./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.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_label43+token_ring.03.cil-2.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 161f5eab054e94dd2ff7a7c46df9e7154542593f1f9d4de13027218e1f7c6216 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:09:23,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:09:23,541 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 17:09:23,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:09:23,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:09:23,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:09:23,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:09:23,565 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:09:23,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:09:23,565 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:09:23,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:09:23,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:09:23,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:09:23,566 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:09:23,567 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:09:23,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:09:23,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:09:23,567 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:09:23,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 17:09:23,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:09:23,567 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:09:23,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:09:23,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:09:23,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:09:23,568 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:09:23,568 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:09:23,568 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:09:23,568 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:09:23,568 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:09:23,568 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:09:23,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:09:23,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:09:23,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:09:23,570 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 -> 161f5eab054e94dd2ff7a7c46df9e7154542593f1f9d4de13027218e1f7c6216 [2025-02-05 17:09:23,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:09:23,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:09:23,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:09:23,795 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:09:23,795 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:09:23,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c [2025-02-05 17:09:24,905 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6a053c55/d1be9af8f78946c1b017ebed77724834/FLAG2ee7ba2f3 [2025-02-05 17:09:25,341 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:09:25,342 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c [2025-02-05 17:09:25,385 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6a053c55/d1be9af8f78946c1b017ebed77724834/FLAG2ee7ba2f3 [2025-02-05 17:09:25,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6a053c55/d1be9af8f78946c1b017ebed77724834 [2025-02-05 17:09:25,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:09:25,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:09:25,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:09:25,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:09:25,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:09:25,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:09:25" (1/1) ... [2025-02-05 17:09:25,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ab789f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:25, skipping insertion in model container [2025-02-05 17:09:25,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:09:25" (1/1) ... [2025-02-05 17:09:25,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:09:26,566 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_label43+token_ring.03.cil-2.c[381679,381692] [2025-02-05 17:09:26,597 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_label43+token_ring.03.cil-2.c[383339,383352] [2025-02-05 17:09:26,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:09:26,794 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:09:27,298 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_label43+token_ring.03.cil-2.c[381679,381692] [2025-02-05 17:09:27,302 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_label43+token_ring.03.cil-2.c[383339,383352] [2025-02-05 17:09:27,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:09:27,363 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:09:27,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27 WrapperNode [2025-02-05 17:09:27,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:09:27,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:09:27,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:09:27,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:09:27,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:27,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:27,704 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12672 [2025-02-05 17:09:27,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:09:27,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:09:27,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:09:27,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:09:27,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:27,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:27,754 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:27,950 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 17:09:27,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:27,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:28,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:28,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:28,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:28,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:28,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:09:28,170 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:09:28,171 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:09:28,171 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:09:28,172 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (1/1) ... [2025-02-05 17:09:28,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:09:28,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:28,200 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 17:09:28,203 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 17:09:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:09:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 17:09:28,222 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 17:09:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 17:09:28,222 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 17:09:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 17:09:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 17:09:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 17:09:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 17:09:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 17:09:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 17:09:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 17:09:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 17:09:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 17:09:28,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:09:28,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:09:28,307 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:09:28,308 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:09:34,219 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-02-05 17:09:34,219 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-02-05 17:09:34,219 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-02-05 17:09:34,219 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-02-05 17:09:34,220 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-02-05 17:09:34,220 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-02-05 17:09:34,221 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-02-05 17:09:34,399 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2025-02-05 17:09:34,399 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:09:34,449 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:09:34,449 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 17:09:34,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:09:34 BoogieIcfgContainer [2025-02-05 17:09:34,450 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:09:34,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:09:34,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:09:34,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:09:34,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:09:25" (1/3) ... [2025-02-05 17:09:34,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4200f1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:09:34, skipping insertion in model container [2025-02-05 17:09:34,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:27" (2/3) ... [2025-02-05 17:09:34,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4200f1ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:09:34, skipping insertion in model container [2025-02-05 17:09:34,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:09:34" (3/3) ... [2025-02-05 17:09:34,459 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.03.cil-2.c [2025-02-05 17:09:34,470 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:09:34,473 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.03.cil-2.c that has 7 procedures, 2348 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2025-02-05 17:09:34,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:09:34,561 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;@8624639, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:09:34,561 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:09:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 2348 states, 2322 states have (on average 1.8496985357450473) internal successors, (4295), 2325 states have internal predecessors, (4295), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-02-05 17:09:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:09:34,581 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:34,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:34,583 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:34,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:34,587 INFO L85 PathProgramCache]: Analyzing trace with hash -487538790, now seen corresponding path program 1 times [2025-02-05 17:09:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:34,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324755880] [2025-02-05 17:09:34,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:34,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:34,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:09:34,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:09:34,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:34,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:34,910 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 17:09:34,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:34,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324755880] [2025-02-05 17:09:34,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324755880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:34,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:34,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:09:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888095578] [2025-02-05 17:09:34,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:34,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:09:34,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:34,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:09:34,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:09:34,938 