./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/discover_list.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/discover_list.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2aca78a4c905fef1e916fc947a81c98263f5056a4b2b5d7ea35195ed74fad5a5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:18:24,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:18:24,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:18:24,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:18:24,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:18:24,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:18:24,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:18:24,720 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:18:24,720 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:18:24,720 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:18:24,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:18:24,720 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:18:24,721 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:18:24,721 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:18:24,721 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:18:24,721 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:18:24,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:18:24,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:18:24,722 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 ! call(reach_error())) ) 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 -> 2aca78a4c905fef1e916fc947a81c98263f5056a4b2b5d7ea35195ed74fad5a5 [2025-02-07 20:18:24,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:18:24,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:18:24,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:18:24,943 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:18:24,943 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:18:24,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/discover_list.c [2025-02-07 20:18:26,098 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/87070c6ac/1f56a141f7af4f998e98c423d03e8259/FLAG53800d180 [2025-02-07 20:18:26,346 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:18:26,346 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/discover_list.c [2025-02-07 20:18:26,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/87070c6ac/1f56a141f7af4f998e98c423d03e8259/FLAG53800d180 [2025-02-07 20:18:26,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/87070c6ac/1f56a141f7af4f998e98c423d03e8259 [2025-02-07 20:18:26,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:18:26,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:18:26,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:18:26,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:18:26,375 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:18:26,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544b2b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26, skipping insertion in model container [2025-02-07 20:18:26,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,399 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:18:26,529 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/discover_list.c[5067,5080] [2025-02-07 20:18:26,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:18:26,608 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:18:26,631 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/discover_list.c[5067,5080] [2025-02-07 20:18:26,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:18:26,689 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:18:26,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26 WrapperNode [2025-02-07 20:18:26,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:18:26,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:18:26,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:18:26,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:18:26,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,730 INFO L138 Inliner]: procedures = 37, calls = 248, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 509 [2025-02-07 20:18:26,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:18:26,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:18:26,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:18:26,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:18:26,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,764 INFO L175 MemorySlicer]: Split 181 memory accesses to 7 slices as follows [2, 10, 11, 100, 42, 12, 4]. 55 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 148 writes are split as follows [0, 0, 11, 97, 39, 0, 1]. [2025-02-07 20:18:26,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,765 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,780 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:18:26,795 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:18:26,795 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:18:26,795 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:18:26,795 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (1/1) ... [2025-02-07 20:18:26,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:18:26,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:18:26,822 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) [2025-02-07 20:18:26,826 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 [2025-02-07 20:18:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:18:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-07 20:18:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-07 20:18:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-07 20:18:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-07 20:18:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 20:18:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2025-02-07 20:18:26,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2025-02-07 20:18:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-07 20:18:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-07 20:18:26,842 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-07 20:18:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2025-02-07 20:18:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2025-02-07 20:18:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2025-02-07 20:18:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:18:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-07 20:18:26,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-07 20:18:26,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 20:18:26,958 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:18:26,959 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:18:28,920 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L495: call ULTIMATE.dealloc(main_~#tobj~0#1.base, main_~#tobj~0#1.offset);havoc main_~#tobj~0#1.base, main_~#tobj~0#1.offset;call ULTIMATE.dealloc(main_~#opts~0#1.base, main_~#opts~0#1.offset);havoc main_~#opts~0#1.base, main_~#opts~0#1.offset; [2025-02-07 20:18:28,921 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L475: havoc do_discover_list_#t~mem97#1; [2025-02-07 20:18:28,921 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L108: havoc smp_send_req_#t~nondet4#1; [2025-02-07 20:18:28,921 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L455: do_discover_list_#t~ret88#1 := smp_get_func_def_resp_len_#res#1;havoc smp_get_func_def_resp_len_#t~mem5#1, smp_get_func_def_resp_len_#t~mem6#1, smp_get_func_def_resp_len_#t~mem7#1, smp_get_func_def_resp_len_#t~pre8#1.base, smp_get_func_def_resp_len_#t~pre8#1.offset, smp_get_func_def_resp_len_~func_code#1, smp_get_func_def_resp_len_~drlp~0#1.base, smp_get_func_def_resp_len_~drlp~0#1.offset;havoc smp_get_func_def_resp_len_#in~func_code#1;assume { :end_inline_smp_get_func_def_resp_len } true;assume -2147483648 <= do_discover_list_#t~ret88#1 && do_discover_list_#t~ret88#1 <= 2147483647;do_discover_list_~len~2#1 := do_discover_list_#t~ret88#1;havoc do_discover_list_#t~mem87#1;havoc do_discover_list_#t~ret88#1; [2025-02-07 20:18:28,921 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L489: havoc do_discover_list_#t~mem102#1; [2025-02-07 20:18:28,921 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L456: assume do_discover_list_~len~2#1 < 0;do_discover_list_~len~2#1 := 0; [2025-02-07 20:18:28,921 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L456: assume !