./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0234-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0234-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:20:07,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:20:07,628 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:20:07,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:20:07,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:20:07,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:20:07,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:20:07,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:20:07,667 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:20:07,668 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:20:07,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:20:07,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:20:07,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:20:07,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:20:07,668 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:20:07,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:20:07,669 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:20:07,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:20:07,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:20:07,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:20:07,669 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:20:07,669 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:20:07,669 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:20:07,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:20:07,670 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:20:07,670 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:20:07,670 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:20:07,670 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:20:07,670 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:20:07,670 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:20:07,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:20:07,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:20:07,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:20:07,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:20:07,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:20:07,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:20:07,671 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:20:07,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:20:07,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:20:07,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:20:07,672 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:20:07,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:20:07,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:20:07,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:20:07,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:20:07,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:20:07,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:20:07,673 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3248e88e6fd49fdcf0a9f78f1aa9e69276951d353f75f39f6bb30d51b2e53989 [2025-01-09 22:20:07,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:20:07,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:20:07,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:20:07,988 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:20:07,989 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:20:07,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0234-2.i [2025-01-09 22:20:09,368 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b83a429d1/49790b75c7e643af927c2897d99a3859/FLAGacd99578b [2025-01-09 22:20:09,719 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:20:09,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/test-0234-2.i [2025-01-09 22:20:09,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b83a429d1/49790b75c7e643af927c2897d99a3859/FLAGacd99578b [2025-01-09 22:20:09,764 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b83a429d1/49790b75c7e643af927c2897d99a3859 [2025-01-09 22:20:09,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:20:09,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:20:09,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:20:09,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:20:09,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:20:09,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:20:09" (1/1) ... [2025-01-09 22:20:09,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c29319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:09, skipping insertion in model container [2025-01-09 22:20:09,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:20:09" (1/1) ... [2025-01-09 22:20:09,817 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:20:10,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:20:10,148 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:20:10,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:20:10,266 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:20:10,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10 WrapperNode [2025-01-09 22:20:10,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:20:10,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:20:10,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:20:10,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:20:10,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,328 INFO L138 Inliner]: procedures = 188, calls = 58, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 197 [2025-01-09 22:20:10,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:20:10,329 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:20:10,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:20:10,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:20:10,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,391 INFO L175 MemorySlicer]: Split 31 memory accesses to 3 slices as follows [2, 4, 25]. 81 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2025-01-09 22:20:10,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,405 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,406 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,411 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:20:10,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:20:10,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:20:10,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:20:10,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (1/1) ... [2025-01-09 22:20:10,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:20:10,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:20:10,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 22:20:10,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-01-09 22:20:10,471 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-01-09 22:20:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 22:20:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 22:20:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 22:20:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:20:10,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:20:10,590 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:20:10,592 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:20:11,074 INFO L? ?]: Removed 190 outVars from TransFormulas that were not future-live. [2025-01-09 22:20:11,074 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:20:11,092 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:20:11,095 INFO L312 CfgBuilder]: Removed 10 assume(true) statements. [2025-01-09 22:20:11,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:20:11 BoogieIcfgContainer [2025-01-09 22:20:11,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:20:11,098 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:20:11,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:20:11,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:20:11,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:20:09" (1/3) ... [2025-01-09 22:20:11,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0a2bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:20:11, skipping insertion in model container [2025-01-09 22:20:11,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:10" (2/3) ... [2025-01-09 22:20:11,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0a2bd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:20:11, skipping insertion in model container [2025-01-09 22:20:11,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:20:11" (3/3) ... [2025-01-09 22:20:11,107 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0234-2.i [2025-01-09 22:20:11,122 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:20:11,124 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0234-2.i that has 2 procedures, 177 locations, 1 initial locations, 11 loop locations, and 70 error locations. [2025-01-09 22:20:11,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:20:11,184 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;@4d719fd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:20:11,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 70 error locations. [2025-01-09 22:20:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 99 states have (on average 1.9292929292929293) internal successors, (191), 169 states have internal predecessors, (191), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-01-09 22:20:11,197 