INFO L87 Difference]: Start difference. First operand has 2348 states, 2322 states have (on average 1.8496985357450473) internal successors, (4295), 2325 states have internal predecessors, (4295), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 17:09:35,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:35,417 INFO L93 Difference]: Finished difference Result 4849 states and 8893 transitions. [2025-02-05 17:09:35,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 17:09:35,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2025-02-05 17:09:35,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:35,447 INFO L225 Difference]: With dead ends: 4849 [2025-02-05 17:09:35,447 INFO L226 Difference]: Without dead ends: 2442 [2025-02-05 17:09:35,458 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 17:09:35,461 INFO L435 NwaCegarLoop]: 4210 mSDtfsCounter, 4419 mSDsluCounter, 8509 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 12719 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:35,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4430 Valid, 12719 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:09:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2025-02-05 17:09:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2431. [2025-02-05 17:09:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2387 states have (on average 1.8236279849183075) internal successors, (4353), 2390 states have internal predecessors, (4353), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-02-05 17:09:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4412 transitions. [2025-02-05 17:09:35,602 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4412 transitions. Word has length 79 [2025-02-05 17:09:35,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:35,602 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4412 transitions. [2025-02-05 17:09:35,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 17:09:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4412 transitions. [2025-02-05 17:09:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:09:35,608 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:35,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:35,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 17:09:35,609 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:35,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:35,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1778468956, now seen corresponding path program 1 times [2025-02-05 17:09:35,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:35,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327593442] [2025-02-05 17:09:35,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:35,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:35,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:09:35,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:09:35,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:35,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:35,793 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 17:09:35,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:35,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327593442] [2025-02-05 17:09:35,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327593442] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:35,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:35,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:09:35,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159792928] [2025-02-05 17:09:35,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:35,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:09:35,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:35,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:09:35,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:09:35,795 INFO L87 Difference]: Start difference. First operand 2431 states and 4412 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:36,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:36,008 INFO L93 Difference]: Finished difference Result 2754 states and 4895 transitions. [2025-02-05 17:09:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:09:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2025-02-05 17:09:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:36,079 INFO L225 Difference]: With dead ends: 2754 [2025-02-05 17:09:36,079 INFO L226 Difference]: Without dead ends: 2455 [2025-02-05 17:09:36,080 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 17:09:36,080 INFO L435 NwaCegarLoop]: 4129 mSDtfsCounter, 4248 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 12322 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:36,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4259 Valid, 12322 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:09:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2025-02-05 17:09:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2431. [2025-02-05 17:09:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2387 states have (on average 1.8227901131126938) internal successors, (4351), 2390 states have internal predecessors, (4351), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2025-02-05 17:09:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4410 transitions. [2025-02-05 17:09:36,148 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4410 transitions. Word has length 79 [2025-02-05 17:09:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:36,149 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4410 transitions. [2025-02-05 17:09:36,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4410 transitions. [2025-02-05 17:09:36,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:09:36,153 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:36,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:36,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 17:09:36,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:36,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -396211141, now seen corresponding path program 1 times [2025-02-05 17:09:36,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:36,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760420819] [2025-02-05 17:09:36,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:36,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:09:36,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:09:36,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:36,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:36,261 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 17:09:36,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:36,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760420819] [2025-02-05 17:09:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760420819] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:36,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:36,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:09:36,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836850406] [2025-02-05 17:09:36,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:36,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:09:36,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:36,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:09:36,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:36,263 INFO L87 Difference]: Start difference. First operand 2431 states and 4410 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:36,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:36,618 INFO L93 Difference]: Finished difference Result 2904 states and 5103 transitions. [2025-02-05 17:09:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:09:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2025-02-05 17:09:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:36,627 INFO L225 Difference]: With dead ends: 2904 [2025-02-05 17:09:36,627 INFO L226 Difference]: Without dead ends: 2605 [2025-02-05 17:09:36,629 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 17:09:36,629 INFO L435 NwaCegarLoop]: 4249 mSDtfsCounter, 4333 mSDsluCounter, 12733 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 16982 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:36,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 16982 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:09:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2025-02-05 17:09:36,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2570. [2025-02-05 17:09:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2507 states have (on average 1.8041483845233346) internal successors, (4523), 2511 states have internal predecessors, (4523), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2025-02-05 17:09:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 4609 transitions. [2025-02-05 17:09:36,694 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 4609 transitions. Word has length 79 [2025-02-05 17:09:36,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:36,695 INFO L471 AbstractCegarLoop]: Abstraction has 2570 states and 4609 transitions. [2025-02-05 17:09:36,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:36,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 4609 transitions. [2025-02-05 17:09:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:09:36,698 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:36,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:36,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 17:09:36,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:36,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2090908634, now seen corresponding path program 1 times [2025-02-05 17:09:36,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:36,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35567424] [2025-02-05 17:09:36,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:36,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:36,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:09:36,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:09:36,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:36,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:36,837 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 17:09:36,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35567424] [2025-02-05 17:09:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35567424] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:09:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342198931] [2025-02-05 17:09:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:36,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:09:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:36,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:09:36,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:36,840 INFO L87 Difference]: Start difference. First operand 2570 states and 4609 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:37,232 INFO L93 Difference]: Finished difference Result 3383 states and 5796 transitions. [2025-02-05 17:09:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:09:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2025-02-05 17:09:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:37,246 INFO L225 Difference]: With dead ends: 3383 [2025-02-05 17:09:37,246 INFO L226 Difference]: Without dead ends: 2945 [2025-02-05 17:09:37,249 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 17:09:37,249 INFO L435 NwaCegarLoop]: 4243 mSDtfsCounter, 4432 mSDsluCounter, 12710 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4447 SdHoareTripleChecker+Valid, 16953 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:37,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4447 Valid, 16953 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:09:37,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2025-02-05 17:09:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2851. [2025-02-05 17:09:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2851 states, 2750 states have (on average 1.7723636363636364) internal successors, (4874), 2758 states have internal predecessors, (4874), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (79), 