./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 c7c4bef8c60b810569a22d8a73144498437260dfbc0e4b7320d169bed033790e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:50:52,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:50:52,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:50:52,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:50:52,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:50:52,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:50:52,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:50:52,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:50:52,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:50:52,147 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:50:52,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:50:52,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:50:52,148 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:50:52,148 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:50:52,148 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:50:52,148 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:50:52,148 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:50:52,148 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:50:52,149 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:50:52,150 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:50:52,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:50:52,150 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:50:52,150 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/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 -> c7c4bef8c60b810569a22d8a73144498437260dfbc0e4b7320d169bed033790e [2025-03-08 06:50:52,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:50:52,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:50:52,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:50:52,386 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:50:52,387 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:50:52,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c [2025-03-08 06:50:53,507 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93841247c/d88fd7de6a1748c6802eef38f21fc45a/FLAG64a9eeca4 [2025-03-08 06:50:54,119 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:50:54,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c [2025-03-08 06:50:54,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93841247c/d88fd7de6a1748c6802eef38f21fc45a/FLAG64a9eeca4 [2025-03-08 06:50:54,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93841247c/d88fd7de6a1748c6802eef38f21fc45a [2025-03-08 06:50:54,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:50:54,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:50:54,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:50:54,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:50:54,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:50:54,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:50:54" (1/1) ... [2025-03-08 06:50:54,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37c9112d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:54, skipping insertion in model container [2025-03-08 06:50:54,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:50:54" (1/1) ... [2025-03-08 06:50:54,707 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:50:55,825 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2025-03-08 06:50:55,850 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2025-03-08 06:50:55,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:50:56,004 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:50:56,526 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2025-03-08 06:50:56,534 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2025-03-08 06:50:56,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:50:56,610 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:50:56,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56 WrapperNode [2025-03-08 06:50:56,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:50:56,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:50:56,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:50:56,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:50:56,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:56,698 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:56,944 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12621 [2025-03-08 06:50:56,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:50:56,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:50:56,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:50:56,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:50:56,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:56,955 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,099 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]. [2025-03-08 06:50:57,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,309 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:50:57,413 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:50:57,413 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:50:57,413 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:50:57,414 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (1/1) ... [2025-03-08 06:50:57,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:50:57,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:50:57,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:50:57,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:50:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:50:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-08 06:50:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-08 06:50:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 06:50:57,461 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 06:50:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 06:50:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 06:50:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 06:50:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 06:50:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 06:50:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 06:50:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 06:50:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 06:50:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:50:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 06:50:57,462 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 06:50:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:50:57,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:50:57,536 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:50:57,538 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:51:03,737 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 06:51:03,738 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 06:51:03,739 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 06:51:03,739 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 06:51:03,739 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 06:51:03,739 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 06:51:03,740 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 06:51:04,141 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2025-03-08 06:51:04,141 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:51:04,245 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:51:04,245 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:51:04,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:51:04 BoogieIcfgContainer [2025-03-08 06:51:04,245 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:51:04,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:51:04,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:51:04,256 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:51:04,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:50:54" (1/3) ... [2025-03-08 06:51:04,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d508c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:51:04, skipping insertion in model container [2025-03-08 06:51:04,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:50:56" (2/3) ... [2025-03-08 06:51:04,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d508c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:51:04, skipping insertion in model container [2025-03-08 06:51:04,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:51:04" (3/3) ... [2025-03-08 06:51:04,261 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-2.c [2025-03-08 06:51:04,273 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:51:04,276 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.02.cil-2.c that has 8 procedures, 2321 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-03-08 06:51:04,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:51:04,378 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;@33be4c39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:51:04,379 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 06:51:04,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 2321 states, 2294 states have (on average 1.8548387096774193) internal successors, (4255), 2298 states have internal predecessors, (4255), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-08 06:51:04,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 06:51:04,400 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:04,401 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] [2025-03-08 06:51:04,402 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:04,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash -607926633, now seen corresponding path program 1 times [2025-03-08 06:51:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:04,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244429756] [2025-03-08 06:51:04,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:04,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:04,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 06:51:04,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 06:51:04,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:04,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244429756] [2025-03-08 06:51:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244429756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:04,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:04,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:04,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823345343] [2025-03-08 06:51:04,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:04,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:04,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:04,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:04,774 INFO L87 Difference]: Start difference. First operand has 2321 states, 2294 states have (on average 1.8548387096774193) internal successors, (4255), 2298 states have internal predecessors, (4255), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:05,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:05,088 INFO L93 Difference]: Finished difference Result 4635 states and 8577 transitions. [2025-03-08 06:51:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:05,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2025-03-08 06:51:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:05,116 INFO L225 Difference]: With dead ends: 4635 [2025-03-08 06:51:05,116 INFO L226 Difference]: Without dead ends: 2259 [2025-03-08 06:51:05,127 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 [2025-03-08 06:51:05,130 INFO L435 NwaCegarLoop]: 4165 mSDtfsCounter, 4259 mSDsluCounter, 8271 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4269 SdHoareTripleChecker+Valid, 12436 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:05,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4269 Valid, 12436 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:51:05,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2025-03-08 06:51:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2253. [2025-03-08 06:51:05,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2227 states have (on average 1.8491243825774584) internal successors, (4118), 2230 states have internal predecessors, (4118), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 06:51:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 4152 transitions. [2025-03-08 06:51:05,250 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 4152 transitions. Word has length 67 [2025-03-08 06:51:05,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:05,250 INFO L471 AbstractCegarLoop]: Abstraction has 2253 states and 4152 transitions. [2025-03-08 06:51:05,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 4152 transitions. [2025-03-08 06:51:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 06:51:05,254 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:05,254 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] [2025-03-08 06:51:05,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:51:05,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:05,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:05,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1761507352, now seen corresponding path program 1 times [2025-03-08 06:51:05,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:05,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076827977] [2025-03-08 