./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b46aca8db2cbcc86d5081568217304f7c2d4c7c32814797814cc0c73772f5e13 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 05:14:51,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 05:14:52,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 05:14:52,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 05:14:52,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 05:14:52,040 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 05:14:52,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 05:14:52,040 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 05:14:52,041 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 05:14:52,041 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 05:14:52,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 05:14:52,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 05:14:52,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 05:14:52,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 05:14:52,042 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 05:14:52,042 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 05:14:52,043 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 05:14:52,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:14:52,044 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:14:52,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 05:14:52,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 05:14:52,045 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 05:14:52,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 05:14:52,045 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 -> b46aca8db2cbcc86d5081568217304f7c2d4c7c32814797814cc0c73772f5e13 [2025-01-09 05:14:52,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 05:14:52,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 05:14:52,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 05:14:52,285 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 05:14:52,287 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 05:14:52,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c [2025-01-09 05:14:53,478 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bfbc1233/65e2c80714ef40bdb4a8a0ccab04fd5b/FLAG1d9b00f6e [2025-01-09 05:14:54,067 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 05:14:54,068 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c [2025-01-09 05:14:54,108 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bfbc1233/65e2c80714ef40bdb4a8a0ccab04fd5b/FLAG1d9b00f6e [2025-01-09 05:14:54,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bfbc1233/65e2c80714ef40bdb4a8a0ccab04fd5b [2025-01-09 05:14:54,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 05:14:54,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 05:14:54,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 05:14:54,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 05:14:54,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 05:14:54,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 05:14:54" (1/1) ... [2025-01-09 05:14:54,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1998856b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:54, skipping insertion in model container [2025-01-09 05:14:54,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 05:14:54" (1/1) ... [2025-01-09 05:14:54,256 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 05:14:55,363 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/combinations/Problem05_label41+token_ring.02.cil-1.c[376251,376264] [2025-01-09 05:14:55,394 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/combinations/Problem05_label41+token_ring.02.cil-1.c[383339,383352] [2025-01-09 05:14:55,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 05:14:55,539 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 05:14:56,029 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/combinations/Problem05_label41+token_ring.02.cil-1.c[376251,376264] [2025-01-09 05:14:56,035 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/combinations/Problem05_label41+token_ring.02.cil-1.c[383339,383352] [2025-01-09 05:14:56,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 05:14:56,089 INFO L204 MainTranslator]: Completed translation [2025-01-09 05:14:56,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56 WrapperNode [2025-01-09 05:14:56,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 05:14:56,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 05:14:56,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 05:14:56,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 05:14:56,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,159 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,472 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12615 [2025-01-09 05:14:56,472 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 05:14:56,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 05:14:56,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 05:14:56,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 05:14:56,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,603 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 05:14:56,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,735 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,892 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 05:14:56,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 05:14:56,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 05:14:56,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 05:14:56,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (1/1) ... [2025-01-09 05:14:56,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:14:56,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:14:56,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 05:14:56,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 05:14:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 05:14:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-01-09 05:14:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-01-09 05:14:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-01-09 05:14:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-01-09 05:14:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-01-09 05:14:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-01-09 05:14:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-01-09 05:14:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-01-09 05:14:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-01-09 05:14:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-01-09 05:14:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 05:14:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-01-09 05:14:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-01-09 05:14:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 05:14:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 05:14:57,091 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 05:14:57,092 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 05:15:03,579 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2025-01-09 05:15:03,583 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 05:15:03,671 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 05:15:03,672 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2025-01-09 05:15:03,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 05:15:03 BoogieIcfgContainer [2025-01-09 05:15:03,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 05:15:03,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 05:15:03,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 05:15:03,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 05:15:03,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 05:14:54" (1/3) ... [2025-01-09 05:15:03,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23111c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 05:15:03, skipping insertion in model container [2025-01-09 05:15:03,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:14:56" (2/3) ... [2025-01-09 05:15:03,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23111c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 05:15:03, skipping insertion in model container [2025-01-09 05:15:03,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 05:15:03" (3/3) ... [2025-01-09 05:15:03,693 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.02.cil-1.c [2025-01-09 05:15:03,711 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 05:15:03,714 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label41+token_ring.02.cil-1.c that has 7 procedures, 2313 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-01-09 05:15:03,887 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 05:15:03,908 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;@15e05921, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 05:15:03,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 05:15:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 2313 states, 2289 states have (on average 1.854521625163827) internal successors, (4245), 2291 states have internal predecessors, (4245), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-01-09 05:15:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:15:03,944 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:03,944 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, 1, 1, 1, 1] [2025-01-09 05:15:03,945 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:03,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 96040820, now seen corresponding path program 1 times [2025-01-09 05:15:03,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:03,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536284398] [2025-01-09 05:15:03,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:04,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:15:04,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:15:04,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:04,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:15:04,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:04,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536284398] [2025-01-09 