66 states have call predecessors, (79), 63 states have call successors, (79) [2025-02-05 17:09:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 5016 transitions. [2025-02-05 17:09:37,330 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 5016 transitions. Word has length 79 [2025-02-05 17:09:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:37,330 INFO L471 AbstractCegarLoop]: Abstraction has 2851 states and 5016 transitions. [2025-02-05 17:09:37,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 5016 transitions. [2025-02-05 17:09:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:09:37,333 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:37,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:37,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 17:09:37,333 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:37,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash 924212315, now seen corresponding path program 1 times [2025-02-05 17:09:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:37,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507064362] [2025-02-05 17:09:37,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:37,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:37,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:09:37,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:09:37,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:37,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:37,433 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 17:09:37,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:37,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507064362] [2025-02-05 17:09:37,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507064362] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:37,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:37,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:09:37,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727457282] [2025-02-05 17:09:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:37,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:09:37,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:37,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:09:37,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:09:37,437 INFO L87 Difference]: Start difference. First operand 2851 states and 5016 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:37,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:37,643 INFO L93 Difference]: Finished difference Result 3614 states and 6140 transitions. [2025-02-05 17:09:37,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:09:37,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2025-02-05 17:09:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:37,658 INFO L225 Difference]: With dead ends: 3614 [2025-02-05 17:09:37,658 INFO L226 Difference]: Without dead ends: 2895 [2025-02-05 17:09:37,661 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 17:09:37,662 INFO L435 NwaCegarLoop]: 4120 mSDtfsCounter, 4240 mSDsluCounter, 8174 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4251 SdHoareTripleChecker+Valid, 12294 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:37,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4251 Valid, 12294 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:09:37,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2025-02-05 17:09:37,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 2851. [2025-02-05 17:09:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2851 states, 2750 states have (on average 1.7705454545454546) internal successors, (4869), 2758 states have internal predecessors, (4869), 63 states have call successors, (63), 30 states have call predecessors, (63), 36 states have return successors, (79), 66 states have call predecessors, (79), 63 states have call successors, (79) [2025-02-05 17:09:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 5011 transitions. [2025-02-05 17:09:37,733 INFO L78 Accepts]: Start accepts. Automaton has 2851 states and 5011 transitions. Word has length 79 [2025-02-05 17:09:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:37,733 INFO L471 AbstractCegarLoop]: Abstraction has 2851 states and 5011 transitions. [2025-02-05 17:09:37,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:37,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2851 states and 5011 transitions. [2025-02-05 17:09:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:09:37,735 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:37,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:37,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 17:09:37,735 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:37,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:37,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1025124282, now seen corresponding path program 1 times [2025-02-05 17:09:37,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:37,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162605186] [2025-02-05 17:09:37,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:37,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:37,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:09:37,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:09:37,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:37,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:37,824 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 17:09:37,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:37,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162605186] [2025-02-05 17:09:37,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162605186] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:37,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:37,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:09:37,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028554609] [2025-02-05 17:09:37,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:37,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:09:37,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:37,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:09:37,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:37,825 INFO L87 Difference]: Start difference. First operand 2851 states and 5011 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:38,313 INFO L93 Difference]: Finished difference Result 4230 states and 7016 transitions. [2025-02-05 17:09:38,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:09:38,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2025-02-05 17:09:38,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:38,329 INFO L225 Difference]: With dead ends: 4230 [2025-02-05 17:09:38,330 INFO L226 Difference]: Without dead ends: 3511 [2025-02-05 17:09:38,333 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 17:09:38,334 INFO L435 NwaCegarLoop]: 4235 mSDtfsCounter, 4359 mSDsluCounter, 12687 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 16922 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:38,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 16922 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:09:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2025-02-05 17:09:38,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3419. [2025-02-05 17:09:38,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3238 states have (on average 1.7192711550339717) internal successors, (5567), 3260 states have internal predecessors, (5567), 105 states have call successors, (105), 54 states have call predecessors, (105), 74 states have return successors, (169), 112 states have call predecessors, (169), 105 states have call successors, (169) [2025-02-05 17:09:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5841 transitions. [2025-02-05 17:09:38,476 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5841 transitions. Word has length 79 [2025-02-05 17:09:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:38,477 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5841 transitions. [2025-02-05 17:09:38,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5841 transitions. [2025-02-05 17:09:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:09:38,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:38,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:38,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 17:09:38,481 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:38,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:38,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1305474171, now seen corresponding path program 1 times [2025-02-05 17:09:38,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:38,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679759260] [2025-02-05 17:09:38,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:38,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:09:38,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:09:38,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:38,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:38,562 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 17:09:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:38,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679759260] [2025-02-05 17:09:38,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679759260] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:38,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:38,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:09:38,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515754254] [2025-02-05 17:09:38,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:38,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:09:38,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:38,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:09:38,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:09:38,564 INFO L87 Difference]: Start difference. First operand 3419 states and 5841 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:38,758 INFO L93 Difference]: Finished difference Result 4764 states and 7820 transitions. [2025-02-05 17:09:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:09:38,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2025-02-05 17:09:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:38,776 INFO L225 Difference]: With dead ends: 4764 [2025-02-05 17:09:38,776 INFO L226 Difference]: Without dead ends: 3477 [2025-02-05 17:09:38,780 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 17:09:38,781 INFO L435 NwaCegarLoop]: 4115 mSDtfsCounter, 4236 mSDsluCounter, 8165 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 12280 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:38,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4247 Valid, 12280 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:09:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2025-02-05 17:09:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3419. [2025-02-05 17:09:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3238 states have (on average 1.7164916615194565) internal successors, (5558), 3260 states have internal predecessors, (5558), 105 states have call successors, (105), 54 states have call predecessors, (105), 74 states have return successors, (169), 112 states have call predecessors, (169), 105 states have call successors, (169) [2025-02-05 17:09:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5832 transitions. [2025-02-05 17:09:38,865 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5832 transitions. Word has length 79 [2025-02-05 17:09:38,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:38,866 INFO L471 AbstractCegarLoop]: Abstraction has 3419 states and 5832 transitions. [2025-02-05 17:09:38,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 17:09:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5832 transitions. [2025-02-05 17:09:38,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 17:09:38,868 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:38,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:38,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 