./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+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_label46+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 ff26d52d3dd6862aaa491849b175f59b72df2f5a860b195ac82ad5bea041e83f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 05:22:49,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 05:22:49,717 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 05:22:49,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 05:22:49,720 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 05:22:49,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 05:22:49,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 05:22:49,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 05:22:49,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 05:22:49,733 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 05:22:49,733 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 05:22:49,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 05:22:49,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 05:22:49,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 05:22:49,736 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:22:49,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 05:22:49,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:22:49,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 05:22:49,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 05:22:49,737 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 -> ff26d52d3dd6862aaa491849b175f59b72df2f5a860b195ac82ad5bea041e83f [2025-01-09 05:22:49,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 05:22:49,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 05:22:49,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 05:22:49,948 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 05:22:49,948 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 05:22:49,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c [2025-01-09 05:22:51,116 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b299a2e30/d7c5311b1aaa4491837e04622d2b75b1/FLAG215744604 [2025-01-09 05:22:51,764 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 05:22:51,765 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c [2025-01-09 05:22:51,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b299a2e30/d7c5311b1aaa4491837e04622d2b75b1/FLAG215744604 [2025-01-09 05:22:52,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b299a2e30/d7c5311b1aaa4491837e04622d2b75b1 [2025-01-09 05:22:52,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 05:22:52,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 05:22:52,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 05:22:52,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 05:22:52,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 05:22:52,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 05:22:52" (1/1) ... [2025-01-09 05:22:52,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3750e0b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:52, skipping insertion in model container [2025-01-09 05:22:52,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 05:22:52" (1/1) ... [2025-01-09 05:22:52,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 05:22:53,659 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_label46+token_ring.02.cil-1.c[382357,382370] [2025-01-09 05:22:53,687 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_label46+token_ring.02.cil-1.c[383339,383352] [2025-01-09 05:22:53,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 05:22:53,814 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 05:22:54,322 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_label46+token_ring.02.cil-1.c[382357,382370] [2025-01-09 05:22:54,327 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_label46+token_ring.02.cil-1.c[383339,383352] [2025-01-09 05:22:54,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 05:22:54,384 INFO L204 MainTranslator]: Completed translation [2025-01-09 05:22:54,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54 WrapperNode [2025-01-09 05:22:54,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 05:22:54,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 05:22:54,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 05:22:54,387 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 05:22:54,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:54,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:54,753 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12615 [2025-01-09 05:22:54,753 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 05:22:54,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 05:22:54,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 05:22:54,754 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 05:22:54,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:54,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:54,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:54,898 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 05:22:54,898 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:54,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:55,262 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:55,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:55,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:55,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:55,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:55,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 05:22:55,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 05:22:55,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 05:22:55,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 05:22:55,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (1/1) ... [2025-01-09 05:22:55,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 05:22:55,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:22:55,467 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 05:22:55,481 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 05:22:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 05:22:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-01-09 05:22:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-01-09 05:22:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-01-09 05:22:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-01-09 05:22:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-01-09 05:22:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-01-09 05:22:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-01-09 05:22:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-01-09 05:22:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-01-09 05:22:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-01-09 05:22:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 05:22:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-01-09 05:22:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-01-09 05:22:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 05:22:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 05:22:55,572 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 05:22:55,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 05:23:02,347 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2025-01-09 05:23:02,348 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 05:23:02,464 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 05:23:02,464 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2025-01-09 05:23:02,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 05:23:02 BoogieIcfgContainer [2025-01-09 05:23:02,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 05:23:02,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 05:23:02,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 05:23:02,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 05:23:02,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 05:22:52" (1/3) ... [2025-01-09 05:23:02,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9f2852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 05:23:02, skipping insertion in model container [2025-01-09 05:23:02,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 05:22:54" (2/3) ... [2025-01-09 05:23:02,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9f2852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 05:23:02, skipping insertion in model container [2025-01-09 05:23:02,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 05:23:02" (3/3) ... [2025-01-09 05:23:02,471 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.02.cil-1.c [2025-01-09 05:23:02,480 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 05:23:02,483 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label46+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 05:23:02,583 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 05:23:02,594 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;@36af8feb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 05:23:02,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 05:23:02,607 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 05:23:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:23:02,619 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:02,619 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 05:23:02,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:02,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:02,627 INFO L85 PathProgramCache]: Analyzing trace with hash 96040820, now seen corresponding path program 1 times [2025-01-09 05:23:02,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:02,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255247874] [2025-01-09 05:23:02,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:02,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:02,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:23:02,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:23:02,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:02,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:02,997 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 05:23:02,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:02,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255247874] [2025-01-09 05:23:02,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255247874] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:02,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:23:02,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 05:23:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575354447] [2025-01-09 05:23:03,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:03,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 05:23:03,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:03,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 05:23:03,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 05:23:03,020 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 05:23:03,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:03,484 INFO L93 Difference]: Finished difference Result 4742 states and 8733 transitions. [2025-01-09 05:23:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 05:23:03,486 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 05:23:03,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:03,513 INFO L225 Difference]: With dead ends: 4742 [2025-01-09 05:23:03,513 INFO L226 Difference]: Without dead ends: 2369 [2025-01-09 05:23:03,521 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 05:23:03,525 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, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 05:23:03,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4334 Valid, 12596 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 05:23:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2025-01-09 05:23:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2360. [2025-01-09 05:23:03,664 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 05:23:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 4308 transitions. [2025-01-09 05:23:03,679 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 4308 transitions. Word has length 66 [2025-01-09 05:23:03,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:03,679 INFO L471 AbstractCegarLoop]: Abstraction has 2360 states and 4308 transitions. [2025-01-09 05:23:03,679 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 05:23:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 4308 transitions. [2025-01-09 05:23:03,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:23:03,681 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:03,681 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 05:23:03,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 05:23:03,682 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:03,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1265496840, now seen corresponding path program 1 times [2025-01-09 05:23:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643395170] [2025-01-09 05:23:03,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:03,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:03,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:23:03,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:23:03,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:03,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:03,900 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 05:23:03,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:03,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643395170] [2025-01-09 05:23:03,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643395170] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:03,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:23:03,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:23:03,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605670609] [2025-01-09 05:23:03,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:03,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:23:03,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:03,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:23:03,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:03,902 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 05:23:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:04,310 INFO L93 Difference]: Finished difference Result 2729 states and 4854 transitions. [2025-01-09 05:23:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:23:04,311 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 05:23:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:04,324 INFO L225 Difference]: With dead ends: 2729 [2025-01-09 05:23:04,325 INFO L226 Difference]: Without dead ends: 2500 [2025-01-09 05:23:04,327 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 05:23:04,328 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 05:23:04,328 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 05:23:04,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2025-01-09 05:23:04,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2467. [2025-01-09 05:23:04,424 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 05:23:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4463 transitions. [2025-01-09 05:23:04,438 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4463 transitions. Word has length 66 [2025-01-09 05:23:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:04,439 INFO L471 AbstractCegarLoop]: Abstraction has 2467 states and 4463 transitions. [2025-01-09 05:23:04,439 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 05:23:04,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4463 transitions. [2025-01-09 05:23:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:23:04,445 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:04,445 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 05:23:04,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 05:23:04,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:04,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:04,446 INFO L85 PathProgramCache]: Analyzing trace with hash 272843190, now seen corresponding path program 1 times [2025-01-09 05:23:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:04,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565910085] [2025-01-09 05:23:04,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:04,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:23:04,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:23:04,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:04,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:04,666 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 05:23:04,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:04,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565910085] [2025-01-09 05:23:04,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565910085] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:23:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:23:04,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715741901] [2025-01-09 05:23:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:04,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:23:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:04,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:23:04,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:04,668 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 05:23:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:05,074 INFO L93 Difference]: Finished difference Result 3060 states and 5338 transitions. [2025-01-09 05:23:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:23:05,075 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 05:23:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:05,088 INFO L225 Difference]: With dead ends: 3060 [2025-01-09 05:23:05,088 INFO L226 Difference]: Without dead ends: 2724 [2025-01-09 05:23:05,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-01-09 05:23:05,092 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, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 05:23:05,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 16429 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 05:23:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2025-01-09 05:23:05,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2690. [2025-01-09 05:23:05,176 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 05:23:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 4790 transitions. [2025-01-09 05:23:05,188 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 4790 transitions. Word has length 66 [2025-01-09 05:23:05,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:05,188 INFO L471 AbstractCegarLoop]: Abstraction has 2690 states and 4790 transitions. [2025-01-09 05:23:05,189 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 05:23:05,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 4790 transitions. [2025-01-09 05:23:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:23:05,191 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:05,192 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 05:23:05,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 05:23:05,192 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:05,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:05,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1755742920, now seen corresponding path program 1 times [2025-01-09 05:23:05,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:05,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831828594] [2025-01-09 05:23:05,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:05,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:05,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:23:05,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:23:05,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:05,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:05,312 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 05:23:05,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:05,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831828594] [2025-01-09 05:23:05,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831828594] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:05,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:23:05,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:23:05,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988446133] [2025-01-09 05:23:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:05,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:23:05,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:05,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:23:05,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:05,314 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 05:23:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:05,806 INFO L93 Difference]: Finished difference Result 3781 states and 6404 transitions. [2025-01-09 05:23:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:23:05,806 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 05:23:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:05,818 INFO L225 Difference]: With dead ends: 3781 [2025-01-09 05:23:05,818 INFO L226 Difference]: Without dead ends: 3222 [2025-01-09 05:23:05,821 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 05:23:05,821 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, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 05:23:05,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4255 Valid, 16637 Invalid, 499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 05:23:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2025-01-09 05:23:05,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3120. [2025-01-09 05:23:05,888 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 05:23:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 5428 transitions. [2025-01-09 05:23:05,900 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 5428 transitions. Word has length 66 [2025-01-09 05:23:05,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:05,901 INFO L471 AbstractCegarLoop]: Abstraction has 3120 states and 5428 transitions. [2025-01-09 05:23:05,901 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 05:23:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 5428 transitions. [2025-01-09 05:23:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:23:05,902 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:05,902 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 05:23:05,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 05:23:05,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:05,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1771261638, now seen corresponding path program 1 times [2025-01-09 05:23:05,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:05,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641890735] [2025-01-09 05:23:05,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:05,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:05,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:23:05,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:23:05,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:05,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:05,971 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 05:23:05,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:05,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641890735] [2025-01-09 05:23:05,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641890735] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:05,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:23:05,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 05:23:05,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416506329] [2025-01-09 05:23:05,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:05,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 05:23:05,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:05,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 05:23:05,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:05,973 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 05:23:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:06,348 INFO L93 Difference]: Finished difference Result 5095 states and 8400 transitions. [2025-01-09 05:23:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 05:23:06,348 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 05:23:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:06,365 INFO L225 Difference]: With dead ends: 5095 [2025-01-09 05:23:06,365 INFO L226 Difference]: Without dead ends: 4106 [2025-01-09 05:23:06,369 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 05:23:06,370 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 05:23:06,370 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 05:23:06,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2025-01-09 05:23:06,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4011. [2025-01-09 05:23:06,498 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 05:23:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 6808 transitions. [2025-01-09 05:23:06,512 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 6808 transitions. Word has length 66 [2025-01-09 05:23:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:06,513 INFO L471 AbstractCegarLoop]: Abstraction has 4011 states and 6808 transitions. [2025-01-09 05:23:06,513 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 05:23:06,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 6808 transitions. [2025-01-09 05:23:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 05:23:06,515 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:06,515 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 05:23:06,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 05:23:06,515 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:06,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash 167900408, now seen corresponding path program 1 times [2025-01-09 05:23:06,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:06,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744109046] [2025-01-09 05:23:06,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:06,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:06,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-09 05:23:06,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 05:23:06,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:06,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:06,561 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 05:23:06,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:06,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744109046] [2025-01-09 05:23:06,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744109046] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:06,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:23:06,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 05:23:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859810244] [2025-01-09 05:23:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:06,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 05:23:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:06,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 05:23:06,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 05:23:06,563 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 05:23:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:06,852 INFO L93 Difference]: Finished difference Result 6910 states and 11255 transitions. [2025-01-09 05:23:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 05:23:06,853 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 05:23:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:06,870 INFO L225 Difference]: With dead ends: 6910 [2025-01-09 05:23:06,871 INFO L226 Difference]: Without dead ends: 5031 [2025-01-09 05:23:06,875 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 05:23:06,876 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 05:23:06,876 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 05:23:06,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2025-01-09 05:23:06,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4950. [2025-01-09 05:23:07,001 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 05:23:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 8120 transitions. [2025-01-09 05:23:07,019 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 8120 transitions. Word has length 66 [2025-01-09 05:23:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:07,020 INFO L471 AbstractCegarLoop]: Abstraction has 4950 states and 8120 transitions. [2025-01-09 05:23:07,020 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 05:23:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 8120 transitions. [2025-01-09 05:23:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 05:23:07,028 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:07,028 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 05:23:07,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 05:23:07,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:07,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:07,029 INFO L85 PathProgramCache]: Analyzing trace with hash 812456580, now seen corresponding path program 1 times [2025-01-09 05:23:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:07,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979484425] [2025-01-09 05:23:07,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:07,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:07,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:23:07,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:23:07,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:07,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:07,096 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 05:23:07,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:07,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979484425] [2025-01-09 05:23:07,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979484425] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:07,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084788293] [2025-01-09 05:23:07,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:07,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:07,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:07,103 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 05:23:07,107 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 05:23:07,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:23:07,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:23:07,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:07,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:07,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:23:07,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:07,269 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 05:23:07,269 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:07,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084788293] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:07,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:07,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-01-09 05:23:07,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639176074] [2025-01-09 05:23:07,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:07,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:07,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:07,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:07,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:07,277 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 05:23:07,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:07,437 INFO L93 Difference]: Finished difference Result 10443 states and 16282 transitions. [2025-01-09 05:23:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:07,438 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 05:23:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:07,480 INFO L225 Difference]: With dead ends: 10443 [2025-01-09 05:23:07,482 INFO L226 Difference]: Without dead ends: 7625 [2025-01-09 05:23:07,493 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 05:23:07,493 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 05:23:07,494 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 05:23:07,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2025-01-09 05:23:07,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7597. [2025-01-09 05:23:07,809 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 05:23:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7597 states to 7597 states and 11975 transitions. [2025-01-09 05:23:07,840 INFO L78 Accepts]: Start accepts. Automaton has 7597 states and 11975 transitions. Word has length 107 [2025-01-09 05:23:07,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:07,841 INFO L471 AbstractCegarLoop]: Abstraction has 7597 states and 11975 transitions. [2025-01-09 05:23:07,842 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 05:23:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7597 states and 11975 transitions. [2025-01-09 