05:15:04,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536284398] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:04,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:15:04,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 05:15:04,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261725069] [2025-01-09 05:15:04,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:04,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 05:15:04,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:04,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 05:15:04,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 05:15:04,346 INFO L87 Difference]: Start difference. First operand has 2313 states, 2289 states have (on average 1.854521625163827) internal successors, (4245), 2291 states have internal predecessors, (4245), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:04,757 INFO L93 Difference]: Finished difference Result 4742 states and 8733 transitions. [2025-01-09 05:15:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 05:15:04,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:15:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:04,783 INFO L225 Difference]: With dead ends: 4742 [2025-01-09 05:15:04,783 INFO L226 Difference]: Without dead ends: 2369 [2025-01-09 05:15:04,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:04,797 INFO L435 NwaCegarLoop]: 4179 mSDtfsCounter, 4324 mSDsluCounter, 8417 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 12596 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:04,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4334 Valid, 12596 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 05:15:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2025-01-09 05:15:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2360. [2025-01-09 05:15:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2318 states have (on average 1.8347713546160482) internal successors, (4253), 2321 states have internal predecessors, (4253), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2025-01-09 05:15:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 4308 transitions. [2025-01-09 05:15:04,943 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 4308 transitions. Word has length 66 [2025-01-09 05:15:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:04,944 INFO L471 AbstractCegarLoop]: Abstraction has 2360 states and 4308 transitions. [2025-01-09 05:15:04,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 4308 transitions. [2025-01-09 05:15:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:15:04,948 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:04,948 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, 1, 1, 1, 1] [2025-01-09 05:15:04,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 05:15:04,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:04,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1265496840, now seen corresponding path program 1 times [2025-01-09 05:15:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643899814] [2025-01-09 05:15:04,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:04,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:04,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:15:04,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:15:04,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:04,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:15:05,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:05,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643899814] [2025-01-09 05:15:05,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643899814] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:05,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:15:05,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:15:05,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355535502] [2025-01-09 05:15:05,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:05,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:15:05,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:05,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:15:05,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:05,143 INFO L87 Difference]: Start difference. First operand 2360 states and 4308 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:05,563 INFO L93 Difference]: Finished difference Result 2729 states and 4854 transitions. [2025-01-09 05:15:05,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:15:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:15:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:05,574 INFO L225 Difference]: With dead ends: 2729 [2025-01-09 05:15:05,574 INFO L226 Difference]: Without dead ends: 2500 [2025-01-09 05:15:05,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:15:05,577 INFO L435 NwaCegarLoop]: 4183 mSDtfsCounter, 4247 mSDsluCounter, 12513 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 16696 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:05,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 16696 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 05:15:05,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2025-01-09 05:15:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2467. [2025-01-09 05:15:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2407 states have (on average 1.8209389281262982) internal successors, (4383), 2411 states have internal predecessors, (4383), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2025-01-09 05:15:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4463 transitions. [2025-01-09 05:15:05,637 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4463 transitions. Word has length 66 [2025-01-09 05:15:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:05,637 INFO L471 AbstractCegarLoop]: Abstraction has 2467 states and 4463 transitions. [2025-01-09 05:15:05,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4463 transitions. [2025-01-09 05:15:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:15:05,639 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:05,639 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, 1, 1, 1, 1] [2025-01-09 05:15:05,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 05:15:05,640 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:05,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash 272843190, now seen corresponding path program 1 times [2025-01-09 05:15:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654421114] [2025-01-09 05:15:05,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:05,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:05,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:15:05,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:15:05,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:05,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:15:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654421114] [2025-01-09 05:15:05,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654421114] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:05,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:15:05,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:15:05,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457100393] [2025-01-09 05:15:05,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:05,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:15:05,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:05,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:15:05,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:05,770 INFO L87 Difference]: Start difference. First operand 2467 states and 4463 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:06,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:06,160 INFO L93 Difference]: Finished difference Result 3060 states and 5338 transitions. [2025-01-09 05:15:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:15:06,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:15:06,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:06,172 INFO L225 Difference]: With dead ends: 3060 [2025-01-09 05:15:06,172 INFO L226 Difference]: Without dead ends: 2724 [2025-01-09 05:15:06,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:15:06,174 INFO L435 NwaCegarLoop]: 4100 mSDtfsCounter, 4254 mSDsluCounter, 12329 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 16429 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:06,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 16429 Invalid, 373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 05:15:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2025-01-09 05:15:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2690. [2025-01-09 05:15:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2592 states have (on average 1.7955246913580247) internal successors, (4654), 2600 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 36 states have return successors, (76), 63 states have call predecessors, (76), 60 states have call successors, (76) [2025-01-09 05:15:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 4790 transitions. [2025-01-09 05:15:06,256 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 4790 transitions. Word has length 66 [2025-01-09 05:15:06,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:06,256 INFO L471 AbstractCegarLoop]: Abstraction has 2690 states and 4790 transitions. [2025-01-09 05:15:06,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:06,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 4790 transitions. [2025-01-09 05:15:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:15:06,260 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:06,260 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, 1, 1, 1, 1] [2025-01-09 05:15:06,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 05:15:06,260 