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:11,197 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-01-09 22:20:11,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:11,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:11,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1545638, now seen corresponding path program 1 times [2025-01-09 22:20:11,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:11,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411370697] [2025-01-09 22:20:11,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:11,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:11,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-09 22:20:11,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-09 22:20:11,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:11,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:20:11,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:11,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411370697] [2025-01-09 22:20:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411370697] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:20:11,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:20:11,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 22:20:11,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520207750] [2025-01-09 22:20:11,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:20:11,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 22:20:11,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:11,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 22:20:11,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 22:20:11,367 INFO L87 Difference]: Start difference. First operand has 177 states, 99 states have (on average 1.9292929292929293) internal successors, (191), 169 states have internal predecessors, (191), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-01-09 22:20:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:20:11,385 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2025-01-09 22:20:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 22:20:11,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2025-01-09 22:20:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:20:11,393 INFO L225 Difference]: With dead ends: 177 [2025-01-09 22:20:11,393 INFO L226 Difference]: Without dead ends: 175 [2025-01-09 22:20:11,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 22:20:11,399 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:20:11,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:20:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-01-09 22:20:11,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-01-09 22:20:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 98 states have (on average 1.816326530612245) internal successors, (178), 167 states have internal predecessors, (178), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 190 transitions. [2025-01-09 22:20:11,451 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 190 transitions. Word has length 4 [2025-01-09 22:20:11,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:20:11,451 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 190 transitions. [2025-01-09 22:20:11,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-01-09 22:20:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 190 transitions. [2025-01-09 22:20:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 22:20:11,452 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:11,452 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 22:20:11,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 22:20:11,453 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:11,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:11,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1481468952, now seen corresponding path program 1 times [2025-01-09 22:20:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:11,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435457247] [2025-01-09 22:20:11,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:11,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 22:20:11,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 22:20:11,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:11,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:20:11,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:11,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435457247] [2025-01-09 22:20:11,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435457247] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:20:11,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:20:11,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 22:20:11,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230098966] [2025-01-09 22:20:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:20:11,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:20:11,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:11,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:20:11,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:20:11,589 INFO L87 Difference]: Start difference. First operand 175 states and 190 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:20:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:20:11,713 INFO L93 Difference]: Finished difference Result 174 states and 189 transitions. [2025-01-09 22:20:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:20:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-09 22:20:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:20:11,715 INFO L225 Difference]: With dead ends: 174 [2025-01-09 22:20:11,715 INFO L226 Difference]: Without dead ends: 174 [2025-01-09 22:20:11,715 INFO L434 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 [2025-01-09 22:20:11,716 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 4 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:20:11,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 301 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:20:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-01-09 22:20:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2025-01-09 22:20:11,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 98 states have (on average 1.8061224489795917) internal successors, (177), 166 states have internal predecessors, (177), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 189 transitions. [2025-01-09 22:20:11,734 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 189 transitions. Word has length 6 [2025-01-09 22:20:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:20:11,734 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 189 transitions. [2025-01-09 22:20:11,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:20:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 189 transitions. [2025-01-09 22:20:11,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 22:20:11,735 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:11,735 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:20:11,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 22:20:11,735 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:11,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1319102710, now seen corresponding path program 1 times [2025-01-09 22:20:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443696481] [2025-01-09 22:20:11,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:11,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 22:20:11,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 22:20:11,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:11,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 22:20:11,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239366610] [2025-01-09 22:20:11,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:11,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:11,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:20:11,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:20:11,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 22:20:11,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 22:20:11,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 22:20:11,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:11,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:11,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 22:20:11,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:20:11,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:20:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:20:11,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:20:11,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:11,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443696481] [2025-01-09 22:20:11,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 22:20:11,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239366610] [2025-01-09 22:20:11,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239366610] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:20:11,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:20:11,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:20:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197163923] [2025-01-09 22:20:11,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:20:11,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:20:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:11,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:20:11,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:20:11,987 