05:23:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 05:23:07,853 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:07,853 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 05:23:07,862 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 05:23:08,058 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 05:23:08,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:08,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:08,059 INFO L85 PathProgramCache]: Analyzing trace with hash 18602050, now seen corresponding path program 1 times [2025-01-09 05:23:08,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:08,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003334974] [2025-01-09 05:23:08,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:08,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:08,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:23:08,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:23:08,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:08,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:08,175 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 05:23:08,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003334974] [2025-01-09 05:23:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003334974] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:08,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52092098] [2025-01-09 05:23:08,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:08,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:08,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:08,178 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 05:23:08,180 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 05:23:08,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-01-09 05:23:08,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 05:23:08,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:08,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:08,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:23:08,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:08,364 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 05:23:08,364 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52092098] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:08,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:08,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:08,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236247458] [2025-01-09 05:23:08,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:08,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:08,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:08,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:08,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:08,366 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 05:23:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:08,854 INFO L93 Difference]: Finished difference Result 18239 states and 27877 transitions. [2025-01-09 05:23:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:08,855 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 05:23:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:08,908 INFO L225 Difference]: With dead ends: 18239 [2025-01-09 05:23:08,908 INFO L226 Difference]: Without dead ends: 12775 [2025-01-09 05:23:08,930 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 05:23:08,931 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 05:23:08,931 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 05:23:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2025-01-09 05:23:09,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12775. [2025-01-09 05:23:09,497 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 05:23:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12775 states to 12775 states and 19634 transitions. [2025-01-09 05:23:09,533 INFO L78 Accepts]: Start accepts. Automaton has 12775 states and 19634 transitions. Word has length 107 [2025-01-09 05:23:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:09,534 INFO L471 AbstractCegarLoop]: Abstraction has 12775 states and 19634 transitions. [2025-01-09 05:23:09,534 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 05:23:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 12775 states and 19634 transitions. [2025-01-09 05:23:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-01-09 05:23:09,560 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:09,560 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 05:23:09,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 05:23:09,764 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 05:23:09,764 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:09,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:09,765 INFO L85 PathProgramCache]: Analyzing trace with hash 67629329, now seen corresponding path program 1 times [2025-01-09 05:23:09,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:09,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54668846] [2025-01-09 05:23:09,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:09,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 05:23:09,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 05:23:09,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:09,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:09,844 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 05:23:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54668846] [2025-01-09 05:23:09,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54668846] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:09,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728748064] [2025-01-09 05:23:09,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:09,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:09,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:09,847 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 05:23:09,849 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 05:23:09,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-01-09 05:23:09,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-01-09 05:23:09,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:09,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:09,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:23:09,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:10,089 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 05:23:10,089 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:10,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728748064] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:10,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:10,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-01-09 05:23:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628799041] [2025-01-09 05:23:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:10,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:10,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:10,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:10,091 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 05:23:10,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:10,987 INFO L93 Difference]: Finished difference Result 33619 states and 50647 transitions. [2025-01-09 05:23:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:10,988 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 05:23:10,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:11,085 INFO L225 Difference]: With dead ends: 33619 [2025-01-09 05:23:11,086 INFO L226 Difference]: Without dead ends: 22981 [2025-01-09 05:23:11,127 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 05:23:11,130 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, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:23:11,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4055 Valid, 4300 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:23:11,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22981 states. [2025-01-09 05:23:12,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22981 to 22875. [2025-01-09 05:23:12,184 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 05:23:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22875 states to 22875 states and 34304 transitions. [2025-01-09 05:23:12,253 INFO L78 Accepts]: Start accepts. Automaton has 22875 states and 34304 transitions. Word has length 139 [2025-01-09 05:23:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:12,253 INFO L471 AbstractCegarLoop]: Abstraction has 22875 states and 34304 transitions. [2025-01-09 05:23:12,254 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 05:23:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 22875 states and 34304 transitions. [2025-01-09 05:23:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:23:12,309 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:12,309 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 05:23:12,317 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 05:23:12,514 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 05:23:12,514 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:12,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:12,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1591654586, now seen corresponding path program 1 times [2025-01-09 05:23:12,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:12,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025994935] [2025-01-09 05:23:12,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:12,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:12,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:23:12,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:23:12,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:12,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:12,590 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 05:23:12,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:12,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025994935] [2025-01-09 05:23:12,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025994935] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:12,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35681263] [2025-01-09 05:23:12,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:12,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:12,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:12,593 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 05:23:12,594 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 05:23:12,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:23:12,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:23:12,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:12,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:12,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:23:12,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:12,782 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 05:23:12,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:12,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35681263] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:12,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:12,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:12,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82984356] [2025-01-09 05:23:12,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:12,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:12,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:12,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:12,783 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 05:23:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:13,864 INFO L93 Difference]: Finished difference Result 46049 states and 70708 transitions. [2025-01-09 05:23:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:13,865 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 05:23:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:14,032 INFO L225 Difference]: With dead ends: 46049 [2025-01-09 05:23:14,033 INFO L226 Difference]: Without dead ends: 25309 [2025-01-09 05:23:14,089 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 05:23:14,090 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 05:23:14,090 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 05:23:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25309 states. [2025-01-09 05:23:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25309 to 25309. [2025-01-09 05:23:15,033 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 05:23:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25309 states to 25309 states and 36532 transitions. [2025-01-09 05:23:15,112 INFO L78 Accepts]: Start accepts. Automaton has 25309 states and 36532 transitions. Word has length 155 [2025-01-09 05:23:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:15,113 INFO L471 AbstractCegarLoop]: Abstraction has 25309 states and 36532 transitions. [2025-01-09 05:23:15,113 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 05:23:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 25309 states and 36532 transitions. [2025-01-09 05:23:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:23:15,157 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:15,157 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 05:23:15,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 05:23:15,358 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 05:23:15,358 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:15,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:15,359 INFO L85 PathProgramCache]: Analyzing trace with hash 661628733, now seen corresponding path program 1 times [2025-01-09 05:23:15,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131570918] [2025-01-09 05:23:15,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:15,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:23:15,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:23:15,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:15,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:15,419 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 05:23:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131570918] [2025-01-09 05:23:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131570918] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184642165] [2025-01-09 05:23:15,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:15,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:15,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:15,425 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 05:23:15,437 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 05:23:15,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:23:15,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:23:15,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:15,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:15,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:23:15,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:15,708 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 05:23:15,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:15,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184642165] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:15,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:15,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617471407] [2025-01-09 05:23:15,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:15,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:15,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:15,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:15,713 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 05:23:16,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:16,598 INFO L93 Difference]: Finished difference Result 40779 states and 58823 transitions. [2025-01-09 05:23:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:16,599 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 05:23:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:16,692 INFO L225 Difference]: With dead ends: 40779 [2025-01-09 05:23:16,692 INFO L226 Difference]: Without dead ends: 21961 [2025-01-09 05:23:16,742 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 05:23:16,743 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 05:23:16,743 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 05:23:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21961 states. [2025-01-09 05:23:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21961 to 16593. [2025-01-09 05:23:17,814 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 05:23:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16593 states to 16593 states and 23060 transitions. [2025-01-09 05:23:17,850 INFO L78 Accepts]: Start accepts. Automaton has 16593 states and 23060 transitions. Word has length 155 [2025-01-09 05:23:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:17,850 INFO L471 AbstractCegarLoop]: Abstraction has 16593 states and 23060 transitions. [2025-01-09 05:23:17,850 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 05:23:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 16593 states and 23060 transitions. [2025-01-09 05:23:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-01-09 05:23:17,867 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:17,867 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 05:23:17,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 05:23:18,068 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 05:23:18,068 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:18,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -764266273, now seen corresponding path program 1 times [2025-01-09 05:23:18,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:18,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214921669] [2025-01-09 05:23:18,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:18,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:18,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:23:18,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:23:18,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:18,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:18,140 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 05:23:18,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:18,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214921669] [2025-01-09 05:23:18,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214921669] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:18,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223824512] [2025-01-09 05:23:18,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:18,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:18,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:18,145 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 05:23:18,146 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 05:23:18,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-01-09 05:23:18,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-01-09 05:23:18,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:18,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:18,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:23:18,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:18,271 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 05:23:18,274 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:18,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223824512] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:18,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:18,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:18,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585101641] [2025-01-09 05:23:18,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:18,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:18,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:18,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:18,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:18,275 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 05:23:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:18,668 INFO L93 Difference]: Finished difference Result 27553 states and 37425 transitions. [2025-01-09 05:23:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:18,669 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 05:23:18,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:18,731 INFO L225 Difference]: With dead ends: 27553 [2025-01-09 05:23:18,732 INFO L226 Difference]: Without dead ends: 17527 [2025-01-09 05:23:18,754 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 05:23:18,755 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 05:23:18,755 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 05:23:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17527 states. [2025-01-09 05:23:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17527 to 17417. [2025-01-09 05:23:19,335 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 05:23:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 23838 transitions. [2025-01-09 05:23:19,394 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 23838 transitions. Word has length 155 [2025-01-09 05:23:19,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:19,395 INFO L471 AbstractCegarLoop]: Abstraction has 17417 states and 23838 transitions. [2025-01-09 05:23:19,395 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 05:23:19,395 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 23838 transitions. [2025-01-09 05:23:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-01-09 05:23:19,416 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:19,416 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 05:23:19,423 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 05:23:19,617 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 05:23:19,618 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:19,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1638009579, now seen corresponding path program 1 times [2025-01-09 05:23:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:19,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50447181] [2025-01-09 05:23:19,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:19,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:19,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 05:23:19,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 05:23:19,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:19,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:19,712 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 05:23:19,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:19,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50447181] [2025-01-09 05:23:19,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50447181] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:19,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402041081] [2025-01-09 05:23:19,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:19,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:19,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:19,715 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 05:23:19,716 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 05:23:19,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-01-09 05:23:19,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-01-09 05:23:19,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:19,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:19,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:23:19,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:19,835 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 05:23:19,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:19,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402041081] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:19,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:19,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:19,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121779196] [2025-01-09 05:23:19,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:19,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:19,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:19,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:19,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:19,837 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 05:23:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:20,813 INFO L93 Difference]: Finished difference Result 45771 states and 61336 transitions. [2025-01-09 05:23:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:20,813 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 05:23:20,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:21,085 INFO L225 Difference]: With dead ends: 45771 [2025-01-09 05:23:21,086 INFO L226 Difference]: Without dead ends: 30493 [2025-01-09 05:23:21,109 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 05:23:21,110 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 05:23:21,110 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 05:23:21,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30493 states. [2025-01-09 05:23:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30493 to 30491. [2025-01-09 05:23:21,928 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 05:23:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30491 states to 30491 states and 41140 transitions. [2025-01-09 05:23:22,005 INFO L78 Accepts]: Start accepts. Automaton has 30491 states and 41140 transitions. Word has length 156 [2025-01-09 05:23:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:22,006 INFO L471 AbstractCegarLoop]: Abstraction has 30491 states and 41140 transitions. [2025-01-09 05:23:22,006 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 05:23:22,006 INFO L276 IsEmpty]: Start isEmpty. Operand 30491 states and 41140 transitions. [2025-01-09 05:23:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:23:22,039 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:22,040 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 05:23:22,052 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 05:23:22,244 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 05:23:22,244 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:22,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash 861617176, now seen corresponding path program 1 times [2025-01-09 05:23:22,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:22,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140994192] [2025-01-09 05:23:22,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:22,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:22,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:23:22,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:23:22,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:22,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:22,317 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 05:23:22,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:22,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140994192] [2025-01-09 05:23:22,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140994192] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:22,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448711195] [2025-01-09 05:23:22,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:22,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:22,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:22,320 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 05:23:22,322 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 05:23:22,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:23:22,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:23:22,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:22,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:22,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-09 05:23:22,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:22,424 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 05:23:22,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448711195] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:22,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718112168] [2025-01-09 05:23:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:22,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:22,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:22,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:22,426 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 05:23:24,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:24,845 INFO L93 Difference]: Finished difference Result 83037 states and 111284 transitions. [2025-01-09 05:23:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:24,846 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 05:23:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:25,096 INFO L225 Difference]: With dead ends: 83037 [2025-01-09 05:23:25,097 INFO L226 Difference]: Without dead ends: 54693 [2025-01-09 05:23:25,179 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 05:23:25,180 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, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:23:25,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8413 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:23:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54693 states. [2025-01-09 05:23:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54693 to 54691. [2025-01-09 05:23:27,805 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 05:23:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54691 states to 54691 states and 73458 transitions. [2025-01-09 05:23:28,076 INFO L78 Accepts]: Start accepts. Automaton has 54691 states and 73458 transitions. Word has length 157 [2025-01-09 05:23:28,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:28,076 INFO L471 AbstractCegarLoop]: Abstraction has 54691 states and 73458 transitions. [2025-01-09 05:23:28,077 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 05:23:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 54691 states and 73458 transitions. [2025-01-09 05:23:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:23:28,140 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:28,140 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 05:23:28,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 05:23:28,341 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 05:23:28,341 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:28,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1537707638, now seen corresponding path program 1 times [2025-01-09 05:23:28,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:28,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790045328] [2025-01-09 05:23:28,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:28,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:23:28,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:23:28,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:28,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:28,409 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 05:23:28,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:28,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790045328] [2025-01-09 05:23:28,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790045328] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:28,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406263944] [2025-01-09 05:23:28,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:28,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:28,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:28,417 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 05:23:28,418 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 05:23:28,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:23:28,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:23:28,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:28,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:28,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:23:28,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:28,538 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 05:23:28,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:28,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406263944] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:28,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:28,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:28,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476001218] [2025-01-09 05:23:28,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:28,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:28,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:28,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:28,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:28,540 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 05:23:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:30,098 INFO L93 Difference]: Finished difference Result 95807 states and 128124 transitions. [2025-01-09 05:23:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:30,098 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 