17:09:38,868 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:38,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:38,868 INFO L85 PathProgramCache]: Analyzing trace with hash -625144934, now seen corresponding path program 1 times [2025-02-05 17:09:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306471653] [2025-02-05 17:09:38,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:38,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:38,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 17:09:38,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 17:09:38,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:38,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:38,913 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 17:09:38,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:38,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306471653] [2025-02-05 17:09:38,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306471653] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:38,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:38,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 17:09:38,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268225291] [2025-02-05 17:09:38,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:38,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 17:09:38,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:38,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 17:09:38,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 17:09:38,915 INFO L87 Difference]: Start difference. First operand 3419 states and 5832 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 17:09:39,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:39,079 INFO L93 Difference]: Finished difference Result 5943 states and 9555 transitions. [2025-02-05 17:09:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:09:39,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2025-02-05 17:09:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:39,097 INFO L225 Difference]: With dead ends: 5943 [2025-02-05 17:09:39,097 INFO L226 Difference]: Without dead ends: 4657 [2025-02-05 17:09:39,104 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 17:09:39,104 INFO L435 NwaCegarLoop]: 4380 mSDtfsCounter, 4347 mSDsluCounter, 4317 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4347 SdHoareTripleChecker+Valid, 8697 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:39,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4347 Valid, 8697 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:09:39,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2025-02-05 17:09:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 4648. [2025-02-05 17:09:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4292 states have (on average 1.635135135135135) internal successors, (7018), 4343 states have internal predecessors, (7018), 206 states have call successors, (206), 108 states have call predecessors, (206), 148 states have return successors, (327), 204 states have call predecessors, (327), 206 states have call successors, (327) [2025-02-05 17:09:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 7551 transitions. [2025-02-05 17:09:39,292 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 7551 transitions. Word has length 79 [2025-02-05 17:09:39,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:39,292 INFO L471 AbstractCegarLoop]: Abstraction has 4648 states and 7551 transitions. [2025-02-05 17:09:39,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 17:09:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 7551 transitions. [2025-02-05 17:09:39,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 17:09:39,296 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:39,297 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, 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 17:09:39,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 17:09:39,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:39,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1353994054, now seen corresponding path program 1 times [2025-02-05 17:09:39,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:39,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313519433] [2025-02-05 17:09:39,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:39,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:39,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:09:39,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:09:39,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:39,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:09:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:39,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313519433] [2025-02-05 17:09:39,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313519433] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:39,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256266559] [2025-02-05 17:09:39,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:39,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:39,361 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 17:09:39,362 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 17:09:39,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:09:39,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:09:39,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:39,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:39,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:39,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 17:09:39,514 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:39,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256266559] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:39,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:39,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:09:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417069767] [2025-02-05 17:09:39,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:39,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:39,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:39,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:39,516 INFO L87 Difference]: Start difference. First operand 4648 states and 7551 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 17:09:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:39,680 INFO L93 Difference]: Finished difference Result 9587 states and 14641 transitions. [2025-02-05 17:09:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 130 [2025-02-05 17:09:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:39,714 INFO L225 Difference]: With dead ends: 9587 [2025-02-05 17:09:39,714 INFO L226 Difference]: Without dead ends: 7072 [2025-02-05 17:09:39,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 17:09:39,725 INFO L435 NwaCegarLoop]: 4184 mSDtfsCounter, 4140 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4140 SdHoareTripleChecker+Valid, 4386 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 17:09:39,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4140 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:39,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7072 states. [2025-02-05 17:09:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7072 to 7016. [2025-02-05 17:09:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 6328 states have (on average 1.5619469026548674) internal successors, (9884), 6428 states have internal predecessors, (9884), 390 states have call successors, (390), 216 states have call predecessors, (390), 296 states have return successors, (625), 379 states have call predecessors, (625), 390 states have call successors, (625) [2025-02-05 17:09:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 10899 transitions. [2025-02-05 17:09:39,951 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 10899 transitions. Word has length 130 [2025-02-05 17:09:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:39,951 INFO L471 AbstractCegarLoop]: Abstraction has 7016 states and 10899 transitions. [2025-02-05 17:09:39,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 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 17:09:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 10899 transitions. [2025-02-05 17:09:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 17:09:39,958 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:39,958 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, 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 17:09:39,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 17:09:40,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:40,163 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:40,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:40,164 INFO L85 PathProgramCache]: Analyzing trace with hash -928323724, now seen corresponding path program 1 times [2025-02-05 17:09:40,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:40,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073142605] [2025-02-05 17:09:40,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:40,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:40,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:09:40,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:09:40,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:40,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:09:40,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073142605] [2025-02-05 17:09:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073142605] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320093403] [2025-02-05 17:09:40,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:40,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:40,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:40,272 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 17:09:40,274 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 17:09:40,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:09:40,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:09:40,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:40,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:40,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:40,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 17:09:40,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:40,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320093403] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:40,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:40,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:09:40,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322071979] [2025-02-05 17:09:40,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:40,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:40,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:40,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:40,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:40,434 INFO L87 Difference]: Start difference. First operand 7016 states and 10899 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (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 17:09:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:40,742 INFO L93 Difference]: Finished difference Result 16649 states and 24697 transitions. [2025-02-05 17:09:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:40,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (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 130 [2025-02-05 17:09:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:40,782 INFO L225 Difference]: With dead ends: 16649 [2025-02-05 17:09:40,782 INFO L226 Difference]: Without dead ends: 11766 [2025-02-05 17:09:40,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 17:09:40,799 INFO L435 NwaCegarLoop]: 4184 mSDtfsCounter, 4134 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 4386 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 17:09:40,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4134 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11766 states. [2025-02-05 17:09:41,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11766 