(do_discover_list_~len~2#1 < 0); [2025-02-07 20:18:28,921 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L419: call ULTIMATE.dealloc(do_discover_list_~#smp_req~0#1.base, do_discover_list_~#smp_req~0#1.offset);havoc do_discover_list_~#smp_req~0#1.base, do_discover_list_~#smp_req~0#1.offset;call ULTIMATE.dealloc(do_discover_list_~#smp_rr~0#1.base, do_discover_list_~#smp_rr~0#1.offset);havoc do_discover_list_~#smp_rr~0#1.base, do_discover_list_~#smp_rr~0#1.offset; [2025-02-07 20:18:28,972 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2025-02-07 20:18:28,972 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:18:28,984 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:18:28,985 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:18:28,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:18:28 BoogieIcfgContainer [2025-02-07 20:18:28,985 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:18:28,987 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:18:28,987 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:18:28,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:18:28,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:18:26" (1/3) ... [2025-02-07 20:18:28,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75beb3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:18:28, skipping insertion in model container [2025-02-07 20:18:28,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:18:26" (2/3) ... [2025-02-07 20:18:28,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75beb3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:18:28, skipping insertion in model container [2025-02-07 20:18:28,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:18:28" (3/3) ... [2025-02-07 20:18:28,991 INFO L128 eAbstractionObserver]: Analyzing ICFG discover_list.c [2025-02-07 20:18:29,002 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:18:29,003 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG discover_list.c that has 9 procedures, 103 locations, 1 initial locations, 12 loop locations, and 1 error locations. [2025-02-07 20:18:29,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:18:29,043 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=LoopHeads, 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;@11a7e3a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:18:29,043 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:18:29,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 68 states have (on average 1.5441176470588236) internal successors, (105), 71 states have internal predecessors, (105), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:18:29,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-07 20:18:29,051 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:18:29,051 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:18:29,051 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:18:29,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:18:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1594409002, now seen corresponding path program 1 times [2025-02-07 20:18:29,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:18:29,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530464296] [2025-02-07 20:18:29,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:18:29,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:18:30,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-07 20:18:30,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 20:18:30,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:18:30,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:18:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:18:30,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:18:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530464296] [2025-02-07 20:18:30,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530464296] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:18:30,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:18:30,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:18:30,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791434429] [2025-02-07 20:18:30,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:18:30,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:18:30,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:18:30,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:18:30,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:18:30,553 INFO L87 Difference]: Start difference. First operand has 83 states, 68 states have (on average 1.5441176470588236) internal successors, (105), 71 states have internal predecessors, (105), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:18:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:18:30,907 INFO L93 Difference]: Finished difference Result 193 states and 290 transitions. [2025-02-07 20:18:30,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:18:30,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2025-02-07 20:18:30,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:18:30,914 INFO L225 Difference]: With dead ends: 193 [2025-02-07 20:18:30,914 INFO L226 Difference]: Without dead ends: 85 [2025-02-07 20:18:30,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:18:30,919 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 42 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 20:18:30,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 419 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 20:18:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-07 20:18:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2025-02-07 20:18:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:18:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2025-02-07 20:18:30,954 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 37 [2025-02-07 20:18:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:18:30,954 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2025-02-07 20:18:30,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:18:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2025-02-07 20:18:30,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-07 20:18:30,957 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:18:30,957 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:18:30,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 20:18:30,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:18:30,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:18:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1675066295, now seen corresponding path program 1 times [2025-02-07 20:18:30,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:18:30,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997463783] [2025-02-07 20:18:30,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:18:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:18:31,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-07 20:18:31,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 20:18:31,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:18:31,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:18:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:18:32,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:18:32,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997463783] [2025-02-07 20:18:32,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997463783] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:18:32,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:18:32,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:18:32,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816250358] [2025-02-07 20:18:32,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:18:32,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:18:32,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:18:32,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:18:32,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:18:32,023 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:18:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:18:32,466 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2025-02-07 20:18:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:18:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2025-02-07 20:18:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:18:32,468 INFO L225 Difference]: With dead ends: 104 [2025-02-07 20:18:32,469 INFO L226 Difference]: Without dead ends: 66 [2025-02-07 20:18:32,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:18:32,470 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 1 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 20:18:32,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 235 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 20:18:32,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-07 20:18:32,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2025-02-07 20:18:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 states have internal predecessors, (70), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:18:32,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 86 transitions. [2025-02-07 20:18:32,481 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 86 transitions. Word has length 37 [2025-02-07 20:18:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:18:32,481 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 86 transitions. [2025-02-07 20:18:32,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:18:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 86 transitions. [2025-02-07 20:18:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-07 20:18:32,482 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:18:32,482 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:18:32,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 