./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i --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/uthash-2.0.2/uthash_JEN_test2-1.i -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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 04:54:15,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 04:54:15,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 04:54:15,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 04:54:15,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 04:54:15,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 04:54:15,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 04:54:15,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 04:54:15,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 04:54:15,929 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 04:54:15,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 04:54:15,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 04:54:15,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 04:54:15,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 04:54:15,931 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 04:54:15,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 04:54:15,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 04:54:15,931 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 04:54:15,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 04:54:15,932 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 04:54:15,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 04:54:15,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 04:54:15,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:54:15,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 04:54:15,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 04:54:15,933 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 04:54:15,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 04:54:15,934 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 04:54:15,934 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 04:54:15,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 04:54:15,934 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 04:54:15,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 04:54:15,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 04:54:15,934 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 -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2025-02-08 04:54:16,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 04:54:16,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 04:54:16,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 04:54:16,174 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 04:54:16,174 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 04:54:16,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2025-02-08 04:54:17,301 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/49cb06e49/8e13388a9b3b4faaaf78c0ad8876112b/FLAG1d2da5d50 [2025-02-08 04:54:17,622 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 04:54:17,623 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2025-02-08 04:54:17,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/49cb06e49/8e13388a9b3b4faaaf78c0ad8876112b/FLAG1d2da5d50 [2025-02-08 04:54:17,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/49cb06e49/8e13388a9b3b4faaaf78c0ad8876112b [2025-02-08 04:54:17,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 04:54:17,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 04:54:17,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 04:54:17,869 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 04:54:17,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 04:54:17,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:54:17" (1/1) ... [2025-02-08 04:54:17,872 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c38d0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:17, skipping insertion in model container [2025-02-08 04:54:17,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:54:17" (1/1) ... [2025-02-08 04:54:17,893 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 04:54:18,186 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/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2025-02-08 04:54:18,264 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/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2025-02-08 04:54:18,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:54:18,277 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 04:54:18,307 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/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2025-02-08 04:54:18,344 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/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2025-02-08 04:54:18,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:54:18,380 INFO L204 MainTranslator]: Completed translation [2025-02-08 04:54:18,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18 WrapperNode [2025-02-08 04:54:18,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 04:54:18,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 04:54:18,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 04:54:18,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 04:54:18,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,443 INFO L138 Inliner]: procedures = 208, calls = 227, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1264 [2025-02-08 04:54:18,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 04:54:18,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 04:54:18,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 04:54:18,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 04:54:18,450 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,498 INFO L175 MemorySlicer]: Split 208 memory accesses to 3 slices as follows [2, 34, 172]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 4, 42]. [2025-02-08 04:54:18,498 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,518 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 04:54:18,535 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 04:54:18,535 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 04:54:18,535 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 04:54:18,536 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (1/1) ... [2025-02-08 04:54:18,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:54:18,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:54:18,563 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) [2025-02-08 04:54:18,573 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 [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 04:54:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 04:54:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 04:54:18,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 04:54:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 04:54:18,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 04:54:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 04:54:18,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 04:54:18,738 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 04:54:18,740 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 04:54:19,823 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L812: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 04:54:19,928 INFO L? ?]: Removed 301 outVars from TransFormulas that were not future-live. [2025-02-08 04:54:19,928 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 04:54:19,962 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 04:54:19,963 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-08 04:54:19,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:54:19 BoogieIcfgContainer [2025-02-08 04:54:19,963 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 04:54:19,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 04:54:19,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 04:54:19,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 04:54:19,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 04:54:17" (1/3) ... [2025-02-08 04:54:19,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577a17d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:54:19, skipping insertion in model container [2025-02-08 04:54:19,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:54:18" (2/3) ... [2025-02-08 04:54:19,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577a17d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:54:19, skipping insertion in model container [2025-02-08 04:54:19,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:54:19" (3/3) ... [2025-02-08 04:54:19,971 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test2-1.i [2025-02-08 04:54:19,985 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 04:54:19,986 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test2-1.i that has 5 procedures, 384 locations, 1 initial locations, 33 loop locations, and 2 error locations. [2025-02-08 04:54:20,037 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 04:54:20,048 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;@5f1e8ed9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 04:54:20,048 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 04:54:20,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 376 states, 362 states have (on average 1.6215469613259668) internal successors, (587), 369 states have internal predecessors, (587), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 04:54:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 04:54:20,060 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:20,060 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:20,060 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:20,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash -280710948, now seen corresponding path program 1 times [2025-02-08 04:54:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468298589] [2025-02-08 04:54:20,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:20,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 