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:06,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:06,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1755742920, now seen corresponding path program 1 times [2025-01-09 05:15:06,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:06,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995458336] [2025-01-09 05:15:06,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:06,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:06,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:15:06,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:15:06,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:06,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:15:06,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995458336] [2025-01-09 05:15:06,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995458336] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:06,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:15:06,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:15:06,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342588153] [2025-01-09 05:15:06,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:06,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:15:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:06,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:15:06,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:06,370 INFO L87 Difference]: Start difference. First operand 2690 states and 4790 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:06,757 INFO L93 Difference]: Finished difference Result 3781 states and 6404 transitions. [2025-01-09 05:15:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:15:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:15:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:06,771 INFO L225 Difference]: With dead ends: 3781 [2025-01-09 05:15:06,771 INFO L226 Difference]: Without dead ends: 3222 [2025-01-09 05:15:06,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:15:06,775 INFO L435 NwaCegarLoop]: 4169 mSDtfsCounter, 4246 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 16637 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:06,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4255 Valid, 16637 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 05:15:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2025-01-09 05:15:06,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3120. [2025-01-09 05:15:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 2944 states have (on average 1.7540760869565217) internal successors, (5164), 2966 states have internal predecessors, (5164), 100 states have call successors, (100), 54 states have call predecessors, (100), 74 states have return successors, (164), 107 states have call predecessors, (164), 100 states have call successors, (164) [2025-01-09 05:15:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 5428 transitions. [2025-01-09 05:15:06,869 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 5428 transitions. Word has length 66 [2025-01-09 05:15:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:06,869 INFO L471 AbstractCegarLoop]: Abstraction has 3120 states and 5428 transitions. [2025-01-09 05:15:06,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:06,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 5428 transitions. [2025-01-09 05:15:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:15:06,871 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:06,871 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, 1, 1, 1, 1] [2025-01-09 05:15:06,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 05:15:06,871 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:06,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:06,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1771261638, now seen corresponding path program 1 times [2025-01-09 05:15:06,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:06,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138639081] [2025-01-09 05:15:06,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:06,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:15:06,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:15:06,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:06,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:15:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138639081] [2025-01-09 05:15:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138639081] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:06,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:15:06,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:15:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044306256] [2025-01-09 05:15:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:06,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:15:06,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:06,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:15:06,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:06,960 INFO L87 Difference]: Start difference. First operand 3120 states and 5428 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:07,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:07,416 INFO L93 Difference]: Finished difference Result 5095 states and 8400 transitions. [2025-01-09 05:15:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:15:07,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:15:07,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:07,435 INFO L225 Difference]: With dead ends: 5095 [2025-01-09 05:15:07,435 INFO L226 Difference]: Without dead ends: 4106 [2025-01-09 05:15:07,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:15:07,441 INFO L435 NwaCegarLoop]: 4167 mSDtfsCounter, 4243 mSDsluCounter, 12462 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 16629 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:07,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 16629 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 05:15:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2025-01-09 05:15:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4011. [2025-01-09 05:15:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4011 states, 3665 states have (on average 1.6916780354706684) internal successors, (6200), 3733 states have internal predecessors, (6200), 176 states have call successors, (176), 102 states have call predecessors, (176), 168 states have return successors, (432), 191 states have call predecessors, (432), 176 states have call successors, (432) [2025-01-09 05:15:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 6808 transitions. [2025-01-09 05:15:07,662 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 6808 transitions. Word has length 66 [2025-01-09 05:15:07,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:07,662 INFO L471 AbstractCegarLoop]: Abstraction has 4011 states and 6808 transitions. [2025-01-09 05:15:07,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 6808 transitions. [2025-01-09 05:15:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:15:07,667 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:07,668 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, 1, 1, 1, 1] [2025-01-09 05:15:07,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 05:15:07,668 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:07,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash 167900408, now seen corresponding path program 1 times [2025-01-09 05:15:07,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:07,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603782930] [2025-01-09 05:15:07,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:07,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:15:07,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:15:07,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:07,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 05:15:07,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:07,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603782930] [2025-01-09 05:15:07,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603782930] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:07,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:15:07,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 05:15:07,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437028596] [2025-01-09 05:15:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:07,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 05:15:07,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:07,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 05:15:07,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 05:15:07,733 INFO L87 Difference]: Start difference. First operand 4011 states and 6808 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:07,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:07,939 INFO L93 Difference]: Finished difference Result 6910 states and 11255 transitions. [2025-01-09 05:15:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 05:15:07,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-01-09 05:15:07,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:07,964 INFO L225 Difference]: With dead ends: 6910 [2025-01-09 05:15:07,965 INFO L226 Difference]: Without dead ends: 5031 [2025-01-09 05:15:07,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 05:15:07,974 INFO L435 NwaCegarLoop]: 4287 mSDtfsCounter, 4261 mSDsluCounter, 4228 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 8515 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:07,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4261 Valid, 8515 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 05:15:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2025-01-09 05:15:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4950. [2025-01-09 05:15:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 4434 states have (on average 1.6380243572395128) internal successors, (7263), 4531 states have internal predecessors, (7263), 272 states