./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 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:22:13,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:22:13,652 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-10 17:22:13,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:22:13,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:22:13,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:22:13,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:22:13,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:22:13,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:22:13,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:22:13,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:22:13,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:22:13,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:22:13,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:22:13,693 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:22:13,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:22:13,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:22:13,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:22:13,694 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:22:13,694 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:22:13,694 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:22:13,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:22:13,695 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:22:13,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:22:13,696 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:22:13,696 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:22:13,697 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:22:13,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:22:13,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:22:13,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:22:13,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:22:13,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:22:13,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:22:13,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:22:13,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:22:13,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:22:13,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:22:13,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:22:13,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:22:13,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deade1e5790a25ffe3efe3f50079c7cd07ab83afaa52029d4373e6401cf093c7 [2024-11-10 17:22:13,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:22:13,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:22:13,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:22:14,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:22:14,001 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:22:14,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2024-11-10 17:22:15,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:22:15,699 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:22:15,700 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2024-11-10 17:22:15,723 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84bbb289d/c560c70d67ee402abf21178ff42bceb7/FLAGa2e0c60a0 [2024-11-10 17:22:15,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84bbb289d/c560c70d67ee402abf21178ff42bceb7 [2024-11-10 17:22:15,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:22:16,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:22:16,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:22:16,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:22:16,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:22:16,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:22:15" (1/1) ... [2024-11-10 17:22:16,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411da4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:16, skipping insertion in model container [2024-11-10 17:22:16,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:22:15" (1/1) ... [2024-11-10 17:22:16,061 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:22:16,703 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:22:16,725 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:22:16,728 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:22:16,740 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:22:16,758 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 17:22:16,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:22:16,793 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:22:16,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:22:17,027 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:22:17,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17 WrapperNode [2024-11-10 17:22:17,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:22:17,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:22:17,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:22:17,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:22:17,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,124 INFO L138 Inliner]: procedures = 344, calls = 498, calls flagged for inlining = 8, calls inlined = 7, statements flattened = 658 [2024-11-10 17:22:17,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:22:17,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:22:17,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:22:17,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:22:17,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,196 INFO L175 MemorySlicer]: Split 450 memory accesses to 15 slices as follows [2, 2, 3, 6, 3, 3, 4, 4, 4, 4, 3, 44, 355, 2, 11]. 79 percent of accesses are in the largest equivalence class. The 423 initializations are split as follows [2, 0, 3, 0, 3, 3, 3, 3, 3, 3, 3, 42, 355, 0, 0]. The 9 writes are split as follows [0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2, 0, 1, 2]. [2024-11-10 17:22:17,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,246 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:22:17,279 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:22:17,279 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:22:17,279 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:22:17,280 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (1/1) ... [2024-11-10 17:22:17,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:22:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:17,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 17:22:17,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 17:22:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-10 17:22:17,374 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-10 17:22:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 17:22:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 17:22:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 17:22:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-10 17:22:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-10 17:22:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-10 17:22:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-10 17:22:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-10 17:22:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-10 17:22:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-10 17:22:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-10 17:22:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-10 17:22:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-10 17:22:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-10 17:22:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-10 17:22:17,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 17:22:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 17:22:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 17:22:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 17:22:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 17:22:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-10 17:22:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-10 17:22:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-10 17:22:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-10 17:22:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-10 17:22:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-10 17:22:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 17:22:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:22:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 17:22:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 17:22:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 17:22:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-10 17:22:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-10 17:22:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-10 17:22:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-10 17:22:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-10 17:22:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-10 17:22:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-10 17:22:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-10 17:22:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-10 17:22:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-10 17:22:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-10 17:22:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-10 17:22:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:22:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:22:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 17:22:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 17:22:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-10 17:22:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-10 17:22:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-10 17:22:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-10 17:22:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-10 17:22:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-10 17:22:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-10 17:22:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-10 17:22:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-10 17:22:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-10 17:22:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-10 17:22:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:22:17,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:22:17,673 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:22:17,677 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:22:18,307 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1231: havoc single_argv_#t~mem89#1.base, single_argv_#t~mem89#1.offset; [2024-11-10 17:22:18,341 INFO L? ?]: Removed 169 outVars from TransFormulas that were not future-live. [2024-11-10 17:22:18,341 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:22:18,362 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:22:18,363 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:22:18,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:22:18 BoogieIcfgContainer [2024-11-10 17:22:18,364 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:22:18,368 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:22:18,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:22:18,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:22:18,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:22:15" (1/3) ... [2024-11-10 17:22:18,373 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186ec78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:22:18, skipping insertion in model container [2024-11-10 17:22:18,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:22:17" (2/3) ... [2024-11-10 17:22:18,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@186ec78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:22:18, skipping insertion in model container [2024-11-10 17:22:18,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:22:18" (3/3) ... [2024-11-10 17:22:18,377 INFO L112 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2024-11-10 17:22:18,393 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:22:18,394 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 74 error locations. [2024-11-10 17:22:18,453 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:22:18,461 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;@6b99202b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:22:18,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2024-11-10 17:22:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 119 states have (on average 1.8319327731092436) internal successors, (218), 193 states have internal predecessors, (218), 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) [2024-11-10 17:22:18,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 17:22:18,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:18,473 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 17:22:18,474 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:18,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash 258147, now seen corresponding path program 1 times [2024-11-10 17:22:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:18,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906360805] [2024-11-10 17:22:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:19,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:19,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906360805] [2024-11-10 17:22:19,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906360805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:19,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:19,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:22:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163212208] [2024-11-10 17:22:19,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:19,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:22:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:19,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:22:19,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:22:19,152 INFO L87 Difference]: Start difference. First operand has 196 states, 119 states have (on average 1.8319327731092436) internal successors, (218), 193 states have internal predecessors, (218), 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) [2024-11-10 17:22:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:19,344 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2024-11-10 17:22:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:22:19,346 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 [2024-11-10 17:22:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:19,354 INFO L225 Difference]: With dead ends: 146 [2024-11-10 17:22:19,355 INFO L226 Difference]: Without dead ends: 146 [2024-11-10 17:22:19,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:22:19,359 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 149 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:19,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 104 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:22:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-10 17:22:19,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-11-10 17:22:19,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 89 states have (on average 1.7752808988764044) internal successors, (158), 143 states have internal predecessors, (158), 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) [2024-11-10 17:22:19,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 160 transitions. [2024-11-10 17:22:19,405 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 160 transitions. Word has length 3 [2024-11-10 17:22:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:19,406 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 160 transitions. [2024-11-10 17:22:19,406 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) [2024-11-10 17:22:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 160 transitions. [2024-11-10 17:22:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-10 17:22:19,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:19,409 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-10 17:22:19,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:22:19,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:19,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash 258148, now seen corresponding path program 1 times [2024-11-10 17:22:19,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:19,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945087109] [2024-11-10 