./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 08:55:57,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 08:55:57,184 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-19 08:55:57,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 08:55:57,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 08:55:57,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 08:55:57,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 08:55:57,226 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 08:55:57,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 08:55:57,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 08:55:57,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 08:55:57,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 08:55:57,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 08:55:57,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 08:55:57,231 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 08:55:57,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 08:55:57,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 08:55:57,232 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 08:55:57,232 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 08:55:57,232 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 08:55:57,233 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 08:55:57,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 08:55:57,233 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 08:55:57,233 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 08:55:57,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 08:55:57,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 08:55:57,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 08:55:57,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 08:55:57,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 08:55:57,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 08:55:57,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 08:55:57,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 08:55:57,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 08:55:57,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 08:55:57,236 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 08:55:57,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 08:55:57,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 08:55:57,237 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 08:55:57,237 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 08:55:57,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deade1e5790a25ffe3efe3f50079c7cd07ab83afaa52029d4373e6401cf093c7 [2024-11-19 08:55:57,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 08:55:57,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 08:55:57,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 08:55:57,465 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 08:55:57,466 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 08:55:57,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2024-11-19 08:55:58,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 08:55:58,989 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 08:55:58,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2024-11-19 08:55:59,012 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41680ec6f/d376c8545289446b99768824f5572a8c/FLAGa98be73cc [2024-11-19 08:55:59,027 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41680ec6f/d376c8545289446b99768824f5572a8c [2024-11-19 08:55:59,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 08:55:59,031 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 08:55:59,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 08:55:59,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 08:55:59,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 08:55:59,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8ccf7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59, skipping insertion in model container [2024-11-19 08:55:59,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,082 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 08:55:59,453 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:59,468 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:59,468 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:59,475 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:59,488 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 08:55:59,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 08:55:59,517 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 08:55:59,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 08:55:59,657 INFO L204 MainTranslator]: Completed translation [2024-11-19 08:55:59,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59 WrapperNode [2024-11-19 08:55:59,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 08:55:59,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 08:55:59,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 08:55:59,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 08:55:59,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,721 INFO L138 Inliner]: procedures = 344, calls = 498, calls flagged for inlining = 8, calls inlined = 7, statements flattened = 663 [2024-11-19 08:55:59,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 08:55:59,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 08:55:59,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 08:55:59,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 08:55:59,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,745 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,783 INFO L175 MemorySlicer]: Split 450 memory accesses to 15 slices as follows [2, 3, 3, 3, 4, 4, 4, 4, 3, 44, 355, 2, 2, 6, 11]. 79 percent of accesses are in the largest equivalence class. The 423 initializations are split as follows [2, 3, 3, 3, 3, 3, 3, 3, 3, 42, 355, 0, 0, 0, 0]. The 9 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 1, 2, 2, 2]. [2024-11-19 08:55:59,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 08:55:59,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 08:55:59,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 08:55:59,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 08:55:59,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (1/1) ... [2024-11-19 08:55:59,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 08:55:59,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:55:59,945 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) [2024-11-19 08:55:59,954 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 [2024-11-19 08:55:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 08:55:59,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 08:55:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 08:55:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 08:55:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 08:55:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-19 08:55:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-19 08:55:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-19 08:55:59,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 08:55:59,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 08:55:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 08:55:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 08:55:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-19 08:55:59,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 08:55:59,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-19 08:55:59,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-19 08:55:59,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-19 08:55:59,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-19 08:55:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-19 08:55:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-19 08:55:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-19 08:55:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-19 08:55:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-19 08:55:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 08:55:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 08:56:00,184 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 08:56:00,186 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 08:56:00,703 INFO L? ?]: Removed 168 outVars from TransFormulas that were not future-live. [2024-11-19 08:56:00,703 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 08:56:00,716 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 08:56:00,716 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-19 08:56:00,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:56:00 BoogieIcfgContainer [2024-11-19 08:56:00,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 08:56:00,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 08:56:00,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 08:56:00,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 08:56:00,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:55:59" (1/3) ... [2024-11-19 08:56:00,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16475921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:56:00, skipping insertion in model container [2024-11-19 08:56:00,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:55:59" (2/3) ... [2024-11-19 08:56:00,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16475921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:56:00, skipping insertion in model container [2024-11-19 08:56:00,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:56:00" (3/3) ... [2024-11-19 08:56:00,723 INFO L112 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2024-11-19 08:56:00,736 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 08:56:00,736 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 74 error locations. [2024-11-19 08:56:00,801 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 08:56:00,807 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;@7e1f235d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 08:56:00,807 INFO L334 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2024-11-19 08:56:00,814 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) [2024-11-19 08:56:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-19 08:56:00,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:00,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-19 08:56:00,821 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)] === [2024-11-19 08:56:00,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-19 08:56:00,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656150429] [2024-11-19 08:56:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:00,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:01,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656150429] [2024-11-19 08:56:01,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656150429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:01,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:01,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:01,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442485855] [2024-11-19 08:56:01,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:01,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:01,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:01,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:01,290 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) [2024-11-19 08:56:01,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:01,437 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2024-11-19 08:56:01,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:01,439 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 [2024-11-19 08:56:01,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:01,446 INFO L225 Difference]: With dead ends: 140 [2024-11-19 08:56:01,446 INFO L226 Difference]: Without dead ends: 140 [2024-11-19 08:56:01,448 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 [2024-11-19 08:56:01,451 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 [2024-11-19 08:56:01,453 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] [2024-11-19 08:56:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-19 08:56:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-19 08:56:01,487 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) [2024-11-19 08:56:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-11-19 08:56:01,490 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 3 [2024-11-19 08:56:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:01,490 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-11-19 08:56:01,490 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) [2024-11-19 08:56:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-11-19 08:56:01,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-19 08:56:01,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:01,491 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-19 08:56:01,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 08:56:01,491 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)] === [2024-11-19 08:56:01,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:01,492 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-19 08:56:01,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:01,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303416915] [2024-11-19 08:56:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:01,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:01,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:01,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303416915] [2024-11-19 08:56:01,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303416915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:01,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:01,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:01,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953128488] [2024-11-19 08:56:01,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:01,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:01,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:01,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:01,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:01,693 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) [2024-11-19 08:56:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:01,795 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2024-11-19 08:56:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:01,796 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 [2024-11-19 08:56:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:01,797 INFO L225 Difference]: With dead ends: 139 [2024-11-19 08:56:01,798 INFO L226 Difference]: Without dead ends: 139 [2024-11-19 08:56:01,799 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 [2024-11-19 08:56:01,799 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 [2024-11-19 08:56:01,800 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] [2024-11-19 08:56:01,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-19 08:56:01,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-19 08:56:01,807 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) [2024-11-19 08:56:01,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2024-11-19 08:56:01,808 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 3 [2024-11-19 08:56:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:01,809 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2024-11-19 08:56:01,809 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) [2024-11-19 08:56:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2024-11-19 08:56:01,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 08:56:01,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:01,809 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 08:56:01,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 08:56:01,810 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)] === [2024-11-19 08:56:01,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:01,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-19 08:56:01,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:01,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508244724] [2024-11-19 08:56:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:01,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:02,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508244724] [2024-11-19 08:56:02,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508244724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:02,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:02,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 08:56:02,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725044776] [2024-11-19 08:56:02,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:02,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 08:56:02,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:02,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 08:56:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:56:02,030 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) [2024-11-19 08:56:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:02,136 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2024-11-19 08:56:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 08:56:02,137 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 [2024-11-19 08:56:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:02,139 INFO L225 Difference]: With dead ends: 142 [2024-11-19 08:56:02,139 INFO L226 Difference]: Without dead ends: 142 [2024-11-19 08:56:02,139 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 [2024-11-19 08:56:02,140 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 [2024-11-19 08:56:02,140 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] [2024-11-19 08:56:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-19 08:56:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2024-11-19 08:56:02,149 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) [2024-11-19 08:56:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2024-11-19 08:56:02,152 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 6 [2024-11-19 08:56:02,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:02,153 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2024-11-19 08:56:02,153 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) [2024-11-19 08:56:02,153 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2024-11-19 08:56:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 08:56:02,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:02,153 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:02,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 08:56:02,153 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)] === [2024-11-19 08:56:02,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:02,154 INFO L85 PathProgramCache]: Analyzing trace with hash 71430167, now seen corresponding path program 1 times [2024-11-19 08:56:02,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:02,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133587276] [2024-11-19 08:56:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:02,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:02,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:02,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:02,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133587276] [2024-11-19 08:56:02,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133587276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:02,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157828288] [2024-11-19 08:56:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:02,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:02,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:02,418 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) [2024-11-19 08:56:02,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 08:56:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:02,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 08:56:02,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:02,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:02,842 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 [2024-11-19 08:56:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:02,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157828288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:02,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:02,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-19 08:56:02,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348829430] [2024-11-19 08:56:02,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:02,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 08:56:02,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:02,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 08:56:02,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-19 08:56:02,858 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) [2024-11-19 08:56:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:03,121 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2024-11-19 08:56:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 08:56:03,121 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 [2024-11-19 08:56:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:03,122 INFO L225 Difference]: With dead ends: 145 [2024-11-19 08:56:03,122 INFO L226 Difference]: Without dead ends: 145 [2024-11-19 08:56:03,122 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 [2024-11-19 08:56:03,123 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:03,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 