have call successors, (272), 156 states have call predecessors, (272), 242 states have return successors, (585), 278 states have call predecessors, (585), 272 states have call successors, (585) [2025-01-09 05:15:08,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 8120 transitions. [2025-01-09 05:15:08,153 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 8120 transitions. Word has length 66 [2025-01-09 05:15:08,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:08,153 INFO L471 AbstractCegarLoop]: Abstraction has 4950 states and 8120 transitions. [2025-01-09 05:15:08,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 05:15:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 8120 transitions. [2025-01-09 05:15:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 05:15:08,161 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:08,161 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:08,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 05:15:08,161 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:08,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash 812456580, now seen corresponding path program 1 times [2025-01-09 05:15:08,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:08,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544743446] [2025-01-09 05:15:08,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:08,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:08,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:15:08,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:15:08,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:08,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:08,218 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 05:15:08,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:08,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544743446] [2025-01-09 05:15:08,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544743446] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:08,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122268978] [2025-01-09 05:15:08,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:08,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:08,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:08,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:08,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 05:15:08,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:15:08,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:15:08,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:08,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:08,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:15:08,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 05:15:08,394 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:08,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122268978] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:08,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:08,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-01-09 05:15:08,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681626836] [2025-01-09 05:15:08,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:08,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:08,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:08,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:08,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:08,395 INFO L87 Difference]: Start difference. First operand 4950 states and 8120 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 05:15:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:08,582 INFO L93 Difference]: Finished difference Result 10443 states and 16282 transitions. [2025-01-09 05:15:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:08,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 107 [2025-01-09 05:15:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:08,621 INFO L225 Difference]: With dead ends: 10443 [2025-01-09 05:15:08,622 INFO L226 Difference]: Without dead ends: 7625 [2025-01-09 05:15:08,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:08,635 INFO L435 NwaCegarLoop]: 4136 mSDtfsCounter, 4095 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:08,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4292 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:08,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2025-01-09 05:15:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7597. [2025-01-09 05:15:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7597 states, 6605 states have (on average 1.5660862982588948) internal successors, (10344), 6797 states have internal predecessors, (10344), 510 states have call successors, (510), 308 states have call predecessors, (510), 480 states have return successors, (1121), 507 states have call predecessors, (1121), 510 states have call successors, (1121) [2025-01-09 05:15:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7597 states to 7597 states and 11975 transitions. [2025-01-09 05:15:08,970 INFO L78 Accepts]: Start accepts. Automaton has 7597 states and 11975 transitions. Word has length 107 [2025-01-09 05:15:08,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:08,970 INFO L471 AbstractCegarLoop]: Abstraction has 7597 states and 11975 transitions. [2025-01-09 05:15:08,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-09 05:15:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7597 states and 11975 transitions. [2025-01-09 05:15:08,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 05:15:08,980 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:08,980 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:08,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 05:15:09,184 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 [2025-01-09 05:15:09,184 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:09,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 18602050, now seen corresponding path program 1 times [2025-01-09 05:15:09,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:09,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043157124] [2025-01-09 05:15:09,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:09,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:15:09,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:15:09,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:09,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 05:15:09,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:09,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043157124] [2025-01-09 05:15:09,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043157124] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:09,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461742270] [2025-01-09 05:15:09,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:09,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:09,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:09,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 05:15:09,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:15:09,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:15:09,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:09,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:09,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:15:09,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 05:15:09,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:09,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461742270] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:09,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:09,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:15:09,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700726619] [2025-01-09 05:15:09,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:09,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:09,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:09,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:09,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:09,370 INFO L87 Difference]: Start difference. First operand 7597 states and 11975 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 05:15:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:09,737 INFO L93 Difference]: Finished difference Result 18239 states and 27877 transitions. [2025-01-09 05:15:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2025-01-09 05:15:09,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:09,816 INFO L225 Difference]: With dead ends: 18239 [2025-01-09 05:15:09,816 INFO L226 Difference]: Without dead ends: 12775 [2025-01-09 05:15:09,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:09,852 INFO L435 NwaCegarLoop]: 4294 mSDtfsCounter, 153 mSDsluCounter, 4134 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 8428 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:09,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 8428 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:09,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2025-01-09 05:15:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12775. [2025-01-09 05:15:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12775 states, 10846 states have (on average 1.5038723953531257) internal successors, (16311), 11211 states have internal predecessors, (16311), 975 states have call successors, (975), 608 states have call predecessors, (975), 952 states have return successors, (2348), 987 states have call predecessors, (2348), 975 states have call successors, (2348) [2025-01-09 05:15:10,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12775 states to 12775 states and 19634 transitions. [2025-01-09 05:15:10,454 INFO L78 Accepts]: Start accepts. Automaton has 12775 states and 19634 transitions. Word has length 107 [2025-01-09 05:15:10,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:10,455 INFO L471 AbstractCegarLoop]: Abstraction has 12775 states and 19634 transitions. [2025-01-09 05:15:10,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 