06:51:05,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:05,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:05,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 06:51:05,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 06:51:05,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:05,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076827977] [2025-03-08 06:51:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076827977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:05,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:05,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100729843] [2025-03-08 06:51:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:05,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:05,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:05,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:05,422 INFO L87 Difference]: Start difference. First operand 2253 states and 4152 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:05,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:05,860 INFO L93 Difference]: Finished difference Result 2511 states and 4542 transitions. [2025-03-08 06:51:05,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:05,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2025-03-08 06:51:05,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:05,870 INFO L225 Difference]: With dead ends: 2511 [2025-03-08 06:51:05,870 INFO L226 Difference]: Without dead ends: 2389 [2025-03-08 06:51:05,872 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 [2025-03-08 06:51:05,872 INFO L435 NwaCegarLoop]: 4204 mSDtfsCounter, 4252 mSDsluCounter, 12599 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4262 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:05,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4262 Valid, 16803 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2025-03-08 06:51:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2375. [2025-03-08 06:51:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2328 states have (on average 1.8346219931271477) internal successors, (4271), 2333 states have internal predecessors, (4271), 31 states have call successors, (31), 13 states have call predecessors, (31), 14 states have return successors, (36), 30 states have call predecessors, (36), 29 states have call successors, (36) [2025-03-08 06:51:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4338 transitions. [2025-03-08 06:51:05,925 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4338 transitions. Word has length 67 [2025-03-08 06:51:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:05,925 INFO L471 AbstractCegarLoop]: Abstraction has 2375 states and 4338 transitions. [2025-03-08 06:51:05,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4338 transitions. [2025-03-08 06:51:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 06:51:05,927 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:05,927 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] [2025-03-08 06:51:05,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:51:05,927 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:05,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1764289929, now seen corresponding path program 1 times [2025-03-08 06:51:05,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:05,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094632988] [2025-03-08 06:51:05,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:05,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 06:51:05,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 06:51:05,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:05,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:06,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:06,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094632988] [2025-03-08 06:51:06,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094632988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:06,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:06,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:06,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710543091] [2025-03-08 06:51:06,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:06,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:06,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:06,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:06,049 INFO L87 Difference]: Start difference. First operand 2375 states and 4338 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:06,426 INFO L93 Difference]: Finished difference Result 2901 states and 5130 transitions. [2025-03-08 06:51:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:06,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2025-03-08 06:51:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:06,439 INFO L225 Difference]: With dead ends: 2901 [2025-03-08 06:51:06,439 INFO L226 Difference]: Without dead ends: 2659 [2025-03-08 06:51:06,441 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 [2025-03-08 06:51:06,441 INFO L435 NwaCegarLoop]: 4176 mSDtfsCounter, 4323 mSDsluCounter, 12525 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4336 SdHoareTripleChecker+Valid, 16701 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:06,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4336 Valid, 16701 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:51:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2025-03-08 06:51:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2599. [2025-03-08 06:51:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2516 states have (on average 1.8100158982511925) internal successors, (4554), 2525 states have internal predecessors, (4554), 51 states have call successors, (51), 25 states have call predecessors, (51), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-03-08 06:51:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 4677 transitions. [2025-03-08 06:51:06,507 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 4677 transitions. Word has length 67 [2025-03-08 06:51:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:06,507 INFO L471 AbstractCegarLoop]: Abstraction has 2599 states and 4677 transitions. [2025-03-08 06:51:06,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:06,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 4677 transitions. [2025-03-08 06:51:06,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 06:51:06,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:06,509 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] [2025-03-08 06:51:06,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:51:06,509 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:06,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:06,510 INFO L85 PathProgramCache]: Analyzing trace with hash -631099336, now seen corresponding path program 1 times [2025-03-08 06:51:06,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:06,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992052598] [2025-03-08 06:51:06,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:06,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 06:51:06,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 06:51:06,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:06,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:06,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:06,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992052598] [2025-03-08 06:51:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992052598] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:06,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:51:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173542550] [2025-03-08 06:51:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:06,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:06,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:06,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:51:06,597 INFO L87 Difference]: Start difference. First operand 2599 states and 4677 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:06,781 INFO L93 Difference]: Finished difference Result 3094 states and 5441 transitions. [2025-03-08 06:51:06,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:06,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2025-03-08 06:51:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:06,793 INFO L225 Difference]: With dead ends: 3094 [2025-03-08 06:51:06,793 INFO L226 Difference]: Without dead ends: 2626 [2025-03-08 06:51:06,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:06,797 INFO L435 NwaCegarLoop]: 4091 mSDtfsCounter, 4185 mSDsluCounter, 8122 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4195 SdHoareTripleChecker+Valid, 12213 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:06,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4195 Valid, 12213 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2025-03-08 06:51:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2599. [2025-03-08 06:51:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2516 states have (on average 1.8080286168521462) internal successors, (4549), 2525 states have internal predecessors, (4549), 51 states have call successors, (51), 25 states have call predecessors, (51), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-03-08 06:51:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 4672 transitions. [2025-03-08 06:51:06,905 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 4672 transitions. Word has length 67 [2025-03-08 06:51:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:06,905 INFO L471 AbstractCegarLoop]: Abstraction has 2599 states and 4672 transitions. [2025-03-08 06:51:06,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 4672 transitions. [2025-03-08 06:51:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 06:51:06,907 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:06,907 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] [2025-03-08 06:51:06,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:51:06,907 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:06,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:06,907 INFO L85 PathProgramCache]: Analyzing trace with hash -871639465, now seen corresponding path program 1 times [2025-03-08 06:51:06,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:06,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152151360] [2025-03-08 06:51:06,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:06,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:06,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 06:51:06,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 06:51:06,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:06,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:06,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:06,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152151360] [2025-03-08 06:51:06,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152151360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:06,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:06,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:51:06,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574943006] [2025-03-08 06:51:06,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:06,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:51:06,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:06,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:51:06,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:06,998 INFO L87 Difference]: Start difference. First operand 2599 states and 4672 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:07,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:07,337 INFO L93 Difference]: Finished difference Result 3559 states and 6119 transitions. [2025-03-08 06:51:07,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:51:07,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2025-03-08 06:51:07,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:07,351 INFO L225 Difference]: With dead ends: 3559 [2025-03-08 06:51:07,351 INFO L226 Difference]: Without dead ends: 3093 [2025-03-08 06:51:07,355 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 [2025-03-08 06:51:07,356 INFO L435 NwaCegarLoop]: 4170 mSDtfsCounter, 4250 mSDsluCounter, 12498 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4263 SdHoareTripleChecker+Valid, 16668 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:07,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4263 Valid, 16668 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:51:07,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2025-03-08 06:51:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3047. [2025-03-08 06:51:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3047 states, 2888 states have (on average 1.7655817174515236) internal successors, (5099), 2911 states have internal predecessors, (5099), 89 states have call successors, (89), 49 states have call predecessors, (89), 68 states have return successors, (166), 94 states have call predecessors, (166), 87 states have call successors, (166) [2025-03-08 06:51:07,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3047 states to 3047 states and 5354 transitions. [2025-03-08 06:51:07,460 INFO L78 Accepts]: Start accepts. Automaton has 3047 states and 5354 transitions. Word has length 67 [2025-03-08 06:51:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:07,460 INFO L471 AbstractCegarLoop]: Abstraction has 3047 states and 5354 transitions. [2025-03-08 06:51:07,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3047 states and 5354 transitions. [2025-03-08 06:51:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 06:51:07,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:07,462 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] [2025-03-08 06:51:07,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:51:07,463 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:07,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash -879398824, now seen corresponding path program 1 times [2025-03-08 06:51:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:07,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955172033] [2025-03-08 06:51:07,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:07,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 06:51:07,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 06:51:07,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:07,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:51:07,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:07,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955172033] [2025-03-08 06:51:07,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955172033] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:07,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:07,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:51:07,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283411765] [2025-03-08 06:51:07,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:07,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:51:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:07,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:51:07,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:51:07,527 INFO L87 Difference]: Start difference. First operand 3047 states and 5354 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:07,810 INFO L93 Difference]: Finished difference Result 4797 states and 8017 transitions. [2025-03-08 06:51:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:51:07,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2025-03-08 06:51:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:07,828 INFO L225 Difference]: With dead ends: 4797 [2025-03-08 06:51:07,828 INFO L226 Difference]: Without dead ends: 3883 [2025-03-08 06:51:07,837 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 [2025-03-08 06:51:07,840 INFO L435 NwaCegarLoop]: 4295 mSDtfsCounter, 4269 mSDsluCounter, 4234 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4269 SdHoareTripleChecker+Valid, 8529 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:07,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4269 Valid, 8529 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:07,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2025-03-08 06:51:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3875. [2025-03-08 06:51:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3875 states, 3567 states have (on average 1.694421082141856) internal successors, (6044), 3618 states have internal predecessors, (6044), 170 states have call successors, (170), 97 states have call predecessors, (170), 136 states have return successors, (311), 167 states have call predecessors, (311), 168 states have call successors, (311) [2025-03-08 06:51:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3875 states to 3875 states and 6525 transitions. [2025-03-08 06:51:08,113 INFO L78 Accepts]: Start accepts. Automaton has 3875 states and 6525 transitions. Word has length 67 [2025-03-08 06:51:08,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:08,113 INFO L471 AbstractCegarLoop]: Abstraction has 3875 states and 6525 transitions. [2025-03-08 06:51:08,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:51:08,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3875 states and 6525 transitions. [2025-03-08 06:51:08,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-08 06:51:08,118 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:08,118 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:08,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:51:08,119 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:08,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:08,124 INFO L85 PathProgramCache]: Analyzing trace with hash -676448741, now seen corresponding path program 1 times [2025-03-08 06:51:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:08,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572744100] [2025-03-08 06:51:08,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:08,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:08,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 06:51:08,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 06:51:08,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:08,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:08,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:08,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572744100] [2025-03-08 06:51:08,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572744100] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:08,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751703184] [2025-03-08 06:51:08,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:08,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:08,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:08,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:08,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 06:51:08,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 06:51:08,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 06:51:08,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:08,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:08,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:08,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 06:51:08,389 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:08,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751703184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:08,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:08,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766170702] [2025-03-08 06:51:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:08,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:08,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:08,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:08,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:08,391 INFO L87 Difference]: Start difference. First operand 3875 states and 6525 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:08,517 INFO L93 Difference]: Finished difference Result 7301 states and 11581 transitions. [2025-03-08 06:51:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:08,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 108 [2025-03-08 06:51:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:08,540 INFO L225 Difference]: With dead ends: 7301 [2025-03-08 06:51:08,541 INFO L226 Difference]: Without dead ends: 5559 [2025-03-08 06:51:08,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:08,549 INFO L435 NwaCegarLoop]: 4146 mSDtfsCounter, 4105 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 4312 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 [2025-03-08 06:51:08,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4105 Valid, 4312 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2025-03-08 06:51:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5539. [2025-03-08 06:51:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5539 states, 4941 states have (on average 1.620319773325238) internal successors, (8006), 5040 states have internal predecessors, (8006), 324 states have call successors, (324), 193 states have call predecessors, (324), 272 states have return successors, (593), 313 states have call predecessors, (593), 322 states have call successors, (593) [2025-03-08 06:51:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5539 states to 5539 states and 8923 transitions. [2025-03-08 06:51:08,766 INFO L78 Accepts]: Start accepts. Automaton has 5539 states and 8923 transitions. Word has length 108 [2025-03-08 06:51:08,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:08,768 INFO L471 AbstractCegarLoop]: Abstraction has 5539 states and 8923 transitions. [2025-03-08 06:51:08,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5539 states and 8923 transitions. [2025-03-08 06:51:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-08 06:51:08,777 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:08,777 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:08,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 06:51:08,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:08,978 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:08,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash -506296031, now seen corresponding path program 1 times [2025-03-08 06:51:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:08,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174475602] [2025-03-08 06:51:08,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:08,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 06:51:08,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 06:51:08,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:08,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:09,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:09,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174475602] [2025-03-08 06:51:09,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174475602] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:09,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33759040] [2025-03-08 06:51:09,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:09,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:09,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:09,051 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:09,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 06:51:09,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 06:51:09,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 06:51:09,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:09,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:09,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:09,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 06:51:09,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:09,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33759040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:09,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:09,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:51:09,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300324315] [2025-03-08 06:51:09,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:09,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:09,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:09,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:09,160 INFO L87 Difference]: Start difference. First operand 5539 states and 8923 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:09,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:09,419 INFO L93 Difference]: Finished difference Result 12237 states and 18745 transitions. [2025-03-08 06:51:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:09,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 108 [2025-03-08 06:51:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:09,450 INFO L225 Difference]: With dead ends: 12237 [2025-03-08 06:51:09,451 INFO L226 Difference]: Without dead ends: 8831 [2025-03-08 06:51:09,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:09,461 INFO L435 NwaCegarLoop]: 4146 mSDtfsCounter, 4111 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4111 SdHoareTripleChecker+Valid, 4312 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 [2025-03-08 06:51:09,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4111 Valid, 4312 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8831 states. [2025-03-08 06:51:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8831 to 8795. [2025-03-08 06:51:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8795 states, 7625 states have (on average 1.5499016393442624) internal successors, (11818), 7820 states have internal predecessors, (11818), 624 states have call successors, (624), 385 states have call predecessors, (624), 544 states have return successors, (1149), 597 states have call predecessors, (1149), 622 states have call successors, (1149) [2025-03-08 06:51:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8795 states to 8795 states and 13591 transitions. [2025-03-08 06:51:09,838 INFO L78 Accepts]: Start accepts. Automaton has 8795 states and 13591 transitions. Word has length 108 [2025-03-08 06:51:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:09,838 INFO L471 AbstractCegarLoop]: Abstraction has 8795 states and 13591 transitions. [2025-03-08 