./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash deade1e5790a25ffe3efe3f50079c7cd07ab83afaa52029d4373e6401cf093c7 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 16:51:20,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 16:51:20,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-20 16:51:20,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 16:51:20,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 16:51:20,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 16:51:20,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 16:51:20,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 16:51:20,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 16:51:20,155 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 16:51:20,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 16:51:20,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 16:51:20,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 16:51:20,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 16:51:20,158 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 16:51:20,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 16:51:20,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 16:51:20,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 16:51:20,161 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 16:51:20,164 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 16:51:20,164 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 16:51:20,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 16:51:20,165 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 16:51:20,165 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 16:51:20,166 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 16:51:20,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 16:51:20,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 16:51:20,166 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 16:51:20,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 16:51:20,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 16:51:20,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 16:51:20,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 16:51:20,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 16:51:20,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 16:51:20,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 16:51:20,168 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 16:51:20,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 16:51:20,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 16:51:20,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 16:51:20,170 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deade1e5790a25ffe3efe3f50079c7cd07ab83afaa52029d4373e6401cf093c7 [2024-11-20 16:51:20,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 16:51:20,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 16:51:20,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 16:51:20,435 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 16:51:20,435 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 16:51:20,436 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2024-11-20 16:51:21,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 16:51:22,136 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 16:51:22,138 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2024-11-20 16:51:22,159 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9775005/3491b8263a304011b93dd571c73a33bd/FLAGdcb4f3990 [2024-11-20 16:51:22,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e9775005/3491b8263a304011b93dd571c73a33bd [2024-11-20 16:51:22,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 16:51:22,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 16:51:22,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 16:51:22,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 16:51:22,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 16:51:22,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:51:22" (1/1) ... [2024-11-20 16:51:22,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a402ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:22, skipping insertion in model container [2024-11-20 16:51:22,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:51:22" (1/1) ... [2024-11-20 16:51:22,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 16:51:23,040 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:23,056 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:23,058 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:23,067 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:23,082 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:23,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 16:51:23,123 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 16:51:23,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 16:51:23,280 INFO L204 MainTranslator]: Completed translation [2024-11-20 16:51:23,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23 WrapperNode [2024-11-20 16:51:23,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 16:51:23,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 16:51:23,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 16:51:23,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 16:51:23,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,366 INFO L138 Inliner]: procedures = 344, calls = 498, calls flagged for inlining = 8, calls inlined = 7, statements flattened = 663 [2024-11-20 16:51:23,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 16:51:23,368 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 16:51:23,368 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 16:51:23,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 16:51:23,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,436 INFO L175 MemorySlicer]: Split 450 memory accesses to 15 slices as follows [2, 2, 3, 3, 3, 4, 4, 4, 4, 3, 44, 355, 6, 11, 2]. 79 percent of accesses are in the largest equivalence class. The 423 initializations are split as follows [2, 0, 3, 3, 3, 3, 3, 3, 3, 3, 42, 355, 0, 0, 0]. The 9 writes are split as follows [0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 2, 1]. [2024-11-20 16:51:23,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,474 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 16:51:23,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 16:51:23,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 16:51:23,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 16:51:23,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (1/1) ... [2024-11-20 16:51:23,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 16:51:23,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:23,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 16:51:23,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 16:51:23,598 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-20 16:51:23,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-20 16:51:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 16:51:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 16:51:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 16:51:23,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 16:51:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-20 16:51:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-20 16:51:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-20 16:51:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-20 16:51:23,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 16:51:23,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-20 16:51:23,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-20 16:51:23,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-20 16:51:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-20 16:51:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-20 16:51:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-20 16:51:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-20 16:51:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-20 16:51:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-20 16:51:23,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-20 16:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 16:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 16:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 16:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 16:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 16:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-20 16:51:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-20 16:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-20 16:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-20 16:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-20 16:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-20 16:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-20 16:51:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-20 16:51:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-20 16:51:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-20 16:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-20 16:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-20 16:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 16:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 16:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 16:51:23,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 16:51:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 16:51:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 16:51:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-20 16:51:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-20 16:51:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-20 16:51:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-20 16:51:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-20 16:51:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-20 16:51:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-20 16:51:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-20 16:51:23,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-20 16:51:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 16:51:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 16:51:23,873 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 16:51:23,875 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 16:51:24,543 INFO L? ?]: Removed 168 outVars from TransFormulas that were not future-live. [2024-11-20 16:51:24,543 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 16:51:24,563 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 16:51:24,565 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-20 16:51:24,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:51:24 BoogieIcfgContainer [2024-11-20 16:51:24,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 16:51:24,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 16:51:24,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 16:51:24,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 16:51:24,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:51:22" (1/3) ... [2024-11-20 16:51:24,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a65f945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:51:24, skipping insertion in model container [2024-11-20 16:51:24,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:23" (2/3) ... [2024-11-20 16:51:24,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a65f945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:51:24, skipping insertion in model container [2024-11-20 16:51:24,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:51:24" (3/3) ... [2024-11-20 16:51:24,575 INFO L112 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2024-11-20 16:51:24,587 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 16:51:24,588 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 74 error locations. [2024-11-20 16:51:24,624 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 16:51:24,632 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;@11692b9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 16:51:24,633 INFO L334 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2024-11-20 16:51:24,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 179 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-20 16:51:24,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:24,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-20 16:51:24,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:24,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:24,653 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-20 16:51:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:24,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837085058] [2024-11-20 16:51:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:25,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:25,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837085058] [2024-11-20 16:51:25,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837085058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:25,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:25,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:51:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424522510] [2024-11-20 16:51:25,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:25,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:25,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:25,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:25,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:25,196 INFO L87 Difference]: Start difference. First operand has 182 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 179 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 16:51:25,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:25,359 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2024-11-20 16:51:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:25,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-20 16:51:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:25,373 INFO L225 Difference]: With dead ends: 140 [2024-11-20 16:51:25,374 INFO L226 Difference]: Without dead ends: 140 [2024-11-20 16:51:25,375 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 [2024-11-20 16:51:25,378 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 143 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:25,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 98 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:25,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-20 16:51:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-20 16:51:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 83 states have (on average 1.8313253012048192) internal successors, (152), 137 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-11-20 16:51:25,417 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 3 [2024-11-20 16:51:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:25,417 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-11-20 16:51:25,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 16:51:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-11-20 16:51:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-20 16:51:25,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:25,418 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-20 16:51:25,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 16:51:25,419 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:25,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:25,419 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-20 16:51:25,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:25,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174329152] [2024-11-20 16:51:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:25,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174329152] [2024-11-20 16:51:25,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174329152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:25,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:25,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:51:25,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780230587] [2024-11-20 16:51:25,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:25,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:25,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:25,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:25,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:25,723 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 16:51:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:25,882 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2024-11-20 