587 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-19 08:56:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-19 08:56:03,128 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) [2024-11-19 08:56:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2024-11-19 08:56:03,128 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 9 [2024-11-19 08:56:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:03,129 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2024-11-19 08:56:03,129 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) [2024-11-19 08:56:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2024-11-19 08:56:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 08:56:03,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:03,129 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:03,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 08:56:03,330 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 [2024-11-19 08:56:03,330 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)] === [2024-11-19 08:56:03,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1928131846, now seen corresponding path program 1 times [2024-11-19 08:56:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:03,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669926922] [2024-11-19 08:56:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:03,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:03,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669926922] [2024-11-19 08:56:03,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669926922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:03,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561306856] [2024-11-19 08:56:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:03,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:03,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:03,530 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) [2024-11-19 08:56:03,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 08:56:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:03,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 08:56:03,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:03,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:03,756 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:03,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561306856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:03,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:03,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-19 08:56:03,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893850002] [2024-11-19 08:56:03,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:03,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 08:56:03,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:03,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 08:56:03,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:03,811 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) [2024-11-19 08:56:03,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:03,848 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2024-11-19 08:56:03,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 08:56:03,848 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 [2024-11-19 08:56:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:03,849 INFO L225 Difference]: With dead ends: 160 [2024-11-19 08:56:03,849 INFO L226 Difference]: Without dead ends: 160 [2024-11-19 08:56:03,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:03,850 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 4 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:03,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 729 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-19 08:56:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-19 08:56:03,855 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) [2024-11-19 08:56:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2024-11-19 08:56:03,856 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 22 [2024-11-19 08:56:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:03,856 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2024-11-19 08:56:03,856 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) [2024-11-19 08:56:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2024-11-19 08:56:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 08:56:03,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:03,857 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:03,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 08:56:04,057 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 [2024-11-19 08:56:04,058 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)] === [2024-11-19 08:56:04,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash 922180072, now seen corresponding path program 2 times [2024-11-19 08:56:04,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:04,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116520502] [2024-11-19 08:56:04,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:04,099 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 08:56:04,099 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-19 08:56:04,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:04,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116520502] [2024-11-19 08:56:04,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116520502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:04,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:04,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:04,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349486019] [2024-11-19 08:56:04,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:04,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:04,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:04,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:04,223 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) [2024-11-19 08:56:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:04,296 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2024-11-19 08:56:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:04,297 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 [2024-11-19 08:56:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:04,298 INFO L225 Difference]: With dead ends: 155 [2024-11-19 08:56:04,298 INFO L226 Difference]: Without dead ends: 155 [2024-11-19 08:56:04,298 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 [2024-11-19 08:56:04,299 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 [2024-11-19 08:56:04,299 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] [2024-11-19 08:56:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-19 08:56:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2024-11-19 08:56:04,304 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) [2024-11-19 08:56:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2024-11-19 08:56:04,304 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 37 [2024-11-19 08:56:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:04,305 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2024-11-19 08:56:04,305 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) [2024-11-19 08:56:04,305 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2024-11-19 08:56:04,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 08:56:04,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:04,306 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:04,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 08:56:04,306 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)] === [2024-11-19 08:56:04,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash 922180073, now seen corresponding path program 1 times [2024-11-19 08:56:04,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:04,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688688891] [2024-11-19 08:56:04,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:04,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:04,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688688891] [2024-11-19 08:56:04,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688688891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470459533] [2024-11-19 08:56:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:04,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:04,525 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) [2024-11-19 08:56:04,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 08:56:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:04,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 08:56:04,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:04,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 08:56:04,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470459533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:04,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:04,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-19 08:56:04,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524905901] [2024-11-19 08:56:04,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:04,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 08:56:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 08:56:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:04,884 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) [2024-11-19 08:56:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:04,921 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2024-11-19 08:56:04,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:04,923 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 [2024-11-19 08:56:04,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:04,924 INFO L225 Difference]: With dead ends: 161 [2024-11-19 08:56:04,924 INFO L226 Difference]: Without dead ends: 161 [2024-11-19 08:56:04,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:04,924 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 2 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:04,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 284 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:04,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-19 08:56:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-19 08:56:04,934 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) [2024-11-19 08:56:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 175 transitions. [2024-11-19 08:56:04,935 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 175 transitions. Word has length 37 [2024-11-19 08:56:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:04,935 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 175 transitions. [2024-11-19 08:56:04,935 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) [2024-11-19 08:56:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 175 transitions. [2024-11-19 08:56:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 08:56:04,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:04,936 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:04,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:05,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:05,137 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)] === [2024-11-19 08:56:05,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1261940567, now seen corresponding path program 2 times [2024-11-19 08:56:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:05,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847415072] [2024-11-19 08:56:05,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:05,188 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 08:56:05,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:05,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:05,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847415072] [2024-11-19 08:56:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847415072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:05,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:05,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 08:56:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494399266] [2024-11-19 08:56:05,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:05,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 08:56:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 08:56:05,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:05,428 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) [2024-11-19 08:56:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:05,579 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2024-11-19 08:56:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 08:56:05,580 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 [2024-11-19 08:56:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:05,581 INFO L225 Difference]: With dead ends: 251 [2024-11-19 08:56:05,581 INFO L226 Difference]: Without dead ends: 251 [2024-11-19 08:56:05,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:05,582 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 338 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:05,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 390 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-19 08:56:05,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 160. [2024-11-19 08:56:05,587 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) [2024-11-19 08:56:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2024-11-19 08:56:05,589 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 43 [2024-11-19 08:56:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:05,589 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2024-11-19 08:56:05,590 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) [2024-11-19 08:56:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2024-11-19 08:56:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 08:56:05,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:05,591 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:56:05,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 08:56:05,591 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)] === [2024-11-19 08:56:05,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:05,591 INFO L85 PathProgramCache]: Analyzing trace with hash -622712191, now seen corresponding path program 1 times [2024-11-19 08:56:05,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:05,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023809761] [2024-11-19 08:56:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:05,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:05,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:05,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023809761] [2024-11-19 08:56:05,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023809761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:05,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:05,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 08:56:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101201012] [2024-11-19 08:56:05,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:05,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 08:56:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 08:56:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:05,912 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) [2024-11-19 08:56:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:06,101 INFO L93 Difference]: Finished difference Result 181 states and 198 transitions. [2024-11-19 08:56:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 08:56:06,102 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 [2024-11-19 08:56:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:06,103 INFO L225 Difference]: With dead ends: 181 [2024-11-19 08:56:06,103 INFO L226 Difference]: Without dead ends: 181 [2024-11-19 08:56:06,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-19 08:56:06,104 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 187 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:06,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 194 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-19 08:56:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-19 08:56:06,107 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) [2024-11-19 08:56:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 196 transitions. [2024-11-19 08:56:06,107 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 196 transitions. Word has length 46 [2024-11-19 08:56:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:06,107 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 196 transitions. [2024-11-19 08:56:06,108 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) [2024-11-19 08:56:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 196 transitions. [2024-11-19 08:56:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 08:56:06,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:06,108 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] [2024-11-19 08:56:06,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 08:56:06,109 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)] === [2024-11-19 08:56:06,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:06,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2124209265, now seen corresponding path program 1 times [2024-11-19 08:56:06,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:06,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656171080] [2024-11-19 08:56:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:06,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:06,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656171080] [2024-11-19 08:56:06,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656171080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:06,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:06,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 08:56:06,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370800636] [2024-11-19 08:56:06,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:06,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 08:56:06,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 08:56:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 08:56:06,250 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) [2024-11-19 08:56:06,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:06,336 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2024-11-19 08:56:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 08:56:06,336 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 [2024-11-19 08:56:06,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:06,337 INFO L225 Difference]: With dead ends: 168 [2024-11-19 08:56:06,337 INFO L226 Difference]: Without dead ends: 168 [2024-11-19 08:56:06,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:56:06,338 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 [2024-11-19 08:56:06,338 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] [2024-11-19 08:56:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-19 08:56:06,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-19 08:56:06,341 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) [2024-11-19 08:56:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 190 transitions. [2024-11-19 08:56:06,341 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 190 transitions. Word has length 47 [2024-11-19 08:56:06,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:06,341 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 190 transitions. [2024-11-19 08:56:06,342 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) [2024-11-19 08:56:06,342 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 190 transitions. [2024-11-19 08:56:06,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 08:56:06,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:06,342 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] [2024-11-19 08:56:06,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 08:56:06,343 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)] === [2024-11-19 08:56:06,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2124209264, now seen corresponding path program 1 times [2024-11-19 08:56:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:06,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562022573] [2024-11-19 08:56:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:06,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562022573] [2024-11-19 08:56:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562022573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:06,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 08:56:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357410893] [2024-11-19 08:56:06,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:06,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 08:56:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 08:56:06,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:06,597 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) [2024-11-19 08:56:06,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:06,644 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2024-11-19 08:56:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 08:56:06,645 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 [2024-11-19 08:56:06,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:06,645 INFO L225 Difference]: With dead ends: 175 [2024-11-19 08:56:06,645 INFO L226 Difference]: Without dead ends: 175 [2024-11-19 08:56:06,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:06,646 