05:15:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 12775 states and 19634 transitions. [2025-01-09 05:15:10,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-01-09 05:15:10,487 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:10,487 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:10,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 05:15:10,692 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 [2025-01-09 05:15:10,692 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:10,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash 67629329, now seen corresponding path program 1 times [2025-01-09 05:15:10,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:10,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244133962] [2025-01-09 05:15:10,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:10,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:10,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 05:15:10,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 05:15:10,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:10,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-01-09 05:15:10,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:10,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244133962] [2025-01-09 05:15:10,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244133962] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:10,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063163179] [2025-01-09 05:15:10,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:10,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:10,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:10,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:10,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 05:15:10,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 05:15:10,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 05:15:10,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:10,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:10,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:15:10,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 05:15:10,980 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:10,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063163179] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:10,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:10,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-01-09 05:15:10,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752076962] [2025-01-09 05:15:10,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:10,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:10,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:10,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:10,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:10,982 INFO L87 Difference]: Start difference. First operand 12775 states and 19634 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 05:15:11,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:11,817 INFO L93 Difference]: Finished difference Result 33619 states and 50647 transitions. [2025-01-09 05:15:11,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:11,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 139 [2025-01-09 05:15:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:11,924 INFO L225 Difference]: With dead ends: 33619 [2025-01-09 05:15:11,924 INFO L226 Difference]: Without dead ends: 22981 [2025-01-09 05:15:11,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:11,967 INFO L435 NwaCegarLoop]: 4144 mSDtfsCounter, 4055 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4055 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:11,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4055 Valid, 4300 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 05:15:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22981 states. [2025-01-09 05:15:12,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22981 to 22875. [2025-01-09 05:15:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22875 states, 19118 states have (on average 1.4589915263102835) internal successors, (27893), 19845 states have internal predecessors, (27893), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1886 states have return successors, (4542), 1863 states have call predecessors, (4542), 1869 states have call successors, (4542) [2025-01-09 05:15:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22875 states to 22875 states and 34304 transitions. [2025-01-09 05:15:13,044 INFO L78 Accepts]: Start accepts. Automaton has 22875 states and 34304 transitions. Word has length 139 [2025-01-09 05:15:13,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:13,045 INFO L471 AbstractCegarLoop]: Abstraction has 22875 states and 34304 transitions. [2025-01-09 05:15:13,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-01-09 05:15:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 22875 states and 34304 transitions. [2025-01-09 05:15:13,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:15:13,110 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:13,110 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:13,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 05:15:13,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:13,312 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:13,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1591654586, now seen corresponding path program 1 times [2025-01-09 05:15:13,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:13,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139638225] [2025-01-09 05:15:13,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:13,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:13,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:15:13,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:15:13,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:13,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-09 05:15:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139638225] [2025-01-09 05:15:13,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139638225] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690844379] [2025-01-09 05:15:13,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:13,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:13,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:13,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:13,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 05:15:13,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:15:13,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:15:13,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:13,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:13,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:15:13,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 05:15:13,579 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:13,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690844379] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:13,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:13,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:15:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979340007] [2025-01-09 05:15:13,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:13,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:13,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:13,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:13,581 INFO L87 Difference]: Start difference. First operand 22875 states and 34304 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 05:15:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:14,203 INFO L93 Difference]: Finished difference Result 46049 states and 70708 transitions. [2025-01-09 05:15:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:14,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 155 [2025-01-09 05:15:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:14,301 INFO L225 Difference]: With dead ends: 46049 [2025-01-09 05:15:14,302 INFO L226 Difference]: Without dead ends: 25309 [2025-01-09 05:15:14,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:14,359 INFO L435 NwaCegarLoop]: 4133 mSDtfsCounter, 4074 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:14,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4074 Valid, 4167 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25309 states. [2025-01-09 05:15:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25309 to 25309. [2025-01-09 05:15:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25309 states, 21340 states have (on average 1.405763823805061) internal successors, (29999), 22067 states have internal predecessors, (29999), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 2044 states have return successors, (4610), 1917 states have call predecessors, (4610), 1923 states have call successors, (4610) [2025-01-09 05:15:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25309 states to 25309 states and 36532 transitions. [2025-01-09 05:15:15,370 INFO L78 Accepts]: Start accepts. Automaton has 25309 states and 36532 transitions. Word has length 155 [2025-01-09 05:15:15,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:15,370 INFO L471 AbstractCegarLoop]: Abstraction has 25309 states and 36532 transitions. [2025-01-09 05:15:15,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 05:15:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 25309 states and 36532 transitions. [2025-01-09 05:15:15,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:15:15,427 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:15,429 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:15,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 05:15:15,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-09 05:15:15,633 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:15,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:15,634 INFO L85 PathProgramCache]: Analyzing trace with hash 661628733, now seen corresponding path program 1 times [2025-01-09 