16:51:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-20 16:51:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:25,885 INFO L225 Difference]: With dead ends: 139 [2024-11-20 16:51:25,885 INFO L226 Difference]: Without dead ends: 139 [2024-11-20 16:51:25,885 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 [2024-11-20 16:51:25,886 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:25,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 235 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:25,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-20 16:51:25,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-20 16:51:25,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 83 states have (on average 1.819277108433735) internal successors, (151), 136 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2024-11-20 16:51:25,900 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 3 [2024-11-20 16:51:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:25,900 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2024-11-20 16:51:25,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 16:51:25,901 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2024-11-20 16:51:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-20 16:51:25,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:25,901 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 16:51:25,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 16:51:25,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:25,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:25,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-20 16:51:25,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:25,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228979510] [2024-11-20 16:51:25,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:25,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:26,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:26,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228979510] [2024-11-20 16:51:26,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228979510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:26,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:26,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 16:51:26,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135024849] [2024-11-20 16:51:26,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:26,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 16:51:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:26,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 16:51:26,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:51:26,187 INFO L87 Difference]: Start difference. First operand 139 states and 153 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2024-11-20 16:51:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:26,325 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2024-11-20 16:51:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 16:51:26,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2024-11-20 16:51:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:26,328 INFO L225 Difference]: With dead ends: 142 [2024-11-20 16:51:26,328 INFO L226 Difference]: Without dead ends: 142 [2024-11-20 16:51:26,328 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 [2024-11-20 16:51:26,329 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:26,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 233 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-20 16:51:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2024-11-20 16:51:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 85 states have (on average 1.8) internal successors, (153), 138 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2024-11-20 16:51:26,345 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 6 [2024-11-20 16:51:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:26,345 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2024-11-20 16:51:26,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2024-11-20 16:51:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2024-11-20 16:51:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 16:51:26,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:26,346 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:26,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 16:51:26,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:26,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash 71430167, now seen corresponding path program 1 times [2024-11-20 16:51:26,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:26,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793554636] [2024-11-20 16:51:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:26,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:26,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793554636] [2024-11-20 16:51:26,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793554636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:26,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196102589] [2024-11-20 16:51:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:26,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:26,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:26,740 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:26,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 16:51:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:27,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 16:51:27,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:27,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:27,241 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 7 treesize of output 5 [2024-11-20 16:51:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:27,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196102589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:27,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:27,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-20 16:51:27,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679220216] [2024-11-20 16:51:27,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:27,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 16:51:27,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:27,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 16:51:27,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-20 16:51:27,262 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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) [2024-11-20 16:51:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:27,584 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2024-11-20 16:51:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 16:51:27,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-20 16:51:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:27,585 INFO L225 Difference]: With dead ends: 145 [2024-11-20 16:51:27,585 INFO L226 Difference]: Without dead ends: 145 [2024-11-20 16:51:27,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-11-20 16:51:27,587 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 159 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:27,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 587 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 16:51:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-20 16:51:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-20 16:51:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 90 states have (on average 1.7444444444444445) internal successors, (157), 142 states have internal predecessors, (157), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2024-11-20 16:51:27,594 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 9 [2024-11-20 16:51:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:27,594 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2024-11-20 16:51:27,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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) [2024-11-20 16:51:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2024-11-20 16:51:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-20 16:51:27,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:27,595 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:27,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:27,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:27,800 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:27,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:27,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1928131846, now seen corresponding path program 1 times [2024-11-20 16:51:27,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:27,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728279598] [2024-11-20 16:51:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:28,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-20 16:51:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:28,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:28,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728279598] [2024-11-20 16:51:28,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728279598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:28,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602957003] [2024-11-20 16:51:28,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:28,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:28,099 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:28,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 16:51:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:28,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 16:51:28,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:28,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602957003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:28,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:28,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 16:51:28,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789527500] [2024-11-20 16:51:28,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:28,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 16:51:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:28,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 16:51:28,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:51:28,468 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 16:51:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:28,518 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2024-11-20 16:51:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 16:51:28,519 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-20 16:51:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:28,519 INFO L225 Difference]: With dead ends: 160 [2024-11-20 16:51:28,520 INFO L226 Difference]: Without dead ends: 160 [2024-11-20 16:51:28,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:51:28,521 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 4 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:28,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 874 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:51:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-20 16:51:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-20 16:51:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 105 states have (on average 1.638095238095238) internal successors, (172), 157 states have internal predecessors, (172), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2024-11-20 16:51:28,537 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 22 [2024-11-20 16:51:28,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:28,537 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2024-11-20 16:51:28,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 16:51:28,538 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2024-11-20 16:51:28,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-20 16:51:28,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:28,539 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:28,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:28,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:28,740 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:28,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash 922180072, now seen corresponding path program 2 times [2024-11-20 16:51:28,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:28,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924655615] [2024-11-20 16:51:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:28,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:29,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-20 16:51:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924655615] [2024-11-20 16:51:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924655615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:29,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747593252] [2024-11-20 16:51:29,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 16:51:29,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:29,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:29,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:29,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 16:51:29,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 16:51:29,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 16:51:29,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 16:51:29,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:29,438 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-20 16:51:29,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-20 16:51:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-20 16:51:29,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 16:51:29,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747593252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:29,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 16:51:29,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2024-11-20 16:51:29,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434637167] [2024-11-20 16:51:29,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:29,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:29,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:29,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-20 16:51:29,474 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:29,591 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2024-11-20 16:51:29,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:29,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-20 16:51:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:29,594 INFO L225 Difference]: With dead ends: 155 [2024-11-20 16:51:29,594 INFO L226 Difference]: Without dead ends: 155 [2024-11-20 16:51:29,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-20 16:51:29,596 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 126 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:29,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 103 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-20 16:51:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2024-11-20 16:51:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 105 states have (on average 1.5904761904761904) internal successors, (167), 152 states have internal predecessors, (167), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2024-11-20 16:51:29,607 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 37 [2024-11-20 16:51:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:29,607 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2024-11-20 16:51:29,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2024-11-20 16:51:29,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-20 16:51:29,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:29,612 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:29,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 16:51:29,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:29,813 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:29,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:29,814 INFO L85 PathProgramCache]: Analyzing trace with hash 922180073, now seen corresponding path program 1 times [2024-11-20 16:51:29,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:29,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194858811] [2024-11-20 16:51:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:29,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:30,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-20 16:51:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:30,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194858811] [2024-11-20 