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:06,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 502 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-19 08:56:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2024-11-19 08:56:06,648 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) [2024-11-19 08:56:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2024-11-19 08:56:06,651 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 47 [2024-11-19 08:56:06,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:06,651 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2024-11-19 08:56:06,652 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) [2024-11-19 08:56:06,652 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2024-11-19 08:56:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 08:56:06,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:06,654 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] [2024-11-19 08:56:06,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 08:56:06,654 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)] === [2024-11-19 08:56:06,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1255141546, now seen corresponding path program 1 times [2024-11-19 08:56:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566905709] [2024-11-19 08:56:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:06,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:06,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566905709] [2024-11-19 08:56:06,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566905709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:06,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:06,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 08:56:06,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506142497] [2024-11-19 08:56:06,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:06,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:06,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:06,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:06,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:06,830 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) [2024-11-19 08:56:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:06,899 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2024-11-19 08:56:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:06,899 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 [2024-11-19 08:56:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:06,900 INFO L225 Difference]: With dead ends: 167 [2024-11-19 08:56:06,900 INFO L226 Difference]: Without dead ends: 167 [2024-11-19 08:56:06,900 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:06,900 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 [2024-11-19 08:56:06,900 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] [2024-11-19 08:56:06,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-19 08:56:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-19 08:56:06,903 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) [2024-11-19 08:56:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2024-11-19 08:56:06,903 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 49 [2024-11-19 08:56:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:06,903 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2024-11-19 08:56:06,904 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) [2024-11-19 08:56:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2024-11-19 08:56:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 08:56:06,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:06,905 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] [2024-11-19 08:56:06,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 08:56:06,905 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)] === [2024-11-19 08:56:06,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1255141545, now seen corresponding path program 1 times [2024-11-19 08:56:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368129798] [2024-11-19 08:56:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:06,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:07,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:07,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368129798] [2024-11-19 08:56:07,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368129798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:07,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:07,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 08:56:07,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108540226] [2024-11-19 08:56:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:07,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 08:56:07,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:07,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 08:56:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 08:56:07,378 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) [2024-11-19 08:56:07,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:07,542 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2024-11-19 08:56:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:56:07,542 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 [2024-11-19 08:56:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:07,543 INFO L225 Difference]: With dead ends: 173 [2024-11-19 08:56:07,543 INFO L226 Difference]: Without dead ends: 173 [2024-11-19 08:56:07,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 08:56:07,544 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 289 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:07,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 203 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-19 08:56:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-11-19 08:56:07,547 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) [2024-11-19 08:56:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 186 transitions. [2024-11-19 08:56:07,547 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 186 transitions. Word has length 49 [2024-11-19 08:56:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:07,548 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 186 transitions. [2024-11-19 08:56:07,548 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) [2024-11-19 08:56:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 186 transitions. [2024-11-19 08:56:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 08:56:07,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:07,548 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] [2024-11-19 08:56:07,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 08:56:07,549 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)] === [2024-11-19 08:56:07,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 63507943, now seen corresponding path program 1 times [2024-11-19 08:56:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309289511] [2024-11-19 08:56:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309289511] [2024-11-19 08:56:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309289511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:56:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789848845] [2024-11-19 08:56:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:07,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 08:56:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 08:56:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:56:07,792 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) [2024-11-19 08:56:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:07,890 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2024-11-19 08:56:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:56:07,891 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 [2024-11-19 08:56:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:07,891 INFO L225 Difference]: With dead ends: 166 [2024-11-19 08:56:07,892 INFO L226 Difference]: Without dead ends: 166 [2024-11-19 08:56:07,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:07,892 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 [2024-11-19 08:56:07,892 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] [2024-11-19 08:56:07,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-19 08:56:07,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-19 08:56:07,894 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) [2024-11-19 08:56:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2024-11-19 08:56:07,895 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 52 [2024-11-19 08:56:07,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:07,895 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2024-11-19 08:56:07,895 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) [2024-11-19 08:56:07,895 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2024-11-19 08:56:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 08:56:07,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:07,896 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] [2024-11-19 08:56:07,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 08:56:07,896 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)] === [2024-11-19 08:56:07,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:07,896 INFO L85 PathProgramCache]: Analyzing trace with hash 63507944, now seen corresponding path program 1 times [2024-11-19 08:56:07,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:07,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097990715] [2024-11-19 08:56:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:07,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097990715] [2024-11-19 08:56:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097990715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:08,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:08,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:56:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678224605] [2024-11-19 08:56:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:08,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 08:56:08,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 08:56:08,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:56:08,309 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) [2024-11-19 08:56:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:08,426 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2024-11-19 08:56:08,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:56:08,427 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 [2024-11-19 08:56:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:08,428 INFO L225 Difference]: With dead ends: 165 [2024-11-19 08:56:08,428 INFO L226 Difference]: Without dead ends: 165 [2024-11-19 08:56:08,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:08,428 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 [2024-11-19 08:56:08,428 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] [2024-11-19 08:56:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-19 08:56:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-19 08:56:08,430 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) [2024-11-19 08:56:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 182 transitions. [2024-11-19 08:56:08,431 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 182 transitions. Word has length 52 [2024-11-19 08:56:08,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:08,431 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 182 transitions. [2024-11-19 08:56:08,431 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) [2024-11-19 08:56:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 182 transitions. [2024-11-19 08:56:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 08:56:08,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:08,432 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] [2024-11-19 08:56:08,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 08:56:08,432 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)] === [2024-11-19 08:56:08,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1393895268, now seen corresponding path program 1 times [2024-11-19 08:56:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740884959] [2024-11-19 08:56:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740884959] [2024-11-19 08:56:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740884959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:08,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 08:56:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017645216] [2024-11-19 08:56:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:08,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 08:56:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 08:56:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:56:08,556 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) [2024-11-19 08:56:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:08,646 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2024-11-19 08:56:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:56:08,647 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 [2024-11-19 08:56:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:08,648 INFO L225 Difference]: With dead ends: 164 [2024-11-19 08:56:08,648 INFO L226 Difference]: Without dead ends: 164 [2024-11-19 08:56:08,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:08,648 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 [2024-11-19 08:56:08,649 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] [2024-11-19 08:56:08,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-19 08:56:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-19 08:56:08,651 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) [2024-11-19 08:56:08,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2024-11-19 08:56:08,651 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 57 [2024-11-19 08:56:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:08,651 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2024-11-19 08:56:08,651 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) [2024-11-19 08:56:08,652 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2024-11-19 08:56:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 08:56:08,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:08,652 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] [2024-11-19 08:56:08,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 08:56:08,652 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)] === [2024-11-19 08:56:08,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:08,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1393895267, now seen corresponding path program 1 times [2024-11-19 08:56:08,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:08,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568009379] [2024-11-19 08:56:08,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:08,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:09,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:09,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568009379] [2024-11-19 08:56:09,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568009379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:09,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:09,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 08:56:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880444241] [2024-11-19 08:56:09,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:09,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 08:56:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:09,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 08:56:09,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 08:56:09,116 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) [2024-11-19 08:56:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:09,283 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2024-11-19 08:56:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 08:56:09,284 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 [2024-11-19 08:56:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:09,285 INFO L225 Difference]: With dead ends: 174 [2024-11-19 08:56:09,285 INFO L226 Difference]: Without dead ends: 174 [2024-11-19 08:56:09,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 08:56:09,286 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 13 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:09,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 414 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-19 08:56:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-11-19 08:56:09,288 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) [2024-11-19 08:56:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 189 transitions. [2024-11-19 08:56:09,289 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 189 transitions. Word has length 57 [2024-11-19 08:56:09,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:09,289 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 189 transitions. [2024-11-19 08:56:09,289 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) [2024-11-19 08:56:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 189 transitions. [2024-11-19 08:56:09,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 08:56:09,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:09,290 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] [2024-11-19 08:56:09,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 08:56:09,290 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)] === [2024-11-19 08:56:09,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2032404121, now seen corresponding path program 1 times [2024-11-19 08:56:09,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:09,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597269377] [2024-11-19 08:56:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:09,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:09,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597269377] [2024-11-19 08:56:09,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597269377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:09,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083906874] [2024-11-19 08:56:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:09,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:09,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:09,812 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) [2024-11-19 08:56:09,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 08:56:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:10,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 08:56:10,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:10,076 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 [2024-11-19 08:56:10,090 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 [2024-11-19 08:56:10,093 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 [2024-11-19 08:56:10,213 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 [2024-11-19 08:56:10,216 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 [2024-11-19 08:56:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:10,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:10,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083906874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:10,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:10,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-19 08:56:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129186352] [2024-11-19 08:56:10,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:10,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 08:56:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 08:56:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-19 08:56:10,404 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) [2024-11-19 08:56:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:10,864 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2024-11-19 08:56:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:10,864 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 [2024-11-19 08:56:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:10,865 INFO L225 Difference]: With dead ends: 185 [2024-11-19 08:56:10,865 INFO L226 Difference]: Without dead ends: 185 [2024-11-19 08:56:10,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-11-19 08:56:10,867 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 45 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:10,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 782 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 08:56:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-19 08:56:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-19 08:56:10,870 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) [2024-11-19 08:56:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 202 transitions. [2024-11-19 08:56:10,871 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 202 transitions. Word has length 62 [2024-11-19 08:56:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:10,871 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 202 transitions. [2024-11-19 08:56:10,871 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) [2024-11-19 08:56:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 202 transitions. [2024-11-19 08:56:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-19 08:56:10,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:10,872 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] [2024-11-19 