INFO L87 Difference]: Start difference. First operand 174 states and 189 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:20:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:20:12,151 INFO L93 Difference]: Finished difference Result 183 states and 198 transitions. [2025-01-09 22:20:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:20:12,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-09 22:20:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:20:12,153 INFO L225 Difference]: With dead ends: 183 [2025-01-09 22:20:12,153 INFO L226 Difference]: Without dead ends: 183 [2025-01-09 22:20:12,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:20:12,153 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 11 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:20:12,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 480 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:20:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-01-09 22:20:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2025-01-09 22:20:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 106 states have (on average 1.7547169811320755) internal successors, (186), 174 states have internal predecessors, (186), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 198 transitions. [2025-01-09 22:20:12,172 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 198 transitions. Word has length 7 [2025-01-09 22:20:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:20:12,172 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 198 transitions. [2025-01-09 22:20:12,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:20:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 198 transitions. [2025-01-09 22:20:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 22:20:12,177 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:12,177 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:20:12,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 22:20:12,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:12,382 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:12,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:12,382 INFO L85 PathProgramCache]: Analyzing trace with hash -324298675, now seen corresponding path program 1 times [2025-01-09 22:20:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:12,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544715760] [2025-01-09 22:20:12,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:12,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:12,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 22:20:12,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 22:20:12,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:12,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 22:20:12,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398528643] [2025-01-09 22:20:12,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:12,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:12,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:20:12,508 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:20:12,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 22:20:12,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 22:20:12,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 22:20:12,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:12,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:12,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 22:20:12,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:20:12,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-01-09 22:20:12,795 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 13 treesize of output 9 [2025-01-09 22:20:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 22:20:12,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:20:12,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:12,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544715760] [2025-01-09 22:20:12,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 22:20:12,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398528643] [2025-01-09 22:20:12,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398528643] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:20:12,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:20:12,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:20:12,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343299397] [2025-01-09 22:20:12,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:20:12,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:20:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:12,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:20:12,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:20:12,860 INFO L87 Difference]: Start difference. First operand 183 states and 198 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 22:20:13,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:20:13,024 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2025-01-09 22:20:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:20:13,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 22:20:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:20:13,025 INFO L225 Difference]: With dead ends: 195 [2025-01-09 22:20:13,026 INFO L226 Difference]: Without dead ends: 185 [2025-01-09 22:20:13,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:20:13,026 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 3 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:20:13,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 660 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:20:13,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-01-09 22:20:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2025-01-09 22:20:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 176 states have internal predecessors, (188), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 200 transitions. [2025-01-09 22:20:13,040 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 200 transitions. Word has length 66 [2025-01-09 22:20:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:20:13,040 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 200 transitions. [2025-01-09 22:20:13,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 22:20:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 200 transitions. [2025-01-09 22:20:13,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 22:20:13,042 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:13,042 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:20:13,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 22:20:13,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:13,243 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:13,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:13,244 INFO L85 PathProgramCache]: Analyzing trace with hash -18905641, now seen corresponding path program 1 times [2025-01-09 22:20:13,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:13,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188791365] [2025-01-09 22:20:13,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:13,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-09 22:20:13,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 22:20:13,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:13,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 22:20:13,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653861892] [2025-01-09 22:20:13,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:13,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:13,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:20:13,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:20:13,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 22:20:13,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-09 22:20:13,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 22:20:13,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:13,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:13,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 22:20:13,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:20:13,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-01-09 22:20:13,778 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 13 treesize of output 9 [2025-01-09 22:20:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 92 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-01-09 22:20:13,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:20:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-01-09 22:20:14,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:14,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188791365] [2025-01-09 22:20:14,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 22:20:14,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653861892] [2025-01-09 22:20:14,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653861892] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:20:14,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:20:14,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2025-01-09 22:20:14,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752476555] [2025-01-09 22:20:14,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:20:14,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 22:20:14,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:14,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 