to 11656. [2025-02-05 17:09:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11656 states, 10306 states have (on average 1.5008732777023093) internal successors, (15468), 10504 states have internal predecessors, (15468), 756 states have call successors, (756), 432 states have call predecessors, (756), 592 states have return successors, (1219), 727 states have call predecessors, (1219), 756 states have call successors, (1219) [2025-02-05 17:09:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 17443 transitions. [2025-02-05 17:09:41,236 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 17443 transitions. Word has length 130 [2025-02-05 17:09:41,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:41,236 INFO L471 AbstractCegarLoop]: Abstraction has 11656 states and 17443 transitions. [2025-02-05 17:09:41,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (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 17:09:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 17443 transitions. [2025-02-05 17:09:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 17:09:41,245 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:41,245 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, 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 17:09:41,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 17:09:41,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:41,450 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:41,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1283469742, now seen corresponding path program 1 times [2025-02-05 17:09:41,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:41,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885924662] [2025-02-05 17:09:41,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:41,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:41,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:09:41,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:09:41,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:41,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:09:41,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885924662] [2025-02-05 17:09:41,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885924662] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079265717] [2025-02-05 17:09:41,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:41,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:41,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:41,513 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 17:09:41,515 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 17:09:41,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:09:41,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:09:41,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:41,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:41,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:41,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 17:09:41,637 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:41,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079265717] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:41,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:41,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:09:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217392477] [2025-02-05 17:09:41,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:41,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:41,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:41,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:41,639 INFO L87 Difference]: Start difference. First operand 11656 states and 17443 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 17:09:42,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:42,354 INFO L93 Difference]: Finished difference Result 30437 states and 44271 transitions. [2025-02-05 17:09:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:42,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 130 [2025-02-05 17:09:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:42,417 INFO L225 Difference]: With dead ends: 30437 [2025-02-05 17:09:42,418 INFO L226 Difference]: Without dead ends: 20914 [2025-02-05 17:09:42,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 17:09:42,444 INFO L435 NwaCegarLoop]: 4184 mSDtfsCounter, 4146 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 4386 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 17:09:42,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:42,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20914 states. [2025-02-05 17:09:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20914 to 20696. [2025-02-05 17:09:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20696 states, 18042 states have (on average 1.4581531980933378) internal successors, (26308), 18436 states have internal predecessors, (26308), 1468 states have call successors, (1468), 864 states have call predecessors, (1468), 1184 states have return successors, (2387), 1403 states have call predecessors, (2387), 1468 states have call successors, (2387) [2025-02-05 17:09:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20696 states to 20696 states and 30163 transitions. [2025-02-05 17:09:43,234 INFO L78 Accepts]: Start accepts. Automaton has 20696 states and 30163 transitions. Word has length 130 [2025-02-05 17:09:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:43,234 INFO L471 AbstractCegarLoop]: Abstraction has 20696 states and 30163 transitions. [2025-02-05 17:09:43,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 17:09:43,235 INFO L276 IsEmpty]: Start isEmpty. Operand 20696 states and 30163 transitions. [2025-02-05 17:09:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-02-05 17:09:43,249 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:43,249 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, 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 17:09:43,255 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 17:09:43,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:43,451 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:43,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1570376472, now seen corresponding path program 1 times [2025-02-05 17:09:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:43,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865583878] [2025-02-05 17:09:43,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:43,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:09:43,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:09:43,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:43,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:09:43,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:43,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865583878] [2025-02-05 17:09:43,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865583878] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:43,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441958202] [2025-02-05 17:09:43,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:43,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:43,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:43,513 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 17:09:43,514 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 17:09:43,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-02-05 17:09:43,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-02-05 17:09:43,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:43,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:43,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:43,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 17:09:43,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:43,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441958202] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:43,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:43,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:43,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930220118] [2025-02-05 17:09:43,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:43,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:43,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:43,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:43,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:43,613 INFO L87 Difference]: Start difference. First operand 20696 states and 30163 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 17:09:44,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:44,635 INFO L93 Difference]: Finished difference Result 56559 states and 81761 transitions. [2025-02-05 17:09:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:44,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 130 [2025-02-05 17:09:44,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:44,788 INFO L225 Difference]: With dead ends: 56559 [2025-02-05 17:09:44,789 INFO L226 Difference]: Without dead ends: 37997 [2025-02-05 17:09:44,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 17:09:44,834 INFO L435 NwaCegarLoop]: 4385 mSDtfsCounter, 197 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8567 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 17:09:44,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 8567 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37997 states. [2025-02-05 17:09:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37997 to 37997. [2025-02-05 17:09:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37997 states, 32912 states have (on average 1.4311193485658726) internal successors, (47101), 33627 states have internal predecessors, (47101), 2753 states have call successors, (2753), 1690 states have call predecessors, (2753), 2330 states have return successors, (5010), 2695 states have call predecessors, (5010), 2753 states have call successors, (5010) [2025-02-05 17:09:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37997 states to 37997 states and 54864 transitions. [2025-02-05 17:09:46,972 INFO L78 Accepts]: Start accepts. Automaton has 37997 states and 54864 transitions. Word has length 130 [2025-02-05 17:09:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:46,974 INFO L471 AbstractCegarLoop]: Abstraction has 37997 states and 54864 transitions. [2025-02-05 17:09:46,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 17:09:46,974 INFO L276 IsEmpty]: Start isEmpty. Operand 37997 states and 54864 transitions. [2025-02-05 17:09:47,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-02-05 17:09:47,041 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:47,042 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, 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, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:47,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 17:09:47,242 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,SelfDestructingSolverStorable11 [2025-02-05 17:09:47,243 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:47,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash -673862789, now seen corresponding path program 1 times [2025-02-05 17:09:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558931919] [2025-02-05 17:09:47,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:47,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:09:47,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:09:47,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:47,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 17:09:47,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:47,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558931919] [2025-02-05 17:09:47,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558931919] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:47,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290121302] [2025-02-05 17:09:47,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:47,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:47,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:47,318 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 17:09:47,320 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 