06:51:09,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:51:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 8795 states and 13591 transitions. [2025-03-08 06:51:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-08 06:51:09,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:09,859 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:09,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:10,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-08 06:51:10,061 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:10,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1550712921, now seen corresponding path program 1 times [2025-03-08 06:51:10,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:10,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64171390] [2025-03-08 06:51:10,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:10,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 06:51:10,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 06:51:10,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:10,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:51:10,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:10,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64171390] [2025-03-08 06:51:10,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64171390] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:10,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668698623] [2025-03-08 06:51:10,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:10,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:10,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:10,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:10,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 06:51:10,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 06:51:10,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 06:51:10,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:10,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:10,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:10,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 06:51:10,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:10,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668698623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:10,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:10,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:10,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525320879] [2025-03-08 06:51:10,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:10,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:10,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:10,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:10,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:10,269 INFO L87 Difference]: Start difference. First operand 8795 states and 13591 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 06:51:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:10,652 INFO L93 Difference]: Finished difference Result 21435 states and 32130 transitions. [2025-03-08 06:51:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:10,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 108 [2025-03-08 06:51:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:10,708 INFO L225 Difference]: With dead ends: 21435 [2025-03-08 06:51:10,708 INFO L226 Difference]: Without dead ends: 14775 [2025-03-08 06:51:10,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:10,730 INFO L435 NwaCegarLoop]: 4300 mSDtfsCounter, 151 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 8444 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 [2025-03-08 06:51:10,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 8444 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14775 states. [2025-03-08 06:51:11,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14775 to 14775. [2025-03-08 06:51:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14775 states, 12576 states have (on average 1.4900604325699744) internal successors, (18739), 12932 states have internal predecessors, (18739), 1145 states have call successors, (1145), 733 states have call predecessors, (1145), 1052 states have return successors, (2331), 1125 states have call predecessors, (2331), 1143 states have call successors, (2331) [2025-03-08 06:51:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14775 states to 14775 states and 22215 transitions. [2025-03-08 06:51:11,634 INFO L78 Accepts]: Start accepts. Automaton has 14775 states and 22215 transitions. Word has length 108 [2025-03-08 06:51:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:11,634 INFO L471 AbstractCegarLoop]: Abstraction has 14775 states and 22215 transitions. [2025-03-08 06:51:11,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 06:51:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 14775 states and 22215 transitions. [2025-03-08 06:51:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-08 06:51:11,663 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:11,663 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:11,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 06:51:11,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:11,868 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:11,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash -44132777, now seen corresponding path program 1 times [2025-03-08 06:51:11,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:11,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908645261] [2025-03-08 06:51:11,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:11,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:11,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 06:51:11,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 06:51:11,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:11,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-08 06:51:11,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:11,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908645261] [2025-03-08 06:51:11,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908645261] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:11,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782774588] [2025-03-08 06:51:11,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:11,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:11,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:11,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:11,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 06:51:11,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 06:51:12,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 06:51:12,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:12,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:12,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:12,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 06:51:12,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:12,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782774588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:12,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:12,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501340281] [2025-03-08 06:51:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:12,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:12,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:12,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:12,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:12,096 INFO L87 Difference]: Start difference. First operand 14775 states and 22215 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 06:51:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:12,437 INFO L93 Difference]: Finished difference Result 22921 states and 34477 transitions. [2025-03-08 06:51:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:12,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 156 [2025-03-08 06:51:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:12,481 INFO L225 Difference]: With dead ends: 22921 [2025-03-08 06:51:12,481 INFO L226 Difference]: Without dead ends: 13165 [2025-03-08 06:51:12,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:12,507 INFO L435 NwaCegarLoop]: 4146 mSDtfsCounter, 4102 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4180 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 [2025-03-08 06:51:12,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4180 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13165 states. [2025-03-08 06:51:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13165 to 13061. [2025-03-08 06:51:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13061 states, 11290 states have (on average 1.4647475642161205) internal successors, (16537), 11472 states have internal predecessors, (16537), 967 states have call successors, (967), 651 states have call predecessors, (967), 802 states have return successors, (1595), 947 states have call predecessors, (1595), 965 states have call successors, (1595) [2025-03-08 06:51:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13061 states to 13061 states and 19099 transitions. [2025-03-08 06:51:12,980 INFO L78 Accepts]: Start accepts. Automaton has 13061 states and 19099 transitions. Word has length 156 [2025-03-08 06:51:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:12,982 INFO L471 AbstractCegarLoop]: Abstraction has 13061 states and 19099 transitions. [2025-03-08 06:51:12,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 06:51:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 13061 states and 19099 transitions. [2025-03-08 06:51:13,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-08 06:51:13,001 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:13,001 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:13,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 06:51:13,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:13,202 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:13,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash -282233002, now seen corresponding path program 1 times [2025-03-08 06:51:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:13,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036414578] [2025-03-08 06:51:13,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:13,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 06:51:13,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 06:51:13,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:13,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-08 06:51:13,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036414578] [2025-03-08 06:51:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036414578] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440524504] [2025-03-08 06:51:13,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:13,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:13,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:13,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:13,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 06:51:13,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 06:51:13,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 06:51:13,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:13,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:13,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:51:13,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-08 06:51:13,472 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440524504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:13,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:13,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:13,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453719190] [2025-03-08 06:51:13,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:13,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:13,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:13,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:13,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:13,476 INFO L87 Difference]: Start difference. First operand 13061 states and 19099 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:51:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:13,953 INFO L93 Difference]: Finished difference Result 22590 states and 32172 transitions. [2025-03-08 06:51:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:13,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2025-03-08 06:51:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:13,996 INFO L225 Difference]: With dead ends: 22590 [2025-03-08 06:51:13,996 INFO L226 Difference]: Without dead ends: 14225 [2025-03-08 06:51:14,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:14,014 INFO L435 NwaCegarLoop]: 4189 mSDtfsCounter, 4083 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:14,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 4362 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:14,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14225 states. [2025-03-08 06:51:14,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14225 to 14123. [2025-03-08 06:51:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14123 states, 12272 states have (on average 1.4327737940026075) internal successors, (17583), 12454 states have