22:20:14,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:20:14,069 INFO L87 Difference]: Start difference. First operand 185 states and 200 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 22:20:14,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:20:14,411 INFO L93 Difference]: Finished difference Result 204 states and 220 transitions. [2025-01-09 22:20:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 22:20:14,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2025-01-09 22:20:14,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:20:14,412 INFO L225 Difference]: With dead ends: 204 [2025-01-09 22:20:14,413 INFO L226 Difference]: Without dead ends: 189 [2025-01-09 22:20:14,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2025-01-09 22:20:14,414 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 19 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:20:14,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 847 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:20:14,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-01-09 22:20:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2025-01-09 22:20:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 112 states have (on average 1.7142857142857142) internal successors, (192), 180 states have internal predecessors, (192), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2025-01-09 22:20:14,427 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 71 [2025-01-09 22:20:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:20:14,427 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2025-01-09 22:20:14,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 22:20:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2025-01-09 22:20:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-01-09 22:20:14,429 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:14,429 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:20:14,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 22:20:14,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:14,630 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:14,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1215067341, now seen corresponding path program 2 times [2025-01-09 22:20:14,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:14,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954014105] [2025-01-09 22:20:14,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:20:14,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:14,666 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-01-09 22:20:14,845 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-01-09 22:20:14,845 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:20:14,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 22:20:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944079691] [2025-01-09 22:20:14,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:20:14,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:14,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:20:14,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:20:14,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 22:20:15,000 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 86 statements into 2 equivalence classes. [2025-01-09 22:20:15,473 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 86 of 86 statements. [2025-01-09 22:20:15,473 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:20:15,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:15,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-09 22:20:15,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:20:15,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-01-09 22:20:15,566 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 13 treesize of output 9 [2025-01-09 22:20:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 243 proven. 78 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-01-09 22:20:15,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:20:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 79 proven. 74 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2025-01-09 22:20:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:16,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954014105] [2025-01-09 22:20:16,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 22:20:16,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944079691] [2025-01-09 22:20:16,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944079691] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:20:16,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:20:16,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2025-01-09 22:20:16,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508231118] [2025-01-09 22:20:16,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:20:16,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 22:20:16,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:16,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 22:20:16,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-01-09 22:20:16,062 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 22:20:16,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:20:16,762 INFO L93 Difference]: Finished difference Result 211 states and 230 transitions. [2025-01-09 22:20:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 22:20:16,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 86 [2025-01-09 22:20:16,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:20:16,763 INFO L225 Difference]: With dead ends: 211 [2025-01-09 22:20:16,764 INFO L226 Difference]: Without dead ends: 196 [2025-01-09 22:20:16,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 22:20:16,765 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 27 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:20:16,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2046 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 22:20:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-01-09 22:20:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2025-01-09 22:20:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 119 states have (on average 1.6722689075630253) internal successors, (199), 187 states have internal predecessors, (199), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 211 transitions. [2025-01-09 22:20:16,775 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 211 transitions. Word has length 86 [2025-01-09 22:20:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:20:16,775 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 211 transitions. [2025-01-09 22:20:16,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 22:20:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 211 transitions. [2025-01-09 22:20:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-01-09 22:20:16,777 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:16,777 INFO L218 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:20:16,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 22:20:16,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 22:20:16,978 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:16,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash -208334515, now seen corresponding path program 3 times [2025-01-09 22:20:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:16,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139131544] [2025-01-09 22:20:16,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:20:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:17,028 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 106 statements into 18 equivalence classes. [2025-01-09 22:20:17,606 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 22:20:17,607 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 22:20:17,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 22:20:17,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734252406] [2025-01-09 22:20:17,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:20:17,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:17,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:20:17,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:20:17,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 22:20:17,798 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 106 statements into 18 equivalence classes. [2025-01-09 22:20:17,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 106 statements. [2025-01-09 22:20:17,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:20:17,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:17,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 22:20:17,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:20:17,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:20:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2025-01-09 22:20:17,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:20:17,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:17,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139131544] [2025-01-09 22:20:17,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 22:20:17,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734252406] [2025-01-09 22:20:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734252406] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:20:17,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:20:17,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:20:17,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770822907] [2025-01-09 