20:18:32,482 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:18:32,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:18:32,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2109366824, now seen corresponding path program 1 times [2025-02-07 20:18:32,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:18:32,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475867316] [2025-02-07 20:18:32,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:18:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:18:33,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-07 20:18:33,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 20:18:33,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:18:33,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:18:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:18:33,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:18:33,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475867316] [2025-02-07 20:18:33,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475867316] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:18:33,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:18:33,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 20:18:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049030801] [2025-02-07 20:18:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:18:33,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 20:18:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:18:33,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 20:18:33,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 20:18:33,491 INFO L87 Difference]: Start difference. First operand 66 states and 86 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:18:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:18:33,506 INFO L93 Difference]: Finished difference Result 117 states and 153 transitions. [2025-02-07 20:18:33,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 20:18:33,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2025-02-07 20:18:33,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:18:33,507 INFO L225 Difference]: With dead ends: 117 [2025-02-07 20:18:33,507 INFO L226 Difference]: Without dead ends: 67 [2025-02-07 20:18:33,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 20:18:33,507 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:18:33,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 241 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:18:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-07 20:18:33,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2025-02-07 20:18:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.290909090909091) internal successors, (71), 55 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:18:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2025-02-07 20:18:33,519 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 37 [2025-02-07 20:18:33,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:18:33,519 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2025-02-07 20:18:33,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:18:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2025-02-07 20:18:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-07 20:18:33,520 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:18:33,520 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:18:33,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 20:18:33,521 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:18:33,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:18:33,521 INFO L85 PathProgramCache]: Analyzing trace with hash 825318594, now seen corresponding path program 1 times [2025-02-07 20:18:33,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:18:33,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905421289] [2025-02-07 20:18:33,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:18:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:18:34,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-07 20:18:34,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-07 20:18:34,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:18:34,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:18:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:18:34,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:18:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905421289] [2025-02-07 20:18:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905421289] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:18:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658736494] [2025-02-07 20:18:34,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:18:34,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:18:34,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:18:34,418 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) [2025-02-07 20:18:34,421 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 [2025-02-07 20:18:35,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-07 20:18:35,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-07 20:18:35,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:18:35,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:18:35,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-07 20:18:35,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:18:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:18:35,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:18:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:18:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658736494] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-07 20:18:35,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:18:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 6] total 10 [2025-02-07 20:18:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866988009] [2025-02-07 20:18:35,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:18:35,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 20:18:35,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:18:35,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 20:18:35,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-07 20:18:35,408 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:18:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:18:35,422 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2025-02-07 20:18:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 20:18:35,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2025-02-07 20:18:35,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:18:35,424 INFO L225 Difference]: With dead ends: 104 [2025-02-07 20:18:35,424 INFO L226 Difference]: Without dead ends: 68 [2025-02-07 20:18:35,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-07 20:18:35,425 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:18:35,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:18:35,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-07 20:18:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-02-07 20:18:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:18:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2025-02-07 20:18:35,429 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 38 [2025-02-07 20:18:35,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:18:35,429 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2025-02-07 20:18:35,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:18:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2025-02-07 20:18:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-07 20:18:35,430 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:18:35,431 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:18:35,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 20:18:35,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:18:35,632 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:18:35,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:18:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1303009372, now seen corresponding path program 1 times [2025-02-07 20:18:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:18:35,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897027621] [2025-02-07 20:18:35,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:18:35,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:18:36,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-07 20:18:36,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 20:18:36,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:18:36,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:18:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:18:36,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:18:36,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897027621] [2025-02-07 20:18:36,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897027621] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:18:36,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551534717] [2025-02-07 