05:15:15,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:15,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288425970] [2025-01-09 05:15:15,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:15,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:15,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:15:15,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:15:15,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:15,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-09 05:15:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:15,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288425970] [2025-01-09 05:15:15,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288425970] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015149649] [2025-01-09 05:15:15,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:15,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:15,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:15,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:15,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 05:15:15,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:15:15,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:15:15,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:15,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:15,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:15:15,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 05:15:15,901 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:15,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015149649] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:15,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:15,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:15:15,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076328837] [2025-01-09 05:15:15,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:15,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:15,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:15,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:15,903 INFO L87 Difference]: Start difference. First operand 25309 states and 36532 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 05:15:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:16,840 INFO L93 Difference]: Finished difference Result 40779 states and 58823 transitions. [2025-01-09 05:15:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 155 [2025-01-09 05:15:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:16,940 INFO L225 Difference]: With dead ends: 40779 [2025-01-09 05:15:16,940 INFO L226 Difference]: Without dead ends: 21961 [2025-01-09 05:15:16,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:16,991 INFO L435 NwaCegarLoop]: 4132 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:16,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4165 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21961 states. [2025-01-09 05:15:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21961 to 16593. [2025-01-09 05:15:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16593 states, 14324 states have (on average 1.3917201898910918) internal successors, (19935), 14557 states have internal predecessors, (19935), 1183 states have call successors, (1183), 876 states have call predecessors, (1183), 1084 states have return successors, (1942), 1175 states have call predecessors, (1942), 1183 states have call successors, (1942) [2025-01-09 05:15:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16593 states to 16593 states and 23060 transitions. [2025-01-09 05:15:17,809 INFO L78 Accepts]: Start accepts. Automaton has 16593 states and 23060 transitions. Word has length 155 [2025-01-09 05:15:17,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:17,810 INFO L471 AbstractCegarLoop]: Abstraction has 16593 states and 23060 transitions. [2025-01-09 05:15:17,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-01-09 05:15:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 16593 states and 23060 transitions. [2025-01-09 05:15:17,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:15:17,828 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:17,828 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:17,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 05:15:18,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 05:15:18,029 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:18,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash -764266273, now seen corresponding path program 1 times [2025-01-09 05:15:18,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:18,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853012603] [2025-01-09 05:15:18,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:18,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:18,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:15:18,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:15:18,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:18,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-09 05:15:18,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:18,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853012603] [2025-01-09 05:15:18,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853012603] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:18,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613339737] [2025-01-09 05:15:18,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:18,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:18,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:18,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 05:15:18,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:15:18,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:15:18,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:18,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:18,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:15:18,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 05:15:18,252 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:18,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613339737] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:18,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:18,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:15:18,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241291720] [2025-01-09 05:15:18,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:18,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:18,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:18,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:18,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:18,253 INFO L87 Difference]: Start difference. First operand 16593 states and 23060 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:15:18,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:18,659 INFO L93 Difference]: Finished difference Result 27553 states and 37425 transitions. [2025-01-09 05:15:18,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:18,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 155 [2025-01-09 05:15:18,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:18,727 INFO L225 Difference]: With dead ends: 27553 [2025-01-09 05:15:18,727 INFO L226 Difference]: Without dead ends: 17527 [2025-01-09 05:15:18,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:18,751 INFO L435 NwaCegarLoop]: 4166 mSDtfsCounter, 4083 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 4326 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:18,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 4326 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17527 states. [2025-01-09 05:15:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17527 to 17417. [2025-01-09 05:15:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17417 states, 15104 states have (on average 1.3684454449152543) internal successors, (20669), 15337 states have internal predecessors, (20669), 1183 states have call successors, (1183), 920 states have call predecessors, (1183), 1128 states have return successors, (1986), 1175 states have call predecessors, (1986), 1183 states have call successors, (1986) [2025-01-09 05:15:19,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 23838 transitions. [2025-01-09 05:15:19,394 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 23838 transitions. Word has length 155 [2025-01-09 05:15:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:19,394 INFO L471 AbstractCegarLoop]: Abstraction has 17417 states and 23838 transitions. [2025-01-09 05:15:19,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:15:19,394 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 23838 transitions. [2025-01-09 05:15:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-01-09 05:15:19,416 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:19,416 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:19,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 05:15:19,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 05:15:19,617 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:19,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:19,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1638009579, now seen corresponding path program 1 times [2025-01-09 05:15:19,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:19,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572769742] [2025-01-09 05:15:19,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:19,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 05:15:19,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 05:15:19,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:19,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-09 05:15:19,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572769742] [2025-01-09 05:15:19,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572769742] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349448494] [2025-01-09 05:15:19,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:19,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:19,700 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:19,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 05:15:19,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 05:15:19,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 05:15:19,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:19,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:19,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:15:19,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-09 05:15:19,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349448494] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:19,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:19,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:15:19,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640910696] [2025-01-09 05:15:19,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:19,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:19,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:19,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:19,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:19,815 INFO L87 Difference]: Start difference. First operand 17417 states and 23838 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 05:15:20,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:20,672 INFO L93 Difference]: Finished difference Result 45771 states and 61336 transitions. [2025-01-09 05:15:20,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:20,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 156 [2025-01-09 05:15:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:20,766 INFO L225 Difference]: With dead ends: 45771 [2025-01-09 05:15:20,766 INFO L226 Difference]: Without dead ends: 30493 [2025-01-09 05:15:20,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:20,791 INFO L435 NwaCegarLoop]: 4283 mSDtfsCounter, 136 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 8411 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:20,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 8411 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:20,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30493 states. [2025-01-09 05:15:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30493 to 30491. [2025-01-09 05:15:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30491 states, 26108 states have (on average 1.3251493795005362) internal successors, (34597), 26573 states have internal predecessors, (34597), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 2136 states have return successors, (4298), 2229 states have call predecessors, (4298), 2245 states have call successors, (4298) [2025-01-09 05:15:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30491 states to 30491 states and 41140 transitions. [2025-01-09 05:15:21,749 INFO L78 Accepts]: Start accepts. Automaton has 30491 states and 41140 transitions. Word has length 156 [2025-01-09 05:15:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:21,749 INFO L471 AbstractCegarLoop]: Abstraction has 30491 states and 41140 transitions. [2025-01-09 05:15:21,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 05:15:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 30491 states and 41140 transitions. [2025-01-09 05:15:21,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:15:21,787 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:21,787 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:21,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 05:15:21,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:21,992 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:21,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash 861617176, now seen corresponding path program 1 times [2025-01-09 05:15:21,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031723158] [2025-01-09 05:15:21,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:22,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:15:22,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:15:22,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:22,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-01-09 05:15:22,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:22,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031723158] [2025-01-09 05:15:22,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031723158] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:22,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998853481] [2025-01-09 05:15:22,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:22,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:22,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:22,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:22,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 05:15:22,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:15:22,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:15:22,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:22,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:22,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:15:22,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-01-09 05:15:22,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:22,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998853481] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:22,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:22,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:15:22,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534811843] [2025-01-09 05:15:22,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:22,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:22,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:22,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:22,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:22,168 INFO L87 Difference]: Start difference. First operand 30491 states and 41140 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 05:15:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:24,692 INFO L93 Difference]: Finished difference Result 83037 states and 111284 transitions. [2025-01-09 05:15:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:24,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 157 [2025-01-09 05:15:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:24,922 INFO L225 Difference]: With dead ends: 83037 [2025-01-09 05:15:24,922 INFO L226 Difference]: Without dead ends: 54693 [2025-01-09 05:15:25,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:25,007 INFO L435 NwaCegarLoop]: 4285 mSDtfsCounter, 145 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 8413 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:25,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8413 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 05:15:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54693 states. [2025-01-09 05:15:26,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54693 to 54691. [2025-01-09 05:15:27,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54691 states, 46376 states have (on average 1.2917241676729343) internal successors, (59905), 47305 states have internal predecessors, (59905), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2025-01-09 05:15:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54691 states to 54691 states and 73458 transitions. [2025-01-09 05:15:27,208 INFO L78 Accepts]: Start accepts. Automaton has 54691 states and 73458 transitions. Word has length 157 [2025-01-09 05:15:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:27,209 INFO L471 AbstractCegarLoop]: Abstraction has 54691 states and 73458 transitions. [2025-01-09 05:15:27,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-01-09 05:15:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 54691 states and 73458 transitions. [2025-01-09 05:15:27,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:15:27,290 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:27,290 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:27,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 05:15:27,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:27,495 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:27,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:27,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1537707638, now seen corresponding path program 1 times [2025-01-09 05:15:27,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:27,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157937315] [2025-01-09 05:15:27,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:27,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:27,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:15:27,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:15:27,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:27,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-09 05:15:27,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157937315] [2025-01-09 05:15:27,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157937315] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:27,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409060628] [2025-01-09 05:15:27,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:27,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:27,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:27,561 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:27,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 05:15:27,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:15:27,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:15:27,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:27,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:27,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:15:27,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-09 05:15:27,684 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409060628] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:27,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:27,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:15:27,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242587650] [2025-01-09 05:15:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:27,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:27,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:27,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:27,685 INFO L87 Difference]: Start difference. First operand 54691 states and 73458 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:15:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:29,759 INFO L93 Difference]: Finished difference Result 95807 states and 128124 transitions. [2025-01-09 05:15:29,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:29,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2025-01-09 05:15:29,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:29,984 INFO L225 Difference]: With dead ends: 95807 [2025-01-09 05:15:29,984 INFO L226 Difference]: Without dead ends: 55973 [2025-01-09 05:15:30,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:30,070 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4092 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:30,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 4312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55973 states. [2025-01-09 05:15:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55973 to 54571. [2025-01-09 05:15:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54571 states, 46256 states have (on average 1.283401072293324) internal successors, (59365), 47185 states have internal predecessors, (59365), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2025-01-09 05:15:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54571 states to 54571 states and 72918 transitions. [2025-01-09 05:15:32,977 INFO L78 Accepts]: Start accepts. Automaton has 54571 states and 72918 transitions. Word has length 157 [2025-01-09 05:15:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:32,977 INFO L471 AbstractCegarLoop]: Abstraction has 54571 states and 72918 transitions. [2025-01-09 05:15:32,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:15:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 54571 states and 72918 transitions. [2025-01-09 05:15:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:15:33,032 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:33,032 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:33,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 05:15:33,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:33,232 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:33,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:33,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1395597008, now seen corresponding path program 1 times [2025-01-09 05:15:33,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:33,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073701266] [2025-01-09 05:15:33,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:33,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:33,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:15:33,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:15:33,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:33,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-01-09 05:15:33,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:33,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073701266] [2025-01-09 05:15:33,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073701266] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:33,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:15:33,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 05:15:33,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447421359] [2025-01-09 05:15:33,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:33,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:33,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:33,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:33,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 05:15:33,271 INFO L87 Difference]: Start difference. First operand 54571 states and 72918 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 05:15:34,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:34,456 INFO L93 Difference]: Finished difference Result 94289 states and 124995 transitions. [2025-01-09 05:15:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:34,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 157 [2025-01-09 05:15:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:34,641 INFO L225 Difference]: With dead ends: 94289 [2025-01-09 05:15:34,641 INFO L226 Difference]: Without dead ends: 41861 [2025-01-09 05:15:34,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 05:15:34,751 INFO L435 NwaCegarLoop]: 4132 mSDtfsCounter, 169 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 8090 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:34,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 8090 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41861 states. [2025-01-09 05:15:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41861 to 41861. [2025-01-09 05:15:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41861 states, 35638 states have (on average 1.2980245805039565) internal successors, (46259), 36331 states have internal predecessors, (46259), 3181 states have call successors, (3181), 2416 states have call predecessors, (3181), 3040 states have return successors, (6634), 3145 states have call predecessors, (6634), 3181 states have call successors, (6634) [2025-01-09 05:15:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41861 states to 41861 states and 56074 transitions. [2025-01-09 05:15:36,587 INFO L78 Accepts]: Start accepts. Automaton has 41861 states and 56074 transitions. Word has length 157 [2025-01-09 05:15:36,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:15:36,588 INFO L471 AbstractCegarLoop]: Abstraction has 41861 states and 56074 transitions. [2025-01-09 05:15:36,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-01-09 05:15:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 41861 states and 56074 transitions. [2025-01-09 05:15:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-01-09 05:15:36,629 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:15:36,629 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 05:15:36,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 05:15:36,629 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:15:36,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:15:36,630 INFO L85 PathProgramCache]: Analyzing trace with hash -21869493, now seen corresponding path program 1 times [2025-01-09 05:15:36,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:15:36,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955799902] [2025-01-09 05:15:36,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:36,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:15:36,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 05:15:36,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 05:15:36,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:36,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-01-09 05:15:36,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:15:36,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955799902] [2025-01-09 05:15:36,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955799902] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:15:36,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800663746] [2025-01-09 05:15:36,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:15:36,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:15:36,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:15:36,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 05:15:36,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 05:15:36,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 05:15:36,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 05:15:36,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:15:36,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:15:36,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:15:36,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:15:36,795 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-09 05:15:36,796 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:15:36,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800663746] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:15:36,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:15:36,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:15:36,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463430186] [2025-01-09 05:15:36,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:15:36,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:15:36,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:15:36,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:15:36,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:36,797 INFO L87 Difference]: Start difference. First operand 41861 states and 56074 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-01-09 05:15:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:15:38,026 INFO L93 Difference]: Finished difference Result 73109 states and 97034 transitions. [2025-01-09 05:15:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:15:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 158 [2025-01-09 05:15:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:15:38,203 INFO L225 Difference]: With dead ends: 73109 [2025-01-09 05:15:38,203 INFO L226 Difference]: Without dead ends: 42391 [2025-01-09 05:15:38,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:15:38,465 INFO L435 NwaCegarLoop]: 4147 mSDtfsCounter, 4090 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4090 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:15:38,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4090 Valid, 4303 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:15:38,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42391 states.