22:20:17,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:20:17,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:20:17,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:17,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:20:17,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:20:17,892 INFO L87 Difference]: Start difference. First operand 196 states and 211 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-09 22:20:17,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:20:17,986 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2025-01-09 22:20:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:20:17,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 106 [2025-01-09 22:20:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:20:17,988 INFO L225 Difference]: With dead ends: 195 [2025-01-09 22:20:17,988 INFO L226 Difference]: Without dead ends: 195 [2025-01-09 22:20:17,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:20:17,989 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 11 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:20:17,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 502 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:20:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-01-09 22:20:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2025-01-09 22:20:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 119 states have (on average 1.6638655462184875) internal successors, (198), 186 states have internal predecessors, (198), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 210 transitions. [2025-01-09 22:20:17,995 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 210 transitions. Word has length 106 [2025-01-09 22:20:17,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:20:17,996 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 210 transitions. [2025-01-09 22:20:17,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-09 22:20:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 210 transitions. [2025-01-09 22:20:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-01-09 22:20:17,997 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:17,997 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:20:18,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 22:20:18,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:18,198 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:18,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash 702586386, now seen corresponding path program 1 times [2025-01-09 22:20:18,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:18,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922109630] [2025-01-09 22:20:18,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:18,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 22:20:18,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 22:20:18,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:18,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 61 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2025-01-09 22:20:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922109630] [2025-01-09 22:20:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922109630] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:20:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562542304] [2025-01-09 22:20:19,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:19,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:19,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:20:19,444 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:20:19,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 22:20:19,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 22:20:19,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 22:20:19,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:19,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:19,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 22:20:19,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:20:19,916 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-01-09 22:20:19,970 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-01-09 22:20:19,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-01-09 22:20:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 1 refuted. 0 times theorem prover too weak. 733 trivial. 60 not checked. [2025-01-09 22:20:19,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:20:20,227 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-09 22:20:20,227 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 12 treesize of output 11 [2025-01-09 22:20:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 61 refuted. 0 times theorem prover too weak. 733 trivial. 0 not checked. [2025-01-09 22:20:20,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562542304] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:20:20,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:20:20,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 16 [2025-01-09 22:20:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755847612] [2025-01-09 22:20:20,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:20:20,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 22:20:20,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:20,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 22:20:20,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2025-01-09 22:20:20,254 INFO L87 Difference]: Start difference. First operand 195 states and 210 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 22:20:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:20:20,812 INFO L93 Difference]: Finished difference Result 193 states and 208 transitions. [2025-01-09 22:20:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 22:20:20,812 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2025-01-09 22:20:20,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:20:20,814 INFO L225 Difference]: With dead ends: 193 [2025-01-09 22:20:20,814 INFO L226 Difference]: Without dead ends: 193 [2025-01-09 22:20:20,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 228 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=310, Unknown=1, NotChecked=36, Total=420 [2025-01-09 22:20:20,815 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 13 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:20:20,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1270 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 738 Invalid, 0 Unknown, 178 Unchecked, 0.5s Time] [2025-01-09 22:20:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-01-09 22:20:20,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2025-01-09 22:20:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 119 states have (on average 1.6470588235294117) internal successors, (196), 184 states have internal predecessors, (196), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:20:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2025-01-09 22:20:20,820 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 118 [2025-01-09 22:20:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:20:20,820 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2025-01-09 22:20:20,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 22:20:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2025-01-09 22:20:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-01-09 22:20:20,824 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:20:20,824 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:20:20,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 22:20:21,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 22:20:21,024 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:20:21,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:20:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 702586387, now seen corresponding path program 1 times [2025-01-09 22:20:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:20:21,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709366378] [2025-01-09 22:20:21,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:21,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:20:21,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 22:20:21,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 22:20:21,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:21,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 601 proven. 97 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2025-01-09 22:20:23,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:20:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709366378] [2025-01-09 22:20:23,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709366378] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:20:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064415509] [2025-01-09 22:20:23,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:20:23,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:20:23,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:20:23,542 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:20:23,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 22:20:23,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 22:20:25,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 22:20:25,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:20:25,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:20:25,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-01-09 22:20:25,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:20:25,406 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 10 treesize of output 9 [2025-01-09 22:20:36,283 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-01-09 22:20:36,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:20:36,386 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 18 treesize of output 13 [2025-01-09 22:20:36,402 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 22:20:36,403 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 [2025-01-09 22:20:36,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 503 proven. 