20:18:36,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:18:36,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:18:36,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:18:36,530 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) [2025-02-07 20:18:36,533 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 [2025-02-07 20:18:37,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-07 20:18:37,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 20:18:37,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:18:37,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:18:37,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:18:37,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:18:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:18:37,520 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:18:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:18:37,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551534717] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:18:37,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:18:37,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-07 20:18:37,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544601294] [2025-02-07 20:18:37,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:18:37,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-07 20:18:37,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:18:37,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-07 20:18:37,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-02-07 20:18:37,593 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 20:18:37,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:18:37,660 INFO L93 Difference]: Finished difference Result 124 states and 162 transitions. [2025-02-07 20:18:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 20:18:37,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2025-02-07 20:18:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:18:37,662 INFO L225 Difference]: With dead ends: 124 [2025-02-07 20:18:37,663 INFO L226 Difference]: Without dead ends: 71 [2025-02-07 20:18:37,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:18:37,664 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:18:37,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:18:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-07 20:18:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-02-07 20:18:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.271186440677966) internal successors, (75), 59 states have internal predecessors, (75), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:18:37,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2025-02-07 20:18:37,673 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 39 [2025-02-07 20:18:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:18:37,673 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2025-02-07 20:18:37,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 20:18:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2025-02-07 20:18:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-07 20:18:37,674 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:18:37,674 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:18:37,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 20:18:37,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:18:37,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:18:37,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:18:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1441134902, now seen corresponding path program 2 times [2025-02-07 20:18:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:18:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964558777] [2025-02-07 20:18:37,877 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:18:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:18:38,537 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-07 20:18:38,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 20:18:38,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:18:38,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:18:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:18:38,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:18:38,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964558777] [2025-02-07 20:18:38,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964558777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:18:38,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754340777] [2025-02-07 20:18:38,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:18:38,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:18:38,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:18:38,821 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) [2025-02-07 20:18:38,824 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 [2025-02-07 20:18:39,614 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-07 20:19:37,510 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 20:19:37,510 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:19:37,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:37,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-07 20:19:37,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:37,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754340777] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:41,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:41,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2025-02-07 20:19:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561744400] [2025-02-07 20:19:41,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:41,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-07 20:19:41,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:41,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-07 20:19:41,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=197, Unknown=1, NotChecked=0, Total=306 [2025-02-07 20:19:41,780 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 20:19:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:41,959 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2025-02-07 20:19:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 20:19:41,960 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2025-02-07 20:19:41,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:41,960 INFO L225 Difference]: With dead ends: 130 [2025-02-07 20:19:41,960 INFO L226 Difference]: Without dead ends: 77 [2025-02-07 20:19:41,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=180, Invalid=281, Unknown=1, NotChecked=0, Total=462 [2025-02-07 20:19:41,961 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:41,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 482 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-07 20:19:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2025-02-07 20:19:41,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 65 states have internal predecessors, (81), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 20:19:41,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2025-02-07 20:19:41,972 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 42 [2025-02-07 20:19:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:41,973 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2025-02-07 20:19:41,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 20:19:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2025-02-07 20:19:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-07 20:19:41,973 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:41,973 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:41,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 20:19:42,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:42,174 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:42,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash 167479158, now seen corresponding path program 3 times [2025-02-07 20:19:42,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:42,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588842723] [2025-02-07 20:19:42,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:19:42,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:42,949 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 6 equivalence classes. [2025-02-07 20:19:42,994 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 40 of 48 statements. [2025-02-07 20:19:42,994 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 20:19:42,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-02-07 20:19:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588842723] [2025-02-07 20:19:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588842723] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597890345] [2025-02-07 20:19:43,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:19:43,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:43,140 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) [2025-02-07 20:19:43,141 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 [2025-02-07 20:19:43,927 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 6 equivalence classes.