17:09:47,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:09:47,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:09:47,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:47,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:47,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:47,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 17:09:47,508 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290121302] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:47,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:47,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:47,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282882955] [2025-02-05 17:09:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:47,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:47,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:47,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:47,509 INFO L87 Difference]: Start difference. First operand 37997 states and 54864 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 17:09:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:48,480 INFO L93 Difference]: Finished difference Result 62381 states and 89991 transitions. [2025-02-05 17:09:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:48,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 189 [2025-02-05 17:09:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:48,602 INFO L225 Difference]: With dead ends: 62381 [2025-02-05 17:09:48,603 INFO L226 Difference]: Without dead ends: 33881 [2025-02-05 17:09:48,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 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 17:09:48,653 INFO L435 NwaCegarLoop]: 4181 mSDtfsCounter, 4108 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4225 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 17:09:48,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4225 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33881 states. [2025-02-05 17:09:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33881 to 26045. [2025-02-05 17:09:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26045 states, 22856 states have (on average 1.4088641932096604) internal successors, (32201), 23095 states have internal predecessors, (32201), 1809 states have call successors, (1809), 1186 states have call predecessors, (1809), 1378 states have return successors, (2546), 1771 states have call predecessors, (2546), 1809 states have call successors, (2546) [2025-02-05 17:09:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26045 states to 26045 states and 36556 transitions. [2025-02-05 17:09:49,656 INFO L78 Accepts]: Start accepts. Automaton has 26045 states and 36556 transitions. Word has length 189 [2025-02-05 17:09:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:49,656 INFO L471 AbstractCegarLoop]: Abstraction has 26045 states and 36556 transitions. [2025-02-05 17:09:49,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 17:09:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand 26045 states and 36556 transitions. [2025-02-05 17:09:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-02-05 17:09:49,683 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:49,683 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, 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, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:49,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 17:09:49,888 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,SelfDestructingSolverStorable12 [2025-02-05 17:09:49,888 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:49,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1462486276, now seen corresponding path program 1 times [2025-02-05 17:09:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:49,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823681316] [2025-02-05 17:09:49,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:49,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:49,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:09:49,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:09:49,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:49,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 17:09:49,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:49,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823681316] [2025-02-05 17:09:49,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823681316] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:49,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007892788] [2025-02-05 17:09:49,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:49,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:49,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:49,970 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 17:09:49,972 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 17:09:50,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:09:50,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:09:50,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:50,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:50,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:50,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 17:09:50,137 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007892788] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:50,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:50,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126507495] [2025-02-05 17:09:50,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:50,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:50,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:50,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:50,139 INFO L87 Difference]: Start difference. First operand 26045 states and 36556 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 17:09:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:51,040 INFO L93 Difference]: Finished difference Result 52627 states and 73537 transitions. [2025-02-05 17:09:51,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:51,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 189 [2025-02-05 17:09:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:51,127 INFO L225 Difference]: With dead ends: 52627 [2025-02-05 17:09:51,127 INFO L226 Difference]: Without dead ends: 28723 [2025-02-05 17:09:51,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 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 17:09:51,167 INFO L435 NwaCegarLoop]: 4179 mSDtfsCounter, 4125 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4125 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:51,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4125 Valid, 4222 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28723 states. [2025-02-05 17:09:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28723 to 28723. [2025-02-05 17:09:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28723 states, 25330 states have (on average 1.3730359257797078) internal successors, (34779), 25569 states have internal predecessors, (34779), 1867 states have call successors, (1867), 1332 states have call predecessors, (1867), 1524 states have return successors, (2618), 1829 states have call predecessors, (2618), 1867 states have call successors, (2618) [2025-02-05 17:09:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28723 states to 28723 states and 39264 transitions. [2025-02-05 17:09:52,728 INFO L78 Accepts]: Start accepts. Automaton has 28723 states and 39264 transitions. Word has length 189 [2025-02-05 17:09:52,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:52,729 INFO L471 AbstractCegarLoop]: Abstraction has 28723 states and 39264 transitions. [2025-02-05 17:09:52,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 17:09:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 28723 states and 39264 transitions. [2025-02-05 17:09:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-02-05 17:09:52,860 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:52,860 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, 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, 1, 1, 1] [2025-02-05 17:09:52,866 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 17:09:53,060 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,SelfDestructingSolverStorable13 [2025-02-05 17:09:53,061 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:53,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1024898977, now seen corresponding path program 1 times [2025-02-05 17:09:53,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:53,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244369846] [2025-02-05 17:09:53,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:53,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:53,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:09:53,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:09:53,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:53,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 17:09:53,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:53,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244369846] [2025-02-05 17:09:53,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244369846] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:53,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24745479] [2025-02-05 17:09:53,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:53,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:53,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:53,133 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 17:09:53,134 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 17:09:53,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-02-05 17:09:53,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-02-05 17:09:53,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:53,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:53,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:09:53,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-05 17:09:53,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24745479] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:53,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218141682] [2025-02-05 17:09:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:53,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:53,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:53,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:53,267 INFO L87 Difference]: Start difference. First operand 28723 states and 39264 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 17:09:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:54,041 INFO L93 Difference]: Finished difference Result 51390 states and 69066 transitions. [2025-02-05 17:09:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:54,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 189 [2025-02-05 17:09:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:54,140 INFO L225 Difference]: With dead ends: 51390 [2025-02-05 17:09:54,140 INFO L226 Difference]: Without dead ends: 31167 [2025-02-05 17:09:54,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 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 17:09:54,182 INFO L435 NwaCegarLoop]: 4240 mSDtfsCounter, 4117 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4117 SdHoareTripleChecker+Valid, 4449 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 17:09:54,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4117 Valid, 4449 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31167 states. [2025-02-05 17:09:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31167 to 31003. [2025-02-05 17:09:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31003 states, 27466 states have (on average 1.3486856477098959) internal successors, (37043), 27705 states have internal predecessors, (37043), 1895 states have call successors, (1895), 1448 states have call predecessors, (1895), 1640 states have return successors, (2762), 1857 states have call predecessors, (2762), 1895 states have call successors, (2762) [2025-02-05 17:09:55,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31003 states to 31003 states and 41700 transitions. [2025-02-05 17:09:55,561 INFO L78 Accepts]: Start accepts. Automaton has 31003 states and 41700 transitions. Word has length 189 [2025-02-05 17:09:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:55,561 INFO L471 AbstractCegarLoop]: Abstraction has 31003 states and 41700 transitions. [2025-02-05 17:09:55,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 17:09:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 31003 states and 41700 transitions. [2025-02-05 17:09:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2025-02-05 17:09:55,588 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:55,588 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, 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, 1, 1, 1] [2025-02-05 17:09:55,596 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 17:09:55,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:55,793 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:55,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1565769217, now seen corresponding path program 1 times [2025-02-05 17:09:55,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:55,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274873339] [2025-02-05 17:09:55,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:55,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:55,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 190 statements into 1 equivalence classes. [2025-02-05 17:09:55,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 190 of 190 statements. [2025-02-05 17:09:55,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:55,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-05 17:09:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274873339] [2025-02-05 17:09:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274873339] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693939219] [2025-02-05 17:09:55,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:55,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:55,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:55,853 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 17:09:55,854 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 17:09:55,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 190 statements into 1 equivalence classes. [2025-02-05 17:09:55,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 190 of 190 statements. [2025-02-05 17:09:55,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:55,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:55,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:55,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 17:09:55,970 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:55,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693939219] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:55,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:55,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:55,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779558032] [2025-02-05 17:09:55,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:55,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:55,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:55,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:55,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:55,972 INFO L87 Difference]: Start difference. First operand 31003 states and 41700 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, (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 17:09:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:57,608 INFO L93 Difference]: Finished difference Result 85063 states and 113658 transitions. [2025-02-05 17:09:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:57,608 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, (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 190 [2025-02-05 17:09:57,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:57,802 INFO L225 Difference]: With dead ends: 85063 [2025-02-05 17:09:57,802 INFO L226 Difference]: Without dead ends: 56201 [2025-02-05 17:09:57,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 190 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 17:09:57,882 INFO L435 NwaCegarLoop]: 4376 mSDtfsCounter, 179 mSDsluCounter, 4176 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 8552 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 17:09:57,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 8552 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56201 states. [2025-02-05 17:10:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56201 to 56199. [2025-02-05 17:10:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56199 states, 49448 states have (on average 1.3241587121824947) internal successors, (65477), 49925 states have internal predecessors, (65477), 3629 states have call successors, (3629), 2736 states have call predecessors, (3629), 3120 states have return successors, (6322), 3553 states have call predecessors, (6322), 3629 states have call successors, (6322) [2025-02-05 17:10:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56199 states to 56199 states and 75428 transitions. [2025-02-05 17:10:00,926 INFO L78 Accepts]: Start accepts. Automaton has 56199 states and 75428 transitions. Word has length 190 [2025-02-05 17:10:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:10:00,927 INFO L471 AbstractCegarLoop]: Abstraction has 56199 states and 75428 transitions. [2025-02-05 17:10:00,927 INFO L472 AbstractCegarLoop]: INTERPOLANT 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, (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 17:10:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 56199 states and 75428 transitions. [2025-02-05 17:10:00,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-02-05 17:10:00,983 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:10:00,983 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:10:00,989 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 17:10:01,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 17:10:01,187 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:10:01,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:10:01,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1460166588, now seen corresponding path program 1 times [2025-02-05 17:10:01,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:10:01,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359893161] [2025-02-05 17:10:01,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:01,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:10:01,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:10:01,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:10:01,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:01,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 17:10:01,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:10:01,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359893161] [2025-02-05 17:10:01,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359893161] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:10:01,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912148188] [2025-02-05 17:10:01,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:01,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:01,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:10:01,259 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 17:10:01,264 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 17:10:01,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:10:01,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:10:01,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:01,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:01,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:10:01,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:10:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 17:10:01,401 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:10:01,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912148188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:10:01,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:10:01,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:10:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053712861] [2025-02-05 17:10:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:10:01,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:10:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:10:01,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:10:01,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:01,404 INFO L87 Difference]: Start difference. First operand 56199 states and 75428 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 17:10:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:10:03,256 INFO L93 Difference]: Finished difference Result 114137 states and 154137 transitions. [2025-02-05 17:10:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:10:03,256 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 191 [2025-02-05 17:10:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:10:03,423 INFO L225 Difference]: With dead ends: 114137 [2025-02-05 17:10:03,423 INFO L226 Difference]: Without dead ends: 60087 [2025-02-05 17:10:03,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 191 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 17:10:03,490 INFO L435 NwaCegarLoop]: 4187 mSDtfsCounter, 4138 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 4229 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 17:10:03,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4138 Valid, 4229 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:10:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60087 states. [2025-02-05 17:10:05,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60087 to 56199. [2025-02-05 17:10:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56199 states, 49448 states have (on average 1.3044208056948714) internal successors, (64501), 49925 states have internal predecessors, (64501), 3629 states have call successors, (3629), 2736 states have call predecessors, (3629), 3120 states have return successors, (5974), 3553 states have call predecessors, (5974), 3629 states have call successors, (5974) [2025-02-05 17:10:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56199 states to 56199 states and 74104 transitions. [2025-02-05 17:10:05,902 INFO L78 Accepts]: Start accepts. Automaton has 56199 states and 74104 transitions. Word has length 191 [2025-02-05 17:10:05,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:10:05,902 INFO L471 AbstractCegarLoop]: Abstraction has 56199 states and 74104 transitions. [2025-02-05 17:10:05,902 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 17:10:05,902 INFO L276 IsEmpty]: Start isEmpty. Operand 56199 states and 74104 transitions. [2025-02-05 17:10:05,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-02-05 17:10:05,954 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:10:05,954 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, 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, 1, 1, 1, 1, 1] [2025-02-05 17:10:05,960 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 17:10:06,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:06,155 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:10:06,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:10:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash -818246298, now seen corresponding path program 1 times [2025-02-05 17:10:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:10:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791827132] [2025-02-05 17:10:06,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:10:06,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:10:06,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:10:06,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:06,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-05 17:10:06,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:10:06,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791827132] [2025-02-05 17:10:06,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791827132] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:10:06,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928516774] [2025-02-05 17:10:06,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:06,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:06,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:10:06,222 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 17:10:06,223 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 17:10:06,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:10:06,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:10:06,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:06,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:06,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:10:06,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:10:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-05 17:10:06,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:10:06,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928516774] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:10:06,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:10:06,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:10:06,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131975143] [2025-02-05 17:10:06,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:10:06,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:10:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:10:06,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:10:06,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:06,341 INFO L87 Difference]: Start difference. First operand 56199 states and 74104 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 17:10:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:10:10,633 INFO L93 Difference]: Finished difference Result 161711 states and 213472 transitions. [2025-02-05 17:10:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:10:10,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 191 [2025-02-05 17:10:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:10:10,982 INFO L225 Difference]: With dead ends: 161711 [2025-02-05 17:10:10,982 INFO L226 Difference]: Without dead ends: 107661 [2025-02-05 17:10:11,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 191 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 17:10:11,095 INFO L435 NwaCegarLoop]: 4373 mSDtfsCounter, 189 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 8545 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 17:10:11,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 8545 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:10:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107661 states. [2025-02-05 17:10:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107661 to 107659. [2025-02-05 17:10:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107659 states, 94496 states have (on average 1.2842130883846936) internal successors, (121353), 95449 states have internal predecessors, (121353), 7033 states have call successors, (7033), 5360 states have call predecessors, (7033), 6128 states have return successors, (13948), 6881 states have call predecessors, (13948), 7033 states have call successors, (13948) [2025-02-05 17:10:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107659 states to 107659 states and 142334 transitions. [2025-02-05 17:10:16,823 INFO L78 Accepts]: Start accepts. Automaton has 107659 states and 142334 transitions. Word has length 191 [2025-02-05 17:10:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:10:16,823 INFO L471 AbstractCegarLoop]: Abstraction has 107659 states and 142334 transitions. [2025-02-05 17:10:16,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 17:10:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 107659 states and 142334 transitions. [2025-02-05 17:10:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-02-05 17:10:16,929 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:10:16,930 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:10:16,936 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 17:10:17,130 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,SelfDestructingSolverStorable17 [2025-02-05 17:10:17,130 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:10:17,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:10:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash -222433373, now seen corresponding path program 1 times [2025-02-05 17:10:17,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:10:17,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309392358] [2025-02-05 17:10:17,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:17,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:10:17,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:10:17,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:10:17,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:17,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 17:10:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:10:17,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309392358] [2025-02-05 17:10:17,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309392358] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:10:17,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414946508] [2025-02-05 17:10:17,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:17,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:17,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:10:17,184 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 17:10:17,186 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 17:10:17,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:10:17,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:10:17,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:17,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:17,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:10:17,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:10:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 17:10:17,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:10:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414946508] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:10:17,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:10:17,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:10:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240172713] [2025-02-05 17:10:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:10:17,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:10:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:10:17,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:10:17,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:17,388 INFO L87 Difference]: Start difference. First operand 107659 states and 142334 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 17:10:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:10:20,477 INFO L93 Difference]: Finished difference Result 186229 states and 251141 transitions. [2025-02-05 17:10:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:10:20,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 191 [2025-02-05 17:10:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:10:20,842 INFO L225 Difference]: With dead ends: 186229 [2025-02-05 17:10:20,842 INFO L226 Difference]: Without dead ends: 96579 [2025-02-05 17:10:21,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 191 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 17:10:21,201 INFO L435 NwaCegarLoop]: 4174 mSDtfsCounter, 4099 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4099 SdHoareTripleChecker+Valid, 4215 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 17:10:21,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4099 Valid, 4215 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:10:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96579 states. [2025-02-05 17:10:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96579 to 77635. [2025-02-05 17:10:23,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77635 states, 68648 states have (on average 1.2658344015848968) internal successors, (86897), 69033 states have internal predecessors, (86897), 4921 states have call successors, (4921), 3808 states have call predecessors, (4921), 4064 states have return successors, (9076), 4809 states have call predecessors, (9076), 4921 states have call successors, (9076) [2025-02-05 17:10:24,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77635 states to 77635 states and 100894 transitions. [2025-02-05 17:10:24,210 INFO L78 Accepts]: Start accepts. Automaton has 77635 states and 100894 transitions. Word has length 191 [2025-02-05 17:10:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:10:24,211 INFO L471 AbstractCegarLoop]: Abstraction has 77635 states and 100894 transitions. [2025-02-05 17:10:24,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 17:10:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 77635 states and 100894 transitions. [2025-02-05 17:10:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-02-05 17:10:24,262 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:10:24,262 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, 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, 1, 1, 1, 1, 1] [2025-02-05 17:10:24,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 17:10:24,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:24,463 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:10:24,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:10:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1541361663, now seen corresponding path program 1 times [2025-02-05 17:10:24,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:10:24,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111508175] [2025-02-05 17:10:24,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:24,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:10:24,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:10:24,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:10:24,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:24,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-05 17:10:24,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:10:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111508175] [2025-02-05 17:10:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111508175] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:10:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587575412] [2025-02-05 17:10:24,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:24,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:24,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:10:24,529 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 17:10:24,530 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 17:10:24,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-02-05 17:10:24,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-02-05 17:10:24,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:24,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:24,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:10:24,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:10:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 17:10:24,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:10:24,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587575412] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:10:24,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:10:24,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:10:24,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605748186] [2025-02-05 17:10:24,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:10:24,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:10:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:10:24,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:10:24,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:24,648 INFO L87 Difference]: Start difference. First operand 77635 states and 100894 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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)