17:22:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:19,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:19,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:19,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945087109] [2024-11-10 17:22:19,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945087109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:19,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:19,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:22:19,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526171291] [2024-11-10 17:22:19,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:19,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:22:19,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:19,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:22:19,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:22:19,795 INFO L87 Difference]: Start difference. First operand 146 states and 160 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) [2024-11-10 17:22:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:19,946 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2024-11-10 17:22:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:22:19,947 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 [2024-11-10 17:22:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:19,948 INFO L225 Difference]: With dead ends: 145 [2024-11-10 17:22:19,948 INFO L226 Difference]: Without dead ends: 145 [2024-11-10 17:22:19,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:22:19,950 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 8 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 246 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 [2024-11-10 17:22:19,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 246 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 17:22:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-10 17:22:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-10 17:22:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 89 states have (on average 1.7640449438202248) 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) [2024-11-10 17:22:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2024-11-10 17:22:19,970 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 3 [2024-11-10 17:22:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:19,970 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2024-11-10 17:22:19,971 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) [2024-11-10 17:22:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2024-11-10 17:22:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-10 17:22:19,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:19,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:19,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:22:19,972 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:19,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2107992132, now seen corresponding path program 1 times [2024-11-10 17:22:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61462874] [2024-11-10 17:22:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:20,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:20,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:20,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61462874] [2024-11-10 17:22:20,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61462874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:20,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:20,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:22:20,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229632572] [2024-11-10 17:22:20,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:20,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:22:20,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:22:20,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:22:20,269 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:22:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:20,449 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2024-11-10 17:22:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:22:20,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-10 17:22:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:20,451 INFO L225 Difference]: With dead ends: 149 [2024-11-10 17:22:20,451 INFO L226 Difference]: Without dead ends: 149 [2024-11-10 17:22:20,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:22:20,452 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:20,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 337 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:22:20,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-10 17:22:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2024-11-10 17:22:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 92 states have (on average 1.7391304347826086) internal successors, (160), 145 states have internal predecessors, (160), 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) [2024-11-10 17:22:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2024-11-10 17:22:20,469 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 7 [2024-11-10 17:22:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:20,470 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2024-11-10 17:22:20,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:22:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2024-11-10 17:22:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-10 17:22:20,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:20,471 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:20,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:22:20,471 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:20,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 534333278, now seen corresponding path program 1 times [2024-11-10 17:22:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:20,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419206628] [2024-11-10 17:22:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:20,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:20,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:20,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419206628] [2024-11-10 17:22:20,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419206628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:20,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804896870] [2024-11-10 17:22:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:20,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:20,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:20,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:20,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 17:22:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:21,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 17:22:21,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:21,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:21,382 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 [2024-11-10 17:22:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804896870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:21,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:21,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-10 17:22:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339435732] [2024-11-10 17:22:21,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:21,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 17:22:21,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 17:22:21,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-10 17:22:21,412 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:22:21,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:21,773 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2024-11-10 17:22:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 17:22:21,774 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-10 17:22:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:21,776 INFO L225 Difference]: With dead ends: 154 [2024-11-10 17:22:21,776 INFO L226 Difference]: Without dead ends: 154 [2024-11-10 17:22:21,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-11-10 17:22:21,778 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 160 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:21,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 715 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 17:22:21,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-10 17:22:21,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2024-11-10 17:22:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 99 states have (on average 1.6767676767676767) internal successors, (166), 151 states have internal predecessors, (166), 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) [2024-11-10 17:22:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 168 transitions. [2024-11-10 17:22:21,792 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 168 transitions. Word has length 11 [2024-11-10 17:22:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:21,792 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 168 transitions. [2024-11-10 17:22:21,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:22:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 168 transitions. [2024-11-10 17:22:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-10 17:22:21,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:21,794 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:21,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 17:22:21,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:21,998 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:21,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash 808488587, now seen corresponding path program 1 times [2024-11-10 17:22:21,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:21,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530943665] [2024-11-10 17:22:21,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:21,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:22,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-10 17:22:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:22,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:22,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530943665] [2024-11-10 17:22:22,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530943665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:22,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246310065] [2024-11-10 17:22:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:22,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:22,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:22,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:22,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 17:22:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:22,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 17:22:22,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:22,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:22,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246310065] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:22,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:22,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-10 17:22:22,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378503470] [2024-11-10 17:22:22,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:22,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 17:22:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 17:22:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-10 17:22:22,701 INFO L87 Difference]: Start difference. First operand 154 states and 168 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) [2024-11-10 17:22:22,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:22,752 INFO L93 Difference]: Finished difference Result 174 states and 188 transitions. [2024-11-10 17:22:22,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 17:22:22,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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 26 [2024-11-10 17:22:22,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:22,754 INFO L225 Difference]: With dead ends: 174 [2024-11-10 17:22:22,754 INFO L226 Difference]: Without dead ends: 174 [2024-11-10 17:22:22,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-10 17:22:22,755 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 4 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:22,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 464 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 17:22:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-10 17:22:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-10 17:22:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 119 states have (on average 1.5630252100840336) internal successors, (186), 171 states have internal predecessors, (186), 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) [2024-11-10 17:22:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 188 transitions. [2024-11-10 17:22:22,769 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 188 transitions. Word has length 26 [2024-11-10 17:22:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:22,770 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 188 transitions. [2024-11-10 17:22:22,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) [2024-11-10 17:22:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 188 transitions. [2024-11-10 17:22:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-10 17:22:22,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:22,771 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:22,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 17:22:22,972 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 [2024-11-10 17:22:22,973 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:22,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:22,973 INFO L85 PathProgramCache]: Analyzing trace with hash 480450081, now seen corresponding path program 2 times [2024-11-10 17:22:22,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:22,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218693252] [2024-11-10 17:22:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:23,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 17:22:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:23,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:23,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218693252] [2024-11-10 17:22:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218693252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268585494] [2024-11-10 17:22:23,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 17:22:23,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:23,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:23,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:23,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 17:22:23,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 17:22:23,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:22:23,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 17:22:23,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:23,704 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 17:22:23,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-10 17:22:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-10 17:22:23,724 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:22:23,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268585494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:23,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 17:22:23,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2024-11-10 17:22:23,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60634338] [2024-11-10 17:22:23,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:23,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:22:23,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:22:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-10 17:22:23,726 INFO L87 Difference]: Start difference. First operand 174 states and 188 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-11-10 17:22:23,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:23,851 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2024-11-10 17:22:23,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:22:23,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 [2024-11-10 17:22:23,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:23,853 INFO L225 Difference]: With dead ends: 169 [2024-11-10 17:22:23,857 INFO L226 Difference]: Without dead ends: 169 [2024-11-10 17:22:23,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-10 17:22:23,858 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 131 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 110 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 [2024-11-10 17:22:23,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 110 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 17:22:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-10 17:22:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-10 17:22:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 119 states have (on average 1.5210084033613445) internal successors, (181), 166 states have internal predecessors, (181), 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) [2024-11-10 17:22:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 183 transitions. [2024-11-10 17:22:23,865 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 183 transitions. Word has length 46 [2024-11-10 17:22:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:23,865 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 183 transitions. [2024-11-10 17:22:23,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2024-11-10 17:22:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 183 transitions. [2024-11-10 17:22:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-10 17:22:23,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:23,867 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:23,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 17:22:24,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:24,068 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:24,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:24,068 INFO L85 PathProgramCache]: Analyzing trace with hash 480450082, now seen corresponding path program 1 times [2024-11-10 17:22:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:24,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292455007] [2024-11-10 17:22:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:24,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-10 17:22:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:24,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292455007] [2024-11-10 17:22:24,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292455007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:24,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703217900] [2024-11-10 17:22:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:24,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:24,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:24,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:24,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 17:22:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:24,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 17:22:24,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:24,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:22:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703217900] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:24,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-10 17:22:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571626468] [2024-11-10 17:22:24,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:24,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 17:22:24,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 17:22:24,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:22:24,939 INFO L87 Difference]: Start difference. First operand 169 states and 183 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 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) [2024-11-10 17:22:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:24,998 INFO L93 Difference]: Finished difference Result 177 states and 191 transitions. [2024-11-10 17:22:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 17:22:24,998 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 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 46 [2024-11-10 17:22:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:24,999 INFO L225 Difference]: With dead ends: 177 [2024-11-10 17:22:24,999 INFO L226 Difference]: Without dead ends: 177 [2024-11-10 17:22:25,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:22:25,001 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 2 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:25,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 595 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 17:22:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-10 17:22:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-10 17:22:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 127 states have (on average 1.4881889763779528) internal successors, (189), 174 states have internal predecessors, (189), 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) [2024-11-10 17:22:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 191 transitions. [2024-11-10 17:22:25,015 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 191 transitions. Word has length 46 [2024-11-10 17:22:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:25,015 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 191 transitions. [2024-11-10 17:22:25,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 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) [2024-11-10 17:22:25,015 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 191 transitions. [2024-11-10 17:22:25,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-10 17:22:25,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:25,021 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:25,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 17:22:25,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:25,221 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:25,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash 459576158, now seen corresponding path program 2 times [2024-11-10 17:22:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:25,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33182974] [2024-11-10 17:22:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:25,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:25,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:25,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:25,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33182974] [2024-11-10 17:22:25,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33182974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:25,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:22:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904265579] [2024-11-10 17:22:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:25,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:22:25,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:25,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:22:25,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:25,933 INFO L87 Difference]: Start difference. First operand 177 states and 191 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-11-10 17:22:26,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:26,124 INFO L93 Difference]: Finished difference Result 272 states and 298 transitions. [2024-11-10 17:22:26,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:22:26,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 54 [2024-11-10 17:22:26,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:26,126 INFO L225 Difference]: With dead ends: 272 [2024-11-10 17:22:26,126 INFO L226 Difference]: Without dead ends: 272 [2024-11-10 17:22:26,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:26,127 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 353 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:26,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 414 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:22:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-10 17:22:26,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 176. [2024-11-10 17:22:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 173 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) [2024-11-10 17:22:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 190 transitions. [2024-11-10 17:22:26,132 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 190 transitions. Word has length 54 [2024-11-10 17:22:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:26,133 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 190 transitions. [2024-11-10 17:22:26,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2024-11-10 17:22:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 190 transitions. [2024-11-10 17:22:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-10 17:22:26,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:26,134 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:26,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:22:26,135 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:26,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash -430624394, now seen corresponding path program 1 times [2024-11-10 17:22:26,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:26,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819541566] [2024-11-10 17:22:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:26,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819541566] [2024-11-10 17:22:26,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819541566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:26,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:26,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:22:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932074040] [2024-11-10 17:22:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:26,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:22:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:26,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:22:26,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:26,543 INFO L87 Difference]: Start difference. First operand 176 states and 190 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-10 17:22:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:26,743 INFO L93 Difference]: Finished difference Result 198 states and 215 transitions. [2024-11-10 17:22:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:22:26,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 58 [2024-11-10 17:22:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:26,746 INFO L225 Difference]: With dead ends: 198 [2024-11-10 17:22:26,746 INFO L226 Difference]: Without dead ends: 198 [2024-11-10 17:22:26,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:26,748 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 172 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:26,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 167 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:22:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-10 17:22:26,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2024-11-10 17:22:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 143 states have (on average 1.4825174825174825) internal successors, (212), 189 states have internal predecessors, (212), 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) [2024-11-10 17:22:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2024-11-10 17:22:26,755 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 58 [2024-11-10 17:22:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:26,755 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2024-11-10 17:22:26,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-10 17:22:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2024-11-10 17:22:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-10 17:22:26,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:26,757 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:26,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 17:22:26,758 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:26,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash -464457041, now seen corresponding path program 1 times [2024-11-10 17:22:26,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:26,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410140084] [2024-11-10 17:22:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:26,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:26,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410140084] [2024-11-10 17:22:26,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410140084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:26,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:26,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:22:26,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084977173] [2024-11-10 17:22:26,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:26,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:22:26,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:26,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:22:26,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:22:26,988 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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) [2024-11-10 17:22:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:27,101 INFO L93 Difference]: Finished difference Result 186 states and 208 transitions. [2024-11-10 17:22:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:22:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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 59 [2024-11-10 17:22:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:27,103 INFO L225 Difference]: With dead ends: 186 [2024-11-10 17:22:27,103 INFO L226 Difference]: Without dead ends: 186 [2024-11-10 17:22:27,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:22:27,104 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 194 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 141 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 [2024-11-10 17:22:27,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 141 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 17:22:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-10 17:22:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2024-11-10 17:22:27,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 143 states have (on average 1.4405594405594406) internal successors, (206), 183 states have internal predecessors, (206), 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) [2024-11-10 17:22:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 208 transitions. [2024-11-10 17:22:27,110 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 208 transitions. Word has length 59 [2024-11-10 17:22:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:27,110 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 208 transitions. [2024-11-10 17:22:27,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 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) [2024-11-10 17:22:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 208 transitions. [2024-11-10 17:22:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-10 17:22:27,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:27,113 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:27,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 17:22:27,114 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:27,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:27,114 INFO L85 PathProgramCache]: Analyzing trace with hash -464457040, now seen corresponding path program 1 times [2024-11-10 17:22:27,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807326191] [2024-11-10 17:22:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:27,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:27,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:27,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807326191] [2024-11-10 17:22:27,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807326191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:22:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354706418] [2024-11-10 17:22:27,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:27,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:22:27,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:22:27,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:27,433 INFO L87 Difference]: Start difference. First operand 186 states and 208 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2024-11-10 17:22:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:27,493 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2024-11-10 17:22:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:22:27,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 59 [2024-11-10 17:22:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:27,495 INFO L225 Difference]: With dead ends: 192 [2024-11-10 17:22:27,495 INFO L226 Difference]: Without dead ends: 192 [2024-11-10 17:22:27,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:27,496 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 172 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:27,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 516 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 17:22:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-10 17:22:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 186. [2024-11-10 17:22:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 143 states have (on average 1.4335664335664335) internal successors, (205), 183 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) [2024-11-10 17:22:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 207 transitions. [2024-11-10 17:22:27,500 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 207 transitions. Word has length 59 [2024-11-10 17:22:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:27,501 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 207 transitions. [2024-11-10 17:22:27,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2024-11-10 17:22:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 207 transitions. [2024-11-10 17:22:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-10 17:22:27,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:27,502 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:27,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 17:22:27,502 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:27,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash 336128432, now seen corresponding path program 1 times [2024-11-10 17:22:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335513796] [2024-11-10 17:22:27,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:27,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:27,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:27,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335513796] [2024-11-10 17:22:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335513796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:27,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:27,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:22:27,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011676758] [2024-11-10 17:22:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:27,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:22:27,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:22:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:22:27,803 INFO L87 Difference]: Start difference. First operand 186 states and 207 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-10 17:22:27,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:27,876 INFO L93 Difference]: Finished difference Result 185 states and 205 transitions. [2024-11-10 17:22:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:22:27,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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 61 [2024-11-10 17:22:27,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:27,877 INFO L225 Difference]: With dead ends: 185 [2024-11-10 17:22:27,877 INFO L226 Difference]: Without dead ends: 185 [2024-11-10 17:22:27,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:22:27,878 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 121 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 114 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 [2024-11-10 17:22:27,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 114 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 17:22:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-10 17:22:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-10 17:22:27,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 143 states have (on average 1.4195804195804196) internal successors, (203), 182 states have internal predecessors, (203), 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) [2024-11-10 17:22:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 205 transitions. [2024-11-10 17:22:27,882 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 205 transitions. Word has length 61 [2024-11-10 17:22:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:27,883 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 205 transitions. [2024-11-10 17:22:27,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-11-10 17:22:27,883 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 205 transitions. [2024-11-10 17:22:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-10 17:22:27,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:27,884 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:22:27,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 17:22:27,884 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:27,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:27,884 INFO L85 PathProgramCache]: Analyzing trace with hash 336128433, now seen corresponding path program 1 times [2024-11-10 17:22:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:27,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697772018] [2024-11-10 17:22:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:27,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:28,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:28,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:28,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697772018] [2024-11-10 17:22:28,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697772018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:28,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:28,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 17:22:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730866440] [2024-11-10 17:22:28,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:28,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:22:28,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:28,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:22:28,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:22:28,609 INFO L87 Difference]: Start difference. First operand 185 states and 205 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-10 17:22:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:28,804 INFO L93 Difference]: Finished difference Result 190 states and 205 transitions. [2024-11-10 17:22:28,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 17:22:28,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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 61 [2024-11-10 17:22:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:28,805 INFO L225 Difference]: With dead ends: 190 [2024-11-10 17:22:28,805 INFO L226 Difference]: Without dead ends: 190 [2024-11-10 17:22:28,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:22:28,806 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 16 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:28,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:22:28,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-10 17:22:28,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 185. [2024-11-10 17:22:28,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 143 states have (on average 1.4125874125874125) internal successors, (202), 182 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) [2024-11-10 17:22:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 204 transitions. [2024-11-10 17:22:28,813 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 204 transitions. Word has length 61 [2024-11-10 17:22:28,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:28,813 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 204 transitions. [2024-11-10 17:22:28,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-11-10 17:22:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 204 transitions. [2024-11-10 17:22:28,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-10 17:22:28,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:28,814 INFO L215 NwaCegarLoop]: trace histogram [11, 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] [2024-11-10 17:22:28,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 17:22:28,815 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr58REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:28,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2033510510, now seen corresponding path program 1 times [2024-11-10 17:22:28,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:28,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138168768] [2024-11-10 17:22:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:29,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:29,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138168768] [2024-11-10 17:22:29,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138168768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:29,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:29,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:22:29,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571041741] [2024-11-10 17:22:29,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:29,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:22:29,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:22:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:22:29,186 INFO L87 Difference]: Start difference. First operand 185 states and 204 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-10 17:22:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:29,337 INFO L93 Difference]: Finished difference Result 184 states and 202 transitions. [2024-11-10 17:22:29,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:22:29,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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 64 [2024-11-10 17:22:29,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:29,339 INFO L225 Difference]: With dead ends: 184 [2024-11-10 17:22:29,339 INFO L226 Difference]: Without dead ends: 184 [2024-11-10 17:22:29,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:29,340 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 14 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 393 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 [2024-11-10 17:22:29,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 393 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 17:22:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-10 17:22:29,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-11-10 17:22:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 143 states have (on average 1.3986013986013985) internal successors, (200), 181 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) [2024-11-10 17:22:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 202 transitions. [2024-11-10 17:22:29,344 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 202 transitions. Word has length 64 [2024-11-10 17:22:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:29,344 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 202 transitions. [2024-11-10 17:22:29,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-10 17:22:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 202 transitions. [2024-11-10 17:22:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-10 17:22:29,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:29,345 INFO L215 NwaCegarLoop]: trace histogram [11, 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] [2024-11-10 17:22:29,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 17:22:29,346 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:29,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2033510511, now seen corresponding path program 1 times [2024-11-10 17:22:29,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:29,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106881925] [2024-11-10 17:22:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:29,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:29,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:29,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:29,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106881925] [2024-11-10 17:22:29,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106881925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:29,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:29,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:22:29,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87460256] [2024-11-10 17:22:29,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:29,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:22:29,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:29,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:22:29,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:22:29,906 INFO L87 Difference]: Start difference. First operand 184 states and 202 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-10 17:22:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:30,075 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2024-11-10 17:22:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:22:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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 64 [2024-11-10 17:22:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:30,076 INFO L225 Difference]: With dead ends: 183 [2024-11-10 17:22:30,076 INFO L226 Difference]: Without dead ends: 183 [2024-11-10 17:22:30,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:30,077 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 13 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 373 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 [2024-11-10 17:22:30,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 373 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 17:22:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-10 17:22:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-10 17:22:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 143 states have (on average 1.3846153846153846) internal successors, (198), 180 states have internal predecessors, (198), 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) [2024-11-10 17:22:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 200 transitions. [2024-11-10 17:22:30,083 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 200 transitions. Word has length 64 [2024-11-10 17:22:30,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:30,083 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 200 transitions. [2024-11-10 17:22:30,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 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) [2024-11-10 17:22:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 200 transitions. [2024-11-10 17:22:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-10 17:22:30,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:30,086 INFO L215 NwaCegarLoop]: trace histogram [11, 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] [2024-11-10 17:22:30,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 17:22:30,086 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:30,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash 843284549, now seen corresponding path program 1 times [2024-11-10 17:22:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:30,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916844741] [2024-11-10 17:22:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:30,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:30,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:30,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916844741] [2024-11-10 17:22:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916844741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:30,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:30,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:22:30,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936335381] [2024-11-10 17:22:30,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:30,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:22:30,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:30,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:22:30,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:22:30,452 INFO L87 Difference]: Start difference. First operand 183 states and 200 transitions. Second operand has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-10 17:22:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:30,590 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2024-11-10 17:22:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:22:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 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 70 [2024-11-10 17:22:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:30,592 INFO L225 Difference]: With dead ends: 182 [2024-11-10 17:22:30,592 INFO L226 Difference]: Without dead ends: 182 [2024-11-10 17:22:30,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:30,593 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 7 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:30,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 390 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 17:22:30,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-10 17:22:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-10 17:22:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 143 states have (on average 1.3706293706293706) internal successors, (196), 179 states have internal predecessors, (196), 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) [2024-11-10 17:22:30,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-11-10 17:22:30,598 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 70 [2024-11-10 17:22:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:30,598 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-11-10 17:22:30,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-11-10 17:22:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-11-10 17:22:30,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-10 17:22:30,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:30,599 INFO L215 NwaCegarLoop]: trace histogram [11, 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] [2024-11-10 17:22:30,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 17:22:30,600 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:30,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash 843284550, now seen corresponding path program 1 times [2024-11-10 17:22:30,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:30,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499177936] [2024-11-10 17:22:30,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:30,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:31,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:31,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:31,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499177936] [2024-11-10 17:22:31,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499177936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:31,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:31,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:22:31,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557004648] [2024-11-10 17:22:31,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:31,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:22:31,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:31,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:22:31,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:31,219 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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) [2024-11-10 17:22:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:31,442 INFO L93 Difference]: Finished difference Result 194 states and 211 transitions. [2024-11-10 17:22:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:22:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 70 [2024-11-10 17:22:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:31,445 INFO L225 Difference]: With dead ends: 194 [2024-11-10 17:22:31,445 INFO L226 Difference]: Without dead ends: 194 [2024-11-10 17:22:31,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:22:31,445 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 13 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:31,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 441 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:22:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-10 17:22:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2024-11-10 17:22:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 189 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) [2024-11-10 17:22:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 209 transitions. [2024-11-10 17:22:31,450 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 209 transitions. Word has length 70 [2024-11-10 17:22:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:31,450 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 209 transitions. [2024-11-10 17:22:31,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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) [2024-11-10 17:22:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 209 transitions. [2024-11-10 17:22:31,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-10 17:22:31,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:31,451 INFO L215 NwaCegarLoop]: trace histogram [11, 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, 1, 1, 1, 1] [2024-11-10 17:22:31,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 17:22:31,452 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:31,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1901694103, now seen corresponding path program 1 times [2024-11-10 17:22:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:31,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909758734] [2024-11-10 17:22:31,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:31,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:32,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:32,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:32,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909758734] [2024-11-10 17:22:32,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909758734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:32,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399567316] [2024-11-10 17:22:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:32,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:32,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:32,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:32,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 17:22:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:32,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-10 17:22:32,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:32,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 17:22:32,722 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 [2024-11-10 17:22:32,728 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 [2024-11-10 17:22:32,943 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 [2024-11-10 17:22:32,951 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 [2024-11-10 17:22:32,981 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:32,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:33,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399567316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:33,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:33,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-11-10 17:22:33,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259635386] [2024-11-10 17:22:33,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:33,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 17:22:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:33,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 17:22:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-10 17:22:33,270 INFO L87 Difference]: Start difference. First operand 192 states and 209 transitions. Second operand has 21 states, 20 states have (on average 3.85) internal successors, (77), 21 states have internal predecessors, (77), 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) [2024-11-10 17:22:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:33,702 INFO L93 Difference]: Finished difference Result 209 states and 226 transitions. [2024-11-10 17:22:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 17:22:33,703 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 21 states have internal predecessors, (77), 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 76 [2024-11-10 17:22:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:33,704 INFO L225 Difference]: With dead ends: 209 [2024-11-10 17:22:33,705 INFO L226 Difference]: Without dead ends: 209 [2024-11-10 17:22:33,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2024-11-10 17:22:33,705 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 61 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:33,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 684 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 17:22:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-10 17:22:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-10 17:22:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 171 states have (on average 1.3099415204678362) internal successors, (224), 206 states have internal predecessors, (224), 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) [2024-11-10 17:22:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 226 transitions. [2024-11-10 17:22:33,710 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 226 transitions. Word has length 76 [2024-11-10 17:22:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:33,710 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 226 transitions. [2024-11-10 17:22:33,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 21 states have internal predecessors, (77), 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) [2024-11-10 17:22:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 226 transitions. [2024-11-10 17:22:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-10 17:22:33,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:33,711 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 4, 3, 3, 3, 3, 3, 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] [2024-11-10 17:22:33,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 17:22:33,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-10 17:22:33,916 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:33,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1130949183, now seen corresponding path program 1 times [2024-11-10 17:22:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:33,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725005664] [2024-11-10 17:22:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:33,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:34,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725005664] [2024-11-10 17:22:34,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725005664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:34,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913516318] [2024-11-10 17:22:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:34,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:34,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:34,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:34,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 17:22:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:34,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 17:22:34,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:34,582 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:34,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913516318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:34,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:34,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-10 17:22:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268073817] [2024-11-10 17:22:34,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:34,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 17:22:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 17:22:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-10 17:22:34,681 INFO L87 Difference]: Start difference. First operand 209 states and 226 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 17:22:34,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:34,727 INFO L93 Difference]: Finished difference Result 276 states and 291 transitions. [2024-11-10 17:22:34,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 17:22:34,728 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2024-11-10 17:22:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:34,729 INFO L225 Difference]: With dead ends: 276 [2024-11-10 17:22:34,729 INFO L226 Difference]: Without dead ends: 276 [2024-11-10 17:22:34,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-10 17:22:34,730 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 22 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:34,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 687 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 17:22:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-10 17:22:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 269. [2024-11-10 17:22:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 231 states have (on average 1.251082251082251) internal successors, (289), 266 states have internal predecessors, (289), 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) [2024-11-10 17:22:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2024-11-10 17:22:34,738 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 89 [2024-11-10 17:22:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:34,739 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2024-11-10 17:22:34,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-10 17:22:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2024-11-10 17:22:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-10 17:22:34,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:34,741 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 8, 8, 8, 8, 8, 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] [2024-11-10 17:22:34,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 17:22:34,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:34,942 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:34,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1627421520, now seen corresponding path program 2 times [2024-11-10 17:22:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735279898] [2024-11-10 17:22:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:35,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 3 proven. 184 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735279898] [2024-11-10 17:22:35,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735279898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:35,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805045401] [2024-11-10 17:22:35,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 17:22:35,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:35,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:35,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:35,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 17:22:35,746 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 17:22:35,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:22:35,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 17:22:35,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 3 proven. 184 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:35,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 3 proven. 184 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-10 17:22:35,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805045401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:35,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:35,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-10 17:22:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105525137] [2024-11-10 17:22:35,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:35,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 17:22:35,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:35,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 17:22:35,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:22:35,995 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-10 17:22:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:36,052 INFO L93 Difference]: Finished difference Result 302 states and 317 transitions. [2024-11-10 17:22:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 17:22:36,052 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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 [2024-11-10 17:22:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:36,054 INFO L225 Difference]: With dead ends: 302 [2024-11-10 17:22:36,054 INFO L226 Difference]: Without dead ends: 302 [2024-11-10 17:22:36,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 230 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:22:36,054 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 24 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:36,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 699 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 17:22:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-10 17:22:36,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 293. [2024-11-10 17:22:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 255 states have (on average 1.2352941176470589) internal successors, (315), 290 states have internal predecessors, (315), 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) [2024-11-10 17:22:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 317 transitions. [2024-11-10 17:22:36,060 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 317 transitions. Word has length 119 [2024-11-10 17:22:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:36,061 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 317 transitions. [2024-11-10 17:22:36,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-10 17:22:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 317 transitions. [2024-11-10 17:22:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-10 17:22:36,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:36,062 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2024-11-10 17:22:36,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 17:22:36,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:36,263 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:36,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash 104049002, now seen corresponding path program 3 times [2024-11-10 17:22:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:36,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246965468] [2024-11-10 17:22:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:37,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:37,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:37,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246965468] [2024-11-10 17:22:37,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246965468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362133258] [2024-11-10 17:22:37,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 17:22:37,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:37,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:37,020 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:37,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 17:22:37,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 17:22:37,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:22:37,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 17:22:37,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:37,558 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 17:22:37,559 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 [2024-11-10 17:22:37,584 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 17:22:37,585 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 [2024-11-10 17:22:37,626 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 [2024-11-10 17:22:37,723 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 [2024-11-10 17:22:38,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:22:38,377 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 [2024-11-10 17:22:38,390 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 17:22:38,391 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 [2024-11-10 17:22:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:38,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:39,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 17:22:39,931 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 [2024-11-10 17:22:40,127 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 [2024-11-10 17:22:40,152 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-10 17:22:40,152 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 [2024-11-10 17:22:40,189 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:40,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362133258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:40,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:40,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 20 [2024-11-10 17:22:40,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749999974] [2024-11-10 17:22:40,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:40,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 17:22:40,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:40,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 17:22:40,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-11-10 17:22:40,192 INFO L87 Difference]: Start difference. First operand 293 states and 317 transitions. Second operand has 21 states, 20 states have (on average 4.25) internal successors, (85), 21 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) [2024-11-10 17:22:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:40,743 INFO L93 Difference]: Finished difference Result 292 states and 308 transitions. [2024-11-10 17:22:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 17:22:40,744 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.25) internal successors, (85), 21 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 131 [2024-11-10 17:22:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:40,745 INFO L225 Difference]: With dead ends: 292 [2024-11-10 17:22:40,745 INFO L226 Difference]: Without dead ends: 292 [2024-11-10 17:22:40,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2024-11-10 17:22:40,746 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 299 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:40,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 626 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 17:22:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-10 17:22:40,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 223. [2024-11-10 17:22:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 189 states have (on average 1.2433862433862435) internal successors, (235), 220 states have internal predecessors, (235), 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) [2024-11-10 17:22:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 237 transitions. [2024-11-10 17:22:40,751 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 237 transitions. Word has length 131 [2024-11-10 17:22:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:40,752 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 237 transitions. [2024-11-10 17:22:40,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.25) internal successors, (85), 21 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) [2024-11-10 17:22:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 237 transitions. [2024-11-10 17:22:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-10 17:22:40,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:40,753 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 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] [2024-11-10 17:22:40,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 17:22:40,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-10 17:22:40,958 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:40,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1069450948, now seen corresponding path program 1 times [2024-11-10 17:22:40,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:40,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179984810] [2024-11-10 17:22:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:40,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:41,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:41,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:41,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179984810] [2024-11-10 17:22:41,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179984810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087907239] [2024-11-10 17:22:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:41,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:41,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:41,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:41,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 17:22:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:42,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 17:22:42,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:42,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:22:42,293 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 16 treesize of output 11 [2024-11-10 17:22:42,298 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 17:22:42,298 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 [2024-11-10 17:22:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:42,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:42,937 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 [2024-11-10 17:22:42,961 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-10 17:22:42,962 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 [2024-11-10 17:22:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087907239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:43,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:43,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 18 [2024-11-10 17:22:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930944283] [2024-11-10 17:22:43,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:43,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 17:22:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 17:22:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-10 17:22:43,007 INFO L87 Difference]: Start difference. First operand 223 states and 237 transitions. Second operand has 19 states, 18 states have (on average 4.888888888888889) internal successors, (88), 19 states have internal predecessors, (88), 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) [2024-11-10 17:22:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:43,356 INFO L93 Difference]: Finished difference Result 295 states and 313 transitions. [2024-11-10 17:22:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 17:22:43,357 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.888888888888889) internal successors, (88), 19 states have internal predecessors, (88), 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 132 [2024-11-10 17:22:43,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:43,358 INFO L225 Difference]: With dead ends: 295 [2024-11-10 17:22:43,358 INFO L226 Difference]: Without dead ends: 295 [2024-11-10 17:22:43,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2024-11-10 17:22:43,359 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 829 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:43,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 393 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:22:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-10 17:22:43,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 222. [2024-11-10 17:22:43,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 192 states have (on average 1.21875) internal successors, (234), 219 states have internal predecessors, (234), 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) [2024-11-10 17:22:43,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 236 transitions. [2024-11-10 17:22:43,365 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 236 transitions. Word has length 132 [2024-11-10 17:22:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:43,365 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 236 transitions. [2024-11-10 17:22:43,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.888888888888889) internal successors, (88), 19 states have internal predecessors, (88), 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) [2024-11-10 17:22:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 236 transitions. [2024-11-10 17:22:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-10 17:22:43,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:43,367 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2024-11-10 17:22:43,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 17:22:43,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:43,567 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:43,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1242432195, now seen corresponding path program 1 times [2024-11-10 17:22:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:43,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913300227] [2024-11-10 17:22:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:45,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913300227] [2024-11-10 17:22:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913300227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030085945] [2024-11-10 17:22:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:45,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:45,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:45,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:45,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 17:22:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:45,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 17:22:45,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:45,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-10 17:22:45,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 17:22:45,588 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 17:22:45,589 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 [2024-11-10 17:22:45,758 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-10 17:22:45,758 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 [2024-11-10 17:22:45,768 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 [2024-11-10 17:22:45,853 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 [2024-11-10 17:22:46,777 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 [2024-11-10 17:22:47,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:22:47,603 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 17:22:47,603 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 [2024-11-10 17:22:47,622 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 17:22:47,622 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 [2024-11-10 17:22:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-10 17:22:47,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:48,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 17:22:48,960 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 [2024-11-10 17:22:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030085945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:49,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:49,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 7] total 26 [2024-11-10 17:22:49,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791397897] [2024-11-10 17:22:49,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:49,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 17:22:49,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 17:22:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-10 17:22:49,294 INFO L87 Difference]: Start difference. First operand 222 states and 236 transitions. Second operand has 27 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 27 states have internal predecessors, (101), 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) [2024-11-10 17:22:50,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:50,071 INFO L93 Difference]: Finished difference Result 288 states and 303 transitions. [2024-11-10 17:22:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 17:22:50,071 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 27 states have internal predecessors, (101), 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 134 [2024-11-10 17:22:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:50,072 INFO L225 Difference]: With dead ends: 288 [2024-11-10 17:22:50,073 INFO L226 Difference]: Without dead ends: 288 [2024-11-10 17:22:50,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=249, Invalid=941, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 17:22:50,073 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 411 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:50,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 606 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 17:22:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-10 17:22:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 217. [2024-11-10 17:22:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 188 states have (on average 1.2180851063829787) internal successors, (229), 214 states have internal predecessors, (229), 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) [2024-11-10 17:22:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 231 transitions. [2024-11-10 17:22:50,080 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 231 transitions. Word has length 134 [2024-11-10 17:22:50,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:50,081 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 231 transitions. [2024-11-10 17:22:50,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 27 states have internal predecessors, (101), 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) [2024-11-10 17:22:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 231 transitions. [2024-11-10 17:22:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-10 17:22:50,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:50,082 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 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] [2024-11-10 17:22:50,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 17:22:50,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-10 17:22:50,283 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:50,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash 654881640, now seen corresponding path program 1 times [2024-11-10 17:22:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:50,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413953645] [2024-11-10 17:22:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:50,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:50,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-10 17:22:50,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:50,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413953645] [2024-11-10 17:22:50,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413953645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:50,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:50,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:22:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304544461] [2024-11-10 17:22:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:50,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:22:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:22:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:22:50,573 INFO L87 Difference]: Start difference. First operand 217 states and 231 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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) [2024-11-10 17:22:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:50,625 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2024-11-10 17:22:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:22:50,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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 137 [2024-11-10 17:22:50,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:50,626 INFO L225 Difference]: With dead ends: 223 [2024-11-10 17:22:50,626 INFO L226 Difference]: Without dead ends: 223 [2024-11-10 17:22:50,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:22:50,627 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 5 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 478 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 [2024-11-10 17:22:50,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 478 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 17:22:50,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-10 17:22:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 220. [2024-11-10 17:22:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 191 states have (on average 1.2146596858638743) internal successors, (232), 217 states have internal predecessors, (232), 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) [2024-11-10 17:22:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 234 transitions. [2024-11-10 17:22:50,632 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 234 transitions. Word has length 137 [2024-11-10 17:22:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:50,632 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 234 transitions. [2024-11-10 17:22:50,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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) [2024-11-10 17:22:50,632 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 234 transitions. [2024-11-10 17:22:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-10 17:22:50,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:50,633 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 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] [2024-11-10 17:22:50,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-10 17:22:50,634 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:50,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -746760866, now seen corresponding path program 1 times [2024-11-10 17:22:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846985544] [2024-11-10 17:22:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:53,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846985544] [2024-11-10 17:22:53,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846985544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792675051] [2024-11-10 17:22:53,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:53,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:53,144 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:22:53,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 17:22:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:53,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-10 17:22:53,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:53,700 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 [2024-11-10 17:22:53,705 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 [2024-11-10 17:22:53,783 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-10 17:22:53,784 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 [2024-11-10 17:22:53,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:22:53,791 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 [2024-11-10 17:22:54,457 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:54,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:22:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792675051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:22:55,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:22:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2024-11-10 17:22:55,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79221762] [2024-11-10 17:22:55,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:22:55,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 17:22:55,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:55,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 17:22:55,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-10 17:22:55,110 INFO L87 Difference]: Start difference. First operand 220 states and 234 transitions. Second operand has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 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) [2024-11-10 17:22:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:55,398 INFO L93 Difference]: Finished difference Result 320 states and 337 transitions. [2024-11-10 17:22:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 17:22:55,399 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 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 139 [2024-11-10 17:22:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:55,400 INFO L225 Difference]: With dead ends: 320 [2024-11-10 17:22:55,400 INFO L226 Difference]: Without dead ends: 320 [2024-11-10 17:22:55,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2024-11-10 17:22:55,401 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 155 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 17:22:55,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1435 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 17:22:55,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-10 17:22:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 296. [2024-11-10 17:22:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 267 states have (on average 1.1610486891385767) internal successors, (310), 293 states have internal predecessors, (310), 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) [2024-11-10 17:22:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 312 transitions. [2024-11-10 17:22:55,407 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 312 transitions. Word has length 139 [2024-11-10 17:22:55,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:55,407 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 312 transitions. [2024-11-10 17:22:55,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2272727272727275) internal successors, (93), 22 states have internal predecessors, (93), 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) [2024-11-10 17:22:55,407 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 312 transitions. [2024-11-10 17:22:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-10 17:22:55,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:55,409 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 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] [2024-11-10 17:22:55,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 17:22:55,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 17:22:55,609 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:55,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:55,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1370943359, now seen corresponding path program 1 times [2024-11-10 17:22:55,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:55,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616732004] [2024-11-10 17:22:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:55,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:55,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-10 17:22:55,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:55,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616732004] [2024-11-10 17:22:55,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616732004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:22:55,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:22:55,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:22:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317780414] [2024-11-10 17:22:55,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:22:55,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:22:55,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:22:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:22:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:22:55,853 INFO L87 Difference]: Start difference. First operand 296 states and 312 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-10 17:22:55,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:22:55,863 INFO L93 Difference]: Finished difference Result 297 states and 313 transitions. [2024-11-10 17:22:55,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:22:55,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 143 [2024-11-10 17:22:55,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:22:55,865 INFO L225 Difference]: With dead ends: 297 [2024-11-10 17:22:55,865 INFO L226 Difference]: Without dead ends: 297 [2024-11-10 17:22:55,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:22:55,866 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 256 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 [2024-11-10 17:22:55,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 256 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 17:22:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-10 17:22:55,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-11-10 17:22:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 268 states have (on average 1.1604477611940298) internal successors, (311), 294 states have internal predecessors, (311), 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) [2024-11-10 17:22:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 313 transitions. [2024-11-10 17:22:55,872 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 313 transitions. Word has length 143 [2024-11-10 17:22:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:22:55,873 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 313 transitions. [2024-11-10 17:22:55,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-10 17:22:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 313 transitions. [2024-11-10 17:22:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-10 17:22:55,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:22:55,874 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 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] [2024-11-10 17:22:55,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-10 17:22:55,874 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:22:55,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:22:55,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1401589984, now seen corresponding path program 1 times [2024-11-10 17:22:55,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:22:55,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168391397] [2024-11-10 17:22:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:55,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:22:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:58,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:22:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:22:58,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:22:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168391397] [2024-11-10 17:22:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168391397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:22:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986614798] [2024-11-10 17:22:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:22:58,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:22:58,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:22:58,011 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) [2024-11-10 17:22:58,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 17:22:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:22:58,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-10 17:22:58,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:22:58,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:22:58,581 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 [2024-11-10 17:22:58,593 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-10 17:22:58,593 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 [2024-11-10 17:22:59,032 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 17:22:59,033 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 [2024-11-10 17:22:59,066 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-10 17:22:59,066 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 [2024-11-10 17:22:59,107 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-10 17:22:59,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-10 17:22:59,141 INFO L349 Elim1Store]: treesize reduction 36, result has 21.7 percent of original size [2024-11-10 17:22:59,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 21 [2024-11-10 17:22:59,361 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 17:22:59,361 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 [2024-11-10 17:22:59,430 INFO L349 Elim1Store]: treesize reduction 76, result has 26.9 percent of original size [2024-11-10 17:22:59,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 29 treesize of output 40 [2024-11-10 17:22:59,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 [2024-11-10 17:23:00,984 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 33 treesize of output 17 [2024-11-10 17:23:01,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2024-11-10 17:23:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 78 proven. 99 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-10 17:23:01,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:23:02,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986614798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:23:02,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:23:02,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18] total 27 [2024-11-10 17:23:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112574269] [2024-11-10 17:23:02,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:23:02,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 17:23:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:23:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 17:23:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1338, Unknown=0, NotChecked=0, Total=1722 [2024-11-10 17:23:02,677 INFO L87 Difference]: Start difference. First operand 297 states and 313 transitions. Second operand has 28 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 17:23:03,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:23:03,888 INFO L93 Difference]: Finished difference Result 369 states and 386 transitions. [2024-11-10 17:23:03,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 17:23:03,889 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 144 [2024-11-10 17:23:03,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:23:03,890 INFO L225 Difference]: With dead ends: 369 [2024-11-10 17:23:03,890 INFO L226 Difference]: Without dead ends: 369 [2024-11-10 17:23:03,892 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=834, Invalid=2246, Unknown=0, NotChecked=0, Total=3080 [2024-11-10 17:23:03,892 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 1389 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 17:23:03,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 760 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 17:23:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-10 17:23:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 297. [2024-11-10 17:23:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 271 states have (on average 1.1476014760147601) internal successors, (311), 294 states have internal predecessors, (311), 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) [2024-11-10 17:23:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 313 transitions. [2024-11-10 17:23:03,898 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 313 transitions. Word has length 144 [2024-11-10 17:23:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:23:03,899 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 313 transitions. [2024-11-10 17:23:03,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-10 17:23:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 313 transitions. [2024-11-10 17:23:03,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-10 17:23:03,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:23:03,901 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:23:03,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 17:23:04,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-10 17:23:04,101 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:23:04,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:23:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2014820354, now seen corresponding path program 1 times [2024-11-10 17:23:04,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:23:04,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949690194] [2024-11-10 17:23:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:23:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:23:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:23:06,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:23:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:23:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:23:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:23:06,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949690194] [2024-11-10 17:23:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949690194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:23:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015760846] [2024-11-10 17:23:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:23:06,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:23:06,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:23:06,107 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:23:06,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 17:23:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:23:06,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-10 17:23:06,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:23:06,695 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-10 17:23:06,696 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 [2024-11-10 17:23:06,700 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 [2024-11-10 17:23:07,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:23:07,108 INFO L349 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2024-11-10 17:23:07,108 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 [2024-11-10 17:23:07,117 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 [2024-11-10 17:23:07,228 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 17:23:07,228 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 [2024-11-10 17:23:07,254 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-10 17:23:07,254 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 [2024-11-10 17:23:07,296 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 [2024-11-10 17:23:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-11-10 17:23:08,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:23:09,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015760846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:23:09,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:23:09,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2024-11-10 17:23:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444022214] [2024-11-10 17:23:09,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:23:09,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-10 17:23:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:23:09,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-10 17:23:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2024-11-10 17:23:09,148 INFO L87 Difference]: Start difference. First operand 297 states and 313 transitions. Second operand has 27 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2024-11-10 17:23:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:23:10,059 INFO L93 Difference]: Finished difference Result 377 states and 394 transitions. [2024-11-10 17:23:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 17:23:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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 148 [2024-11-10 17:23:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:23:10,061 INFO L225 Difference]: With dead ends: 377 [2024-11-10 17:23:10,061 INFO L226 Difference]: Without dead ends: 377 [2024-11-10 17:23:10,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=573, Invalid=1779, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 17:23:10,063 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 835 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 17:23:10,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 815 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 17:23:10,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-10 17:23:10,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 305. [2024-11-10 17:23:10,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 279 states have (on average 1.1433691756272402) internal successors, (319), 302 states have internal predecessors, (319), 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) [2024-11-10 17:23:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 321 transitions. [2024-11-10 17:23:10,068 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 321 transitions. Word has length 148 [2024-11-10 17:23:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:23:10,069 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 321 transitions. [2024-11-10 17:23:10,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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) [2024-11-10 17:23:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 321 transitions. [2024-11-10 17:23:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-10 17:23:10,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:23:10,070 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:23:10,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 17:23:10,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-10 17:23:10,271 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:23:10,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:23:10,271 INFO L85 PathProgramCache]: Analyzing trace with hash 455435078, now seen corresponding path program 2 times [2024-11-10 17:23:10,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:23:10,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160875370] [2024-11-10 17:23:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:23:10,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:23:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:23:12,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:23:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:23:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:23:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:23:12,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160875370] [2024-11-10 17:23:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160875370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:23:12,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544507082] [2024-11-10 17:23:12,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 17:23:12,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:23:12,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:23:12,493 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:23:12,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 17:23:13,009 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 17:23:13,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 17:23:13,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 1759 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-10 17:23:13,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:23:13,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:23:13,051 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 [2024-11-10 17:23:13,062 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-10 17:23:13,063 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 [2024-11-10 17:23:13,322 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 17:23:13,322 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 [2024-11-10 17:23:13,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:23:13,330 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 [2024-11-10 17:23:13,347 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 17:23:13,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2024-11-10 17:23:13,452 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-10 17:23:13,452 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 [2024-11-10 17:23:13,502 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 [2024-11-10 17:23:13,749 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 60 treesize of output 44 [2024-11-10 17:23:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:23:15,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:23:16,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544507082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:23:16,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 17:23:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 27 [2024-11-10 17:23:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544107379] [2024-11-10 17:23:16,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 17:23:16,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 17:23:16,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:23:16,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 17:23:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332 [2024-11-10 17:23:16,622 INFO L87 Difference]: Start difference. First operand 305 states and 321 transitions. Second operand has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 28 states have internal predecessors, (124), 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) [2024-11-10 17:23:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 17:23:18,719 INFO L93 Difference]: Finished difference Result 322 states and 338 transitions. [2024-11-10 17:23:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-10 17:23:18,720 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 28 states have internal predecessors, (124), 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 156 [2024-11-10 17:23:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 17:23:18,721 INFO L225 Difference]: With dead ends: 322 [2024-11-10 17:23:18,721 INFO L226 Difference]: Without dead ends: 322 [2024-11-10 17:23:18,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=670, Invalid=2300, Unknown=0, NotChecked=0, Total=2970 [2024-11-10 17:23:18,722 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 1291 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-10 17:23:18,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 889 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-10 17:23:18,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-10 17:23:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 321. [2024-11-10 17:23:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 295 states have (on average 1.1355932203389831) internal successors, (335), 318 states have internal predecessors, (335), 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) [2024-11-10 17:23:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 337 transitions. [2024-11-10 17:23:18,728 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 337 transitions. Word has length 156 [2024-11-10 17:23:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 17:23:18,728 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 337 transitions. [2024-11-10 17:23:18,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 28 states have internal predecessors, (124), 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) [2024-11-10 17:23:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 337 transitions. [2024-11-10 17:23:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-10 17:23:18,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 17:23:18,729 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 7, 7, 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] [2024-11-10 17:23:18,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 17:23:18,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:23:18,930 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 71 more)] === [2024-11-10 17:23:18,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:23:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1190931918, now seen corresponding path program 3 times [2024-11-10 17:23:18,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:23:18,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235797774] [2024-11-10 17:23:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:23:18,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:23:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:23:21,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-10 17:23:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:23:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-10 17:23:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:23:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235797774] [2024-11-10 17:23:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235797774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:23:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823455525] [2024-11-10 17:23:21,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 17:23:21,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:23:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:23:21,220 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:23:21,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process