internal predecessors, (17583), 981 states have call successors, (981), 717 states have call predecessors, (981), 868 states have return successors, (1675), 961 states have call predecessors, (1675), 979 states have call successors, (1675) [2025-03-08 06:51:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14123 states to 14123 states and 20239 transitions. [2025-03-08 06:51:14,485 INFO L78 Accepts]: Start accepts. Automaton has 14123 states and 20239 transitions. Word has length 156 [2025-03-08 06:51:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:14,486 INFO L471 AbstractCegarLoop]: Abstraction has 14123 states and 20239 transitions. [2025-03-08 06:51:14,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:51:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 14123 states and 20239 transitions. [2025-03-08 06:51:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 06:51:14,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:14,505 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:14,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:14,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 06:51:14,709 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:14,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:14,709 INFO L85 PathProgramCache]: Analyzing trace with hash 282653733, now seen corresponding path program 1 times [2025-03-08 06:51:14,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:14,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822375720] [2025-03-08 06:51:14,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:14,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:51:14,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:51:14,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:14,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-08 06:51:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822375720] [2025-03-08 06:51:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822375720] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330660558] [2025-03-08 06:51:14,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:14,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:14,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:14,777 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:14,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 06:51:14,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:51:14,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:51:14,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:14,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:14,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:14,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-08 06:51:14,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330660558] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:14,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:14,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:14,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935494831] [2025-03-08 06:51:14,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:14,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:14,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:14,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:14,884 INFO L87 Difference]: Start difference. First operand 14123 states and 20239 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:51:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:15,834 INFO L93 Difference]: Finished difference Result 37487 states and 52403 transitions. [2025-03-08 06:51:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:15,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 157 [2025-03-08 06:51:15,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:15,916 INFO L225 Difference]: With dead ends: 37487 [2025-03-08 06:51:15,916 INFO L226 Difference]: Without dead ends: 25507 [2025-03-08 06:51:15,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:15,941 INFO L435 NwaCegarLoop]: 4307 mSDtfsCounter, 150 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 8445 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 [2025-03-08 06:51:15,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 8445 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:15,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25507 states. [2025-03-08 06:51:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25507 to 25475. [2025-03-08 06:51:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25475 states, 21862 states have (on average 1.3825359070533345) internal successors, (30225), 22224 states have internal predecessors, (30225), 1903 states have call successors, (1903), 1405 states have call predecessors, (1903), 1708 states have return successors, (3703), 1865 states have call predecessors, (3703), 1901 states have call successors, (3703) [2025-03-08 06:51:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25475 states to 25475 states and 35831 transitions. [2025-03-08 06:51:16,870 INFO L78 Accepts]: Start accepts. Automaton has 25475 states and 35831 transitions. Word has length 157 [2025-03-08 06:51:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:16,870 INFO L471 AbstractCegarLoop]: Abstraction has 25475 states and 35831 transitions. [2025-03-08 06:51:16,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:51:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 25475 states and 35831 transitions. [2025-03-08 06:51:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 06:51:16,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:16,901 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:16,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:17,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:17,102 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:17,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:17,104 INFO L85 PathProgramCache]: Analyzing trace with hash -262376633, now seen corresponding path program 1 times [2025-03-08 06:51:17,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:17,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734865073] [2025-03-08 06:51:17,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:17,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:17,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:51:17,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:51:17,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:17,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-08 06:51:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734865073] [2025-03-08 06:51:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734865073] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431129513] [2025-03-08 06:51:17,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:17,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:17,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 06:51:17,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 06:51:17,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 06:51:17,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:17,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:17,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:17,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-08 06:51:17,341 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:17,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431129513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:17,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:17,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:17,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324489773] [2025-03-08 06:51:17,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:17,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:17,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:17,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:17,342 INFO L87 Difference]: Start difference. First operand 25475 states and 35831 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, (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) [2025-03-08 06:51:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:18,173 INFO L93 Difference]: Finished difference Result 39959 states and 56689 transitions. [2025-03-08 06:51:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:18,174 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, (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 157 [2025-03-08 06:51:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:18,253 INFO L225 Difference]: With dead ends: 39959 [2025-03-08 06:51:18,253 INFO L226 Difference]: Without dead ends: 21551 [2025-03-08 06:51:18,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:18,296 INFO L435 NwaCegarLoop]: 4140 mSDtfsCounter, 4079 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:18,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4079 Valid, 4173 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21551 states. [2025-03-08 06:51:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21551 to 21483. [2025-03-08 06:51:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21483 states, 18602 states have (on average 1.3607676593914633) internal successors, (25313), 18786 states have internal predecessors, (25313), 1567 states have call successors, (1567), 1177 states have call predecessors, (1567), 1312 states have return successors, (2699), 1531 states have call predecessors, (2699), 1565 states have call successors, (2699) [2025-03-08 06:51:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21483 states to 21483 states and 29579 transitions. [2025-03-08 06:51:19,130 INFO L78 Accepts]: Start accepts. Automaton has 21483 states and 29579 transitions. Word has length 157 [2025-03-08 06:51:19,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:19,131 INFO L471 AbstractCegarLoop]: Abstraction has 21483 states and 29579 transitions. [2025-03-08 06:51:19,131 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, (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) [2025-03-08 06:51:19,131 INFO L276 IsEmpty]: Start isEmpty. Operand 21483 states and 29579 transitions. [2025-03-08 06:51:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-08 06:51:19,149 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:19,149 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:19,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 06:51:19,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:19,350 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:19,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:19,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1939222210, now seen corresponding path program 1 times [2025-03-08 06:51:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:19,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49514299] [2025-03-08 06:51:19,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:19,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:19,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:51:19,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:51:19,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:19,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-08 06:51:19,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:19,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49514299] [2025-03-08 06:51:19,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49514299] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:19,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868310193] [2025-03-08 06:51:19,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:19,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:19,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:19,422 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:19,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 06:51:19,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:51:19,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:51:19,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:19,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:19,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:19,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 06:51:19,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:19,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868310193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:19,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:19,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694613717] [2025-03-08 06:51:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:19,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:19,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:19,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:19,646 INFO L87 Difference]: Start difference. First operand 21483 states and 29579 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:51:20,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:20,279 INFO L93 Difference]: Finished difference Result 42091 states and 57704 transitions. [2025-03-08 06:51:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:20,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 158 [2025-03-08 06:51:20,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:20,354 INFO L225 Difference]: With dead ends: 42091 [2025-03-08 06:51:20,355 INFO L226 Difference]: Without dead