08:56:10,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 08:56:11,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 08:56:11,073 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)] === [2024-11-19 08:56:11,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:11,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2031913739, now seen corresponding path program 1 times [2024-11-19 08:56:11,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:11,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568550922] [2024-11-19 08:56:11,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:11,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568550922] [2024-11-19 08:56:11,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568550922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569017443] [2024-11-19 08:56:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:11,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:11,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:11,266 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) [2024-11-19 08:56:11,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 08:56:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:11,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 08:56:11,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:11,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:11,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569017443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:11,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:11,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-19 08:56:11,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072524186] [2024-11-19 08:56:11,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:11,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 08:56:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:11,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 08:56:11,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:11,647 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) [2024-11-19 08:56:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:11,687 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2024-11-19 08:56:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 08:56:11,688 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 [2024-11-19 08:56:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:11,689 INFO L225 Difference]: With dead ends: 242 [2024-11-19 08:56:11,689 INFO L226 Difference]: Without dead ends: 242 [2024-11-19 08:56:11,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-19 08:56:11,690 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 20 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:11,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 656 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-19 08:56:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2024-11-19 08:56:11,692 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) [2024-11-19 08:56:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 257 transitions. [2024-11-19 08:56:11,693 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 257 transitions. Word has length 73 [2024-11-19 08:56:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:11,693 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 257 transitions. [2024-11-19 08:56:11,693 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) [2024-11-19 08:56:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 257 transitions. [2024-11-19 08:56:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-19 08:56:11,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:11,694 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] [2024-11-19 08:56:11,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 08:56:11,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:11,895 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)] === [2024-11-19 08:56:11,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1704710159, now seen corresponding path program 2 times [2024-11-19 08:56:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:11,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4072] [2024-11-19 08:56:11,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:11,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:11,972 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:11,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:12,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:12,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4072] [2024-11-19 08:56:12,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:12,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102365345] [2024-11-19 08:56:12,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:12,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:12,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:12,181 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) [2024-11-19 08:56:12,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 08:56:12,471 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:12,471 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:12,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 08:56:12,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:12,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:12,595 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-19 08:56:12,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102365345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:12,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:12,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-19 08:56:12,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043568177] [2024-11-19 08:56:12,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:12,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 08:56:12,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:12,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 08:56:12,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:12,596 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) [2024-11-19 08:56:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:12,632 INFO L93 Difference]: Finished difference Result 264 states and 279 transitions. [2024-11-19 08:56:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:12,632 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 [2024-11-19 08:56:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:12,633 INFO L225 Difference]: With dead ends: 264 [2024-11-19 08:56:12,633 INFO L226 Difference]: Without dead ends: 264 [2024-11-19 08:56:12,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 186 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:12,634 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 27 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:12,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 409 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-19 08:56:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2024-11-19 08:56:12,637 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) [2024-11-19 08:56:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 279 transitions. [2024-11-19 08:56:12,637 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 279 transitions. Word has length 98 [2024-11-19 08:56:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:12,638 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 279 transitions. [2024-11-19 08:56:12,638 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) [2024-11-19 08:56:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 279 transitions. [2024-11-19 08:56:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 08:56:12,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:12,639 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] [2024-11-19 08:56:12,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 08:56:12,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:12,840 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)] === [2024-11-19 08:56:12,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1582169487, now seen corresponding path program 3 times [2024-11-19 08:56:12,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:12,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032861144] [2024-11-19 08:56:12,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 08:56:12,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:12,961 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 08:56:12,961 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:13,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:13,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032861144] [2024-11-19 08:56:13,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032861144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:13,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123140354] [2024-11-19 08:56:13,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 08:56:13,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:13,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:13,327 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) [2024-11-19 08:56:13,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 08:56:13,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 08:56:13,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:13,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 08:56:13,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:13,666 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:13,667 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 19 treesize of output 18 [2024-11-19 08:56:13,685 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:13,685 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 [2024-11-19 08:56:13,711 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 [2024-11-19 08:56:13,774 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 [2024-11-19 08:56:14,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:14,125 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 [2024-11-19 08:56:14,131 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:14,131 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 [2024-11-19 08:56:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:14,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:15,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 08:56:15,133 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 54 treesize of output 72 [2024-11-19 08:56:15,266 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 66 treesize of output 62 [2024-11-19 08:56:15,282 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-19 08:56:15,283 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 46 treesize of output 59 [2024-11-19 08:56:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123140354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:15,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:15,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2024-11-19 08:56:15,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367121975] [2024-11-19 08:56:15,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:15,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 08:56:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 08:56:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2024-11-19 08:56:15,315 INFO L87 Difference]: Start difference. First operand 255 states and 279 transitions. Second operand has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 08:56:15,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:15,814 INFO L93 Difference]: Finished difference Result 253 states and 268 transitions. [2024-11-19 08:56:15,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:15,814 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2024-11-19 08:56:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:15,815 INFO L225 Difference]: With dead ends: 253 [2024-11-19 08:56:15,815 INFO L226 Difference]: Without dead ends: 253 [2024-11-19 08:56:15,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2024-11-19 08:56:15,816 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 387 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:15,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 741 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 08:56:15,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-19 08:56:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 196. [2024-11-19 08:56:15,818 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) [2024-11-19 08:56:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 210 transitions. [2024-11-19 08:56:15,819 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 210 transitions. Word has length 108 [2024-11-19 08:56:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:15,819 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 210 transitions. [2024-11-19 08:56:15,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 08:56:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 210 transitions. [2024-11-19 08:56:15,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-19 08:56:15,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:15,820 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] [2024-11-19 08:56:15,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 08:56:16,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:16,022 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)] === [2024-11-19 08:56:16,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1802614368, now seen corresponding path program 1 times [2024-11-19 08:56:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:16,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947914900] [2024-11-19 08:56:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:16,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:16,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:16,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947914900] [2024-11-19 08:56:16,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947914900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:16,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437691567] [2024-11-19 08:56:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:16,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:16,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:16,589 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) [2024-11-19 08:56:16,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 08:56:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:16,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 08:56:16,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:16,972 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:16,972 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 [2024-11-19 08:56:16,976 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 [2024-11-19 08:56:16,996 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 [2024-11-19 08:56:17,058 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 [2024-11-19 08:56:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-19 08:56:17,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:17,455 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 [2024-11-19 08:56:17,473 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-19 08:56:17,473 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 [2024-11-19 08:56:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:17,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437691567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:17,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:17,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 19 [2024-11-19 08:56:17,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371144622] [2024-11-19 08:56:17,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:17,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 08:56:17,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:17,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 08:56:17,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-19 08:56:17,500 INFO L87 Difference]: Start difference. First operand 196 states and 210 transitions. Second operand has 20 states, 19 states have (on average 4.368421052631579) internal successors, (83), 20 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) [2024-11-19 08:56:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:17,857 INFO L93 Difference]: Finished difference Result 258 states and 276 transitions. [2024-11-19 08:56:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 08:56:17,858 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.368421052631579) internal successors, (83), 20 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 [2024-11-19 08:56:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:17,859 INFO L225 Difference]: With dead ends: 258 [2024-11-19 08:56:17,859 INFO L226 Difference]: Without dead ends: 258 [2024-11-19 08:56:17,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2024-11-19 08:56:17,860 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 833 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:17,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 478 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-19 08:56:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 195. [2024-11-19 08:56:17,862 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) [2024-11-19 08:56:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2024-11-19 08:56:17,863 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 109 [2024-11-19 08:56:17,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:17,863 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2024-11-19 08:56:17,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.368421052631579) internal successors, (83), 20 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) [2024-11-19 08:56:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2024-11-19 08:56:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 08:56:17,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:17,864 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] [2024-11-19 08:56:17,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 08:56:18,068 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,SelfDestructingSolverStorable21 [2024-11-19 08:56:18,069 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)] === [2024-11-19 08:56:18,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1440091801, now seen corresponding path program 1 times [2024-11-19 08:56:18,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:18,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886830931] [2024-11-19 08:56:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:18,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:18,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:18,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886830931] [2024-11-19 08:56:18,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886830931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:18,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123366994] [2024-11-19 08:56:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:18,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:18,848 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) [2024-11-19 08:56:18,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 08:56:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:19,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 08:56:19,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:19,176 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 [2024-11-19 08:56:19,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 08:56:19,198 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 08:56:19,198 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 19 treesize of output 18 [2024-11-19 08:56:19,337 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-19 08:56:19,338 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 [2024-11-19 08:56:19,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-19 08:56:19,396 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 [2024-11-19 08:56:19,614 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 25 treesize of output 9 [2024-11-19 08:56:20,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:20,453 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:20,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 63 [2024-11-19 08:56:20,468 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:20,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2024-11-19 08:56:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-19 08:56:20,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:21,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 08:56:21,416 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 54 treesize of output 72 [2024-11-19 08:56:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:21,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123366994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:21,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:21,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 25 [2024-11-19 08:56:21,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041775836] [2024-11-19 08:56:21,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:21,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 08:56:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 08:56:21,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-11-19 08:56:21,649 INFO L87 Difference]: Start difference. First operand 195 states and 209 transitions. Second operand has 26 states, 25 states have (on average 3.56) internal successors, (89), 26 states have internal predecessors, (89), 