16:51:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194858811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:30,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104122639] [2024-11-20 16:51:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:30,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:30,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:30,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:30,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 16:51:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:30,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 16:51:30,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:30,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104122639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:30,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-20 16:51:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479021363] [2024-11-20 16:51:30,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:30,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 16:51:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 16:51:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:51:30,626 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 16:51:30,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:30,699 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2024-11-20 16:51:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:51:30,699 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-20 16:51:30,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:30,700 INFO L225 Difference]: With dead ends: 161 [2024-11-20 16:51:30,700 INFO L226 Difference]: Without dead ends: 161 [2024-11-20 16:51:30,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:51:30,701 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 2 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:30,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 704 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-20 16:51:30,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-20 16:51:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 111 states have (on average 1.5585585585585586) internal successors, (173), 158 states have internal predecessors, (173), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 175 transitions. [2024-11-20 16:51:30,706 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 175 transitions. Word has length 37 [2024-11-20 16:51:30,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:30,706 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 175 transitions. [2024-11-20 16:51:30,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 16:51:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 175 transitions. [2024-11-20 16:51:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 16:51:30,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:30,708 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:30,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 16:51:30,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:30,912 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:30,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:30,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1261940567, now seen corresponding path program 2 times [2024-11-20 16:51:30,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:30,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020427718] [2024-11-20 16:51:30,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:30,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:31,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:31,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:31,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020427718] [2024-11-20 16:51:31,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020427718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:31,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:31,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 16:51:31,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715853682] [2024-11-20 16:51:31,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:31,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 16:51:31,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:31,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 16:51:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:31,670 INFO L87 Difference]: Start difference. First operand 161 states and 175 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:31,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:31,876 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2024-11-20 16:51:31,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2024-11-20 16:51:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:31,878 INFO L225 Difference]: With dead ends: 251 [2024-11-20 16:51:31,878 INFO L226 Difference]: Without dead ends: 251 [2024-11-20 16:51:31,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:31,879 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 234 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:31,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 397 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-20 16:51:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 160. [2024-11-20 16:51:31,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 157 states have internal predecessors, (172), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2024-11-20 16:51:31,885 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 43 [2024-11-20 16:51:31,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:31,886 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2024-11-20 16:51:31,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:31,887 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2024-11-20 16:51:31,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-20 16:51:31,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:31,888 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:31,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 16:51:31,889 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:31,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash -622712191, now seen corresponding path program 1 times [2024-11-20 16:51:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199975020] [2024-11-20 16:51:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:32,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:32,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199975020] [2024-11-20 16:51:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199975020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:32,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:32,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 16:51:32,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698572795] [2024-11-20 16:51:32,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:32,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 16:51:32,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:32,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 16:51:32,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:32,321 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:32,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:32,551 INFO L93 Difference]: Finished difference Result 181 states and 198 transitions. [2024-11-20 16:51:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:32,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2024-11-20 16:51:32,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:32,553 INFO L225 Difference]: With dead ends: 181 [2024-11-20 16:51:32,553 INFO L226 Difference]: Without dead ends: 181 [2024-11-20 16:51:32,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-20 16:51:32,555 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 315 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:32,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 185 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:32,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-20 16:51:32,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-20 16:51:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 125 states have (on average 1.552) internal successors, (194), 171 states have internal predecessors, (194), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 196 transitions. [2024-11-20 16:51:32,560 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 196 transitions. Word has length 46 [2024-11-20 16:51:32,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:32,562 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 196 transitions. [2024-11-20 16:51:32,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:32,562 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 196 transitions. [2024-11-20 16:51:32,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-20 16:51:32,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:32,563 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:32,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 16:51:32,564 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:32,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2124209265, now seen corresponding path program 1 times [2024-11-20 16:51:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:32,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214692791] [2024-11-20 16:51:32,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:32,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:32,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:32,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:32,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214692791] [2024-11-20 16:51:32,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214692791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:32,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:32,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 16:51:32,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342891544] [2024-11-20 16:51:32,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:32,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 16:51:32,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:32,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 16:51:32,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:51:32,799 INFO L87 Difference]: Start difference. First operand 174 states and 196 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:32,924 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2024-11-20 16:51:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 16:51:32,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-20 16:51:32,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:32,926 INFO L225 Difference]: With dead ends: 168 [2024-11-20 16:51:32,926 INFO L226 Difference]: Without dead ends: 168 [2024-11-20 16:51:32,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:32,927 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 188 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:32,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 130 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-20 16:51:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-20 16:51:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 125 states have (on average 1.504) internal successors, (188), 165 states have internal predecessors, (188), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 190 transitions. [2024-11-20 16:51:32,932 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 190 transitions. Word has length 47 [2024-11-20 16:51:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:32,932 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 190 transitions. [2024-11-20 16:51:32,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 190 transitions. [2024-11-20 16:51:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-20 16:51:32,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:32,933 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:32,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 16:51:32,934 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:32,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2124209264, now seen corresponding path program 1 times [2024-11-20 16:51:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019677589] [2024-11-20 16:51:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:33,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:33,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019677589] [2024-11-20 16:51:33,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019677589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:33,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:33,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 16:51:33,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612574245] [2024-11-20 16:51:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:33,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 16:51:33,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:33,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 16:51:33,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:33,260 INFO L87 Difference]: Start difference. First operand 168 states and 190 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:33,316 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2024-11-20 16:51:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:33,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-20 16:51:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:33,319 INFO L225 Difference]: With dead ends: 175 [2024-11-20 16:51:33,319 INFO L226 Difference]: Without dead ends: 175 [2024-11-20 16:51:33,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:33,319 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 146 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:33,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 502 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-20 16:51:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2024-11-20 16:51:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 125 states have (on average 1.496) internal successors, (187), 165 states have internal predecessors, (187), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2024-11-20 16:51:33,324 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 47 [2024-11-20 16:51:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:33,325 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2024-11-20 16:51:33,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2024-11-20 16:51:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 16:51:33,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:33,328 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:33,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 16:51:33,328 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:33,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1255141546, now seen corresponding path program 1 times [2024-11-20 16:51:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:33,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516740630] [2024-11-20 16:51:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:33,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:33,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:33,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:33,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516740630] [2024-11-20 16:51:33,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516740630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:33,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:33,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:51:33,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570520545] [2024-11-20 16:51:33,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:33,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:33,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:33,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:33,631 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:33,703 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2024-11-20 16:51:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:33,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-20 16:51:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:33,705 INFO L225 Difference]: With dead ends: 167 [2024-11-20 16:51:33,705 INFO L226 Difference]: Without dead ends: 167 [2024-11-20 16:51:33,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:33,706 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 117 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:33,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 