory was 84.6MB in the beginning and 68.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 16:15:45,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.02ms. Allocated memory is still 109.1MB. Free memory was 68.4MB in the beginning and 66.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:15:45,092 INFO L158 Benchmark]: Boogie Preprocessor took 38.30ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 65.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:15:45,092 INFO L158 Benchmark]: RCFGBuilder took 243.46ms. Allocated memory is still 109.1MB. Free memory was 65.4MB in the beginning and 54.1MB in the end (delta: 11.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-07 16:15:45,092 INFO L158 Benchmark]: TraceAbstraction took 7501.56ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 53.6MB in the beginning and 89.1MB in the end (delta: -35.5MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2024-11-07 16:15:45,093 INFO L158 Benchmark]: Witness Printer took 66.43ms. Allocated memory is still 167.8MB. Free memory was 89.1MB in the beginning and 85.5MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-07 16:15:45,094 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory is still 48.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.08ms. Allocated memory is still 109.1MB. Free memory was 84.6MB in the beginning and 68.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.02ms. Allocated memory is still 109.1MB. Free memory was 68.4MB in the beginning and 66.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.30ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 65.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 243.46ms. Allocated memory is still 109.1MB. Free memory was 65.4MB in the beginning and 54.1MB in the end (delta: 11.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7501.56ms. Allocated memory was 109.1MB in the beginning and 167.8MB in the end (delta: 58.7MB). Free memory was 53.6MB in the beginning and 89.1MB in the end (delta: -35.5MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * Witness Printer took 66.43ms. Allocated memory is still 167.8MB. Free memory was 89.1MB in the beginning and 85.5MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 652 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 460 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1100 IncrementalHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 192 mSDtfsCounter, 1100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 276 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 34 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 257 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 318 ConstructedInterpolants, 7 QuantifiedInterpolants, 2556 SizeOfPredicates, 27 NumberOfNonLiveVariables, 422 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 30/104 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-07 16:15:45,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE