./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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_label44+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 8d5f2743e51cbbe46f8de63e434497edb332f77d30ade744101224af0fe29fdc --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:11:19,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:11:19,506 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 17:11:19,509 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:11:19,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:11:19,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:11:19,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:11:19,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:11:19,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:11:19,524 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:11:19,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:11:19,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:11:19,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:11:19,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:11:19,525 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:11:19,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:11:19,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:11:19,525 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:11:19,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:11:19,526 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:11:19,526 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:11:19,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:11:19,527 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:11:19,527 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 -> 8d5f2743e51cbbe46f8de63e434497edb332f77d30ade744101224af0fe29fdc [2025-02-05 17:11:19,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:11:19,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:11:19,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:11:19,738 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:11:19,739 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:11:19,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c [2025-02-05 17:11:20,917 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d9d98c83/58d8f88b273f43c189f6b31a52385b1d/FLAG3e60ebb04 [2025-02-05 17:11:21,542 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:11:21,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.02.cil-1.c [2025-02-05 17:11:21,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d9d98c83/58d8f88b273f43c189f6b31a52385b1d/FLAG3e60ebb04 [2025-02-05 17:11:21,611 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d9d98c83/58d8f88b273f43c189f6b31a52385b1d [2025-02-05 17:11:21,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:11:21,615 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:11:21,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:11:21,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:11:21,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:11:21,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:11:21" (1/1) ... [2025-02-05 17:11:21,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53338b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:21, skipping insertion in model container [2025-02-05 17:11:21,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:11:21" (1/1) ... [2025-02-05 17:11:21,752 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:11:22,847 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_label44+token_ring.02.cil-1.c[377340,377353] [2025-02-05 17:11:22,875 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_label44+token_ring.02.cil-1.c[383339,383352] [2025-02-05 17:11:22,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:11:22,992 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:11:23,496 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_label44+token_ring.02.cil-1.c[377340,377353] [2025-02-05 17:11:23,503 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_label44+token_ring.02.cil-1.c[383339,383352] [2025-02-05 17:11:23,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:11:23,557 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:11:23,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23 WrapperNode [2025-02-05 17:11:23,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:11:23,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:11:23,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:11:23,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:11:23,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:23,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:23,901 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12615 [2025-02-05 17:11:23,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:11:23,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:11:23,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:11:23,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:11:23,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:23,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:23,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:24,020 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]. [2025-02-05 17:11:24,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:24,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:24,317 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:24,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:24,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:24,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:24,392 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:11:24,393 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:11:24,393 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:11:24,393 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:11:24,393 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (1/1) ... [2025-02-05 17:11:24,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:11:24,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:24,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 17:11:24,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 17:11:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:11:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 17:11:24,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 17:11:24,444 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 17:11:24,444 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 17:11:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 17:11:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 17:11:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 17:11:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 17:11:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 17:11:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 17:11:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 17:11:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 17:11:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 17:11:24,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:11:24,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:11:24,528 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:11:24,529 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:11:30,952 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-02-05 17:11:30,953 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-02-05 17:11:30,953 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-02-05 17:11:30,953 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-02-05 17:11:30,954 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-02-05 17:11:30,954 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-02-05 17:11:30,954 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-02-05 17:11:31,135 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2025-02-05 17:11:31,136 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:11:31,193 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:11:31,193 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 17:11:31,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:11:31 BoogieIcfgContainer [2025-02-05 17:11:31,194 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:11:31,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:11:31,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:11:31,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:11:31,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:11:21" (1/3) ... [2025-02-05 17:11:31,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ada1a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:11:31, skipping insertion in model container [2025-02-05 17:11:31,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:11:23" (2/3) ... [2025-02-05 17:11:31,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ada1a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:11:31, skipping insertion in model container [2025-02-05 17:11:31,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:11:31" (3/3) ... [2025-02-05 17:11:31,201 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.02.cil-1.c [2025-02-05 17:11:31,212 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:11:31,215 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label44+token_ring.02.cil-1.c that has 7 procedures, 2321 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-02-05 17:11:31,294 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:11:31,303 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;@76f59386, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:11:31,303 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:11:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 2321 states, 2296 states have (on average 1.8523519163763067) internal successors, (4253), 2299 states have internal predecessors, (4253), 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) [2025-02-05 17:11:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 17:11:31,320 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:31,321 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, 1, 1] [2025-02-05 17:11:31,321 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:31,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:31,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1137518292, now seen corresponding path program 1 times [2025-02-05 17:11:31,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:31,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714520056] [2025-02-05 17:11:31,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:31,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:31,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 17:11:31,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 17:11:31,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:31,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:11:31,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714520056] [2025-02-05 17:11:31,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714520056] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:31,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:11:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:11:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452050789] [2025-02-05 17:11:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:31,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:11:31,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:31,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:11:31,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:11:31,692 INFO L87 Difference]: Start difference. First operand has 2321 states, 2296 states have (on average 1.8523519163763067) internal successors, (4253), 2299 states have internal predecessors, (4253), 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 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:32,008 INFO L93 Difference]: Finished difference Result 4636 states and 8565 transitions. [2025-02-05 17:11:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:11:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2025-02-05 17:11:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:32,032 INFO L225 Difference]: With dead ends: 4636 [2025-02-05 17:11:32,032 INFO L226 Difference]: Without dead ends: 2260 [2025-02-05 17:11:32,042 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 [2025-02-05 17:11:32,045 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4254 mSDsluCounter, 8269 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 12431 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 17:11:32,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 12431 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 17:11:32,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2025-02-05 17:11:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2254. [2025-02-05 17:11:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 2230 states have (on average 1.8457399103139014) internal successors, (4116), 2232 states have internal predecessors, (4116), 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) [2025-02-05 17:11:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 4148 transitions. [2025-02-05 17:11:32,177 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 4148 transitions. Word has length 68 [2025-02-05 17:11:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:32,178 INFO L471 AbstractCegarLoop]: Abstraction has 2254 states and 4148 transitions. [2025-02-05 17:11:32,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 4148 transitions. [2025-02-05 17:11:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 17:11:32,181 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:32,181 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, 1, 1] [2025-02-05 17:11:32,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 17:11:32,181 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:32,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:32,182 INFO L85 PathProgramCache]: Analyzing trace with hash -699508789, now seen corresponding path program 1 times [2025-02-05 17:11:32,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:32,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291870871] [2025-02-05 17:11:32,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:32,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:32,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 17:11:32,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 17:11:32,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:32,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:11:32,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:32,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291870871] [2025-02-05 17:11:32,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291870871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:32,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:11:32,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:11:32,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445293108] [2025-02-05 17:11:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:32,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:11:32,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:32,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:11:32,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:32,312 INFO L87 Difference]: Start difference. First operand 2254 states and 4148 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:32,722 INFO L93 Difference]: Finished difference Result 2514 states and 4530 transitions. [2025-02-05 17:11:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:11:32,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2025-02-05 17:11:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:32,733 INFO L225 Difference]: With dead ends: 2514 [2025-02-05 17:11:32,733 INFO L226 Difference]: Without dead ends: 2391 [2025-02-05 17:11:32,735 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 [2025-02-05 17:11:32,736 INFO L435 NwaCegarLoop]: 4196 mSDtfsCounter, 4247 mSDsluCounter, 12585 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 16781 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:11:32,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 16781 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:11:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2025-02-05 17:11:32,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2379. [2025-02-05 17:11:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2334 states have (on average 1.8281919451585262) internal successors, (4267), 2338 states have internal predecessors, (4267), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (36), 30 states have call predecessors, (36), 29 states have call successors, (36) [2025-02-05 17:11:32,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 4332 transitions. [2025-02-05 17:11:32,796 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 4332 transitions. Word has length 68 [2025-02-05 17:11:32,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:32,796 INFO L471 AbstractCegarLoop]: Abstraction has 2379 states and 4332 transitions. [2025-02-05 17:11:32,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 4332 transitions. [2025-02-05 17:11:32,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 17:11:32,798 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:32,798 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, 1, 1] [2025-02-05 17:11:32,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 17:11:32,799 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:32,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:32,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1669925196, now seen corresponding path program 1 times [2025-02-05 17:11:32,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:32,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832768154] [2025-02-05 17:11:32,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:32,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:32,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 17:11:32,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 17:11:32,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:32,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:11:32,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:32,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832768154] [2025-02-05 17:11:32,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832768154] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:32,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:11:32,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:11:32,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327777399] [2025-02-05 17:11:32,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:32,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:11:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:32,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:11:32,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:32,906 INFO L87 Difference]: Start difference. First operand 2379 states and 4332 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:33,286 INFO L93 Difference]: Finished difference Result 2913 states and 5112 transitions. [2025-02-05 17:11:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:11:33,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2025-02-05 17:11:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:33,300 INFO L225 Difference]: With dead ends: 2913 [2025-02-05 17:11:33,300 INFO L226 Difference]: Without dead ends: 2667 [2025-02-05 17:11:33,302 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 [2025-02-05 17:11:33,303 INFO L435 NwaCegarLoop]: 4172 mSDtfsCounter, 4318 mSDsluCounter, 12521 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4331 SdHoareTripleChecker+Valid, 16693 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:11:33,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4331 Valid, 16693 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:11:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2025-02-05 17:11:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2609. [2025-02-05 17:11:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2528 states have (on average 1.798259493670886) internal successors, (4546), 2536 states have internal predecessors, (4546), 49 states have call successors, (49), 24 states have call predecessors, (49), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-02-05 17:11:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4667 transitions. [2025-02-05 17:11:33,363 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4667 transitions. Word has length 68 [2025-02-05 17:11:33,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:33,363 INFO L471 AbstractCegarLoop]: Abstraction has 2609 states and 4667 transitions. [2025-02-05 17:11:33,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4667 transitions. [2025-02-05 17:11:33,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 17:11:33,365 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:33,365 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, 1, 1] [2025-02-05 17:11:33,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 17:11:33,365 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:33,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:33,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1855872085, now seen corresponding path program 1 times [2025-02-05 17:11:33,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:33,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504399347] [2025-02-05 17:11:33,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:33,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:33,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 17:11:33,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 17:11:33,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:33,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:11:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504399347] [2025-02-05 17:11:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504399347] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:33,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:11:33,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:11:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785923221] [2025-02-05 17:11:33,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:33,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:11:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:33,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:11:33,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:11:33,431 INFO L87 Difference]: Start difference. First operand 2609 states and 4667 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:33,600 INFO L93 Difference]: Finished difference Result 3114 states and 5421 transitions. [2025-02-05 17:11:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:11:33,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2025-02-05 17:11:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:33,610 INFO L225 Difference]: With dead ends: 3114 [2025-02-05 17:11:33,610 INFO L226 Difference]: Without dead ends: 2636 [2025-02-05 17:11:33,612 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 [2025-02-05 17:11:33,613 INFO L435 NwaCegarLoop]: 4088 mSDtfsCounter, 4180 mSDsluCounter, 8120 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4190 SdHoareTripleChecker+Valid, 12208 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:11:33,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4190 Valid, 12208 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:11:33,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2025-02-05 17:11:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2609. [2025-02-05 17:11:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 2528 states have (on average 1.7962816455696202) internal successors, (4541), 2536 states have internal predecessors, (4541), 49 states have call successors, (49), 24 states have call predecessors, (49), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-02-05 17:11:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 4662 transitions. [2025-02-05 17:11:33,741 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 4662 transitions. Word has length 68 [2025-02-05 17:11:33,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:33,741 INFO L471 AbstractCegarLoop]: Abstraction has 2609 states and 4662 transitions. [2025-02-05 17:11:33,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:33,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 4662 transitions. [2025-02-05 17:11:33,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 17:11:33,742 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:33,742 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, 1, 1] [2025-02-05 17:11:33,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 17:11:33,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:33,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:33,743 INFO L85 PathProgramCache]: Analyzing trace with hash -722681492, now seen corresponding path program 1 times [2025-02-05 17:11:33,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:33,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076326895] [2025-02-05 17:11:33,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:33,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:33,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 17:11:33,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 17:11:33,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:33,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:11:33,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:33,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076326895] [2025-02-05 17:11:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076326895] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:33,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:11:33,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:11:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251340147] [2025-02-05 17:11:33,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:33,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:11:33,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:33,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:11:33,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:33,859 INFO L87 Difference]: Start difference. First operand 2609 states and 4662 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:34,230 INFO L93 Difference]: Finished difference Result 3589 states and 6089 transitions. [2025-02-05 17:11:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:11:34,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2025-02-05 17:11:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:34,246 INFO L225 Difference]: With dead ends: 3589 [2025-02-05 17:11:34,246 INFO L226 Difference]: Without dead ends: 3113 [2025-02-05 17:11:34,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:11:34,252 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4245 mSDsluCounter, 12484 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 16646 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:11:34,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4258 Valid, 16646 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:11:34,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3113 states. [2025-02-05 17:11:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3113 to 3069. [2025-02-05 17:11:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 2912 states have (on average 1.7455357142857142) internal successors, (5083), 2934 states have internal predecessors, (5083), 87 states have call successors, (87), 48 states have call predecessors, (87), 68 states have return successors, (166), 94 states have call predecessors, (166), 87 states have call successors, (166) [2025-02-05 17:11:34,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 5336 transitions. [2025-02-05 17:11:34,329 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 5336 transitions. Word has length 68 [2025-02-05 17:11:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:34,330 INFO L471 AbstractCegarLoop]: Abstraction has 3069 states and 5336 transitions. [2025-02-05 17:11:34,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 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) [2025-02-05 17:11:34,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 5336 transitions. [2025-02-05 17:11:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 17:11:34,331 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:34,331 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, 1, 1] [2025-02-05 17:11:34,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 17:11:34,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:34,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash -963221621, now seen corresponding path program 1 times [2025-02-05 17:11:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:34,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45030203] [2025-02-05 17:11:34,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:34,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:34,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-02-05 17:11:34,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 17:11:34,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:34,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:11:34,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45030203] [2025-02-05 17:11:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45030203] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:34,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:11:34,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 17:11:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342201750] [2025-02-05 17:11:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:34,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 17:11:34,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:34,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 17:11:34,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 17:11:34,392 INFO L87 Difference]: Start difference. First operand 3069 states and 5336 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-02-05 17:11:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:34,564 INFO L93 Difference]: Finished difference Result 4897 states and 8037 transitions. [2025-02-05 17:11:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:11:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2025-02-05 17:11:34,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:34,577 INFO L225 Difference]: With dead ends: 4897 [2025-02-05 17:11:34,577 INFO L226 Difference]: Without dead ends: 3961 [2025-02-05 17:11:34,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 17:11:34,580 INFO L435 NwaCegarLoop]: 4298 mSDtfsCounter, 4272 mSDsluCounter, 4239 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4272 SdHoareTripleChecker+Valid, 8537 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 [2025-02-05 17:11:34,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4272 Valid, 8537 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:11:34,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3961 states. [2025-02-05 17:11:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3961 to 3953. [2025-02-05 17:11:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3647 states have (on average 1.6682204551686317) internal successors, (6084), 3697 states have internal predecessors, (6084), 168 states have call successors, (168), 96 states have call predecessors, (168), 136 states have return successors, (311), 167 states have call predecessors, (311), 168 states have call successors, (311) [2025-02-05 17:11:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 6563 transitions. [2025-02-05 17:11:34,674 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 6563 transitions. Word has length 68 [2025-02-05 17:11:34,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:34,675 INFO L471 AbstractCegarLoop]: Abstraction has 3953 states and 6563 transitions. [2025-02-05 17:11:34,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-02-05 17:11:34,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 6563 transitions. [2025-02-05 17:11:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 17:11:34,678 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:34,678 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, 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] [2025-02-05 17:11:34,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 17:11:34,679 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:34,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:34,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1365497866, now seen corresponding path program 1 times [2025-02-05 17:11:34,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:34,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197560750] [2025-02-05 17:11:34,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:34,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:34,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 17:11:34,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 17:11:34,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:34,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:11:34,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:34,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197560750] [2025-02-05 17:11:34,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197560750] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:34,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038609549] [2025-02-05 17:11:34,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:34,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:34,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:34,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:11:34,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 17:11:34,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 17:11:34,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 17:11:34,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:34,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:34,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:11:34,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 17:11:34,886 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038609549] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:34,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:11:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204495478] [2025-02-05 17:11:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:34,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:34,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:34,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:34,889 INFO L87 Difference]: Start difference. First operand 3953 states and 6563 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2025-02-05 17:11:35,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:35,015 INFO L93 Difference]: Finished difference Result 7535 states and 11695 transitions. [2025-02-05 17:11:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:35,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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 112 [2025-02-05 17:11:35,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:35,039 INFO L225 Difference]: With dead ends: 7535 [2025-02-05 17:11:35,039 INFO L226 Difference]: Without dead ends: 5715 [2025-02-05 17:11:35,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:35,048 INFO L435 NwaCegarLoop]: 4142 mSDtfsCounter, 4101 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4304 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 [2025-02-05 17:11:35,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 4304 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:35,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5715 states. [2025-02-05 17:11:35,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5715 to 5665. [2025-02-05 17:11:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5665 states, 5069 states have (on average 1.5888735450779246) internal successors, (8054), 5167 states have internal predecessors, (8054), 322 states have call successors, (322), 192 states have call predecessors, (322), 272 states have return successors, (593), 313 states have call predecessors, (593), 322 states have call successors, (593) [2025-02-05 17:11:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5665 states to 5665 states and 8969 transitions. [2025-02-05 17:11:35,397 INFO L78 Accepts]: Start accepts. Automaton has 5665 states and 8969 transitions. Word has length 112 [2025-02-05 17:11:35,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:35,397 INFO L471 AbstractCegarLoop]: Abstraction has 5665 states and 8969 transitions. [2025-02-05 17:11:35,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2025-02-05 17:11:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5665 states and 8969 transitions. [2025-02-05 17:11:35,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 17:11:35,404 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:35,404 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, 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] [2025-02-05 17:11:35,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 17:11:35,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:35,605 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:35,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:35,605 INFO L85 PathProgramCache]: Analyzing trace with hash 363975056, now seen corresponding path program 1 times [2025-02-05 17:11:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:35,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805502403] [2025-02-05 17:11:35,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:35,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:35,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 17:11:35,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 17:11:35,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:35,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:11:35,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:35,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805502403] [2025-02-05 17:11:35,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805502403] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816325218] [2025-02-05 17:11:35,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:35,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:35,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:35,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:11:35,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 17:11:35,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 17:11:35,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 17:11:35,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:35,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:35,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:11:35,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 17:11:35,814 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:35,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816325218] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:35,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:35,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:11:35,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676768039] [2025-02-05 17:11:35,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:35,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:35,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:35,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:35,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:35,816 INFO L87 Difference]: Start difference. First operand 5665 states and 8969 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2025-02-05 17:11:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:36,076 INFO L93 Difference]: Finished difference Result 12615 states and 18883 transitions. [2025-02-05 17:11:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:36,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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 112 [2025-02-05 17:11:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:36,107 INFO L225 Difference]: With dead ends: 12615 [2025-02-05 17:11:36,107 INFO L226 Difference]: Without dead ends: 9083 [2025-02-05 17:11:36,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:36,119 INFO L435 NwaCegarLoop]: 4142 mSDtfsCounter, 4107 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 4304 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 [2025-02-05 17:11:36,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4107 Valid, 4304 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:36,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2025-02-05 17:11:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 8985. [2025-02-05 17:11:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8985 states, 7817 states have (on average 1.5159268261481387) internal successors, (11850), 8011 states have internal predecessors, (11850), 622 states have call successors, (622), 384 states have call predecessors, (622), 544 states have return successors, (1149), 597 states have call predecessors, (1149), 622 states have call successors, (1149) [2025-02-05 17:11:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8985 states to 8985 states and 13621 transitions. [2025-02-05 17:11:36,391 INFO L78 Accepts]: Start accepts. Automaton has 8985 states and 13621 transitions. Word has length 112 [2025-02-05 17:11:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:36,391 INFO L471 AbstractCegarLoop]: Abstraction has 8985 states and 13621 transitions. [2025-02-05 17:11:36,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2025-02-05 17:11:36,392 INFO L276 IsEmpty]: Start isEmpty. Operand 8985 states and 13621 transitions. [2025-02-05 17:11:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-02-05 17:11:36,399 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:36,400 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, 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] [2025-02-05 17:11:36,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 17:11:36,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:36,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:36,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1281625750, now seen corresponding path program 1 times [2025-02-05 17:11:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305578335] [2025-02-05 17:11:36,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:36,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 17:11:36,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 17:11:36,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:36,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:36,655 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:11:36,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305578335] [2025-02-05 17:11:36,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305578335] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262468673] [2025-02-05 17:11:36,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:36,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:36,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:36,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:11:36,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 17:11:36,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-02-05 17:11:36,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-02-05 17:11:36,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:36,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:36,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:11:36,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 17:11:36,739 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:36,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262468673] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:36,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:36,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:36,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405111643] [2025-02-05 17:11:36,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:36,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:36,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:36,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:36,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:36,740 INFO L87 Difference]: Start difference. First operand 8985 states and 13621 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2025-02-05 17:11:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:37,064 INFO L93 Difference]: Finished difference Result 22071 states and 32446 transitions. [2025-02-05 17:11:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:37,064 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), 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 112 [2025-02-05 17:11:37,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:37,109 INFO L225 Difference]: With dead ends: 22071 [2025-02-05 17:11:37,109 INFO L226 Difference]: Without dead ends: 15221 [2025-02-05 17:11:37,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:37,130 INFO L435 NwaCegarLoop]: 4301 mSDtfsCounter, 156 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8440 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 [2025-02-05 17:11:37,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8440 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:37,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15221 states. [2025-02-05 17:11:37,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15221 to 15221. [2025-02-05 17:11:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15221 states, 13024 states have (on average 1.4609183046683047) internal successors, (19027), 13379 states have internal predecessors, (19027), 1143 states have call successors, (1143), 732 states have call predecessors, (1143), 1052 states have return successors, (2331), 1125 states have call predecessors, (2331), 1143 states have call successors, (2331) [2025-02-05 17:11:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15221 states to 15221 states and 22501 transitions. [2025-02-05 17:11:37,748 INFO L78 Accepts]: Start accepts. Automaton has 15221 states and 22501 transitions. Word has length 112 [2025-02-05 17:11:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:37,748 INFO L471 AbstractCegarLoop]: Abstraction has 15221 states and 22501 transitions. [2025-02-05 17:11:37,748 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), 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) [2025-02-05 17:11:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 15221 states and 22501 transitions. [2025-02-05 17:11:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 17:11:37,779 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:37,779 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:11:37,786 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 [2025-02-05 17:11:37,979 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 [2025-02-05 17:11:37,980 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:37,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:37,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2110809421, now seen corresponding path program 1 times [2025-02-05 17:11:37,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:37,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263257859] [2025-02-05 17:11:37,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:37,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:37,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 17:11:37,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 17:11:37,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:37,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 17:11:38,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:38,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263257859] [2025-02-05 17:11:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263257859] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:38,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036748761] [2025-02-05 17:11:38,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:38,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:38,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:38,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:11:38,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 17:11:38,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 17:11:38,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 17:11:38,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:38,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:38,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:11:38,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 17:11:38,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:38,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036748761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:38,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:38,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:38,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292073138] [2025-02-05 17:11:38,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:38,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:38,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:38,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:38,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:38,257 INFO L87 Difference]: Start difference. First operand 15221 states and 22501 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2025-02-05 17:11:38,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:38,684 INFO L93 Difference]: Finished difference Result 23477 states and 34580 transitions. [2025-02-05 17:11:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:38,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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 164 [2025-02-05 17:11:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:38,723 INFO L225 Difference]: With dead ends: 23477 [2025-02-05 17:11:38,723 INFO L226 Difference]: Without dead ends: 13375 [2025-02-05 17:11:38,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:38,747 INFO L435 NwaCegarLoop]: 4139 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, 4173 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 [2025-02-05 17:11:38,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4074 Valid, 4173 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13375 states. [2025-02-05 17:11:39,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13375 to 13303. [2025-02-05 17:11:39,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13303 states, 11534 states have (on average 1.4374024622854171) internal successors, (16579), 11715 states have internal predecessors, (16579), 965 states have call successors, (965), 650 states have call predecessors, (965), 802 states have return successors, (1595), 947 states have call predecessors, (1595), 965 states have call successors, (1595) [2025-02-05 17:11:39,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13303 states to 13303 states and 19139 transitions. [2025-02-05 17:11:39,126 INFO L78 Accepts]: Start accepts. Automaton has 13303 states and 19139 transitions. Word has length 164 [2025-02-05 17:11:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:39,127 INFO L471 AbstractCegarLoop]: Abstraction has 13303 states and 19139 transitions. [2025-02-05 17:11:39,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2025-02-05 17:11:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 13303 states and 19139 transitions. [2025-02-05 17:11:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 17:11:39,146 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:39,146 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:11:39,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 17:11:39,346 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 [2025-02-05 17:11:39,347 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:39,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 308746920, now seen corresponding path program 1 times [2025-02-05 17:11:39,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:39,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673572087] [2025-02-05 17:11:39,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:39,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 17:11:39,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 17:11:39,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:39,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 17:11:39,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:39,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673572087] [2025-02-05 17:11:39,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673572087] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:39,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422906341] [2025-02-05 17:11:39,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:39,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:39,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:39,411 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) [2025-02-05 17:11:39,412 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 [2025-02-05 17:11:39,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 17:11:39,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 17:11:39,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:39,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:39,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:11:39,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 17:11:39,558 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422906341] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:39,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120741996] [2025-02-05 17:11:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:39,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:39,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:39,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:39,559 INFO L87 Difference]: Start difference. First operand 13303 states and 19139 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2025-02-05 17:11:40,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:40,079 INFO L93 Difference]: Finished difference Result 21651 states and 30916 transitions. [2025-02-05 17:11:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:40,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 164 [2025-02-05 17:11:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:40,118 INFO L225 Difference]: With dead ends: 21651 [2025-02-05 17:11:40,118 INFO L226 Difference]: Without dead ends: 11919 [2025-02-05 17:11:40,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:40,142 INFO L435 NwaCegarLoop]: 4138 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, 4171 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 [2025-02-05 17:11:40,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11919 states. [2025-02-05 17:11:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11919 to 11899. [2025-02-05 17:11:40,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11899 states, 10444 states have (on average 1.4201455381080046) internal successors, (14832), 10536 states have internal predecessors, (14832), 811 states have call successors, (811), 574 states have call predecessors, (811), 642 states have return successors, (1167), 794 states have call predecessors, (1167), 811 states have call successors, (1167) [2025-02-05 17:11:40,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11899 states to 11899 states and 16810 transitions. [2025-02-05 17:11:40,690 INFO L78 Accepts]: Start accepts. Automaton has 11899 states and 16810 transitions. Word has length 164 [2025-02-05 17:11:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:40,691 INFO L471 AbstractCegarLoop]: Abstraction has 11899 states and 16810 transitions. [2025-02-05 17:11:40,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2025-02-05 17:11:40,691 INFO L276 IsEmpty]: Start isEmpty. Operand 11899 states and 16810 transitions. [2025-02-05 17:11:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 17:11:40,710 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:40,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:11:40,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 17:11:40,911 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 [2025-02-05 17:11:40,911 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:40,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:40,912 INFO L85 PathProgramCache]: Analyzing trace with hash -276938393, now seen corresponding path program 1 times [2025-02-05 17:11:40,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:40,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952276370] [2025-02-05 17:11:40,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:40,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:40,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 17:11:40,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 17:11:40,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:40,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 17:11:41,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952276370] [2025-02-05 17:11:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952276370] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983819786] [2025-02-05 17:11:41,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:41,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:41,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:41,008 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) [2025-02-05 17:11:41,012 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 [2025-02-05 17:11:41,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-05 17:11:41,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-05 17:11:41,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:41,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:41,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:11:41,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 17:11:41,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983819786] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:41,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937966101] [2025-02-05 17:11:41,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:41,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:41,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:41,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:41,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:41,151 INFO L87 Difference]: Start difference. First operand 11899 states and 16810 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2025-02-05 17:11:41,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:41,638 INFO L93 Difference]: Finished difference Result 20294 states and 27761 transitions. [2025-02-05 17:11:41,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:41,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 164 [2025-02-05 17:11:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:41,679 INFO L225 Difference]: With dead ends: 20294 [2025-02-05 17:11:41,679 INFO L226 Difference]: Without dead ends: 12833 [2025-02-05 17:11:41,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:41,695 INFO L435 NwaCegarLoop]: 4185 mSDtfsCounter, 4084 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 4351 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 [2025-02-05 17:11:41,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4084 Valid, 4351 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:41,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12833 states. [2025-02-05 17:11:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12833 to 12728. [2025-02-05 17:11:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12728 states, 11231 states have (on average 1.3939097141839552) internal successors, (15655), 11323 states have internal predecessors, (15655), 811 states have call successors, (811), 616 states have call predecessors, (811), 684 states have return successors, (1209), 794 states have call predecessors, (1209), 811 states have call successors, (1209) [2025-02-05 17:11:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12728 states to 12728 states and 17675 transitions. [2025-02-05 17:11:42,194 INFO L78 Accepts]: Start accepts. Automaton has 12728 states and 17675 transitions. Word has length 164 [2025-02-05 17:11:42,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:42,195 INFO L471 AbstractCegarLoop]: Abstraction has 12728 states and 17675 transitions. [2025-02-05 17:11:42,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2025-02-05 17:11:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12728 states and 17675 transitions. [2025-02-05 17:11:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 17:11:42,209 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:42,209 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:11:42,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 17:11:42,410 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 [2025-02-05 17:11:42,410 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:42,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:42,412 INFO L85 PathProgramCache]: Analyzing trace with hash -688111560, now seen corresponding path program 1 times [2025-02-05 17:11:42,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:42,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046662710] [2025-02-05 17:11:42,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:42,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 17:11:42,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 17:11:42,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:42,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 17:11:42,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:42,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046662710] [2025-02-05 17:11:42,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046662710] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:42,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814964945] [2025-02-05 17:11:42,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:42,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:42,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:42,494 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) [2025-02-05 17:11:42,495 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 [2025-02-05 17:11:42,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 17:11:42,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 17:11:42,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:42,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:42,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:11:42,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 17:11:42,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:42,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814964945] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:42,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:42,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732687491] [2025-02-05 17:11:42,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:42,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:42,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:42,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:42,608 INFO L87 Difference]: Start difference. First operand 12728 states and 17675 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, (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) [2025-02-05 17:11:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:43,152 INFO L93 Difference]: Finished difference Result 32632 states and 43853 transitions. [2025-02-05 17:11:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:43,152 