107 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-20 16:51:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-20 16:51:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 125 states have (on average 1.48) internal successors, (185), 164 states have internal predecessors, (185), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2024-11-20 16:51:33,710 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 49 [2024-11-20 16:51:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:33,710 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2024-11-20 16:51:33,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2024-11-20 16:51:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 16:51:33,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:33,714 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:33,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 16:51:33,730 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:33,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:33,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1255141545, now seen corresponding path program 1 times [2024-11-20 16:51:33,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:33,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843526599] [2024-11-20 16:51:33,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:33,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:34,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843526599] [2024-11-20 16:51:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843526599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:34,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:34,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 16:51:34,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529055439] [2024-11-20 16:51:34,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:34,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 16:51:34,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:34,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 16:51:34,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 16:51:34,455 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:34,728 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2024-11-20 16:51:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:34,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-20 16:51:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:34,729 INFO L225 Difference]: With dead ends: 173 [2024-11-20 16:51:34,729 INFO L226 Difference]: Without dead ends: 173 [2024-11-20 16:51:34,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-20 16:51:34,730 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 289 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:34,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 254 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-20 16:51:34,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-11-20 16:51:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 125 states have (on average 1.472) internal successors, (184), 164 states have internal predecessors, (184), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 186 transitions. [2024-11-20 16:51:34,734 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 186 transitions. Word has length 49 [2024-11-20 16:51:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:34,734 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 186 transitions. [2024-11-20 16:51:34,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 186 transitions. [2024-11-20 16:51:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 16:51:34,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:34,735 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:34,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 16:51:34,735 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:34,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:34,736 INFO L85 PathProgramCache]: Analyzing trace with hash 63507943, now seen corresponding path program 1 times [2024-11-20 16:51:34,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:34,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820377264] [2024-11-20 16:51:34,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:35,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820377264] [2024-11-20 16:51:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820377264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:35,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:35,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 16:51:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400187007] [2024-11-20 16:51:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:35,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 16:51:35,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 16:51:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:35,100 INFO L87 Difference]: Start difference. First operand 167 states and 186 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:35,235 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2024-11-20 16:51:35,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 16:51:35,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-20 16:51:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:35,236 INFO L225 Difference]: With dead ends: 166 [2024-11-20 16:51:35,236 INFO L226 Difference]: Without dead ends: 166 [2024-11-20 16:51:35,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:35,237 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 14 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:35,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 369 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:35,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-20 16:51:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-20 16:51:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 125 states have (on average 1.456) internal successors, (182), 163 states have internal predecessors, (182), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2024-11-20 16:51:35,241 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 52 [2024-11-20 16:51:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:35,241 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2024-11-20 16:51:35,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2024-11-20 16:51:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-20 16:51:35,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:35,242 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:35,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 16:51:35,243 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:35,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash 63507944, now seen corresponding path program 1 times [2024-11-20 16:51:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125394051] [2024-11-20 16:51:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:35,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:35,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125394051] [2024-11-20 16:51:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125394051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:35,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:35,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 16:51:35,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159347006] [2024-11-20 16:51:35,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:35,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 16:51:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 16:51:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:35,769 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:35,928 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2024-11-20 16:51:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 16:51:35,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-20 16:51:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:35,930 INFO L225 Difference]: With dead ends: 165 [2024-11-20 16:51:35,930 INFO L226 Difference]: Without dead ends: 165 [2024-11-20 16:51:35,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:35,931 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 13 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:35,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 349 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-20 16:51:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-20 16:51:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 125 states have (on average 1.44) internal successors, (180), 162 states have internal predecessors, (180), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:35,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 182 transitions. [2024-11-20 16:51:35,935 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 182 transitions. Word has length 52 [2024-11-20 16:51:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:35,935 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 182 transitions. [2024-11-20 16:51:35,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 182 transitions. [2024-11-20 16:51:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 16:51:35,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:35,936 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:35,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 16:51:35,937 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:35,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1393895268, now seen corresponding path program 1 times [2024-11-20 16:51:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:35,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136405840] [2024-11-20 16:51:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:36,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:36,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:36,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136405840] [2024-11-20 16:51:36,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136405840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:36,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:36,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 16:51:36,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784700915] [2024-11-20 16:51:36,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:36,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 16:51:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:36,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 16:51:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:36,136 INFO L87 Difference]: Start difference. First operand 165 states and 182 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:36,258 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2024-11-20 16:51:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 16:51:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-20 16:51:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:36,260 INFO L225 Difference]: With dead ends: 164 [2024-11-20 16:51:36,260 INFO L226 Difference]: Without dead ends: 164 [2024-11-20 16:51:36,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:36,260 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 7 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:36,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 402 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-20 16:51:36,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-20 16:51:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 125 states have (on average 1.424) internal successors, (178), 161 states have internal predecessors, (178), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2024-11-20 16:51:36,264 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 57 [2024-11-20 16:51:36,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:36,265 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2024-11-20 16:51:36,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2024-11-20 16:51:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-20 16:51:36,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:36,265 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:36,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 16:51:36,266 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:36,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:36,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1393895267, now seen corresponding path program 1 times [2024-11-20 16:51:36,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:36,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093425589] [2024-11-20 16:51:36,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:36,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:36,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:36,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:36,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093425589] [2024-11-20 16:51:36,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093425589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:36,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:36,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 16:51:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707998973] [2024-11-20 16:51:36,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:36,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 16:51:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 16:51:36,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 16:51:36,953 INFO L87 Difference]: Start difference. First operand 164 states and 180 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:37,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:37,225 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2024-11-20 16:51:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 16:51:37,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-20 16:51:37,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:37,226 INFO L225 Difference]: With dead ends: 174 [2024-11-20 16:51:37,227 INFO L226 Difference]: Without dead ends: 174 [2024-11-20 16:51:37,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 16:51:37,227 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 13 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:37,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 482 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-20 16:51:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-11-20 16:51:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 133 states have (on average 1.406015037593985) internal successors, (187), 169 states have internal predecessors, (187), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 189 transitions. [2024-11-20 16:51:37,231 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 189 transitions. Word has length 57 [2024-11-20 16:51:37,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:37,231 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 189 transitions. [2024-11-20 16:51:37,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 189 transitions. [2024-11-20 16:51:37,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 16:51:37,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:37,232 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:37,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 16:51:37,234 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:37,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:37,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2032404121, now seen corresponding path program 1 times [2024-11-20 16:51:37,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:37,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216356693] [2024-11-20 16:51:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:37,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:38,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:38,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:38,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216356693] [2024-11-20 16:51:38,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216356693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:38,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485953616] [2024-11-20 16:51:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:38,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:38,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:38,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:38,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 16:51:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:38,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-20 16:51:38,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:38,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 