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) [2024-11-19 08:56:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:22,339 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2024-11-19 08:56:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 08:56:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 26 states have internal predecessors, (89), 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 111 [2024-11-19 08:56:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:22,341 INFO L225 Difference]: With dead ends: 251 [2024-11-19 08:56:22,341 INFO L226 Difference]: Without dead ends: 251 [2024-11-19 08:56:22,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 08:56:22,341 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 571 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:22,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 680 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 08:56:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-19 08:56:22,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 190. [2024-11-19 08:56:22,344 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) [2024-11-19 08:56:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 204 transitions. [2024-11-19 08:56:22,344 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 204 transitions. Word has length 111 [2024-11-19 08:56:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:22,345 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 204 transitions. [2024-11-19 08:56:22,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 26 states have internal predecessors, (89), 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) [2024-11-19 08:56:22,345 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2024-11-19 08:56:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-19 08:56:22,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:22,345 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] [2024-11-19 08:56:22,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 08:56:22,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:22,546 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)] === [2024-11-19 08:56:22,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1084474507, now seen corresponding path program 1 times [2024-11-19 08:56:22,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:22,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383192516] [2024-11-19 08:56:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:22,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:22,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:22,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383192516] [2024-11-19 08:56:22,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383192516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:22,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:22,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 08:56:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022723864] [2024-11-19 08:56:22,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:22,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 08:56:22,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 08:56:22,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 08:56:22,730 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) [2024-11-19 08:56:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:22,767 INFO L93 Difference]: Finished difference Result 196 states and 211 transitions. [2024-11-19 08:56:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 08:56:22,767 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 [2024-11-19 08:56:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:22,768 INFO L225 Difference]: With dead ends: 196 [2024-11-19 08:56:22,768 INFO L226 Difference]: Without dead ends: 196 [2024-11-19 08:56:22,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 08:56:22,769 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 [2024-11-19 08:56:22,769 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] [2024-11-19 08:56:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-19 08:56:22,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-19 08:56:22,771 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) [2024-11-19 08:56:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 207 transitions. [2024-11-19 08:56:22,772 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 207 transitions. Word has length 114 [2024-11-19 08:56:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:22,772 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 207 transitions. [2024-11-19 08:56:22,772 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) [2024-11-19 08:56:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 207 transitions. [2024-11-19 08:56:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-19 08:56:22,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:22,773 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] [2024-11-19 08:56:22,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 08:56:22,773 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)] === [2024-11-19 08:56:22,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1755409201, now seen corresponding path program 1 times [2024-11-19 08:56:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:22,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5154186] [2024-11-19 08:56:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:23,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:23,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5154186] [2024-11-19 08:56:23,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5154186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:23,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850793827] [2024-11-19 08:56:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:23,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:23,971 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) [2024-11-19 08:56:23,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 08:56:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:24,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-19 08:56:24,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:24,321 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 [2024-11-19 08:56:24,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 08:56:24,374 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-19 08:56:24,374 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 [2024-11-19 08:56:24,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:24,378 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 [2024-11-19 08:56:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:24,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850793827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:25,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2024-11-19 08:56:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515217707] [2024-11-19 08:56:25,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:25,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 08:56:25,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 08:56:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-19 08:56:25,109 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) [2024-11-19 08:56:25,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:25,317 INFO L93 Difference]: Finished difference Result 280 states and 297 transitions. [2024-11-19 08:56:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 08:56:25,317 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 [2024-11-19 08:56:25,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:25,318 INFO L225 Difference]: With dead ends: 280 [2024-11-19 08:56:25,318 INFO L226 Difference]: Without dead ends: 280 [2024-11-19 08:56:25,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2024-11-19 08:56:25,318 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 246 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:25,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1249 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-19 08:56:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2024-11-19 08:56:25,322 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) [2024-11-19 08:56:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 274 transitions. [2024-11-19 08:56:25,322 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 274 transitions. Word has length 115 [2024-11-19 08:56:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:25,323 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 274 transitions. [2024-11-19 08:56:25,323 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) [2024-11-19 08:56:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 274 transitions. [2024-11-19 08:56:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-19 08:56:25,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:25,324 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] [2024-11-19 08:56:25,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 08:56:25,524 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,SelfDestructingSolverStorable24 [2024-11-19 08:56:25,524 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)] === [2024-11-19 08:56:25,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:25,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1569983125, now seen corresponding path program 1 times [2024-11-19 08:56:25,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:25,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039064029] [2024-11-19 08:56:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:25,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039064029] [2024-11-19 08:56:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039064029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:25,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:25,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 08:56:25,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630457111] [2024-11-19 08:56:25,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:25,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:25,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:25,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:25,693 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) [2024-11-19 08:56:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:25,699 INFO L93 Difference]: Finished difference Result 259 states and 275 transitions. [2024-11-19 08:56:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:25,700 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 [2024-11-19 08:56:25,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:25,700 INFO L225 Difference]: With dead ends: 259 [2024-11-19 08:56:25,700 INFO L226 Difference]: Without dead ends: 259 [2024-11-19 08:56:25,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:25,701 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 [2024-11-19 08:56:25,702 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] [2024-11-19 08:56:25,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-19 08:56:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-19 08:56:25,705 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) [2024-11-19 08:56:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 275 transitions. [2024-11-19 08:56:25,705 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 275 transitions. Word has length 119 [2024-11-19 08:56:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:25,706 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 275 transitions. [2024-11-19 08:56:25,706 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) [2024-11-19 08:56:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 275 transitions. [2024-11-19 08:56:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-19 08:56:25,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:25,706 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] [2024-11-19 08:56:25,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 08:56:25,707 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)] === [2024-11-19 08:56:25,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:25,707 INFO L85 PathProgramCache]: Analyzing trace with hash -797238300, now seen corresponding path program 1 times [2024-11-19 08:56:25,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424624847] [2024-11-19 08:56:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:25,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 75 proven. 3 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-19 08:56:26,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:26,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424624847] [2024-11-19 08:56:26,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424624847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021106248] [2024-11-19 08:56:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:26,462 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) [2024-11-19 08:56:26,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 08:56:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:26,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 08:56:26,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:26,882 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:26,882 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 [2024-11-19 08:56:26,978 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-19 08:56:26,978 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 [2024-11-19 08:56:26,995 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:26,995 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 [2024-11-19 08:56:27,043 INFO L349 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2024-11-19 08:56:27,043 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 [2024-11-19 08:56:27,081 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 [2024-11-19 08:56:27,203 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 [2024-11-19 08:56:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-19 08:56:27,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-19 08:56:27,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021106248] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:27,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 08:56:27,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 7] total 23 [2024-11-19 08:56:27,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706406256] [2024-11-19 08:56:27,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:27,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 08:56:27,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 08:56:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-19 08:56:27,598 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) [2024-11-19 08:56:27,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:27,649 INFO L93 Difference]: Finished difference Result 257 states and 273 transitions. [2024-11-19 08:56:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:27,650 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 [2024-11-19 08:56:27,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:27,651 INFO L225 Difference]: With dead ends: 257 [2024-11-19 08:56:27,651 INFO L226 Difference]: Without dead ends: 257 [2024-11-19 08:56:27,651 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-19 08:56:27,652 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 352 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:27,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 80 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-19 08:56:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2024-11-19 08:56:27,655 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) [2024-11-19 08:56:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 273 transitions. [2024-11-19 08:56:27,656 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 273 transitions. Word has length 120 [2024-11-19 08:56:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:27,656 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 273 transitions. [2024-11-19 08:56:27,656 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) [2024-11-19 08:56:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 273 transitions. [2024-11-19 08:56:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-19 08:56:27,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:27,657 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] [2024-11-19 08:56:27,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 08:56:27,861 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,SelfDestructingSolverStorable26 [2024-11-19 08:56:27,862 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)] === [2024-11-19 08:56:27,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:27,862 INFO L85 PathProgramCache]: Analyzing trace with hash -797238299, now seen corresponding path program 1 times [2024-11-19 08:56:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012577104] [2024-11-19 08:56:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012577104] [2024-11-19 08:56:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012577104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248109807] [2024-11-19 08:56:29,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:29,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:29,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:29,011 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) [2024-11-19 08:56:29,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 08:56:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:29,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-19 08:56:29,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:29,413 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:29,413 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 [2024-11-19 08:56:29,416 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 [2024-11-19 08:56:29,663 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-19 08:56:29,663 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 [2024-11-19 08:56:29,684 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:29,684 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 [2024-11-19 08:56:29,697 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:29,697 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 [2024-11-19 08:56:29,778 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:29,779 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 [2024-11-19 08:56:29,843 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 [2024-11-19 08:56:30,002 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 9 treesize of output 5 [2024-11-19 08:56:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-19 08:56:30,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248109807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:31,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 08:56:31,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2024-11-19 08:56:31,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487941060] [2024-11-19 08:56:31,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:31,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 08:56:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 08:56:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=852, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 08:56:31,290 INFO L87 Difference]: Start difference. First operand 257 states and 273 transitions. Second operand has 25 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 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) [2024-11-19 08:56:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:31,829 INFO L93 Difference]: Finished difference Result 320 states and 337 transitions. [2024-11-19 08:56:31,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 08:56:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 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 [2024-11-19 08:56:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:31,831 INFO L225 Difference]: With dead ends: 320 [2024-11-19 08:56:31,831 INFO L226 Difference]: Without dead ends: 320 [2024-11-19 08:56:31,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 08:56:31,832 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 1174 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:31,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 466 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-19 08:56:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 258. [2024-11-19 08:56:31,835 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) [2024-11-19 08:56:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 274 transitions. [2024-11-19 08:56:31,836 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 274 transitions. Word has length 120 [2024-11-19 08:56:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:31,836 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 274 transitions. [2024-11-19 08:56:31,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 24 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) [2024-11-19 08:56:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 274 transitions. [2024-11-19 08:56:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-19 08:56:31,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:31,837 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] [2024-11-19 08:56:31,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:32,037 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,SelfDestructingSolverStorable27 [2024-11-19 08:56:32,038 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)] === [2024-11-19 08:56:32,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:32,038 INFO L85 