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, (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 165 [2025-02-05 17:11:43,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:43,213 INFO L225 Difference]: With dead ends: 32632 [2025-02-05 17:11:43,213 INFO L226 Difference]: Without dead ends: 22047 [2025-02-05 17:11:43,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:43,231 INFO L435 NwaCegarLoop]: 4292 mSDtfsCounter, 139 mSDsluCounter, 4133 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 8425 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 [2025-02-05 17:11:43,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 8425 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22047 states. [2025-02-05 17:11:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22047 to 22045. [2025-02-05 17:11:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22045 states, 19166 states have (on average 1.3391944067619743) internal successors, (25667), 19349 states have internal predecessors, (25667), 1565 states have call successors, (1565), 1176 states have call predecessors, (1565), 1312 states have return successors, (2699), 1531 states have call predecessors, (2699), 1565 states have call successors, (2699) [2025-02-05 17:11:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22045 states to 22045 states and 29931 transitions. [2025-02-05 17:11:43,857 INFO L78 Accepts]: Start accepts. Automaton has 22045 states and 29931 transitions. Word has length 165 [2025-02-05 17:11:43,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:43,857 INFO L471 AbstractCegarLoop]: Abstraction has 22045 states and 29931 transitions. [2025-02-05 17:11:43,857 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, (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) [2025-02-05 17:11:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 22045 states and 29931 transitions. [2025-02-05 17:11:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-05 17:11:43,874 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:43,875 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:11:43,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 17:11:44,079 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 [2025-02-05 17:11:44,079 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:44,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1375426545, now seen corresponding path program 1 times [2025-02-05 17:11:44,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:44,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749072098] [2025-02-05 17:11:44,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:44,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:44,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:11:44,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:11:44,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:44,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-02-05 17:11:44,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:44,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749072098] [2025-02-05 17:11:44,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749072098] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:44,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733354078] [2025-02-05 17:11:44,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:44,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:44,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:44,234 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) [2025-02-05 17:11:44,236 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 [2025-02-05 17:11:44,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:11:44,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:11:44,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:44,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:44,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:11:44,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 17:11:44,359 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:44,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733354078] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:44,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:44,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902440703] [2025-02-05 17:11:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:44,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:44,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:44,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:44,360 INFO L87 Difference]: Start difference. First operand 22045 states and 29931 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2025-02-05 17:11:44,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:44,849 INFO L93 Difference]: Finished difference Result 43215 states and 58408 transitions. [2025-02-05 17:11:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:44,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 166 [2025-02-05 17:11:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:44,915 INFO L225 Difference]: With dead ends: 43215 [2025-02-05 17:11:44,915 INFO L226 Difference]: Without dead ends: 23325 [2025-02-05 17:11:44,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:44,951 INFO L435 NwaCegarLoop]: 4141 mSDtfsCounter, 4096 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 4173 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 [2025-02-05 17:11:44,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4096 Valid, 4173 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23325 states. [2025-02-05 17:11:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23325 to 22045. [2025-02-05 17:11:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22045 states, 19166 states have (on average 1.3141500573933007) internal successors, (25187), 19349 states have internal predecessors, (25187), 1565 states have call successors, (1565), 1176 states have call predecessors, (1565), 1312 states have return successors, (2573), 1531 states have call predecessors, (2573), 1565 states have call successors, (2573) [2025-02-05 17:11:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22045 states to 22045 states and 29325 transitions. [2025-02-05 17:11:45,975 INFO L78 Accepts]: Start accepts. Automaton has 22045 states and 29325 transitions. Word has length 166 [2025-02-05 17:11:45,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:45,976 INFO L471 AbstractCegarLoop]: Abstraction has 22045 states and 29325 transitions. [2025-02-05 17:11:45,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2025-02-05 17:11:45,976 INFO L276 IsEmpty]: Start isEmpty. Operand 22045 states and 29325 transitions. [2025-02-05 17:11:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-05 17:11:45,997 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:45,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:11:46,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 17:11:46,201 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 [2025-02-05 17:11:46,201 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:46,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash -766321137, now seen corresponding path program 1 times [2025-02-05 17:11:46,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:46,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033233070] [2025-02-05 17:11:46,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:46,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:46,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:11:46,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:11:46,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:46,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-02-05 17:11:46,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:46,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033233070] [2025-02-05 17:11:46,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033233070] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:46,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414491] [2025-02-05 17:11:46,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:46,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:46,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:46,271 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) [2025-02-05 17:11:46,274 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 [2025-02-05 17:11:46,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:11:46,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:11:46,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:46,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:46,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:11:46,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 17:11:46,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414491] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:46,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:46,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:46,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238253905] [2025-02-05 17:11:46,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:46,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:46,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:46,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:46,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:46,383 INFO L87 Difference]: Start difference. First operand 22045 states and 29325 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2025-02-05 17:11:47,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:47,915 INFO L93 Difference]: Finished difference Result 59295 states and 77593 transitions. [2025-02-05 17:11:47,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:47,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 166 [2025-02-05 17:11:47,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:48,055 INFO L225 Difference]: With dead ends: 59295 [2025-02-05 17:11:48,055 INFO L226 Difference]: Without dead ends: 39405 [2025-02-05 17:11:48,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:48,106 INFO L435 NwaCegarLoop]: 4290 mSDtfsCounter, 146 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8421 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 [2025-02-05 17:11:48,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 8421 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:48,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39405 states. [2025-02-05 17:11:50,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39405 to 39403. [2025-02-05 17:11:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39403 states, 33872 states have (on average 1.2722307510628248) internal successors, (43093), 34237 states have internal predecessors, (43093), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-02-05 17:11:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39403 states to 39403 states and 51807 transitions. [2025-02-05 17:11:50,359 INFO L78 Accepts]: Start accepts. Automaton has 39403 states and 51807 transitions. Word has length 166 [2025-02-05 17:11:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:50,360 INFO L471 AbstractCegarLoop]: Abstraction has 39403 states and 51807 transitions. [2025-02-05 17:11:50,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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) [2025-02-05 17:11:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 39403 states and 51807 transitions. [2025-02-05 17:11:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-05 17:11:50,429 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:50,429 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2025-02-05 17:11:50,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 17:11:50,637 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 [2025-02-05 17:11:50,638 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:50,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1262156672, now seen corresponding path program 1 times [2025-02-05 17:11:50,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:50,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683450336] [2025-02-05 17:11:50,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:50,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:50,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:11:50,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:11:50,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:50,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-05 17:11:50,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:50,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683450336] [2025-02-05 17:11:50,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683450336] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:50,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640811190] [2025-02-05 17:11:50,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:50,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:50,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:50,753 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) [2025-02-05 17:11:50,755 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 [2025-02-05 17:11:50,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:11:50,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:11:50,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:50,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:50,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:11:50,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 17:11:50,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:50,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640811190] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:50,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:50,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:50,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656350748] [2025-02-05 17:11:50,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:50,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:50,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:50,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:50,875 INFO L87 Difference]: Start difference. First operand 39403 states and 51807 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2025-02-05 17:11:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:52,040 INFO L93 Difference]: Finished difference Result 70693 states and 92129 transitions. [2025-02-05 17:11:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:52,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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 166 [2025-02-05 17:11:52,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:52,172 INFO L225 Difference]: With dead ends: 70693 [2025-02-05 17:11:52,172 INFO L226 Difference]: Without dead ends: 40081 [2025-02-05 17:11:52,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:52,223 INFO L435 NwaCegarLoop]: 4161 mSDtfsCounter, 4092 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 4323 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 [2025-02-05 17:11:52,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 4323 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40081 states. [2025-02-05 17:11:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40081 to 39319. [2025-02-05 17:11:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39319 states, 33788 states have (on average 1.2642062270628625) internal successors, (42715), 34153 states have internal predecessors, (42715), 3017 states have call successors, (3017), 2240 states have call predecessors, (3017), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-02-05 17:11:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39319 states to 39319 states and 51429 transitions. [2025-02-05 17:11:54,171 INFO L78 Accepts]: Start accepts. Automaton has 39319 states and 51429 transitions. Word has length 166 [2025-02-05 17:11:54,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:54,172 INFO L471 AbstractCegarLoop]: Abstraction has 39319 states and 51429 transitions. [2025-02-05 17:11:54,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2025-02-05 17:11:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 39319 states and 51429 transitions. [2025-02-05 17:11:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-05 17:11:54,204 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:54,204 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, 1, 1, 1, 1, 1] [2025-02-05 17:11:54,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 17:11:54,409 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,SelfDestructingSolverStorable15 [2025-02-05 17:11:54,410 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:54,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:54,411 INFO L85 PathProgramCache]: Analyzing trace with hash -558376095, now seen corresponding path program 1 times [2025-02-05 17:11:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:54,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846025426] [2025-02-05 17:11:54,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:54,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:11:54,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:11:54,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:54,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-02-05 17:11:54,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846025426] [2025-02-05 17:11:54,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846025426] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:54,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:11:54,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:11:54,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895877254] [2025-02-05 17:11:54,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:54,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:54,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:54,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:54,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:11:54,457 INFO L87 Difference]: Start difference. First operand 39319 states and 51429 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-02-05 17:11:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:56,178 INFO L93 Difference]: Finished difference Result 69855 states and 90254 transitions. [2025-02-05 17:11:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:56,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 166 [2025-02-05 17:11:56,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:56,263 INFO L225 Difference]: With dead ends: 69855 [2025-02-05 17:11:56,263 INFO L226 Difference]: Without dead ends: 32683 [2025-02-05 17:11:56,306 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 [2025-02-05 17:11:56,307 INFO L435 NwaCegarLoop]: 4136 mSDtfsCounter, 173 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 8094 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 [2025-02-05 17:11:56,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 8094 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32683 states. [2025-02-05 17:11:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32683 to 32683. [2025-02-05 17:11:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32683 states, 28188 states have (on average 1.2751880232723145) internal successors, (35945), 28477 states have internal predecessors, (35945), 2445 states have call successors, (2445), 1832 states have call predecessors, (2445), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-02-05 17:11:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32683 states to 32683 states and 42839 transitions. [2025-02-05 17:11:57,577 INFO L78 Accepts]: Start accepts. Automaton has 32683 states and 42839 transitions. Word has length 166 [2025-02-05 17:11:57,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:11:57,577 INFO L471 AbstractCegarLoop]: Abstraction has 32683 states and 42839 transitions. [2025-02-05 17:11:57,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-02-05 17:11:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 32683 states and 42839 transitions. [2025-02-05 17:11:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 17:11:57,597 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:11:57,597 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, 1, 1, 1, 1, 1, 1] [2025-02-05 17:11:57,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-05 17:11:57,598 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:11:57,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:11:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1163232919, now seen corresponding path program 1 times [2025-02-05 17:11:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:11:57,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367078502] [2025-02-05 17:11:57,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:11:57,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:11:57,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:11:57,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:57,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-02-05 17:11:57,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:11:57,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367078502] [2025-02-05 17:11:57,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367078502] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:11:57,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351855559] [2025-02-05 17:11:57,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:11:57,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:11:57,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:11:57,643 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) [2025-02-05 17:11:57,647 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 [2025-02-05 17:11:57,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:11:57,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:11:57,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:11:57,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:11:57,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:11:57,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:11:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 17:11:57,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:11:57,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351855559] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:11:57,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:11:57,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:11:57,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971425734] [2025-02-05 17:11:57,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:11:57,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:11:57,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:11:57,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:11:57,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:57,766 INFO L87 Difference]: Start difference. First operand 32683 states and 42839 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2025-02-05 17:11:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:11:59,556 INFO L93 Difference]: Finished difference Result 58072 states and 75157 transitions. [2025-02-05 17:11:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:11:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 167 [2025-02-05 17:11:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:11:59,679 INFO L225 Difference]: With dead ends: 58072 [2025-02-05 17:11:59,679 INFO L226 Difference]: Without dead ends: 32993 [2025-02-05 17:11:59,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:11:59,742 INFO L435 NwaCegarLoop]: 4152 mSDtfsCounter, 4090 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4090 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 [2025-02-05 17:11:59,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4090 Valid, 4312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:11:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32993 states. [2025-02-05 17:12:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32993 to 32683. [2025-02-05 17:12:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32683 states, 28188 states have (on average 1.2694408968355329) internal successors, (35783), 28477 states have internal predecessors, (35783), 2445 states have call successors, (2445), 1832 states have call predecessors, (2445), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-02-05 17:12:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32683 states to 32683 states and 42677 transitions. [2025-02-05 17:12:01,899 INFO L78 Accepts]: Start accepts. Automaton has 32683 states and 42677 transitions. Word has length 167 [2025-02-05 17:12:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:12:01,900 INFO L471 AbstractCegarLoop]: Abstraction has 32683 states and 42677 transitions. [2025-02-05 17:12:01,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2025-02-05 17:12:01,900 INFO L276 IsEmpty]: Start isEmpty. Operand 32683 states and 42677 transitions. [2025-02-05 17:12:01,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 17:12:01,937 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:12:01,938 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, 1, 1, 1, 1, 1, 1] [2025-02-05 17:12:01,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 17:12:02,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 17:12:02,142 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:12:02,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:12:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash -971834967, now seen corresponding path program 1 times [2025-02-05 17:12:02,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:12:02,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648819455] [2025-02-05 17:12:02,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:12:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:12:02,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:12:02,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:12:02,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:12:02,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:12:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-02-05 17:12:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:12:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648819455] [2025-02-05 17:12:02,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648819455] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:12:02,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:12:02,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:12:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660774469] [2025-02-05 17:12:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:12:02,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:12:02,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:12:02,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:12:02,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:12:02,172 INFO L87 Difference]: Start difference. First operand 32683 states and 42677 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-02-05 17:12:02,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:12:02,936 INFO L93 Difference]: Finished difference Result 57766 states and 74368 transitions. [2025-02-05 17:12:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:12:02,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 167 [2025-02-05 17:12:02,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:12:03,048 INFO L225 Difference]: With dead ends: 57766 [2025-02-05 17:12:03,048 INFO L226 Difference]: Without dead ends: 27222 [2025-02-05 17:12:03,107 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 [2025-02-05 17:12:03,107 INFO L435 NwaCegarLoop]: 4135 mSDtfsCounter, 171 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 8093 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 [2025-02-05 17:12:03,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 8093 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:12:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27222 states. [2025-02-05 17:12:04,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27222 to 27222. [2025-02-05 17:12:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27222 states, 23569 states have (on average 1.2817259960117102) internal successors, (30209), 23799 states have internal predecessors, (30209), 1983 states have call successors, (1983), 1496 states have call predecessors, (1983), 1668 states have return successors, (3487), 1932 states have call predecessors, (3487), 1983 states have call successors, (3487) [2025-02-05 17:12:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27222 states to 27222 states and 35679 transitions. [2025-02-05 17:12:05,033 INFO L78 Accepts]: Start accepts. Automaton has 27222 states and 35679 transitions. Word has length 167 [2025-02-05 17:12:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:12:05,034 INFO L471 AbstractCegarLoop]: Abstraction has 27222 states and 35679 transitions. [2025-02-05 17:12:05,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2025-02-05 17:12:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 27222 states and 35679 transitions. [2025-02-05 17:12:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-05 17:12:05,052 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:12:05,052 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, 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] [2025-02-05 17:12:05,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-05 17:12:05,052 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:12:05,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:12:05,053 INFO L85 PathProgramCache]: Analyzing trace with hash -301390752, now seen corresponding path program 1 times [2025-02-05 17:12:05,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:12:05,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249571698] [2025-02-05 17:12:05,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:12:05,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:12:05,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 17:12:05,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 17:12:05,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:12:05,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:12:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-02-05 17:12:05,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:12:05,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249571698] [2025-02-05 17:12:05,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249571698] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:12:05,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304311563] [2025-02-05 17:12:05,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:12:05,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:12:05,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:12:05,119 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) [2025-02-05 17:12:05,123 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 [2025-02-05 17:12:05,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 17:12:05,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 17:12:05,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:12:05,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:12:05,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:12:05,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:12:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 17:12:05,271 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:12:05,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304311563] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:12:05,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:12:05,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:12:05,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398146929] [2025-02-05 17:12:05,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:12:05,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:12:05,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:12:05,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:12:05,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:12:05,272 INFO L87 Difference]: Start difference. First operand 27222 states and 35679 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2025-02-05 17:12:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:12:06,564 INFO L93 Difference]: Finished difference Result 46638 states and 61585 transitions. [2025-02-05 17:12:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:12:06,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 170 [2025-02-05 17:12:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:12:06,656 INFO L225 Difference]: With dead ends: 46638 [2025-02-05 17:12:06,656 INFO L226 Difference]: Without dead ends: 27216 [2025-02-05 17:12:06,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:12:06,781 INFO L435 NwaCegarLoop]: 4266 mSDtfsCounter, 124 mSDsluCounter, 4118 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 8384 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:12:06,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 8384 Invalid, 10 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:12:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27216 states. [2025-02-05 17:12:07,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27216 to 27110. [2025-02-05 17:12:07,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27110 states, 23457 states have (on average 1.261926077503517) internal successors, (29601), 23687 states have internal predecessors, (29601), 1983 states have call successors, (1983), 1496 states have call predecessors, (1983), 1668 states have return successors, (3487), 1932 states have call predecessors, (3487), 1983 states have call successors, (3487) [2025-02-05 17:12:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27110 states to 27110 states and 35071 transitions. [2025-02-05 17:12:07,783 INFO L78 Accepts]: Start accepts. Automaton has 27110 states and 35071 transitions. Word has length 170 [2025-02-05 17:12:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:12:07,783 INFO L471 AbstractCegarLoop]: Abstraction has 27110 states and 35071 transitions. [2025-02-05 17:12:07,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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) [2025-02-05 17:12:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 27110 states and 35071 transitions. [2025-02-05 17:12:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-02-05 17:12:07,798 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:12:07,798 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:12:07,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-05 17:12:08,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:12:08,002 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:12:08,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:12:08,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1637278897, now seen corresponding path program 1 times [2025-02-05 17:12:08,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:12:08,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180972968] [2025-02-05 17:12:08,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:12:08,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:12:08,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-02-05 17:12:08,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-02-05 17:12:08,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:12:08,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:12:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-05 17:12:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:12:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180972968] [2025-02-05 17:12:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180972968] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:12:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315527459] [2025-02-05 17:12:08,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:12:08,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:12:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:12:08,058 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 17:12:08,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 17:12:08,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-02-05 17:12:08,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-02-05 17:12:08,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:12:08,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:12:08,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:12:08,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:12:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 17:12:08,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:12:08,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315527459] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:12:08,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:12:08,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:12:08,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728965838] [2025-02-05 17:12:08,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:12:08,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:12:08,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:12:08,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:12:08,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:12:08,235 INFO L87 Difference]: Start difference. First operand 27110 states and 35071 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:12:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:12:09,229 INFO L93 Difference]: Finished difference Result 46448 states and 60529 transitions. [2025-02-05 17:12:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:12:09,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 171 [2025-02-05 17:12:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:12:09,327 INFO L225 Difference]: With dead ends: 46448 [2025-02-05 17:12:09,328 INFO L226 Difference]: Without dead ends: 27104 [2025-02-05 17:12:09,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:12:09,364 INFO L435 NwaCegarLoop]: 4254 mSDtfsCounter, 101 mSDsluCounter, 4116 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 8370 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 [2025-02-05 17:12:09,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 8370 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:12:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27104 states.