16:51:38,467 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 23 treesize of output 1 [2024-11-20 16:51:38,472 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 23 treesize of output 1 [2024-11-20 16:51:38,674 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 25 treesize of output 9 [2024-11-20 16:51:38,685 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 36 treesize of output 12 [2024-11-20 16:51:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:38,713 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:38,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485953616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:38,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:38,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-20 16:51:38,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507494561] [2024-11-20 16:51:38,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:38,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 16:51:38,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:38,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 16:51:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-20 16:51:38,966 INFO L87 Difference]: Start difference. First operand 172 states and 189 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:39,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:39,674 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2024-11-20 16:51:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:51:39,675 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2024-11-20 16:51:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:39,675 INFO L225 Difference]: With dead ends: 185 [2024-11-20 16:51:39,676 INFO L226 Difference]: Without dead ends: 185 [2024-11-20 16:51:39,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-11-20 16:51:39,677 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 28 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:39,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1136 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 16:51:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-20 16:51:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-20 16:51:39,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 182 states have internal predecessors, (200), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 202 transitions. [2024-11-20 16:51:39,681 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 202 transitions. Word has length 62 [2024-11-20 16:51:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:39,681 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 202 transitions. [2024-11-20 16:51:39,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 202 transitions. [2024-11-20 16:51:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-20 16:51:39,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:39,682 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:39,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:39,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 16:51:39,886 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:39,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:39,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2031913739, now seen corresponding path program 1 times [2024-11-20 16:51:39,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:39,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307048582] [2024-11-20 16:51:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:39,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:40,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:40,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:40,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307048582] [2024-11-20 16:51:40,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307048582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:40,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894868348] [2024-11-20 16:51:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:40,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:40,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:40,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:40,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 16:51:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:40,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 16:51:40,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:40,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:40,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894868348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:40,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:40,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 16:51:40,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180593119] [2024-11-20 16:51:40,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:40,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 16:51:40,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 16:51:40,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:51:40,600 INFO L87 Difference]: Start difference. First operand 185 states and 202 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:40,639 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2024-11-20 16:51:40,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 16:51:40,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2024-11-20 16:51:40,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:40,640 INFO L225 Difference]: With dead ends: 242 [2024-11-20 16:51:40,640 INFO L226 Difference]: Without dead ends: 242 [2024-11-20 16:51:40,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:51:40,641 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 25 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:40,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 403 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:51:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-20 16:51:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2024-11-20 16:51:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 197 states have (on average 1.2944162436548223) internal successors, (255), 232 states have internal predecessors, (255), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:40,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 257 transitions. [2024-11-20 16:51:40,647 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 257 transitions. Word has length 73 [2024-11-20 16:51:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:40,647 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 257 transitions. [2024-11-20 16:51:40,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 257 transitions. [2024-11-20 16:51:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-20 16:51:40,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:40,648 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:40,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:40,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:40,852 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:40,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1704710159, now seen corresponding path program 2 times [2024-11-20 16:51:40,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749121512] [2024-11-20 16:51:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:40,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:41,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:41,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749121512] [2024-11-20 16:51:41,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749121512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:41,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549099880] [2024-11-20 16:51:41,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 16:51:41,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:41,192 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:41,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 16:51:41,596 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 16:51:41,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 16:51:41,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 16:51:41,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:41,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:41,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549099880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:41,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:41,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-20 16:51:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625117339] [2024-11-20 16:51:41,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:41,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 16:51:41,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:41,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 16:51:41,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:51:41,775 INFO L87 Difference]: Start difference. First operand 235 states and 257 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:41,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:41,821 INFO L93 Difference]: Finished difference Result 264 states and 279 transitions. [2024-11-20 16:51:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:51:41,821 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2024-11-20 16:51:41,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:41,822 INFO L225 Difference]: With dead ends: 264 [2024-11-20 16:51:41,822 INFO L226 Difference]: Without dead ends: 264 [2024-11-20 16:51:41,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 188 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:51:41,823 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 26 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:41,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 537 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:51:41,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-20 16:51:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2024-11-20 16:51:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 217 states have (on average 1.2764976958525345) internal successors, (277), 252 states have internal predecessors, (277), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 279 transitions. [2024-11-20 16:51:41,828 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 279 transitions. Word has length 98 [2024-11-20 16:51:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:41,829 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 279 transitions. [2024-11-20 16:51:41,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 279 transitions. [2024-11-20 16:51:41,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-20 16:51:41,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:41,830 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:41,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 16:51:42,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:42,031 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:42,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1582169487, now seen corresponding path program 3 times [2024-11-20 16:51:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818090116] [2024-11-20 16:51:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:42,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:42,811 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:42,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:42,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818090116] [2024-11-20 16:51:42,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818090116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:42,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963175249] [2024-11-20 16:51:42,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 16:51:42,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:42,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:42,814 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:42,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 16:51:43,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 16:51:43,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 16:51:43,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-20 16:51:43,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:43,327 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 16:51:43,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 16:51:43,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-20 16:51:43,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:51:43,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-20 16:51:44,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:44,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-20 16:51:44,308 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-20 16:51:44,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-20 16:51:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:44,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:45,700 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 159 treesize of output 153 [2024-11-20 16:51:45,766 INFO L349 Elim1Store]: treesize reduction 18, result has 77.8 percent of original size [2024-11-20 16:51:45,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 136 [2024-11-20 16:51:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:45,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963175249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:45,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:45,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2024-11-20 16:51:45,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063742487] [2024-11-20 16:51:45,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:45,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 16:51:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 16:51:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2024-11-20 16:51:45,879 INFO L87 Difference]: Start difference. First operand 255 states and 279 transitions. Second operand has 27 states, 26 states have (on average 3.0) internal successors, (78), 27 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:46,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:46,677 INFO L93 Difference]: Finished difference Result 377 states and 398 transitions. [2024-11-20 16:51:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 16:51:46,678 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.0) internal successors, (78), 27 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2024-11-20 16:51:46,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:46,679 INFO L225 Difference]: With dead ends: 377 [2024-11-20 16:51:46,679 INFO L226 Difference]: Without dead ends: 377 [2024-11-20 16:51:46,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 16:51:46,681 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 768 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:46,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 589 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 16:51:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-20 16:51:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 196. [2024-11-20 16:51:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 162 states have (on average 1.2839506172839505) internal successors, (208), 193 states have internal predecessors, (208), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 210 transitions. [2024-11-20 16:51:46,686 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 210 transitions. Word has length 108 [2024-11-20 16:51:46,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:46,686 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 210 transitions. [2024-11-20 16:51:46,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.0) internal successors, (78), 27 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 210 transitions. [2024-11-20 16:51:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-20 16:51:46,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:46,688 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:46,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:46,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-20 16:51:46,892 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:46,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:46,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1802614368, now seen corresponding path program 1 times [2024-11-20 16:51:46,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:46,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956226398] [2024-11-20 16:51:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:46,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:47,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:47,641 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:47,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956226398] [2024-11-20 16:51:47,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956226398] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119231365] [2024-11-20 16:51:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:47,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:47,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:47,645 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:47,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 16:51:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:48,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-20 16:51:48,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:48,199 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:51:48,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:51:48,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-20 16:51:48,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 16:51:48,315 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 12 treesize of output 4 [2024-11-20 16:51:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-20 16:51:48,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:48,852 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 49 treesize of output 45 [2024-11-20 16:51:48,879 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-20 16:51:48,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 49 [2024-11-20 16:51:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:48,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119231365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:48,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:48,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2024-11-20 16:51:48,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508029841] [2024-11-20 16:51:48,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:48,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 16:51:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 16:51:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-11-20 16:51:48,941 INFO L87 Difference]: Start difference. First operand 196 states and 210 transitions. Second operand has 21 states, 20 states have (on average 4.15) internal successors, (83), 21 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:49,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:49,512 INFO L93 Difference]: Finished difference Result 258 states and 276 transitions. [2024-11-20 16:51:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 16:51:49,513 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.15) internal successors, (83), 21 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2024-11-20 16:51:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:49,514 INFO L225 Difference]: With dead ends: 258 [2024-11-20 16:51:49,515 INFO L226 Difference]: Without dead ends: 258 [2024-11-20 16:51:49,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2024-11-20 16:51:49,516 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 658 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:49,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 446 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 16:51:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-20 16:51:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 195. [2024-11-20 16:51:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 165 states have (on average 1.2545454545454546) internal successors, (207), 192 states have internal predecessors, (207), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2024-11-20 16:51:49,521 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 109 [2024-11-20 16:51:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:49,521 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2024-11-20 16:51:49,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.15) internal successors, (83), 21 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2024-11-20 16:51:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-20 16:51:49,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:49,523 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:49,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 16:51:49,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:49,724 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:49,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1440091801, now seen corresponding path program 1 times [2024-11-20 16:51:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268680425] [2024-11-20 16:51:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:49,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:50,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268680425] [2024-11-20 16:51:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268680425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151327353] [2024-11-20 16:51:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:50,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:50,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:50,823 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:50,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 16:51:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:51,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-20 16:51:51,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:51,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-20 16:51:51,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 16:51:51,344 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-20 16:51:51,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2024-11-20 16:51:51,530 INFO L349 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2024-11-20 16:51:51,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 45 [2024-11-20 16:51:51,557 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:51:51,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:51:51,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:51:53,000 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 28 treesize of output 20 [2024-11-20 16:51:53,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:53,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2024-11-20 16:51:53,277 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:51:53,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:51:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2024-11-20 16:51:53,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:54,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 16:51:54,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-20 16:51:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:54,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151327353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:54,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:54,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 23 [2024-11-20 16:51:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700616695] [2024-11-20 16:51:54,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:54,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 16:51:54,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 16:51:54,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-20 16:51:54,673 INFO L87 Difference]: Start difference. First operand 195 states and 209 transitions. Second operand has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:55,382 INFO L93 Difference]: Finished difference Result 313 states and 330 transitions. [2024-11-20 16:51:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:51:55,382 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 111 [2024-11-20 16:51:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:55,384 INFO L225 Difference]: With dead ends: 313 [2024-11-20 16:51:55,384 INFO L226 Difference]: Without dead ends: 313 [2024-11-20 16:51:55,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=213, Invalid=657, Unknown=0, NotChecked=0, Total=870 [2024-11-20 16:51:55,385 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 488 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:55,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 623 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 16:51:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-20 16:51:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 190. [2024-11-20 16:51:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 161 states have (on average 1.2546583850931676) internal successors, (202), 187 states have internal predecessors, (202), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 204 transitions. [2024-11-20 16:51:55,390 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 204 transitions. Word has length 111 [2024-11-20 16:51:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:55,390 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 204 transitions. [2024-11-20 16:51:55,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.086956521739131) internal successors, (94), 24 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2024-11-20 16:51:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-20 16:51:55,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:55,391 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:55,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 16:51:55,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-20 16:51:55,592 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:55,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1084474507, now seen corresponding path program 1 times [2024-11-20 16:51:55,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:55,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916519420] [2024-11-20 16:51:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:55,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:51:55,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:55,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916519420] [2024-11-20 16:51:55,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916519420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:55,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:55,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 16:51:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770716593] [2024-11-20 16:51:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:55,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 16:51:55,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 16:51:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:55,892 INFO L87 Difference]: Start difference. First operand 190 states and 204 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:55,941 INFO L93 Difference]: Finished difference Result 196 states and 211 transitions. [2024-11-20 16:51:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 16:51:55,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2024-11-20 16:51:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:55,942 INFO L225 Difference]: With dead ends: 196 [2024-11-20 16:51:55,943 INFO L226 Difference]: Without dead ends: 196 [2024-11-20 16:51:55,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:55,944 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 5 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:55,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 454 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:51:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-20 16:51:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-20 16:51:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 164 states have (on average 1.25) internal successors, (205), 190 states have internal predecessors, (205), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 207 transitions. [2024-11-20 16:51:55,947 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 207 transitions. Word has length 114 [2024-11-20 16:51:55,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:55,948 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 207 transitions. [2024-11-20 16:51:55,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:55,948 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 207 transitions. [2024-11-20 16:51:55,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-20 16:51:55,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:55,949 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:55,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 16:51:55,949 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:55,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1755409201, now seen corresponding path program 1 times [2024-11-20 16:51:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617024993] [2024-11-20 16:51:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:57,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:51:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:57,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617024993] [2024-11-20 16:51:57,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617024993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:57,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120735818] [2024-11-20 16:51:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:57,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:57,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:57,745 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:57,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 16:51:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:58,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-20 16:51:58,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:58,260 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 15 treesize of output 11 [2024-11-20 16:51:58,264 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 15 treesize of output 11 [2024-11-20 16:51:58,337 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-20 16:51:58,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-20 16:51:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:58,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-20 16:51:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:58,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:59,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120735818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:59,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:59,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2024-11-20 16:51:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665259646] [2024-11-20 16:51:59,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:59,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 16:51:59,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 16:51:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-20 16:51:59,447 INFO L87 Difference]: Start difference. First operand 193 states and 207 transitions. Second operand has 22 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 22 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:59,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:59,744 INFO L93 Difference]: Finished difference Result 280 states and 297 transitions. [2024-11-20 16:51:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 16:51:59,748 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 22 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2024-11-20 16:51:59,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:59,749 INFO L225 Difference]: With dead ends: 280 [2024-11-20 16:51:59,749 INFO L226 Difference]: Without dead ends: 280 [2024-11-20 16:51:59,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2024-11-20 16:51:59,750 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 223 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:59,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1084 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-20 16:51:59,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2024-11-20 16:51:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 229 states have (on average 1.1877729257641922) internal successors, (272), 255 states have internal predecessors, (272), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 274 transitions. [2024-11-20 16:51:59,759 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 274 transitions. Word has length 115 [2024-11-20 16:51:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:59,760 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 274 transitions. [2024-11-20 16:51:59,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 22 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 274 transitions. [2024-11-20 16:51:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-20 16:51:59,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:59,761 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:59,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:59,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-20 16:51:59,965 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:51:59,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1569983125, now seen corresponding path program 1 times [2024-11-20 16:51:59,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:59,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650952559] [2024-11-20 16:51:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:00,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:52:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:00,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:00,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650952559] [2024-11-20 16:52:00,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650952559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:00,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:00,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 16:52:00,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383255237] [2024-11-20 16:52:00,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:00,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:52:00,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:52:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:00,189 INFO L87 Difference]: Start difference. First operand 258 states and 274 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:00,198 INFO L93 Difference]: Finished difference Result 259 states and 275 transitions. [2024-11-20 16:52:00,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:52:00,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2024-11-20 16:52:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:00,200 INFO L225 Difference]: With dead ends: 259 [2024-11-20 16:52:00,200 INFO L226 Difference]: Without dead ends: 259 [2024-11-20 16:52:00,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:00,201 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:00,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:52:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-20 16:52:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-20 16:52:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 230 states have (on average 1.1869565217391305) internal successors, (273), 256 states have internal predecessors, (273), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:00,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 275 transitions. [2024-11-20 16:52:00,206 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 275 transitions. Word has length 119 [2024-11-20 16:52:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:00,206 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 275 transitions. [2024-11-20 16:52:00,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 275 transitions. [2024-11-20 16:52:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-20 16:52:00,207 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:00,207 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:00,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 16:52:00,208 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:52:00,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash -797238300, now seen corresponding path program 1 times [2024-11-20 16:52:00,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:00,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768245365] [2024-11-20 16:52:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:00,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:01,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:52:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 75 proven. 3 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-20 16:52:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768245365] [2024-11-20 16:52:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768245365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121108693] [2024-11-20 16:52:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:01,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:01,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:01,224 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:01,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 16:52:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:01,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 16:52:01,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:01,780 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 16:52:01,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 16:52:01,887 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-20 16:52:01,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 16:52:01,902 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 16:52:01,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-20 16:52:01,961 INFO L349 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2024-11-20 16:52:01,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 37 [2024-11-20 16:52:02,017 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 23 treesize of output 1 [2024-11-20 16:52:02,162 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 52 treesize of output 28 [2024-11-20 16:52:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-20 16:52:02,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:02,725 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-20 16:52:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121108693] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:02,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 16:52:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 7] total 23 [2024-11-20 16:52:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364892851] [2024-11-20 16:52:02,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:02,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 16:52:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 16:52:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-20 16:52:02,727 INFO L87 Difference]: Start difference. First operand 259 states and 275 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:02,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:02,804 INFO L93 Difference]: Finished difference Result 257 states and 273 transitions. [2024-11-20 16:52:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:52:02,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2024-11-20 16:52:02,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:02,805 INFO L225 Difference]: With dead ends: 257 [2024-11-20 16:52:02,805 INFO L226 Difference]: Without dead ends: 257 [2024-11-20 16:52:02,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-20 16:52:02,806 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 91 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:02,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 80 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:52:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-20 16:52:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2024-11-20 16:52:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 230 states have (on average 1.1782608695652175) internal successors, (271), 254 states have internal predecessors, (271), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 273 transitions. [2024-11-20 16:52:02,811 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 273 transitions. Word has length 120 [2024-11-20 16:52:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:02,811 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 273 transitions. [2024-11-20 16:52:02,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 273 transitions. [2024-11-20 16:52:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-20 16:52:02,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:02,813 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:02,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 16:52:03,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-20 16:52:03,013 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:52:03,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash -797238299, now seen corresponding path program 1 times [2024-11-20 16:52:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:03,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556490061] [2024-11-20 16:52:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:03,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:04,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:52:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:04,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556490061] [2024-11-20 16:52:04,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556490061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:04,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305714777] [2024-11-20 16:52:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:04,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:04,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:04,743 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:04,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 16:52:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:05,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-20 16:52:05,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:05,281 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 16:52:05,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 16:52:05,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:05,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:05,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:05,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2024-11-20 16:52:05,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:05,579 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-20 16:52:05,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-20 16:52:05,677 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 16:52:05,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-20 16:52:05,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:05,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-20 16:52:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-20 16:52:06,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:07,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305714777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:07,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 16:52:07,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 26 [2024-11-20 16:52:07,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50018759] [2024-11-20 16:52:07,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:07,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 16:52:07,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:07,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 16:52:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 16:52:07,289 INFO L87 Difference]: Start difference. First operand 257 states and 273 transitions. Second operand has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:52:08,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:08,013 INFO L93 Difference]: Finished difference Result 320 states and 337 transitions. [2024-11-20 16:52:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 16:52:08,014 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 120 [2024-11-20 16:52:08,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:08,015 INFO L225 Difference]: With dead ends: 320 [2024-11-20 16:52:08,015 INFO L226 Difference]: Without dead ends: 320 [2024-11-20 16:52:08,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=1456, Unknown=0, NotChecked=0, Total=1980 [2024-11-20 16:52:08,018 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 872 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:08,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 520 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 16:52:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-20 16:52:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 258. [2024-11-20 16:52:08,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 232 states have (on average 1.1724137931034482) internal successors, (272), 255 states have internal predecessors, (272), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 274 transitions. [2024-11-20 16:52:08,025 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 274 transitions. Word has length 120 [2024-11-20 16:52:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:08,026 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 274 transitions. [2024-11-20 16:52:08,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:52:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 274 transitions. [2024-11-20 16:52:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-20 16:52:08,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:08,027 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:08,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-20 16:52:08,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-20 16:52:08,228 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:52:08,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash 643168889, now seen corresponding path program 1 times [2024-11-20 16:52:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:08,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815487085] [2024-11-20 16:52:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:10,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:52:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:10,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:10,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815487085] [2024-11-20 16:52:10,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815487085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:10,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997398044] [2024-11-20 16:52:10,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:10,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:10,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:10,548 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:10,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 16:52:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:11,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-20 16:52:11,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:11,095 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 16:52:11,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 16:52:11,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:11,370 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-20 16:52:11,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-20 16:52:11,399 INFO L349 Elim1Store]: treesize reduction 36, result has 21.7 percent of original size [2024-11-20 16:52:11,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 21 [2024-11-20 16:52:11,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:11,422 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 16:52:11,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2024-11-20 16:52:11,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:11,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:11,560 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 16:52:11,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-11-20 16:52:11,586 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-11-20 16:52:11,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2024-11-20 16:52:11,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 16:52:12,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2024-11-20 16:52:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2024-11-20 16:52:12,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997398044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:13,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 16:52:13,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 25 [2024-11-20 16:52:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726665322] [2024-11-20 16:52:13,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:13,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 16:52:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 16:52:13,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 16:52:13,670 INFO L87 Difference]: Start difference. First operand 258 states and 274 transitions. Second operand has 26 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:52:14,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:14,877 INFO L93 Difference]: Finished difference Result 265 states and 281 transitions. [2024-11-20 16:52:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 16:52:14,878 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2024-11-20 16:52:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:14,879 INFO L225 Difference]: With dead ends: 265 [2024-11-20 16:52:14,879 INFO L226 Difference]: Without dead ends: 265 [2024-11-20 16:52:14,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=518, Invalid=1552, Unknown=0, NotChecked=0, Total=2070 [2024-11-20 16:52:14,880 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 802 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:14,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 484 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 16:52:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-20 16:52:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2024-11-20 16:52:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 238 states have (on average 1.1680672268907564) internal successors, (278), 261 states have internal predecessors, (278), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 280 transitions. [2024-11-20 16:52:14,887 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 280 transitions. Word has length 123 [2024-11-20 16:52:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:14,887 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 280 transitions. [2024-11-20 16:52:14,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:52:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 280 transitions. [2024-11-20 16:52:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-20 16:52:14,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:14,889 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:14,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-20 16:52:15,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:15,089 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:52:15,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1983922937, now seen corresponding path program 2 times [2024-11-20 16:52:15,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:15,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419915990] [2024-11-20 16:52:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:15,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:17,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:52:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:17,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:17,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419915990] [2024-11-20 16:52:17,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419915990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:17,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343768970] [2024-11-20 16:52:17,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 16:52:17,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:17,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:17,629 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:17,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 16:52:18,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 16:52:18,130 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 16:52:18,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-20 16:52:18,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:18,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:18,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:18,205 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 16:52:18,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 16:52:18,423 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 16:52:18,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-20 16:52:18,432 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:52:18,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:52:18,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:18,442 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-20 16:52:18,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 1 [2024-11-20 16:52:18,492 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 16:52:18,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-20 16:52:18,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-20 16:52:19,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-20 16:52:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-20 16:52:19,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343768970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:19,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 16:52:19,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 27 [2024-11-20 16:52:19,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159488717] [2024-11-20 16:52:19,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:19,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-20 16:52:19,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:19,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-20 16:52:19,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2024-11-20 16:52:19,788 INFO L87 Difference]: Start difference. First operand 264 states and 280 transitions. Second operand has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 28 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:52:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:20,351 INFO L93 Difference]: Finished difference Result 277 states and 293 transitions. [2024-11-20 16:52:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 16:52:20,352 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 28 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2024-11-20 16:52:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:20,353 INFO L225 Difference]: With dead ends: 277 [2024-11-20 16:52:20,353 INFO L226 Difference]: Without dead ends: 277 [2024-11-20 16:52:20,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=476, Invalid=1594, Unknown=0, NotChecked=0, Total=2070 [2024-11-20 16:52:20,355 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 903 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:20,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 460 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 16:52:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-20 16:52:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276. [2024-11-20 16:52:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 250 states have (on average 1.16) internal successors, (290), 273 states have internal predecessors, (290), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 292 transitions. [2024-11-20 16:52:20,361 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 292 transitions. Word has length 129 [2024-11-20 16:52:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:20,361 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 292 transitions. [2024-11-20 16:52:20,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.222222222222222) internal successors, (114), 28 states have internal predecessors, (114), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:52:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 292 transitions. [2024-11-20 16:52:20,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-20 16:52:20,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:20,362 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:20,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-20 16:52:20,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:20,567 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:52:20,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1095519239, now seen corresponding path program 3 times [2024-11-20 16:52:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:20,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654377615] [2024-11-20 16:52:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:20,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:22,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:52:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654377615] [2024-11-20 16:52:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654377615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:22,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762327455] [2024-11-20 16:52:22,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 16:52:22,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:22,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:22,124 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:22,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 16:52:22,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 16:52:22,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 16:52:22,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-20 16:52:22,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:22,641 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 16:52:22,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 16:52:22,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:22,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:22,888 INFO L349 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2024-11-20 16:52:22,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 28 [2024-11-20 16:52:22,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2024-11-20 16:52:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:52:22,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:22,974 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-20 16:52:22,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-20 16:52:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2024-11-20 16:52:23,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:23,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762327455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:23,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 16:52:23,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 24 [2024-11-20 16:52:23,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178145000] [2024-11-20 16:52:23,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:23,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 16:52:23,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:23,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 16:52:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2024-11-20 16:52:23,937 INFO L87 Difference]: Start difference. First operand 276 states and 292 transitions. Second operand has 25 states, 24 states have (on average 4.916666666666667) internal successors, (118), 25 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:52:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:24,596 INFO L93 Difference]: Finished difference Result 279 states and 295 transitions. [2024-11-20 16:52:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 16:52:24,597 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.916666666666667) internal successors, (118), 25 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 141 [2024-11-20 16:52:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:24,598 INFO L225 Difference]: With dead ends: 279 [2024-11-20 16:52:24,598 INFO L226 Difference]: Without dead ends: 279 [2024-11-20 16:52:24,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=404, Invalid=1318, Unknown=0, NotChecked=0, Total=1722 [2024-11-20 16:52:24,599 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 752 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:24,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 627 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 16:52:24,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-20 16:52:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2024-11-20 16:52:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 252 states have (on average 1.1547619047619047) internal successors, (291), 274 states have internal predecessors, (291), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 293 transitions. [2024-11-20 16:52:24,603 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 293 transitions. Word has length 141 [2024-11-20 16:52:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:24,605 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 293 transitions. [2024-11-20 16:52:24,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.916666666666667) internal successors, (118), 25 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:52:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 293 transitions. [2024-11-20 16:52:24,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-20 16:52:24,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:24,607 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:24,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 16:52:24,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:24,808 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-20 16:52:24,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1378339180, now seen corresponding path program 1 times [2024-11-20 16:52:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:24,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025623495] [2024-11-20 16:52:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:25,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 16:52:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:25,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025623495] [2024-11-20 16:52:25,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025623495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:25,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342629496] [2024-11-20 16:52:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:25,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:25,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:25,197 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:25,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 16:52:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:25,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 16:52:25,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:25,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342629496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:52:25,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:52:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-20 16:52:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605899595] [2024-11-20 16:52:25,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:25,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 16:52:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 16:52:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-20 16:52:25,972 INFO L87 Difference]: Start difference. First operand 277 states and 293 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:26,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:26,049 INFO L93 Difference]: Finished difference Result 307 states and 323 transitions. [2024-11-20 16:52:26,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-20 16:52:26,049 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 148 [2024-11-20 16:52:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:26,051 INFO L225 Difference]: With dead ends: 307 [2024-11-20 16:52:26,051 INFO L226 Difference]: Without dead ends: 307 [2024-11-20 16:52:26,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-20 16:52:26,052 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 4 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:26,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 464 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:52:26,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-11-20 16:52:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2024-11-20 16:52:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 282 states have (on average 1.1382978723404256) internal successors, (321), 304 states have internal predecessors, (321), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 323 transitions. [2024-11-20 16:52:26,057 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 323 transitions. Word has length 148 [2024-11-20 16:52:26,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:26,057 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 323 transitions. [2024-11-20 16:52:26,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:26,058 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 323 transitions. [2024-11-20 16:52:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-20 16:52:26,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:26,059 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:26,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0