PathProgramCache]: Analyzing trace with hash 643168889, now seen corresponding path program 1 times [2024-11-19 08:56:32,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:32,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619892207] [2024-11-19 08:56:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:33,581 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:33,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619892207] [2024-11-19 08:56:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619892207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884556817] [2024-11-19 08:56:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:33,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:33,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:33,583 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) [2024-11-19 08:56:33,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 08:56:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:33,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-19 08:56:33,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:33,999 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:33,999 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 [2024-11-19 08:56:34,003 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 [2024-11-19 08:56:34,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:34,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:34,223 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 [2024-11-19 08:56:34,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:34,243 INFO L349 Elim1Store]: treesize reduction 38, result has 26.9 percent of original size [2024-11-19 08:56:34,243 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 25 treesize of output 33 [2024-11-19 08:56:34,386 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:34,387 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 [2024-11-19 08:56:34,408 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-19 08:56:34,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2024-11-19 08:56:34,441 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 15 treesize of output 1 [2024-11-19 08:56:34,572 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 17 treesize of output 9 [2024-11-19 08:56:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-19 08:56:35,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884556817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:39,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 08:56:39,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2024-11-19 08:56:39,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810673915] [2024-11-19 08:56:39,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:39,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 08:56:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:39,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 08:56:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1230, Unknown=1, NotChecked=0, Total=1482 [2024-11-19 08:56:39,926 INFO L87 Difference]: Start difference. First operand 258 states and 274 transitions. Second operand has 29 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 28 states have internal predecessors, (100), 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) [2024-11-19 08:56:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:40,720 INFO L93 Difference]: Finished difference Result 333 states and 353 transitions. [2024-11-19 08:56:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 08:56:40,721 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 28 states have internal predecessors, (100), 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 [2024-11-19 08:56:40,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:40,722 INFO L225 Difference]: With dead ends: 333 [2024-11-19 08:56:40,722 INFO L226 Difference]: Without dead ends: 333 [2024-11-19 08:56:40,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=589, Invalid=2062, Unknown=1, NotChecked=0, Total=2652 [2024-11-19 08:56:40,723 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 1223 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:40,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 497 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-19 08:56:40,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 264. [2024-11-19 08:56:40,726 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) [2024-11-19 08:56:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 280 transitions. [2024-11-19 08:56:40,726 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 280 transitions. Word has length 123 [2024-11-19 08:56:40,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:40,726 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 280 transitions. [2024-11-19 08:56:40,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 28 states have internal predecessors, (100), 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) [2024-11-19 08:56:40,726 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 280 transitions. [2024-11-19 08:56:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-19 08:56:40,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:40,727 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] [2024-11-19 08:56:40,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 08:56:40,927 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,SelfDestructingSolverStorable28 [2024-11-19 08:56:40,928 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)] === [2024-11-19 08:56:40,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:40,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1983922937, now seen corresponding path program 2 times [2024-11-19 08:56:40,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:40,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88803868] [2024-11-19 08:56:40,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:40,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:41,032 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:41,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-19 08:56:41,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:41,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88803868] [2024-11-19 08:56:41,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88803868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:41,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053786703] [2024-11-19 08:56:41,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:41,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:41,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:41,981 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) [2024-11-19 08:56:41,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 08:56:42,386 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:42,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:42,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 08:56:42,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:42,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:42,431 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 [2024-11-19 08:56:42,442 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:42,443 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 [2024-11-19 08:56:42,608 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:42,609 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 [2024-11-19 08:56:42,621 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:42,621 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 [2024-11-19 08:56:42,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:42,637 INFO L349 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2024-11-19 08:56:42,637 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 29 treesize of output 1 [2024-11-19 08:56:42,673 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:42,673 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 [2024-11-19 08:56:42,681 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 [2024-11-19 08:56:42,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-19 08:56:42,808 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 37 treesize of output 13 [2024-11-19 08:56:43,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 08:56:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-19 08:56:43,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:44,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053786703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:44,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 08:56:44,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2024-11-19 08:56:44,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610932329] [2024-11-19 08:56:44,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:44,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 08:56:44,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 08:56:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 08:56:44,392 INFO L87 Difference]: Start difference. First operand 264 states and 280 transitions. Second operand has 26 states, 24 states have (on average 4.75) internal successors, (114), 24 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) [2024-11-19 08:56:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:45,371 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2024-11-19 08:56:45,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 08:56:45,371 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.75) internal successors, (114), 24 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 [2024-11-19 08:56:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:45,372 INFO L225 Difference]: With dead ends: 268 [2024-11-19 08:56:45,372 INFO L226 Difference]: Without dead ends: 268 [2024-11-19 08:56:45,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=531, Invalid=1919, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 08:56:45,373 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 914 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:45,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 802 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 08:56:45,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-19 08:56:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2024-11-19 08:56:45,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 241 states have (on average 1.16597510373444) internal successors, (281), 264 states have internal predecessors, (281), 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) [2024-11-19 08:56:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 283 transitions. [2024-11-19 08:56:45,377 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 283 transitions. Word has length 129 [2024-11-19 08:56:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:45,377 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 283 transitions. [2024-11-19 08:56:45,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.75) internal successors, (114), 24 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) [2024-11-19 08:56:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 283 transitions. [2024-11-19 08:56:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-19 08:56:45,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:45,378 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 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] [2024-11-19 08:56:45,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:45,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:45,579 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)] === [2024-11-19 08:56:45,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash 3443429, now seen corresponding path program 3 times [2024-11-19 08:56:45,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:45,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178820763] [2024-11-19 08:56:45,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 08:56:45,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:45,653 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 08:56:45,653 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-19 08:56:46,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:46,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178820763] [2024-11-19 08:56:46,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178820763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:46,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056604272] [2024-11-19 08:56:46,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 08:56:46,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:46,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:46,178 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) [2024-11-19 08:56:46,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 08:56:46,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 08:56:46,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:46,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-19 08:56:46,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:46,580 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:46,581 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 [2024-11-19 08:56:46,583 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 [2024-11-19 08:56:46,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:46,765 INFO L349 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2024-11-19 08:56:46,766 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 [2024-11-19 08:56:46,768 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 [2024-11-19 08:56:46,813 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:46,813 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 [2024-11-19 08:56:46,826 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-19 08:56:46,826 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 [2024-11-19 08:56:46,849 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 [2024-11-19 08:56:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-19 08:56:47,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:47,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056604272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:47,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 08:56:47,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 21 [2024-11-19 08:56:47,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551155259] [2024-11-19 08:56:47,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:47,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 08:56:47,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:47,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 08:56:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2024-11-19 08:56:47,482 INFO L87 Difference]: Start difference. First operand 267 states and 283 transitions. Second operand has 22 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 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) [2024-11-19 08:56:47,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:47,923 INFO L93 Difference]: Finished difference Result 266 states and 282 transitions. [2024-11-19 08:56:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 08:56:47,924 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 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 132 [2024-11-19 08:56:47,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:47,925 INFO L225 Difference]: With dead ends: 266 [2024-11-19 08:56:47,925 INFO L226 Difference]: Without dead ends: 266 [2024-11-19 08:56:47,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=1047, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 08:56:47,925 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 630 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:47,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 603 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-19 08:56:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2024-11-19 08:56:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 240 states have (on average 1.1625) internal successors, (279), 262 states have internal predecessors, (279), 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) [2024-11-19 08:56:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 281 transitions. [2024-11-19 08:56:47,928 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 281 transitions. Word has length 132 [2024-11-19 08:56:47,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:47,929 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 281 transitions. [2024-11-19 08:56:47,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 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) [2024-11-19 08:56:47,929 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 281 transitions. [2024-11-19 08:56:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-19 08:56:47,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:47,930 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 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] [2024-11-19 08:56:47,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 08:56:48,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:48,130 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)] === [2024-11-19 08:56:48,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1759299476, now seen corresponding path program 1 times [2024-11-19 08:56:48,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:48,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045855626] [2024-11-19 08:56:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:48,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:48,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:48,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045855626] [2024-11-19 08:56:48,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045855626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:48,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621412035] [2024-11-19 08:56:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:48,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:48,307 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) [2024-11-19 08:56:48,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 08:56:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:48,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 08:56:48,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:48,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621412035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:48,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:48,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 08:56:48,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462008095] [2024-11-19 08:56:48,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:48,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 08:56:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 08:56:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:48,802 INFO L87 Difference]: Start difference. First operand 265 states and 281 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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) [2024-11-19 08:56:48,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:48,832 INFO L93 Difference]: Finished difference Result 283 states and 299 transitions. [2024-11-19 08:56:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:48,832 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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 136 [2024-11-19 08:56:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:48,833 INFO L225 Difference]: With dead ends: 283 [2024-11-19 08:56:48,833 INFO L226 Difference]: Without dead ends: 283 [2024-11-19 08:56:48,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 08:56:48,834 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 4 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:48,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 694 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:48,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-19 08:56:48,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-19 08:56:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 258 states have (on average 1.1511627906976745) internal successors, (297), 280 states have internal predecessors, (297), 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) [2024-11-19 08:56:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 299 transitions. [2024-11-19 08:56:48,840 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 299 transitions. Word has length 136 [2024-11-19 08:56:48,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:48,841 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 299 transitions. [2024-11-19 08:56:48,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 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) [2024-11-19 08:56:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 299 transitions. [2024-11-19 08:56:48,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-19 08:56:48,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:48,841 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1] [2024-11-19 08:56:48,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:49,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:49,042 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:56:49,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1161330196, now seen corresponding path program 2 times [2024-11-19 08:56:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:49,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412773868] [2024-11-19 08:56:49,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:49,120 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:49,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:49,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412773868] [2024-11-19 08:56:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412773868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:49,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624750244] [2024-11-19 08:56:49,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:49,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:49,400 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) [2024-11-19 08:56:49,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 08:56:49,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:49,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:49,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 1902 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 08:56:49,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:49,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:56:49,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624750244] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:49,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:49,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-19 08:56:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941423983] [2024-11-19 08:56:49,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:49,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 08:56:49,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 08:56:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 08:56:49,990 INFO L87 Difference]: Start difference. First operand 283 states and 299 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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) [2024-11-19 08:56:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:50,048 INFO L93 Difference]: Finished difference Result 319 states and 335 transitions. [2024-11-19 08:56:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 08:56:50,049 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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 154 [2024-11-19 08:56:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:50,049 INFO L225 Difference]: With dead ends: 319 [2024-11-19 08:56:50,049 INFO L226 Difference]: Without dead ends: 319 [2024-11-19 08:56:50,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 08:56:50,050 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 4 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:50,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 809 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 08:56:50,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-19 08:56:50,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2024-11-19 08:56:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 294 states have (on average 1.1326530612244898) internal successors, (333), 316 states have internal predecessors, (333), 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) [2024-11-19 08:56:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 335 transitions. [2024-11-19 08:56:50,054 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 335 transitions. Word has length 154 [2024-11-19 08:56:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:50,054 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 335 transitions. [2024-11-19 08:56:50,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 25 states have internal predecessors, (116), 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) [2024-11-19 08:56:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 335 transitions. [2024-11-19 08:56:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-19 08:56:50,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:50,055 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] [2024-11-19 08:56:50,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 08:56:50,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:50,256 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:56:50,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:50,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1186105665, now seen corresponding path program 2 times [2024-11-19 08:56:50,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:50,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698893821] [2024-11-19 08:56:50,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:50,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:50,402 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:56:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698893821] [2024-11-19 08:56:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698893821] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:51,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292743524] [2024-11-19 08:56:51,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 08:56:51,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:51,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:51,013 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:51,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 08:56:51,480 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 08:56:51,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:56:51,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 08:56:51,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:51,603 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 [2024-11-19 08:56:51,617 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 1 [2024-11-19 08:56:51,759 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 17 treesize of output 9 [2024-11-19 08:56:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:56:51,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:51,834 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 18 treesize of output 16 [2024-11-19 08:56:51,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-19 08:56:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:56:51,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292743524] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:51,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:51,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 15 [2024-11-19 08:56:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904364236] [2024-11-19 08:56:51,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:51,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 08:56:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 08:56:51,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-19 08:56:51,908 INFO L87 Difference]: Start difference. First operand 319 states and 335 transitions. Second operand has 16 states, 15 states have (on average 8.0) internal successors, (120), 16 states have internal predecessors, (120), 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) [2024-11-19 08:56:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:52,201 INFO L93 Difference]: Finished difference Result 535 states and 567 transitions. [2024-11-19 08:56:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 08:56:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.0) internal successors, (120), 16 states have internal predecessors, (120), 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 177 [2024-11-19 08:56:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:52,202 INFO L225 Difference]: With dead ends: 535 [2024-11-19 08:56:52,203 INFO L226 Difference]: Without dead ends: 535 [2024-11-19 08:56:52,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-19 08:56:52,203 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 270 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:52,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1056 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:56:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-19 08:56:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 389. [2024-11-19 08:56:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 364 states have (on average 1.1181318681318682) internal successors, (407), 386 states have internal predecessors, (407), 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) [2024-11-19 08:56:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 409 transitions. [2024-11-19 08:56:52,207 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 409 transitions. Word has length 177 [2024-11-19 08:56:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:52,208 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 409 transitions. [2024-11-19 08:56:52,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.0) internal successors, (120), 16 states have internal predecessors, (120), 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) [2024-11-19 08:56:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 409 transitions. [2024-11-19 08:56:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-19 08:56:52,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:52,209 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, 1] [2024-11-19 08:56:52,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 08:56:52,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:52,409 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:56:52,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:52,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1887615522, now seen corresponding path program 1 times [2024-11-19 08:56:52,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:52,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792518677] [2024-11-19 08:56:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:52,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2024-11-19 08:56:52,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:52,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792518677] [2024-11-19 08:56:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792518677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 08:56:52,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 08:56:52,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 08:56:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351785662] [2024-11-19 08:56:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 08:56:52,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 08:56:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 08:56:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:52,622 INFO L87 Difference]: Start difference. First operand 389 states and 409 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-19 08:56:52,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:52,626 INFO L93 Difference]: Finished difference Result 352 states and 364 transitions. [2024-11-19 08:56:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 08:56:52,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 178 [2024-11-19 08:56:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:52,627 INFO L225 Difference]: With dead ends: 352 [2024-11-19 08:56:52,627 INFO L226 Difference]: Without dead ends: 352 [2024-11-19 08:56:52,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 08:56:52,628 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:52,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-19 08:56:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-11-19 08:56:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 343 states have (on average 1.055393586005831) internal successors, (362), 349 states have internal predecessors, (362), 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) [2024-11-19 08:56:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 364 transitions. [2024-11-19 08:56:52,632 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 364 transitions. Word has length 178 [2024-11-19 08:56:52,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:52,632 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 364 transitions. [2024-11-19 08:56:52,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-19 08:56:52,632 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 364 transitions. [2024-11-19 08:56:52,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-19 08:56:52,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:52,633 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, 1] [2024-11-19 08:56:52,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-19 08:56:52,633 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:56:52,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:52,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1885429827, now seen corresponding path program 1 times [2024-11-19 08:56:52,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:52,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786525025] [2024-11-19 08:56:52,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:52,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:53,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:56:53,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:53,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786525025] [2024-11-19 08:56:53,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786525025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:53,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543607679] [2024-11-19 08:56:53,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:53,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:53,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:53,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:53,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 08:56:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:54,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-19 08:56:54,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:54,265 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 [2024-11-19 08:56:54,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 08:56:54,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 08:56:54,496 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 21 treesize of output 9 [2024-11-19 08:56:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2024-11-19 08:56:54,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:54,693 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 33 treesize of output 31 [2024-11-19 08:56:54,694 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 31 treesize of output 29 [2024-11-19 08:56:54,695 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 50 treesize of output 46 [2024-11-19 08:56:54,700 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 28 treesize of output 24 [2024-11-19 08:56:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:56:54,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543607679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:54,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:54,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 21 [2024-11-19 08:56:54,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40472138] [2024-11-19 08:56:54,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:54,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 08:56:54,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:54,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 08:56:54,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-19 08:56:54,758 INFO L87 Difference]: Start difference. First operand 352 states and 364 transitions. Second operand has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 22 states have internal predecessors, (139), 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) [2024-11-19 08:56:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:55,011 INFO L93 Difference]: Finished difference Result 460 states and 478 transitions. [2024-11-19 08:56:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 08:56:55,012 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 22 states have internal predecessors, (139), 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 178 [2024-11-19 08:56:55,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:55,013 INFO L225 Difference]: With dead ends: 460 [2024-11-19 08:56:55,013 INFO L226 Difference]: Without dead ends: 460 [2024-11-19 08:56:55,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-19 08:56:55,013 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 150 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:55,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 836 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:56:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-19 08:56:55,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 353. [2024-11-19 08:56:55,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 344 states have (on average 1.055232558139535) internal successors, (363), 350 states have internal predecessors, (363), 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) [2024-11-19 08:56:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 365 transitions. [2024-11-19 08:56:55,017 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 365 transitions. Word has length 178 [2024-11-19 08:56:55,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:55,017 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 365 transitions. [2024-11-19 08:56:55,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 22 states have internal predecessors, (139), 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) [2024-11-19 08:56:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 365 transitions. [2024-11-19 08:56:55,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-19 08:56:55,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:55,018 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, 1, 1] [2024-11-19 08:56:55,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 08:56:55,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:55,219 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:56:55,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1681217731, now seen corresponding path program 1 times [2024-11-19 08:56:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:55,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713197228] [2024-11-19 08:56:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:55,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:56,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 526 proven. 7 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-11-19 08:56:56,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713197228] [2024-11-19 08:56:56,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713197228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:56,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573604962] [2024-11-19 08:56:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:56,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:56,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:56,030 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:56,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 08:56:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:56,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 08:56:56,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:56,562 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:56,562 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 [2024-11-19 08:56:56,600 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-19 08:56:56,601 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 [2024-11-19 08:56:56,613 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 08:56:56,613 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 [2024-11-19 08:56:56,630 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-19 08:56:56,630 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 19 treesize of output 25 [2024-11-19 08:56:56,960 INFO L349 Elim1Store]: treesize reduction 36, result has 59.1 percent of original size [2024-11-19 08:56:56,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 66 [2024-11-19 08:56:57,031 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 [2024-11-19 08:56:57,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2024-11-19 08:56:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 39 proven. 49 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2024-11-19 08:56:57,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:56:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 38 proven. 533 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2024-11-19 08:56:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573604962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:56:57,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:56:57,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 11] total 23 [2024-11-19 08:56:57,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896528301] [2024-11-19 08:56:57,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:56:57,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 08:56:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:56:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 08:56:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-19 08:56:57,721 INFO L87 Difference]: Start difference. First operand 353 states and 365 transitions. Second operand has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 24 states have internal predecessors, (137), 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) [2024-11-19 08:56:57,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:56:57,759 INFO L93 Difference]: Finished difference Result 352 states and 364 transitions. [2024-11-19 08:56:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 08:56:57,759 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 24 states have internal predecessors, (137), 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 179 [2024-11-19 08:56:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:56:57,760 INFO L225 Difference]: With dead ends: 352 [2024-11-19 08:56:57,760 INFO L226 Difference]: Without dead ends: 352 [2024-11-19 08:56:57,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 343 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-11-19 08:56:57,761 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 188 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 08:56:57,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 55 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 08:56:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-19 08:56:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-11-19 08:56:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 344 states have (on average 1.052325581395349) internal successors, (362), 349 states have internal predecessors, (362), 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) [2024-11-19 08:56:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 364 transitions. [2024-11-19 08:56:57,765 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 364 transitions. Word has length 179 [2024-11-19 08:56:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:56:57,765 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 364 transitions. [2024-11-19 08:56:57,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 24 states have internal predecessors, (137), 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) [2024-11-19 08:56:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 364 transitions. [2024-11-19 08:56:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-19 08:56:57,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:56:57,766 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, 1, 1, 1] [2024-11-19 08:56:57,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 08:56:57,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-19 08:56:57,967 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:56:57,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:56:57,967 INFO L85 PathProgramCache]: Analyzing trace with hash 578142335, now seen corresponding path program 1 times [2024-11-19 08:56:57,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:56:57,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022324459] [2024-11-19 08:56:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:57,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:56:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:56:58,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:56:58,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022324459] [2024-11-19 08:56:58,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022324459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:56:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543504287] [2024-11-19 08:56:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:56:58,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:56:58,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:56:58,706 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:56:58,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 08:56:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:56:59,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-19 08:56:59,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:56:59,260 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 08:56:59,260 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 [2024-11-19 08:56:59,262 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 [2024-11-19 08:56:59,334 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:56:59,334 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 [2024-11-19 08:56:59,336 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 14 treesize of output 9 [2024-11-19 08:56:59,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:59,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:59,342 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 [2024-11-19 08:56:59,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:56:59,346 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 08:56:59,346 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2024-11-19 08:56:59,365 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-19 08:56:59,365 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 12 treesize of output 18 [2024-11-19 08:56:59,380 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 23 treesize of output 1 [2024-11-19 08:56:59,733 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2024-11-19 08:56:59,733 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 19 treesize of output 19 [2024-11-19 08:56:59,748 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-19 08:56:59,748 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 25 treesize of output 34 [2024-11-19 08:56:59,789 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-19 08:56:59,790 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 1 case distinctions, treesize of input 57 treesize of output 33 [2024-11-19 08:56:59,871 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 26 treesize of output 10 [2024-11-19 08:57:00,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 7 proven. 583 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2024-11-19 08:57:00,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:57:00,458 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 08:57:00,459 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 13 treesize of output 12 [2024-11-19 08:57:00,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543504287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:57:00,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 08:57:00,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2024-11-19 08:57:00,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793603163] [2024-11-19 08:57:00,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 08:57:00,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 08:57:00,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:57:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 08:57:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2024-11-19 08:57:00,540 INFO L87 Difference]: Start difference. First operand 352 states and 364 transitions. Second operand has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 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) [2024-11-19 08:57:00,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:57:00,925 INFO L93 Difference]: Finished difference Result 432 states and 444 transitions. [2024-11-19 08:57:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 08:57:00,925 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 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 180 [2024-11-19 08:57:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:57:00,927 INFO L225 Difference]: With dead ends: 432 [2024-11-19 08:57:00,927 INFO L226 Difference]: Without dead ends: 432 [2024-11-19 08:57:00,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 306 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 08:57:00,927 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 237 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:57:00,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 424 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:57:00,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-19 08:57:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 351. [2024-11-19 08:57:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 344 states have (on average 1.0494186046511629) internal successors, (361), 348 states have internal predecessors, (361), 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) [2024-11-19 08:57:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 363 transitions. [2024-11-19 08:57:00,931 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 363 transitions. Word has length 180 [2024-11-19 08:57:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:57:00,932 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 363 transitions. [2024-11-19 08:57:00,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 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) [2024-11-19 08:57:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 363 transitions. [2024-11-19 08:57:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-19 08:57:00,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:57:00,933 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:57:00,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 08:57:01,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-19 08:57:01,133 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:57:01,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:57:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1496107123, now seen corresponding path program 1 times [2024-11-19 08:57:01,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:57:01,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470938213] [2024-11-19 08:57:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:57:01,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:57:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:57:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:57:02,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:57:02,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470938213] [2024-11-19 08:57:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470938213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:57:02,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455460317] [2024-11-19 08:57:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:57:02,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:57:02,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:57:02,046 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:57:02,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 08:57:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:57:02,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-19 08:57:02,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:57:02,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:57:02,620 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 [2024-11-19 08:57:02,625 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:57:02,625 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 [2024-11-19 08:57:02,849 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 08:57:02,850 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 [2024-11-19 08:57:02,853 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 [2024-11-19 08:57:02,870 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 [2024-11-19 08:57:02,915 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 [2024-11-19 08:57:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 1 proven. 552 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2024-11-19 08:57:03,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:57:03,685 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 08:57:03,685 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 13 treesize of output 12 [2024-11-19 08:57:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 2 proven. 532 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:57:03,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455460317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:57:03,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:57:03,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 29 [2024-11-19 08:57:03,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871050476] [2024-11-19 08:57:03,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:57:03,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 08:57:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:57:03,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 08:57:03,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2024-11-19 08:57:03,774 INFO L87 Difference]: Start difference. First operand 351 states and 363 transitions. Second operand has 30 states, 29 states have (on average 6.0344827586206895) internal successors, (175), 30 states have internal predecessors, (175), 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) [2024-11-19 08:57:04,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:57:04,275 INFO L93 Difference]: Finished difference Result 440 states and 454 transitions. [2024-11-19 08:57:04,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 08:57:04,276 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 6.0344827586206895) internal successors, (175), 30 states have internal predecessors, (175), 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 185 [2024-11-19 08:57:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:57:04,277 INFO L225 Difference]: With dead ends: 440 [2024-11-19 08:57:04,277 INFO L226 Difference]: Without dead ends: 440 [2024-11-19 08:57:04,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=311, Invalid=1411, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 08:57:04,278 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 411 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 08:57:04,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 931 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 08:57:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-19 08:57:04,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 352. [2024-11-19 08:57:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 346 states have (on average 1.0491329479768785) internal successors, (363), 349 states have internal predecessors, (363), 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) [2024-11-19 08:57:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 365 transitions. [2024-11-19 08:57:04,281 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 365 transitions. Word has length 185 [2024-11-19 08:57:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:57:04,282 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 365 transitions. [2024-11-19 08:57:04,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 6.0344827586206895) internal successors, (175), 30 states have internal predecessors, (175), 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) [2024-11-19 08:57:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 365 transitions. [2024-11-19 08:57:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-19 08:57:04,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:57:04,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 08:57:04,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-19 08:57:04,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-19 08:57:04,483 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:57:04,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:57:04,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1055103982, now seen corresponding path program 1 times [2024-11-19 08:57:04,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:57:04,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861056572] [2024-11-19 08:57:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:57:04,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:57:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:57:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:57:06,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:57:06,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861056572] [2024-11-19 08:57:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861056572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:57:06,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725074670] [2024-11-19 08:57:06,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 08:57:06,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:57:06,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:57:06,279 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:57:06,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 08:57:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 08:57:06,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 08:57:06,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 08:57:06,847 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 [2024-11-19 08:57:06,849 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 [2024-11-19 08:57:06,885 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-19 08:57:06,885 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 19 [2024-11-19 08:57:06,910 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-19 08:57:06,911 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 19 [2024-11-19 08:57:07,356 INFO L349 Elim1Store]: treesize reduction 27, result has 28.9 percent of original size [2024-11-19 08:57:07,357 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 31 treesize of output 15 [2024-11-19 08:57:07,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 08:57:07,363 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 31 treesize of output 15 [2024-11-19 08:57:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:57:07,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 08:57:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-19 08:57:08,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725074670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 08:57:08,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 08:57:08,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 27 [2024-11-19 08:57:08,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266487508] [2024-11-19 08:57:08,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 08:57:08,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 08:57:08,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 08:57:08,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 08:57:08,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-19 08:57:08,502 INFO L87 Difference]: Start difference. First operand 352 states and 365 transitions. Second operand has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 27 states have internal predecessors, (156), 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) [2024-11-19 08:57:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 08:57:08,823 INFO L93 Difference]: Finished difference Result 533 states and 549 transitions. [2024-11-19 08:57:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 08:57:08,823 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 27 states have internal predecessors, (156), 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 187 [2024-11-19 08:57:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 08:57:08,824 INFO L225 Difference]: With dead ends: 533 [2024-11-19 08:57:08,824 INFO L226 Difference]: Without dead ends: 533 [2024-11-19 08:57:08,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=239, Invalid=1021, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 08:57:08,825 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 595 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 08:57:08,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1047 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 08:57:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-19 08:57:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 357. [2024-11-19 08:57:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 351 states have (on average 1.0512820512820513) internal successors, (369), 354 states have internal predecessors, (369), 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) [2024-11-19 08:57:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 371 transitions. [2024-11-19 08:57:08,828 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 371 transitions. Word has length 187 [2024-11-19 08:57:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 08:57:08,828 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 371 transitions. [2024-11-19 08:57:08,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 27 states have internal predecessors, (156), 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) [2024-11-19 08:57:08,829 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 371 transitions. [2024-11-19 08:57:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-19 08:57:08,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 08:57:08,829 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 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, 1, 1, 1, 1] [2024-11-19 08:57:08,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-19 08:57:09,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:57:09,030 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-19 08:57:09,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 08:57:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash 111545108, now seen corresponding path program 3 times [2024-11-19 08:57:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 08:57:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355143580] [2024-11-19 08:57:09,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 08:57:09,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 08:57:10,787 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-19 08:57:10,787 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 08:57:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-19 08:57:11,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 08:57:11,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355143580] [2024-11-19 08:57:11,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355143580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 08:57:11,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687208340] [2024-11-19 08:57:11,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 08:57:11,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 08:57:11,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 08:57:11,413 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 08:57:11,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process