ends: 22763 [2025-03-08 06:51:20,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:20,389 INFO L435 NwaCegarLoop]: 4145 mSDtfsCounter, 4103 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4103 SdHoareTripleChecker+Valid, 4177 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:20,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4103 Valid, 4177 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:51:20,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22763 states. [2025-03-08 06:51:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22763 to 21483. [2025-03-08 06:51:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21483 states, 18602 states have (on average 1.3349639823674873) internal successors, (24833), 18786 states have internal predecessors, (24833), 1567 states have call successors, (1567), 1177 states have call predecessors, (1567), 1312 states have return successors, (2573), 1531 states have call predecessors, (2573), 1565 states have call successors, (2573) [2025-03-08 06:51:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21483 states to 21483 states and 28973 transitions. [2025-03-08 06:51:21,136 INFO L78 Accepts]: Start accepts. Automaton has 21483 states and 28973 transitions. Word has length 158 [2025-03-08 06:51:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:21,136 INFO L471 AbstractCegarLoop]: Abstraction has 21483 states and 28973 transitions. [2025-03-08 06:51:21,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:51:21,136 INFO L276 IsEmpty]: Start isEmpty. Operand 21483 states and 28973 transitions. [2025-03-08 06:51:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-08 06:51:21,153 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:21,153 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:21,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:21,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 06:51:21,354 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:21,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:21,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1206560514, now seen corresponding path program 1 times [2025-03-08 06:51:21,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:21,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193956740] [2025-03-08 06:51:21,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:21,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:21,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:51:21,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:51:21,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:21,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-03-08 06:51:21,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:21,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193956740] [2025-03-08 06:51:21,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193956740] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:21,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945516181] [2025-03-08 06:51:21,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:21,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:21,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:21,481 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:21,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 06:51:21,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:51:21,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:51:21,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:21,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:21,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:51:21,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 06:51:21,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945516181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:21,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:21,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243802808] [2025-03-08 06:51:21,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:21,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:21,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:21,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:21,605 INFO L87 Difference]: Start difference. First operand 21483 states and 28973 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:51:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:22,832 INFO L93 Difference]: Finished difference Result 57817 states and 76745 transitions. [2025-03-08 06:51:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:22,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 158 [2025-03-08 06:51:22,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:22,947 INFO L225 Difference]: With dead ends: 57817 [2025-03-08 06:51:22,947 INFO L226 Difference]: Without dead ends: 38489 [2025-03-08 06:51:22,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:22,983 INFO L435 NwaCegarLoop]: 4299 mSDtfsCounter, 153 mSDsluCounter, 4134 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 8433 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 [2025-03-08 06:51:22,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 8433 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:23,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38489 states. [2025-03-08 06:51:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38489 to 38485. [2025-03-08 06:51:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38485 states, 32952 states have (on average 1.2925770818159747) internal successors, (42593), 33318 states have internal predecessors, (42593), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-03-08 06:51:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38485 states to 38485 states and 51309 transitions. [2025-03-08 06:51:24,387 INFO L78 Accepts]: Start accepts. Automaton has 38485 states and 51309 transitions. Word has length 158 [2025-03-08 06:51:24,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:24,387 INFO L471 AbstractCegarLoop]: Abstraction has 38485 states and 51309 transitions. [2025-03-08 06:51:24,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:51:24,387 INFO L276 IsEmpty]: Start isEmpty. Operand 38485 states and 51309 transitions. [2025-03-08 06:51:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-08 06:51:24,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:24,504 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:24,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-08 06:51:24,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 06:51:24,705 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:24,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1099383188, now seen corresponding path program 1 times [2025-03-08 06:51:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016367045] [2025-03-08 06:51:24,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:24,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:51:24,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:51:24,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:24,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-08 06:51:24,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016367045] [2025-03-08 06:51:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016367045] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735972521] [2025-03-08 06:51:24,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:24,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:24,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:24,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:24,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 06:51:24,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:51:24,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:51:24,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:24,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:24,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:51:24,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-08 06:51:24,919 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:24,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735972521] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:24,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:24,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:24,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308642973] [2025-03-08 06:51:24,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:24,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:24,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:24,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:24,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:24,922 INFO L87 Difference]: Start difference. First operand 38485 states and 51309 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:51:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:26,724 INFO L93 Difference]: Finished difference Result 68939 states and 91135 transitions. [2025-03-08 06:51:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 158 [2025-03-08 06:51:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:26,845 INFO L225 Difference]: With dead ends: 68939 [2025-03-08 06:51:26,845 INFO L226 Difference]: Without dead ends: 39109 [2025-03-08 06:51:26,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:26,892 INFO L435 NwaCegarLoop]: 4164 mSDtfsCounter, 4098 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4330 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:26,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4330 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:26,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39109 states. [2025-03-08 06:51:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39109 to 38401. [2025-03-08 06:51:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38401 states, 32868 states have (on average 1.2843799440184982) internal successors, (42215), 33234 states have internal predecessors, (42215), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-03-08 06:51:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38401 states to 38401 states and 50931 transitions. [2025-03-08 06:51:28,401 INFO L78 Accepts]: Start accepts. Automaton has 38401 states and 50931 transitions. Word has length 158 [2025-03-08 06:51:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:28,402 INFO L471 AbstractCegarLoop]: Abstraction has 38401 states and 50931 transitions. [2025-03-08 06:51:28,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:51:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 38401 states and 50931 transitions. [2025-03-08 06:51:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-08 06:51:28,432 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:28,432 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:28,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:28,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 06:51:28,637 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:28,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1417165865, now seen corresponding path program 1 times [2025-03-08 06:51:28,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:28,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561353107] [2025-03-08 06:51:28,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:28,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 06:51:28,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 06:51:28,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:28,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-08 06:51:28,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:28,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561353107] [2025-03-08 06:51:28,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561353107] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:28,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:28,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:51:28,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145373333] [2025-03-08 06:51:28,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:28,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:28,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:28,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:51:28,671 INFO L87 Difference]: Start difference. First operand 38401 states and 50931 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 06:51:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:29,634 INFO L93 Difference]: Finished difference Result 68155 states and 89314 transitions. [2025-03-08 06:51:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:29,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 158 [2025-03-08 06:51:29,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:29,747 INFO L225 Difference]: With dead ends: 68155 [2025-03-08 06:51:29,748 INFO L226 Difference]: Without dead ends: 31901 [2025-03-08 06:51:29,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:51:29,815 INFO L435 NwaCegarLoop]: 4140 mSDtfsCounter, 177 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 8098 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:29,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 8098 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31901 states. [2025-03-08 06:51:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31901 to 31901. [2025-03-08 06:51:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31901 states, 27404 states have (on average 1.2954678149175303) internal successors, (35501), 27694 states have internal predecessors, (35501), 2447 states have call successors, (2447), 1833 states have call predecessors, (2447), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-03-08 06:51:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31901 states to 31901 states and 42397 transitions. [2025-03-08 06:51:31,694 INFO L78 Accepts]: Start accepts. Automaton has 31901 states and 42397 transitions. Word has length 158 [2025-03-08 06:51:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:31,694 INFO L471 AbstractCegarLoop]: Abstraction has 31901 states and 42397 transitions. [2025-03-08 06:51:31,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 06:51:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 31901 states and 42397 transitions. [2025-03-08 06:51:31,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-08 06:51:31,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:31,714 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:31,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 06:51:31,714 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:31,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash -760507816, now seen corresponding path program 1 times [2025-03-08 06:51:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:31,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669032720] [2025-03-08 06:51:31,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:31,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 06:51:31,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 06:51:31,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:31,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-08 06:51:31,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:31,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669032720] [2025-03-08 06:51:31,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669032720] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:31,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640145550] [2025-03-08 06:51:31,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:31,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:31,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:31,768 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:31,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 06:51:31,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 06:51:31,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 06:51:31,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:31,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:31,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:51:31,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 06:51:31,888 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640145550] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:31,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837498576] [2025-03-08 06:51:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:31,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:31,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:31,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:31,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:31,890 INFO L87 Difference]: Start difference. First operand 31901 states and 42397 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:51:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:33,313 INFO L93 Difference]: Finished difference Result 56584 states and 74284 transitions. [2025-03-08 06:51:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:33,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2025-03-08 06:51:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:33,447 INFO L225 Difference]: With dead ends: 56584 [2025-03-08 06:51:33,447 INFO L226 Difference]: Without dead ends: 32169 [2025-03-08 06:51:33,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:33,507 INFO L435 NwaCegarLoop]: 4166 mSDtfsCounter, 4100 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 4330 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:33,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4100 Valid, 4330 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32169 states. [2025-03-08 06:51:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32169 to 31901. [2025-03-08 06:51:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31901 states, 27404 states have (on average 1.289556269157787) internal successors, (35339), 27694 states have internal predecessors, (35339), 2447 states have call successors, (2447), 1833 states have call predecessors, (2447), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-03-08 06:51:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31901 states to 31901 states and 42235 transitions. [2025-03-08 06:51:35,317 INFO L78 Accepts]: Start accepts. Automaton has 31901 states and 42235 transitions. Word has length 159 [2025-03-08 06:51:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:35,317 INFO L471 AbstractCegarLoop]: Abstraction has 31901 states and 42235 transitions. [2025-03-08 06:51:35,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 06:51:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 31901 states and 42235 transitions. [2025-03-08 06:51:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-08 06:51:35,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:35,335 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:35,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:35,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 06:51:35,536 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:35,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:35,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1320728280, now seen corresponding path program 1 times [2025-03-08 06:51:35,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:35,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417156456] [2025-03-08 06:51:35,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:35,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:35,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 06:51:35,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 06:51:35,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:35,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-08 06:51:35,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417156456] [2025-03-08 06:51:35,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417156456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:35,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:51:35,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 06:51:35,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105039210] [2025-03-08 06:51:35,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:35,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:35,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:35,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:51:35,570 INFO L87 Difference]: Start difference. First operand 31901 states and 42235 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 06:51:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:36,421 INFO L93 Difference]: Finished difference Result 56320 states and 73537 transitions. [2025-03-08 06:51:36,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:36,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 159 [2025-03-08 06:51:36,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:36,528 INFO L225 Difference]: With dead ends: 56320 [2025-03-08 06:51:36,529 INFO L226 Difference]: Without dead ends: 26558 [2025-03-08 06:51:36,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 06:51:36,580 INFO L435 NwaCegarLoop]: 4139 mSDtfsCounter, 175 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 8097 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:36,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 8097 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:36,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26558 states. [2025-03-08 06:51:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26558 to 26558. [2025-03-08 06:51:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26558 states, 22903 states have (on average 1.301925511941667) internal successors, (29818), 23134 states have internal predecessors, (29818), 1985 states have call successors, (1985), 1497 states have call predecessors, (1985), 1668 states have return successors, (3487), 1932 states have call predecessors, (3487), 1983 states have call successors, (3487) [2025-03-08 06:51:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26558 states to 26558 states and 35290 transitions. [2025-03-08 06:51:37,728 INFO L78 Accepts]: Start accepts. Automaton has 26558 states and 35290 transitions. Word has length 159 [2025-03-08 06:51:37,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:37,729 INFO L471 AbstractCegarLoop]: Abstraction has 26558 states and 35290 transitions. [2025-03-08 06:51:37,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 06:51:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 26558 states and 35290 transitions. [2025-03-08 06:51:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-08 06:51:37,745 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:37,745 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:37,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 06:51:37,745 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:37,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash -154720142, now seen corresponding path program 1 times [2025-03-08 06:51:37,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:37,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056615586] [2025-03-08 06:51:37,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:37,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:37,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-08 06:51:37,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-08 06:51:37,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:37,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-08 06:51:37,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:37,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056615586] [2025-03-08 06:51:37,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056615586] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:37,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14476863] [2025-03-08 06:51:37,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:37,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:37,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:37,810 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:37,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 06:51:37,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-08 06:51:37,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-08 06:51:37,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:37,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:37,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:51:37,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-08 06:51:37,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:37,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14476863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:37,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:37,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:37,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611075876] [2025-03-08 06:51:37,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:37,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:37,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:37,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:37,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:37,942 INFO L87 Difference]: Start difference. First operand 26558 states and 35290 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:51:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:39,127 INFO L93 Difference]: Finished difference Result 45450 states and 60882 transitions. [2025-03-08 06:51:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:39,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2025-03-08 06:51:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:39,236 INFO L225 Difference]: With dead ends: 45450 [2025-03-08 06:51:39,237 INFO L226 Difference]: Without dead ends: 26574 [2025-03-08 06:51:39,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:39,281 INFO L435 NwaCegarLoop]: 4275 mSDtfsCounter, 132 mSDsluCounter, 4122 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 8397 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:39,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 8397 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26574 states. [2025-03-08 06:51:40,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26574 to 26478. [2025-03-08 06:51:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26478 states, 22823 states have (on average 1.2812513692327916) internal successors, (29242), 23054 states have internal predecessors, (29242), 1985 states have call successors, (1985), 1497 states have call predecessors, (1985), 1668 states have return successors, (3487), 1932 states have call predecessors, (3487), 1983 states have call successors, (3487) [2025-03-08 06:51:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26478 states to 26478 states and 34714 transitions. [2025-03-08 06:51:40,886 INFO L78 Accepts]: Start accepts. Automaton has 26478 states and 34714 transitions. Word has length 162 [2025-03-08 06:51:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:40,887 INFO L471 AbstractCegarLoop]: Abstraction has 26478 states and 34714 transitions. [2025-03-08 06:51:40,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 06:51:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 26478 states and 34714 transitions. [2025-03-08 06:51:40,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-08 06:51:40,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:40,901 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-08 06:51:40,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-08 06:51:41,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:41,101 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:41,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash -952618566, now seen corresponding path program 1 times [2025-03-08 06:51:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196306892] [2025-03-08 06:51:41,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:41,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-08 06:51:41,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-08 06:51:41,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:41,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-08 06:51:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:41,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196306892] [2025-03-08 06:51:41,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196306892] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:41,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38963939] [2025-03-08 06:51:41,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:41,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:41,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:41,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:41,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 06:51:41,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-08 06:51:41,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-08 06:51:41,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:41,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:41,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 06:51:41,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-08 06:51:41,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:41,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38963939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:41,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:41,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-03-08 06:51:41,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169977691] [2025-03-08 06:51:41,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:41,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:51:41,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:41,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:51:41,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:41,302 INFO L87 Difference]: Start difference. First operand 26478 states and 34714 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2025-03-08 06:51:42,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:42,144 INFO L93 Difference]: Finished difference Result 45316 states and 59882 transitions. [2025-03-08 06:51:42,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:51:42,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 163 [2025-03-08 06:51:42,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:42,243 INFO L225 Difference]: With dead ends: 45316 [2025-03-08 06:51:42,243 INFO L226 Difference]: Without dead ends: 26494 [2025-03-08 06:51:42,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:51:42,283 INFO L435 NwaCegarLoop]: 4251 mSDtfsCounter, 109 mSDsluCounter, 4120 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 8371 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:42,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 8371 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:51:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26494 states. [2025-03-08 06:51:43,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26494 to 26398. [2025-03-08 06:51:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26398 states, 22743 states have (on average 1.2604317812074044) internal successors, (28666), 22974 states have internal predecessors, (28666), 1985 states have call successors, (1985), 1497 states have call predecessors, (1985), 1668 states have return successors, (3487), 1932 states have call predecessors, (3487), 1983 states have call successors, (3487) [2025-03-08 06:51:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26398 states to 26398 states and 34138 transitions. [2025-03-08 06:51:43,373 INFO L78 Accepts]: Start accepts. Automaton has 26398 states and 34138 transitions. Word has length 163 [2025-03-08 06:51:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:43,374 INFO L471 AbstractCegarLoop]: Abstraction has 26398 states and 34138 transitions. [2025-03-08 06:51:43,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2025-03-08 06:51:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand 26398 states and 34138 transitions. [2025-03-08 06:51:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-08 06:51:43,387 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:43,387 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:43,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-08 06:51:43,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-08 06:51:43,588 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:43,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1097230547, now seen corresponding path program 1 times [2025-03-08 06:51:43,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:43,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119869669] [2025-03-08 06:51:43,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:43,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:43,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-08 06:51:43,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-08 06:51:43,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:43,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-08 06:51:43,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119869669] [2025-03-08 06:51:43,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119869669] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:43,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204369126] [2025-03-08 06:51:43,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:43,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:43,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:43,636 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:43,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 06:51:43,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-08 06:51:43,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-08 06:51:43,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:43,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:43,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 06:51:43,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-08 06:51:43,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:43,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204369126] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:43,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:43,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-08 06:51:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470350083] [2025-03-08 06:51:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:43,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:43,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:43,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 06:51:43,792 INFO L87 Difference]: Start difference. First operand 26398 states and 34138 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 06:51:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:51:44,983 INFO L93 Difference]: Finished difference Result 35712 states and 45706 transitions. [2025-03-08 06:51:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 06:51:44,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2025-03-08 06:51:44,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:51:45,085 INFO L225 Difference]: With dead ends: 35712 [2025-03-08 06:51:45,085 INFO L226 Difference]: Without dead ends: 30727 [2025-03-08 06:51:45,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-08 06:51:45,110 INFO L435 NwaCegarLoop]: 4094 mSDtfsCounter, 4200 mSDsluCounter, 8210 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4209 SdHoareTripleChecker+Valid, 12304 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:51:45,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4209 Valid, 12304 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:51:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30727 states. [2025-03-08 06:51:45,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30727 to 17291. [2025-03-08 06:51:45,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17291 states, 15060 states have (on average 1.2859893758300134) internal successors, (19367), 15168 states have internal predecessors, (19367), 1229 states have call successors, (1229), 929 states have call predecessors, (1229), 1000 states have return successors, (1844), 1197 states have call predecessors, (1844), 1227 states have call successors, (1844) [2025-03-08 06:51:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17291 states to 17291 states and 22440 transitions. [2025-03-08 06:51:45,903 INFO L78 Accepts]: Start accepts. Automaton has 17291 states and 22440 transitions. Word has length 164 [2025-03-08 06:51:45,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:51:45,903 INFO L471 AbstractCegarLoop]: Abstraction has 17291 states and 22440 transitions. [2025-03-08 06:51:45,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 06:51:45,903 INFO L276 IsEmpty]: Start isEmpty. Operand 17291 states and 22440 transitions. [2025-03-08 06:51:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-08 06:51:45,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:51:45,912 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:51:45,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-08 06:51:46,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:46,113 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:51:46,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:51:46,113 INFO L85 PathProgramCache]: Analyzing trace with hash -806229548, now seen corresponding path program 1 times [2025-03-08 06:51:46,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:51:46,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279202782] [2025-03-08 06:51:46,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:46,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:51:46,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-08 06:51:46,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-08 06:51:46,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:46,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-08 06:51:46,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:51:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279202782] [2025-03-08 06:51:46,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279202782] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:51:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689487623] [2025-03-08 06:51:46,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:51:46,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:51:46,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:51:46,156 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:51:46,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 06:51:46,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-08 06:51:46,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-08 06:51:46,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:51:46,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:51:46,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 06:51:46,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:51:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-08 06:51:46,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:51:46,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689487623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:51:46,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:51:46,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2025-03-08 06:51:46,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057752893] [2025-03-08 06:51:46,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:51:46,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:51:46,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:51:46,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:51:46,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 06:51:46,296 INFO L87 Difference]: Start difference. First operand 17291 states and 22440 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)