316 refuted. 0 times theorem prover too weak. 473 trivial. 103 not checked. [2025-01-09 22:20:36,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:20:36,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064415509] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:20:36,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:20:36,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27] total 45 [2025-01-09 22:20:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496924754] [2025-01-09 22:20:36,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:20:36,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 22:20:36,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:20:36,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 22:20:36,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2012, Unknown=3, NotChecked=90, Total=2256 [2025-01-09 22:20:36,719 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand has 46 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 41 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 22:20:40,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-09 22:20:45,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-09 22:20:49,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-09 22:20:53,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-09 22:20:57,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-09 22:21:01,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-09 22:21:05,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-09 22:21:10,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-01-09 22:21:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:21:13,331 INFO L93 Difference]: Finished difference Result 199 states and 217 transitions. [2025-01-09 22:21:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 22:21:13,332 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 41 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 118 [2025-01-09 22:21:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:21:13,334 INFO L225 Difference]: With dead ends: 199 [2025-01-09 22:21:13,334 INFO L226 Difference]: Without dead ends: 199 [2025-01-09 22:21:13,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=296, Invalid=3487, Unknown=3, NotChecked=120, Total=3906 [2025-01-09 22:21:13,336 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 32 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 10 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3380 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:21:13,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3380 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2778 Invalid, 8 Unknown, 176 Unchecked, 35.2s Time] [2025-01-09 22:21:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-01-09 22:21:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2025-01-09 22:21:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 119 states have (on average 1.6302521008403361) internal successors, (194), 182 states have internal predecessors, (194), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:21:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 206 transitions. [2025-01-09 22:21:13,341 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 206 transitions. Word has length 118 [2025-01-09 22:21:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:21:13,342 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 206 transitions. [2025-01-09 22:21:13,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 41 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 22:21:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 206 transitions. [2025-01-09 22:21:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-01-09 22:21:13,343 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:21:13,343 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:21:13,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 22:21:13,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:21:13,547 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:21:13,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:21:13,548 INFO L85 PathProgramCache]: Analyzing trace with hash 875652339, now seen corresponding path program 1 times [2025-01-09 22:21:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:21:13,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724921554] [2025-01-09 22:21:13,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:21:13,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:21:13,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-01-09 22:21:13,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-01-09 22:21:13,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:21:13,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:21:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 833 proven. 96 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2025-01-09 22:21:14,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:21:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724921554] [2025-01-09 22:21:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724921554] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:21:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808869403] [2025-01-09 22:21:14,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:21:14,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:21:14,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:21:14,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:21:14,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 22:21:15,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-01-09 22:21:15,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-01-09 22:21:15,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:21:15,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:21:15,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 22:21:15,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:21:15,485 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-01-09 22:21:15,531 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-01-09 22:21:15,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-01-09 22:21:15,595 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-01-09 22:21:15,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-01-09 22:21:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 2 refuted. 0 times theorem prover too weak. 527 trivial. 147 not checked. [2025-01-09 22:21:15,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:21:16,066 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-09 22:21:16,067 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 12 treesize of output 11 [2025-01-09 22:21:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 149 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2025-01-09 22:21:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808869403] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:21:16,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:21:16,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 11] total 22 [2025-01-09 22:21:16,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708470449] [2025-01-09 22:21:16,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:21:16,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 22:21:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:21:16,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 22:21:16,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=403, Unknown=1, NotChecked=40, Total=506 [2025-01-09 22:21:16,084 INFO L87 Difference]: Start difference. First operand 191 states and 206 transitions. Second operand has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 22:21:16,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:21:16,950 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2025-01-09 22:21:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 22:21:16,951 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2025-01-09 22:21:16,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:21:16,952 INFO L225 Difference]: With dead ends: 188 [2025-01-09 22:21:16,952 INFO L226 Difference]: Without dead ends: 188 [2025-01-09 22:21:16,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 230 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=606, Unknown=1, NotChecked=50, Total=756 [2025-01-09 22:21:16,953 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 37 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 22:21:16,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1583 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1043 Invalid, 0 Unknown, 173 Unchecked, 0.7s Time] [2025-01-09 22:21:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-01-09 22:21:16,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2025-01-09 