05:23:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:30,285 INFO L225 Difference]: With dead ends: 95807 [2025-01-09 05:23:30,285 INFO L226 Difference]: Without dead ends: 55973 [2025-01-09 05:23:30,496 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 05:23:30,496 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 05:23:30,497 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 05:23:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55973 states. [2025-01-09 05:23:32,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55973 to 54571. [2025-01-09 05:23:32,568 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 05:23:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54571 states to 54571 states and 72918 transitions. [2025-01-09 05:23:32,773 INFO L78 Accepts]: Start accepts. Automaton has 54571 states and 72918 transitions. Word has length 157 [2025-01-09 05:23:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:32,773 INFO L471 AbstractCegarLoop]: Abstraction has 54571 states and 72918 transitions. [2025-01-09 05:23:32,773 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 05:23:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 54571 states and 72918 transitions. [2025-01-09 05:23:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-01-09 05:23:32,840 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:32,841 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 05:23:32,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 05:23:33,045 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 05:23:33,045 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:33,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:33,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1395597008, now seen corresponding path program 1 times [2025-01-09 05:23:33,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:33,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870295381] [2025-01-09 05:23:33,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:33,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:33,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-01-09 05:23:33,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-01-09 05:23:33,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:33,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:33,108 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 05:23:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870295381] [2025-01-09 05:23:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870295381] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:33,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:23:33,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 05:23:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764685411] [2025-01-09 05:23:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:33,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:33,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:33,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 05:23:33,111 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 05:23:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:34,629 INFO L93 Difference]: Finished difference Result 94289 states and 124995 transitions. [2025-01-09 05:23:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:34,630 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 05:23:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:34,826 INFO L225 Difference]: With dead ends: 94289 [2025-01-09 05:23:34,826 INFO L226 Difference]: Without dead ends: 41861 [2025-01-09 05:23:34,930 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 05:23:34,931 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 05:23:34,932 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 05:23:34,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41861 states. [2025-01-09 05:23:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41861 to 41861. [2025-01-09 05:23:36,923 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 05:23:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41861 states to 41861 states and 56074 transitions. [2025-01-09 05:23:37,049 INFO L78 Accepts]: Start accepts. Automaton has 41861 states and 56074 transitions. Word has length 157 [2025-01-09 05:23:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:37,050 INFO L471 AbstractCegarLoop]: Abstraction has 41861 states and 56074 transitions. [2025-01-09 05:23:37,050 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 05:23:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 41861 states and 56074 transitions. [2025-01-09 05:23:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-01-09 05:23:37,089 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:37,089 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 05:23:37,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-01-09 05:23:37,089 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:37,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash -21869493, now seen corresponding path program 1 times [2025-01-09 05:23:37,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:37,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732049736] [2025-01-09 05:23:37,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:37,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:37,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 05:23:37,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 05:23:37,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:37,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:37,136 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 05:23:37,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:37,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732049736] [2025-01-09 05:23:37,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732049736] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:37,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291922396] [2025-01-09 05:23:37,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:37,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:37,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:37,145 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 05:23:37,146 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 05:23:37,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 05:23:37,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 05:23:37,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:37,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:37,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:23:37,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:37,260 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 05:23:37,261 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:37,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291922396] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:37,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:37,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:37,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972725123] [2025-01-09 05:23:37,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:37,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:37,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:37,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:37,262 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 05:23:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:38,898 INFO L93 Difference]: Finished difference Result 73109 states and 97034 transitions. [2025-01-09 05:23:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:38,899 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 05:23:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:39,029 INFO L225 Difference]: With dead ends: 73109 [2025-01-09 05:23:39,030 INFO L226 Difference]: Without dead ends: 42391 [2025-01-09 05:23:39,070 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 05:23:39,071 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 05:23:39,071 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 05:23:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42391 states. [2025-01-09 05:23:40,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42391 to 41861. [2025-01-09 05:23:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41861 states, 35638 states have (on average 1.2923003535551938) internal successors, (46055), 36331 states have internal predecessors, (46055), 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 05:23:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41861 states to 41861 states and 55870 transitions. [2025-01-09 05:23:40,856 INFO L78 Accepts]: Start accepts. Automaton has 41861 states and 55870 transitions. Word has length 158 [2025-01-09 05:23:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:40,857 INFO L471 AbstractCegarLoop]: Abstraction has 41861 states and 55870 transitions. [2025-01-09 05:23:40,857 INFO L472 AbstractCegarLoop]: INTERPOLANT 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) [2025-01-09 05:23:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 41861 states and 55870 transitions. [2025-01-09 05:23:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-01-09 05:23:40,901 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:40,901 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 05:23:40,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 05:23:41,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 05:23:41,105 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:41,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash -441785525, now seen corresponding path program 1 times [2025-01-09 05:23:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:41,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246272403] [2025-01-09 05:23:41,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:41,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-01-09 05:23:41,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-01-09 05:23:41,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:41,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2025-01-09 05:23:41,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:41,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246272403] [2025-01-09 05:23:41,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246272403] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:41,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 05:23:41,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 05:23:41,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634617149] [2025-01-09 05:23:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:41,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:41,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:41,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:41,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 05:23:41,146 INFO L87 Difference]: Start difference. First operand 41861 states and 55870 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 05:23:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:42,540 INFO L93 Difference]: Finished difference Result 72581 states and 95859 transitions. [2025-01-09 05:23:42,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:42,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 158 [2025-01-09 05:23:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:42,713 INFO L225 Difference]: With dead ends: 72581 [2025-01-09 05:23:42,714 INFO L226 Difference]: Without dead ends: 32857 [2025-01-09 05:23:42,783 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 05:23:42,784 INFO L435 NwaCegarLoop]: 4131 mSDtfsCounter, 167 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 8089 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:23:42,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 8089 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:23:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32857 states. [2025-01-09 05:23:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32857 to 32857. [2025-01-09 05:23:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32857 states, 28104 states have (on average 1.3057571875889553) internal successors, (36697), 28623 states have internal predecessors, (36697), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2324 states have return successors, (4846), 2393 states have call predecessors, (4846), 2427 states have call successors, (4846) [2025-01-09 05:23:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32857 states to 32857 states and 43970 transitions. [2025-01-09 05:23:43,942 INFO L78 Accepts]: Start accepts. Automaton has 32857 states and 43970 transitions. Word has length 158 [2025-01-09 05:23:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:43,943 INFO L471 AbstractCegarLoop]: Abstraction has 32857 states and 43970 transitions. [2025-01-09 05:23:43,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 05:23:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 32857 states and 43970 transitions. [2025-01-09 05:23:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-01-09 05:23:43,972 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:43,973 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, 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 05:23:43,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-09 05:23:43,973 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:43,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1253678580, now seen corresponding path program 1 times [2025-01-09 05:23:43,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:43,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836177939] [2025-01-09 05:23:43,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:43,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:43,981 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-01-09 05:23:43,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-01-09 05:23:43,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:43,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:44,026 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 05:23:44,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:44,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836177939] [2025-01-09 05:23:44,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836177939] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:44,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405043428] [2025-01-09 05:23:44,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:44,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:44,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:44,028 INFO L229 MonitoredProcess]: Starting monitored process 12 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 05:23:44,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 05:23:44,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-01-09 05:23:44,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-01-09 05:23:44,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:44,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:44,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:23:44,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 05:23:44,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:44,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405043428] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:44,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:44,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:44,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102272091] [2025-01-09 05:23:44,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:44,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:44,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:44,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:44,154 INFO L87 Difference]: Start difference. First operand 32857 states and 43970 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 05:23:45,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:45,582 INFO L93 Difference]: Finished difference Result 54317 states and 73616 transitions. [2025-01-09 05:23:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:45,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 161 [2025-01-09 05:23:45,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:45,705 INFO L225 Difference]: With dead ends: 54317 [2025-01-09 05:23:45,705 INFO L226 Difference]: Without dead ends: 32947 [2025-01-09 05:23:45,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 161 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 05:23:45,745 INFO L435 NwaCegarLoop]: 4271 mSDtfsCounter, 124 mSDsluCounter, 4114 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 8385 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:23:45,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 8385 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 05:23:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32947 states. [2025-01-09 05:23:46,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32947 to 32857. [2025-01-09 05:23:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32857 states, 28104 states have (on average 1.285831198405921) internal successors, (36137), 28623 states have internal predecessors, (36137), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2324 states have return successors, (4846), 2393 states have call predecessors, (4846), 2427 states have call successors, (4846) [2025-01-09 05:23:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32857 states to 32857 states and 43410 transitions. [2025-01-09 05:23:46,911 INFO L78 Accepts]: Start accepts. Automaton has 32857 states and 43410 transitions. Word has length 161 [2025-01-09 05:23:46,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 05:23:46,911 INFO L471 AbstractCegarLoop]: Abstraction has 32857 states and 43410 transitions. [2025-01-09 05:23:46,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 05:23:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 32857 states and 43410 transitions. [2025-01-09 05:23:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-01-09 05:23:46,939 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 05:23:46,940 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, 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 05:23:46,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 05:23:47,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:47,144 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 05:23:47,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 05:23:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash -299420595, now seen corresponding path program 1 times [2025-01-09 05:23:47,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 05:23:47,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995110615] [2025-01-09 05:23:47,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:47,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 05:23:47,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-01-09 05:23:47,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-01-09 05:23:47,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:47,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-01-09 05:23:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 05:23:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995110615] [2025-01-09 05:23:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995110615] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 05:23:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460287353] [2025-01-09 05:23:47,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 05:23:47,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 05:23:47,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 05:23:47,198 INFO L229 MonitoredProcess]: Starting monitored process 13 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 05:23:47,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 05:23:47,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-01-09 05:23:47,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-01-09 05:23:47,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 05:23:47,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 05:23:47,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 05:23:47,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 05:23:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 05:23:47,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 05:23:47,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460287353] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 05:23:47,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 05:23:47,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-01-09 05:23:47,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176863622] [2025-01-09 05:23:47,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 05:23:47,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 05:23:47,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 05:23:47,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 05:23:47,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 05:23:47,315 INFO L87 Difference]: Start difference. First operand 32857 states and 43410 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 05:23:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 05:23:48,929 INFO L93 Difference]: Finished difference Result 53501 states and 71706 transitions. [2025-01-09 05:23:48,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 05:23:48,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 162 [2025-01-09 05:23:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 05:23:49,064 INFO L225 Difference]: With dead ends: 53501 [2025-01-09 05:23:49,064 INFO L226 Difference]: Without dead ends: 32943 [2025-01-09 05:23:49,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 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 05:23:49,120 INFO L435 NwaCegarLoop]: 4232 mSDtfsCounter, 127 mSDsluCounter, 4112 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 8344 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 05:23:49,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 8344 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]