04:54:20,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 04:54:20,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:20,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:54:20,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:20,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468298589] [2025-02-08 04:54:20,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468298589] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:54:20,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:54:20,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:54:20,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065033353] [2025-02-08 04:54:20,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:54:20,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 04:54:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:20,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 04:54:20,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 04:54:20,191 INFO L87 Difference]: Start difference. First operand has 376 states, 362 states have (on average 1.6215469613259668) internal successors, (587), 369 states have internal predecessors, (587), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2025-02-08 04:54:20,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:20,299 INFO L93 Difference]: Finished difference Result 751 states and 1210 transitions. [2025-02-08 04:54:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 04:54:20,300 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2025-02-08 04:54:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:20,306 INFO L225 Difference]: With dead ends: 751 [2025-02-08 04:54:20,307 INFO L226 Difference]: Without dead ends: 369 [2025-02-08 04:54:20,310 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 [2025-02-08 04:54:20,312 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:20,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 506 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:54:20,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2025-02-08 04:54:20,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2025-02-08 04:54:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 358 states have (on average 1.4664804469273742) internal successors, (525), 363 states have internal predecessors, (525), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:54:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 536 transitions. [2025-02-08 04:54:20,354 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 536 transitions. Word has length 8 [2025-02-08 04:54:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:20,354 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 536 transitions. [2025-02-08 04:54:20,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2025-02-08 04:54:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 536 transitions. [2025-02-08 04:54:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 04:54:20,357 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:20,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:20,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 04:54:20,357 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:20,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:20,357 INFO L85 PathProgramCache]: Analyzing trace with hash -801187885, now seen corresponding path program 1 times [2025-02-08 04:54:20,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:20,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164695573] [2025-02-08 04:54:20,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:20,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:20,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-08 04:54:20,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 04:54:20,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:20,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:54:20,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:20,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164695573] [2025-02-08 04:54:20,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164695573] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:54:20,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:54:20,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 04:54:20,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555817779] [2025-02-08 04:54:20,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:54:20,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:54:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:20,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:54:20,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:54:20,746 INFO L87 Difference]: Start difference. First operand 369 states and 536 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-02-08 04:54:20,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:20,956 INFO L93 Difference]: Finished difference Result 899 states and 1313 transitions. [2025-02-08 04:54:20,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:54:20,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2025-02-08 04:54:20,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:20,959 INFO L225 Difference]: With dead ends: 899 [2025-02-08 04:54:20,959 INFO L226 Difference]: Without dead ends: 728 [2025-02-08 04:54:20,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:54:20,961 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 513 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:20,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 1417 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:54:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2025-02-08 04:54:20,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 371. [2025-02-08 04:54:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 360 states have (on average 1.4638888888888888) internal successors, (527), 365 states have internal predecessors, (527), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:54:20,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 538 transitions. [2025-02-08 04:54:20,977 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 538 transitions. Word has length 62 [2025-02-08 04:54:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:20,977 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 538 transitions. [2025-02-08 04:54:20,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-02-08 04:54:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 538 transitions. [2025-02-08 04:54:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-08 04:54:20,980 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:20,981 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:20,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 04:54:20,981 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:20,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1407658944, now seen corresponding path program 1 times [2025-02-08 04:54:20,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:20,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107193464] [2025-02-08 04:54:20,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:20,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:21,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-08 04:54:21,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 04:54:21,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:21,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:54:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:21,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107193464] [2025-02-08 04:54:21,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107193464] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:54:21,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:54:21,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:54:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880348919] [2025-02-08 04:54:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:54:21,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:54:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:21,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:54:21,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:54:21,301 INFO L87 Difference]: Start difference. First operand 371 states and 538 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2025-02-08 04:54:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:21,429 INFO L93 Difference]: Finished difference Result 697 states and 1007 transitions. [2025-02-08 04:54:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:54:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 137 [2025-02-08 04:54:21,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:21,431 INFO L225 Difference]: With dead ends: 697 [2025-02-08 04:54:21,431 INFO L226 Difference]: Without dead ends: 329 [2025-02-08 04:54:21,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:54:21,432 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 30 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:21,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1190 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:54:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2025-02-08 04:54:21,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2025-02-08 04:54:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 318 states have (on average 1.4150943396226414) internal successors, (450), 323 states have internal predecessors, (450), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:54:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2025-02-08 04:54:21,448 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 137 [2025-02-08 04:54:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:21,448 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2025-02-08 04:54:21,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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) [2025-02-08 04:54:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2025-02-08 04:54:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-08 04:54:21,452 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:21,452 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:21,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 04:54:21,452 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:21,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1887569530, now seen corresponding path program 1 times [2025-02-08 04:54:21,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:21,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529408146] [2025-02-08 04:54:21,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:21,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:21,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-08 04:54:21,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-08 04:54:21,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:21,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:54:21,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:21,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529408146] [2025-02-08 04:54:21,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529408146] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:54:21,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:54:21,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:54:21,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766202858] [2025-02-08 04:54:21,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:54:21,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 04:54:21,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:21,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 04:54:21,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 04:54:21,621 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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) [2025-02-08 04:54:21,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:21,739 INFO L93 Difference]: Finished difference Result 886 states and 1254 transitions. [2025-02-08 04:54:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 04:54:21,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 137 [2025-02-08 04:54:21,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:21,742 INFO L225 Difference]: With dead ends: 886 [2025-02-08 04:54:21,742 INFO L226 Difference]: Without dead ends: 560 [2025-02-08 04:54:21,743 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 [2025-02-08 04:54:21,743 INFO L435 NwaCegarLoop]: 595 mSDtfsCounter, 268 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:21,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1002 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:54:21,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-02-08 04:54:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 553. [2025-02-08 04:54:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 542 states have (on average 1.433579335793358) internal successors, (777), 547 states have internal predecessors, (777), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:54:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 788 transitions. [2025-02-08 04:54:21,758 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 788 transitions. Word has length 137 [2025-02-08 04:54:21,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:21,758 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 788 transitions. [2025-02-08 04:54:21,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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) [2025-02-08 04:54:21,759 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 788 transitions. [2025-02-08 04:54:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 04:54:21,760 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:21,761 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:21,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 04:54:21,761 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:21,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:21,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2040718685, now seen corresponding path program 1 times [2025-02-08 04:54:21,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:21,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000563934] [2025-02-08 04:54:21,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:21,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:21,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 04:54:21,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 04:54:21,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:21,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 04:54:22,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:22,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000563934] [2025-02-08 04:54:22,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000563934] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:54:22,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:54:22,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:54:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479575519] [2025-02-08 04:54:22,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:54:22,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:54:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:22,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:54:22,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:54:22,093 INFO L87 Difference]: Start difference. First operand 553 states and 788 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:54:22,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:22,204 INFO L93 Difference]: Finished difference Result 777 states and 1115 transitions. [2025-02-08 04:54:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:54:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2025-02-08 04:54:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:22,211 INFO L225 Difference]: With dead ends: 777 [2025-02-08 04:54:22,211 INFO L226 Difference]: Without dead ends: 469 [2025-02-08 04:54:22,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:54:22,212 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 30 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:22,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 968 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:54:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2025-02-08 04:54:22,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2025-02-08 04:54:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 458 states have (on average 1.3602620087336244) internal successors, (623), 463 states have internal predecessors, (623), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:54:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 634 transitions. [2025-02-08 04:54:22,222 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 634 transitions. Word has length 152 [2025-02-08 04:54:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:22,222 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 634 transitions. [2025-02-08 04:54:22,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:54:22,222 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 634 transitions. [2025-02-08 04:54:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 04:54:22,223 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:22,223 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:22,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 04:54:22,224 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:22,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:22,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1164895748, now seen corresponding path program 1 times [2025-02-08 04:54:22,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:22,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023290215] [2025-02-08 04:54:22,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:22,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:22,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 04:54:22,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 04:54:22,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:22,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:54:22,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023290215] [2025-02-08 04:54:22,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023290215] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:54:22,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:54:22,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 04:54:22,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530873775] [2025-02-08 04:54:22,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:54:22,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 04:54:22,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:22,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 04:54:22,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:54:22,444 INFO L87 Difference]: Start difference. First operand 469 states and 634 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:54:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:22,801 INFO L93 Difference]: Finished difference Result 932 states and 1258 transitions. [2025-02-08 04:54:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:54:22,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2025-02-08 04:54:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:22,804 INFO L225 Difference]: With dead ends: 932 [2025-02-08 04:54:22,804 INFO L226 Difference]: Without dead ends: 552 [2025-02-08 04:54:22,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:54:22,805 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 788 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:22,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 971 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:54:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-02-08 04:54:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 373. [2025-02-08 04:54:22,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 362 states have (on average 1.3480662983425415) internal successors, (488), 367 states have internal predecessors, (488), 8 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:54:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 499 transitions. [2025-02-08 04:54:22,815 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 499 transitions. Word has length 152 [2025-02-08 04:54:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:22,816 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 499 transitions. [2025-02-08 04:54:22,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:54:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 499 transitions. [2025-02-08 04:54:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-08 04:54:22,817 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:22,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:22,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 04:54:22,817 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:22,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash -693754418, now seen corresponding path program 1 times [2025-02-08 04:54:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:22,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998056723] [2025-02-08 04:54:22,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:22,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:22,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-08 04:54:22,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-08 04:54:22,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:22,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:54:23,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998056723] [2025-02-08 04:54:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998056723] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:54:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437956472] [2025-02-08 04:54:23,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:23,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:54:23,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:54:23,416 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) [2025-02-08 04:54:23,418 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 [2025-02-08 04:54:23,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-08 04:54:23,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-08 04:54:23,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:23,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:23,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 04:54:23,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:54:23,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 04:54:23,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-02-08 04:54:23,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 04:54:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:54:23,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:54:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:54:24,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437956472] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:54:24,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:54:24,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2025-02-08 04:54:24,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829755038] [2025-02-08 04:54:24,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:54:24,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 04:54:24,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:24,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 04:54:24,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-02-08 04:54:24,075 INFO L87 Difference]: Start difference. First operand 373 states and 499 transitions. Second operand has 11 states, 11 states have (on average 29.181818181818183) internal successors, (321), 11 states have internal predecessors, (321), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:54:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:24,435 INFO L93 Difference]: Finished difference Result 1236 states and 1660 transitions. [2025-02-08 04:54:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 04:54:24,436 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 29.181818181818183) internal successors, (321), 11 states have internal predecessors, (321), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 162 [2025-02-08 04:54:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:24,440 INFO L225 Difference]: With dead ends: 1236 [2025-02-08 04:54:24,440 INFO L226 Difference]: Without dead ends: 1107 [2025-02-08 04:54:24,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 317 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-02-08 04:54:24,442 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 1539 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:24,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 3023 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:54:24,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2025-02-08 04:54:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 715. [2025-02-08 04:54:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 700 states have (on average 1.3428571428571427) internal successors, (940), 705 states have internal predecessors, (940), 11 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 04:54:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 957 transitions. [2025-02-08 04:54:24,468 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 957 transitions. Word has length 162 [2025-02-08 04:54:24,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:24,469 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 957 transitions. [2025-02-08 04:54:24,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.181818181818183) internal successors, (321), 11 states have internal predecessors, (321), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:54:24,470 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 957 transitions. [2025-02-08 04:54:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2025-02-08 04:54:24,474 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:24,474 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:24,484 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 [2025-02-08 04:54:24,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:54:24,675 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:24,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:24,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1392408181, now seen corresponding path program 1 times [2025-02-08 04:54:24,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:24,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580206668] [2025-02-08 04:54:24,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:24,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:24,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes. [2025-02-08 04:54:24,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements. [2025-02-08 04:54:24,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:24,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:54:27,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580206668] [2025-02-08 04:54:27,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580206668] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:54:27,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979364971] [2025-02-08 04:54:27,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:27,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:54:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:54:27,547 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) [2025-02-08 04:54:27,548 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 [2025-02-08 04:54:27,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes. [2025-02-08 04:54:28,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements. [2025-02-08 04:54:28,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:28,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:28,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 04:54:28,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:54:28,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 04:54:28,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-02-08 04:54:28,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-08 04:54:28,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-08 04:54:28,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-02-08 04:54:28,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 04:54:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:54:28,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:54:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:54:29,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979364971] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:54:29,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:54:29,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2025-02-08 04:54:29,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135467387] [2025-02-08 04:54:29,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:54:29,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 04:54:29,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:29,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 04:54:29,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2025-02-08 04:54:29,084 INFO L87 Difference]: Start difference. First operand 715 states and 957 transitions. Second operand has 20 states, 20 states have (on average 38.85) internal successors, (777), 20 states have internal predecessors, (777), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:54:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:29,755 INFO L93 Difference]: Finished difference Result 2460 states and 3313 transitions. [2025-02-08 04:54:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 04:54:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 38.85) internal successors, (777), 20 states have internal predecessors, (777), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 387 [2025-02-08 04:54:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:29,763 INFO L225 Difference]: With dead ends: 2460 [2025-02-08 04:54:29,763 INFO L226 Difference]: Without dead ends: 2331 [2025-02-08 04:54:29,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 765 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2025-02-08 04:54:29,765 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 3714 mSDsluCounter, 3922 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3724 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:29,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3724 Valid, 4293 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 04:54:29,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2025-02-08 04:54:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 1567. [2025-02-08 04:54:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1546 states have (on average 1.3415265200517466) internal successors, (2074), 1551 states have internal predecessors, (2074), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 04:54:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2103 transitions. [2025-02-08 04:54:29,807 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2103 transitions. Word has length 387 [2025-02-08 04:54:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:29,807 INFO L471 AbstractCegarLoop]: Abstraction has 1567 states and 2103 transitions. [2025-02-08 04:54:29,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 38.85) internal successors, (777), 20 states have internal predecessors, (777), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:54:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2103 transitions. [2025-02-08 04:54:29,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2025-02-08 04:54:29,819 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:29,820 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:29,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 04:54:30,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:54:30,024 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:30,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:30,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1568015979, now seen corresponding path program 2 times [2025-02-08 04:54:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:30,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844993488] [2025-02-08 04:54:30,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:54:30,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:30,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 837 statements into 2 equivalence classes. [2025-02-08 04:54:30,285 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 72 of 837 statements. [2025-02-08 04:54:30,286 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 04:54:30,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-08 04:54:30,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:30,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844993488] [2025-02-08 04:54:30,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844993488] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:54:30,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:54:30,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 04:54:30,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029611997] [2025-02-08 04:54:30,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:54:30,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 04:54:30,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:30,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 04:54:30,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:54:30,411 INFO L87 Difference]: Start difference. First operand 1567 states and 2103 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:54:30,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:30,724 INFO L93 Difference]: Finished difference Result 1700 states and 2282 transitions. [2025-02-08 04:54:30,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:54:30,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 837 [2025-02-08 04:54:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:30,730 INFO L225 Difference]: With dead ends: 1700 [2025-02-08 04:54:30,731 INFO L226 Difference]: Without dead ends: 1572 [2025-02-08 04:54:30,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:54:30,732 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 14 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:30,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1401 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:54:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2025-02-08 04:54:30,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1569. [2025-02-08 04:54:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1548 states have (on average 1.3410852713178294) internal successors, (2076), 1553 states have internal predecessors, (2076), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 04:54:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2105 transitions. [2025-02-08 04:54:30,771 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2105 transitions. Word has length 837 [2025-02-08 04:54:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:30,772 INFO L471 AbstractCegarLoop]: Abstraction has 1569 states and 2105 transitions. [2025-02-08 04:54:30,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:54:30,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2105 transitions. [2025-02-08 04:54:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2025-02-08 04:54:30,785 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:30,786 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:30,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 04:54:30,786 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:30,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:30,787 INFO L85 PathProgramCache]: Analyzing trace with hash -501974493, now seen corresponding path program 1 times [2025-02-08 04:54:30,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:30,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274527607] [2025-02-08 04:54:30,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:30,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 838 statements into 1 equivalence classes. [2025-02-08 04:54:31,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 838 of 838 statements. [2025-02-08 04:54:31,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:54:31,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:54:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-08 04:54:32,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:54:32,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274527607] [2025-02-08 04:54:32,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274527607] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:54:32,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:54:32,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 04:54:32,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167643483] [2025-02-08 04:54:32,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:54:32,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:54:32,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:54:32,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:54:32,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:54:32,284 INFO L87 Difference]: Start difference. First operand 1569 states and 2105 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:54:32,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:54:32,593 INFO L93 Difference]: Finished difference Result 1704 states and 2286 transitions. [2025-02-08 04:54:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:54:32,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 838 [2025-02-08 04:54:32,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:54:32,598 INFO L225 Difference]: With dead ends: 1704 [2025-02-08 04:54:32,599 INFO L226 Difference]: Without dead ends: 1574 [2025-02-08 04:54:32,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:54:32,600 INFO L435 NwaCegarLoop]: 328 mSDtfsCounter, 15 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:54:32,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1682 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:54:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2025-02-08 04:54:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1573. [2025-02-08 04:54:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1552 states have (on average 1.3408505154639174) internal successors, (2081), 1557 states have internal predecessors, (2081), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 04:54:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2110 transitions. [2025-02-08 04:54:32,633 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2110 transitions. Word has length 838 [2025-02-08 04:54:32,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:54:32,633 INFO L471 AbstractCegarLoop]: Abstraction has 1573 states and 2110 transitions. [2025-02-08 04:54:32,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:54:32,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2110 transitions. [2025-02-08 04:54:32,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2025-02-08 04:54:32,638 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:54:32,639 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:54:32,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 04:54:32,639 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:54:32,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:54:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash 596821980, now seen corresponding path program 1 times [2025-02-08 04:54:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:54:32,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81680247] [2025-02-08 04:54:32,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:54:32,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:54:32,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 838 statements into 1 equivalence classes.