22:21:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 119 states have (on average 1.6050420168067228) internal successors, (191), 179 states have internal predecessors, (191), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:21:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2025-01-09 22:21:16,958 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 120 [2025-01-09 22:21:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:21:16,958 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2025-01-09 22:21:16,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 3 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 22:21:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2025-01-09 22:21:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-01-09 22:21:16,959 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:21:16,960 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:21:16,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 22:21:17,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:21:17,160 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:21:17,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:21:17,161 INFO L85 PathProgramCache]: Analyzing trace with hash 875652340, now seen corresponding path program 1 times [2025-01-09 22:21:17,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:21:17,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255226355] [2025-01-09 22:21:17,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:21:17,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:21:17,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-01-09 22:21:17,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-01-09 22:21:17,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:21:17,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:21:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 719 proven. 246 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2025-01-09 22:21:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:21:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255226355] [2025-01-09 22:21:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255226355] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:21:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653835882] [2025-01-09 22:21:19,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:21:19,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:21:19,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:21:20,000 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:21:20,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 22:21:20,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-01-09 22:21:22,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-01-09 22:21:22,333 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:21:22,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:21:22,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 115 conjuncts are in the unsatisfiable core [2025-01-09 22:21:22,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:21:22,593 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 10 treesize of output 9 [2025-01-09 22:21:25,122 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-01-09 22:21:25,122 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 [2025-01-09 22:21:25,134 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 [2025-01-09 22:21:25,319 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-01-09 22:21:25,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:21:25,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:21:25,404 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2025-01-09 22:21:25,405 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 [2025-01-09 22:21:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 535 proven. 440 refuted. 0 times theorem prover too weak. 250 trivial. 170 not checked. [2025-01-09 22:21:25,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:21:25,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653835882] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:21:25,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:21:25,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 37] total 57 [2025-01-09 22:21:25,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934310527] [2025-01-09 22:21:25,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:21:25,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-01-09 22:21:25,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:21:25,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-01-09 22:21:25,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3239, Unknown=1, NotChecked=114, Total=3540 [2025-01-09 22:21:25,698 INFO L87 Difference]: Start difference. First operand 188 states and 203 transitions. Second operand has 58 states, 55 states have (on average 1.8909090909090909) internal successors, (104), 54 states have internal predecessors, (104), 4 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-09 22:21:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:21:32,155 INFO L93 Difference]: Finished difference Result 226 states and 256 transitions. [2025-01-09 22:21:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-09 22:21:32,155 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 55 states have (on average 1.8909090909090909) internal successors, (104), 54 states have internal predecessors, (104), 4 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) Word has length 120 [2025-01-09 22:21:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:21:32,157 INFO L225 Difference]: With dead ends: 226 [2025-01-09 22:21:32,157 INFO L226 Difference]: Without dead ends: 226 [2025-01-09 22:21:32,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1749 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=464, Invalid=6345, Unknown=1, NotChecked=162, Total=6972 [2025-01-09 22:21:32,159 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 86 mSDsluCounter, 4241 mSDsCounter, 0 mSdLazyCounter, 4438 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 4669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 203 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:21:32,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 4401 Invalid, 4669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4438 Invalid, 0 Unknown, 203 Unchecked, 4.0s Time] [2025-01-09 22:21:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-01-09 22:21:32,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 185. [2025-01-09 22:21:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 119 states have (on average 1.5798319327731092) internal successors, (188), 176 states have internal predecessors, (188), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-01-09 22:21:32,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 200 transitions. [2025-01-09 22:21:32,166 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 200 transitions. Word has length 120 [2025-01-09 22:21:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:21:32,166 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 200 transitions. [2025-01-09 22:21:32,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 55 states have (on average 1.8909090909090909) internal successors, (104), 54 states have internal predecessors, (104), 4 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-09 22:21:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 200 transitions. [2025-01-09 22:21:32,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-01-09 22:21:32,168 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:21:32,168 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:21:32,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 22:21:32,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:21:32,369 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 67 more)] === [2025-01-09 22:21:32,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:21:32,369 INFO L85 PathProgramCache]: Analyzing trace with hash -403276289, now seen corresponding path program 1 times [2025-01-09 22:21:32,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:21:32,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562804276] [2025-01-09 22:21:32,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:21:32,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:21:32,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-01-09 22:21:32,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-01-09 22:21:32,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:21:32,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:21:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 830 proven. 188 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2025-01-09 22:21:34,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:21:34,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562804276] [2025-01-09 22:21:34,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562804276] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:21:34,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785854736] [2025-01-09 22:21:34,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:21:34,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:21:34,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:21:34,022 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:21:34,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 22:21:34,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes.