./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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_label45+token_ring.05.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 27587b975a36272f97d565edc796c457ff04a64b538fe9933b800d0dda8dcceb --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:01:45,774 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:01:45,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:01:45,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:01:45,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:01:45,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:01:45,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:01:45,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:01:45,839 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:01:45,840 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:01:45,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:01:45,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:01:45,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:01:45,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:01:45,841 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:01:45,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:01:45,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:01:45,841 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:01:45,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:01:45,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:01:45,842 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:01:45,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:01:45,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:01:45,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:01:45,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:01:45,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:01:45,844 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 -> 27587b975a36272f97d565edc796c457ff04a64b538fe9933b800d0dda8dcceb [2025-03-16 20:01:46,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:01:46,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:01:46,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:01:46,046 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:01:46,046 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:01:46,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c [2025-03-16 20:01:47,127 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056bdb0ed/6e924a804d6b486ab5212b9aaf1b6f32/FLAG5ac136c2b [2025-03-16 20:01:47,594 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:01:47,595 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.05.cil-2.c [2025-03-16 20:01:47,636 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056bdb0ed/6e924a804d6b486ab5212b9aaf1b6f32/FLAG5ac136c2b [2025-03-16 20:01:47,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056bdb0ed/6e924a804d6b486ab5212b9aaf1b6f32 [2025-03-16 20:01:47,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:01:47,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:01:47,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:01:47,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:01:47,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:01:47,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:01:47" (1/1) ... [2025-03-16 20:01:47,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38434395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:47, skipping insertion in model container [2025-03-16 20:01:47,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:01:47" (1/1) ... [2025-03-16 20:01:47,799 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:01:48,902 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_label45+token_ring.05.cil-2.c[380323,380336] [2025-03-16 20:01:48,928 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_label45+token_ring.05.cil-2.c[383339,383352] [2025-03-16 20:01:49,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:01:49,080 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:01:49,540 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_label45+token_ring.05.cil-2.c[380323,380336] [2025-03-16 20:01:49,543 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_label45+token_ring.05.cil-2.c[383339,383352] [2025-03-16 20:01:49,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:01:49,623 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:01:49,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49 WrapperNode [2025-03-16 20:01:49,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:01:49,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:01:49,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:01:49,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:01:49,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:49,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,002 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12792 [2025-03-16 20:01:50,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:01:50,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:01:50,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:01:50,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:01:50,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,089 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,174 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]. [2025-03-16 20:01:50,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,303 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:01:50,407 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:01:50,408 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:01:50,408 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:01:50,409 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (1/1) ... [2025-03-16 20:01:50,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:01:50,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:01:50,437 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) [2025-03-16 20:01:50,444 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 [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:01:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:01:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:01:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-16 20:01:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:01:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:01:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:01:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:01:50,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:01:50,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:01:50,566 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:01:50,568 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:01:56,574 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:01:56,574 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:01:56,575 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:01:56,575 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:01:56,575 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:01:56,575 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:01:56,575 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:01:56,915 INFO L? ?]: Removed 1709 outVars from TransFormulas that were not future-live. [2025-03-16 20:01:56,915 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:01:56,986 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:01:56,986 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:01:56,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:01:56 BoogieIcfgContainer [2025-03-16 20:01:56,990 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:01:56,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:01:56,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:01:56,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:01:56,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:01:47" (1/3) ... [2025-03-16 20:01:56,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1858d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:01:56, skipping insertion in model container [2025-03-16 20:01:56,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:01:49" (2/3) ... [2025-03-16 20:01:56,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1858d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:01:56, skipping insertion in model container [2025-03-16 20:01:56,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:01:56" (3/3) ... [2025-03-16 20:01:56,998 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.05.cil-2.c [2025-03-16 20:01:57,008 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:01:57,010 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label45+token_ring.05.cil-2.c that has 8 procedures, 2325 locations, 1 initial locations, 9 loop locations, and 2 error locations. [2025-03-16 20:01:57,084 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:01:57,091 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;@609d8285, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:01:57,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:01:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 2325 states, 2295 states have (on average 1.8753812636165577) internal successors, (4304), 2299 states have internal predecessors, (4304), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-16 20:01:57,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:01:57,114 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:57,114 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:57,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:57,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:57,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1087901979, now seen corresponding path program 1 times [2025-03-16 20:01:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101215909] [2025-03-16 20:01:57,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:57,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:57,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:01:57,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:01:57,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:57,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:57,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:57,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101215909] [2025-03-16 20:01:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101215909] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:57,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:57,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:01:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670221282] [2025-03-16 20:01:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:57,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:01:57,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:57,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:01:57,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:57,573 INFO L87 Difference]: Start difference. First operand has 2325 states, 2295 states have (on average 1.8753812636165577) internal successors, (4304), 2299 states have internal predecessors, (4304), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-03-16 20:01:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:58,076 INFO L93 Difference]: Finished difference Result 4847 states and 9017 transitions. [2025-03-16 20:01:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:01:58,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 92 [2025-03-16 20:01:58,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:58,097 INFO L225 Difference]: With dead ends: 4847 [2025-03-16 20:01:58,097 INFO L226 Difference]: Without dead ends: 2525 [2025-03-16 20:01:58,104 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 [2025-03-16 20:01:58,106 INFO L435 NwaCegarLoop]: 4208 mSDtfsCounter, 4513 mSDsluCounter, 8539 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4526 SdHoareTripleChecker+Valid, 12747 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:58,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4526 Valid, 12747 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:01:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2025-03-16 20:01:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2508. [2025-03-16 20:01:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2458 states have (on average 1.8291293734743694) internal successors, (4496), 2462 states have internal predecessors, (4496), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:01:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 4565 transitions. [2025-03-16 20:01:58,225 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 4565 transitions. Word has length 92 [2025-03-16 20:01:58,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:58,225 INFO L471 AbstractCegarLoop]: Abstraction has 2508 states and 4565 transitions. [2025-03-16 20:01:58,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-03-16 20:01:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 4565 transitions. [2025-03-16 20:01:58,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:01:58,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:58,228 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:58,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:01:58,229 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:58,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:58,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1518734937, now seen corresponding path program 1 times [2025-03-16 20:01:58,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:58,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458767896] [2025-03-16 20:01:58,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:58,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:58,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:01:58,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:01:58,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:58,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:58,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:58,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458767896] [2025-03-16 20:01:58,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458767896] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:58,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:58,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:01:58,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826494999] [2025-03-16 20:01:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:58,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:01:58,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:58,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:01:58,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:58,444 INFO L87 Difference]: Start difference. First operand 2508 states and 4565 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:01:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:58,678 INFO L93 Difference]: Finished difference Result 2920 states and 5223 transitions. [2025-03-16 20:01:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:01:58,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:01:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:58,689 INFO L225 Difference]: With dead ends: 2920 [2025-03-16 20:01:58,689 INFO L226 Difference]: Without dead ends: 2544 [2025-03-16 20:01:58,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:58,692 INFO L435 NwaCegarLoop]: 4190 mSDtfsCounter, 4355 mSDsluCounter, 8291 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4368 SdHoareTripleChecker+Valid, 12481 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:58,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4368 Valid, 12481 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:01:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2025-03-16 20:01:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2508. [2025-03-16 20:01:58,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2508 states, 2458 states have (on average 1.8283157038242475) internal successors, (4494), 2462 states have internal predecessors, (4494), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:01:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 4563 transitions. [2025-03-16 20:01:58,753 INFO L78 Accepts]: Start accepts. Automaton has 2508 states and 4563 transitions. Word has length 92 [2025-03-16 20:01:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:58,753 INFO L471 AbstractCegarLoop]: Abstraction has 2508 states and 4563 transitions. [2025-03-16 20:01:58,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:01:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2508 states and 4563 transitions. [2025-03-16 20:01:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:01:58,755 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:58,755 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:58,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:01:58,756 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:58,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1532267738, now seen corresponding path program 1 times [2025-03-16 20:01:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815086068] [2025-03-16 20:01:58,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:58,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:01:58,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:01:58,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:58,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:58,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:58,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815086068] [2025-03-16 20:01:58,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815086068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:58,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:58,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:01:58,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722982941] [2025-03-16 20:01:58,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:58,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:01:58,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:58,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:01:58,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:58,878 INFO L87 Difference]: Start difference. First operand 2508 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:01:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:59,322 INFO L93 Difference]: Finished difference Result 3121 states and 5530 transitions. [2025-03-16 20:01:59,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:01:59,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:01:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:59,333 INFO L225 Difference]: With dead ends: 3121 [2025-03-16 20:01:59,333 INFO L226 Difference]: Without dead ends: 2745 [2025-03-16 20:01:59,336 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 [2025-03-16 20:01:59,338 INFO L435 NwaCegarLoop]: 4360 mSDtfsCounter, 4494 mSDsluCounter, 13069 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 17429 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:59,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 17429 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:01:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2025-03-16 20:01:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2684. [2025-03-16 20:01:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2613 states have (on average 1.8120933792575584) internal successors, (4735), 2618 states have internal predecessors, (4735), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2025-03-16 20:01:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4835 transitions. [2025-03-16 20:01:59,409 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4835 transitions. Word has length 92 [2025-03-16 20:01:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:59,410 INFO L471 AbstractCegarLoop]: Abstraction has 2684 states and 4835 transitions. [2025-03-16 20:01:59,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:01:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4835 transitions. [2025-03-16 20:01:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:01:59,412 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:59,412 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:59,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:01:59,412 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:59,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1653884359, now seen corresponding path program 1 times [2025-03-16 20:01:59,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:59,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297900888] [2025-03-16 20:01:59,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:59,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:59,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:01:59,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:01:59,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:59,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:59,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:59,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297900888] [2025-03-16 20:01:59,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297900888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:59,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:59,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:01:59,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132332411] [2025-03-16 20:01:59,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:59,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:01:59,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:59,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:01:59,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:59,551 INFO L87 Difference]: Start difference. First operand 2684 states and 4835 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:00,023 INFO L93 Difference]: Finished difference Result 3674 states and 6395 transitions. [2025-03-16 20:02:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:02:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:00,035 INFO L225 Difference]: With dead ends: 3674 [2025-03-16 20:02:00,035 INFO L226 Difference]: Without dead ends: 3122 [2025-03-16 20:02:00,038 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 [2025-03-16 20:02:00,038 INFO L435 NwaCegarLoop]: 4356 mSDtfsCounter, 4489 mSDsluCounter, 13057 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 17413 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:00,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 17413 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:02:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2025-03-16 20:02:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3055. [2025-03-16 20:02:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 2940 states have (on average 1.7850340136054421) internal successors, (5248), 2949 states have internal predecessors, (5248), 77 states have call successors, (77), 31 states have call predecessors, (77), 36 states have return successors, (91), 78 states have call predecessors, (91), 75 states have call successors, (91) [2025-03-16 20:02:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 5416 transitions. [2025-03-16 20:02:00,117 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 5416 transitions. Word has length 92 [2025-03-16 20:02:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:00,117 INFO L471 AbstractCegarLoop]: Abstraction has 3055 states and 5416 transitions. [2025-03-16 20:02:00,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 5416 transitions. [2025-03-16 20:02:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:02:00,121 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:00,121 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:00,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:02:00,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:00,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash -786832134, now seen corresponding path program 1 times [2025-03-16 20:02:00,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:00,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145035363] [2025-03-16 20:02:00,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:00,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:00,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:02:00,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:02:00,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:00,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:02:00,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:00,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145035363] [2025-03-16 20:02:00,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145035363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:00,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:02:00,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:02:00,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102373897] [2025-03-16 20:02:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:00,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:02:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:00,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:02:00,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:02:00,249 INFO L87 Difference]: Start difference. First operand 3055 states and 5416 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:00,703 INFO L93 Difference]: Finished difference Result 4851 states and 8270 transitions. [2025-03-16 20:02:00,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:02:00,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:00,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:00,719 INFO L225 Difference]: With dead ends: 4851 [2025-03-16 20:02:00,719 INFO L226 Difference]: Without dead ends: 3928 [2025-03-16 20:02:00,723 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 [2025-03-16 20:02:00,724 INFO L435 NwaCegarLoop]: 4353 mSDtfsCounter, 4484 mSDsluCounter, 13048 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 17401 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:00,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4497 Valid, 17401 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:02:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2025-03-16 20:02:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3848. [2025-03-16 20:02:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3639 states have (on average 1.7466336905743336) internal successors, (6356), 3662 states have internal predecessors, (6356), 133 states have call successors, (133), 55 states have call predecessors, (133), 74 states have return successors, (195), 138 states have call predecessors, (195), 131 states have call successors, (195) [2025-03-16 20:02:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 6684 transitions. [2025-03-16 20:02:00,826 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 6684 transitions. Word has length 92 [2025-03-16 20:02:00,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:00,827 INFO L471 AbstractCegarLoop]: Abstraction has 3848 states and 6684 transitions. [2025-03-16 20:02:00,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 6684 transitions. [2025-03-16 20:02:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:02:00,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:00,829 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:00,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:02:00,829 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:00,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash -343220711, now seen corresponding path program 1 times [2025-03-16 20:02:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:00,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739412587] [2025-03-16 20:02:00,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:00,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:00,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:02:00,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:02:00,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:00,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:02:00,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:00,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739412587] [2025-03-16 20:02:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739412587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:00,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:02:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:02:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21521973] [2025-03-16 20:02:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:00,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:02:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:00,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:02:00,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:02:00,916 INFO L87 Difference]: Start difference. First operand 3848 states and 6684 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:01,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:01,611 INFO L93 Difference]: Finished difference Result 7390 states and 12432 transitions. [2025-03-16 20:02:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:02:01,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:01,634 INFO L225 Difference]: With dead ends: 7390 [2025-03-16 20:02:01,634 INFO L226 Difference]: Without dead ends: 5674 [2025-03-16 20:02:01,641 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 [2025-03-16 20:02:01,641 INFO L435 NwaCegarLoop]: 4350 mSDtfsCounter, 4479 mSDsluCounter, 13039 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4492 SdHoareTripleChecker+Valid, 17389 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:01,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4492 Valid, 17389 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:02:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2025-03-16 20:02:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 5569. [2025-03-16 20:02:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 5154 states have (on average 1.7043073341094295) internal successors, (8784), 5223 states have internal predecessors, (8784), 245 states have call successors, (245), 103 states have call predecessors, (245), 168 states have return successors, (499), 258 states have call predecessors, (499), 243 states have call successors, (499) [2025-03-16 20:02:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 9528 transitions. [2025-03-16 20:02:01,809 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 9528 transitions. Word has length 92 [2025-03-16 20:02:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:01,809 INFO L471 AbstractCegarLoop]: Abstraction has 5569 states and 9528 transitions. [2025-03-16 20:02:01,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:01,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 9528 transitions. [2025-03-16 20:02:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:02:01,813 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:01,813 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:01,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:02:01,813 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:01,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:01,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1298741990, now seen corresponding path program 1 times [2025-03-16 20:02:01,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:01,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022148358] [2025-03-16 20:02:01,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:01,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:02:01,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:02:01,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:01,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:02:01,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:01,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022148358] [2025-03-16 20:02:01,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022148358] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:01,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:02:01,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:02:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978656535] [2025-03-16 20:02:01,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:01,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:02:01,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:01,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:02:01,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:02:01,906 INFO L87 Difference]: Start difference. First operand 5569 states and 9528 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:02,549 INFO L93 Difference]: Finished difference Result 13493 states and 22835 transitions. [2025-03-16 20:02:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:02:02,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:02,602 INFO L225 Difference]: With dead ends: 13493 [2025-03-16 20:02:02,602 INFO L226 Difference]: Without dead ends: 10056 [2025-03-16 20:02:02,616 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 [2025-03-16 20:02:02,617 INFO L435 NwaCegarLoop]: 4345 mSDtfsCounter, 4620 mSDsluCounter, 13019 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 17364 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:02,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 17364 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:02:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10056 states. [2025-03-16 20:02:02,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10056 to 9314. [2025-03-16 20:02:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9314 states, 8449 states have (on average 1.6735708367854183) internal successors, (14140), 8664 states have internal predecessors, (14140), 453 states have call successors, (453), 199 states have call predecessors, (453), 410 states have return successors, (1475), 482 states have call predecessors, (1475), 451 states have call successors, (1475) [2025-03-16 20:02:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9314 states to 9314 states and 16068 transitions. [2025-03-16 20:02:02,985 INFO L78 Accepts]: Start accepts. Automaton has 9314 states and 16068 transitions. Word has length 92 [2025-03-16 20:02:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:02,987 INFO L471 AbstractCegarLoop]: Abstraction has 9314 states and 16068 transitions. [2025-03-16 20:02:02,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 9314 states and 16068 transitions. [2025-03-16 20:02:02,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:02:02,993 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:02,993 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:02,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:02:02,993 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:02,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash 887192057, now seen corresponding path program 1 times [2025-03-16 20:02:02,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:02,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737047939] [2025-03-16 20:02:02,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:02,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:03,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:02:03,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:02:03,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:03,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:02:03,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:03,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737047939] [2025-03-16 20:02:03,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737047939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:03,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:02:03,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:02:03,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482808866] [2025-03-16 20:02:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:03,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:02:03,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:03,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:02:03,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:02:03,100 INFO L87 Difference]: Start difference. First operand 9314 states and 16068 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:04,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:04,130 INFO L93 Difference]: Finished difference Result 25578 states and 45141 transitions. [2025-03-16 20:02:04,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:02:04,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:04,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:04,208 INFO L225 Difference]: With dead ends: 25578 [2025-03-16 20:02:04,212 INFO L226 Difference]: Without dead ends: 18396 [2025-03-16 20:02:04,239 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 [2025-03-16 20:02:04,241 INFO L435 NwaCegarLoop]: 4338 mSDtfsCounter, 4558 mSDsluCounter, 13000 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 17338 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:04,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4577 Valid, 17338 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:02:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18396 states. [2025-03-16 20:02:04,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18396 to 17404. [2025-03-16 20:02:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17404 states, 15493 states have (on average 1.653262763828826) internal successors, (25614), 16162 states have internal predecessors, (25614), 853 states have call successors, (853), 391 states have call predecessors, (853), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:02:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 31414 transitions. [2025-03-16 20:02:05,108 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 31414 transitions. Word has length 92 [2025-03-16 20:02:05,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:05,109 INFO L471 AbstractCegarLoop]: Abstraction has 17404 states and 31414 transitions. [2025-03-16 20:02:05,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:05,110 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 31414 transitions. [2025-03-16 20:02:05,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:02:05,121 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:05,121 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:05,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:02:05,122 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:05,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1841420952, now seen corresponding path program 1 times [2025-03-16 20:02:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:05,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2207662] [2025-03-16 20:02:05,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:05,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:05,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:02:05,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:02:05,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:05,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:02:05,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2207662] [2025-03-16 20:02:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2207662] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:05,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:02:05,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:02:05,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101730231] [2025-03-16 20:02:05,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:05,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:02:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:05,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:02:05,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:02:05,206 INFO L87 Difference]: Start difference. First operand 17404 states and 31414 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:06,146 INFO L93 Difference]: Finished difference Result 35600 states and 66734 transitions. [2025-03-16 20:02:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:02:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:06,230 INFO L225 Difference]: With dead ends: 35600 [2025-03-16 20:02:06,230 INFO L226 Difference]: Without dead ends: 20328 [2025-03-16 20:02:06,271 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 [2025-03-16 20:02:06,273 INFO L435 NwaCegarLoop]: 4173 mSDtfsCounter, 4343 mSDsluCounter, 8256 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4356 SdHoareTripleChecker+Valid, 12429 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:06,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4356 Valid, 12429 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:02:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20328 states. [2025-03-16 20:02:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20328 to 17404. [2025-03-16 20:02:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17404 states, 15493 states have (on average 1.649067320725489) internal successors, (25549), 16162 states have internal predecessors, (25549), 853 states have call successors, (853), 391 states have call predecessors, (853), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:02:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 31349 transitions. [2025-03-16 20:02:07,158 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 31349 transitions. Word has length 92 [2025-03-16 20:02:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:07,159 INFO L471 AbstractCegarLoop]: Abstraction has 17404 states and 31349 transitions. [2025-03-16 20:02:07,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 31349 transitions. [2025-03-16 20:02:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:02:07,168 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:07,168 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:07,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:02:07,169 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:07,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1595107865, now seen corresponding path program 1 times [2025-03-16 20:02:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:07,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735778129] [2025-03-16 20:02:07,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:07,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:07,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:02:07,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:02:07,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:07,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:02:07,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:07,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735778129] [2025-03-16 20:02:07,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735778129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:07,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:02:07,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:02:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209352020] [2025-03-16 20:02:07,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:07,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:02:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:07,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:02:07,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:02:07,247 INFO L87 Difference]: Start difference. First operand 17404 states and 31349 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:08,380 INFO L93 Difference]: Finished difference Result 34869 states and 65142 transitions. [2025-03-16 20:02:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:02:08,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:08,460 INFO L225 Difference]: With dead ends: 34869 [2025-03-16 20:02:08,460 INFO L226 Difference]: Without dead ends: 19597 [2025-03-16 20:02:08,498 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 [2025-03-16 20:02:08,498 INFO L435 NwaCegarLoop]: 4170 mSDtfsCounter, 4340 mSDsluCounter, 8251 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 12421 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:08,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4353 Valid, 12421 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:02:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19597 states. [2025-03-16 20:02:09,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19597 to 17404. [2025-03-16 20:02:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17404 states, 15493 states have (on average 1.644871877622152) internal successors, (25484), 16162 states have internal predecessors, (25484), 853 states have call successors, (853), 391 states have call predecessors, (853), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:02:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17404 states to 17404 states and 31284 transitions. [2025-03-16 20:02:09,702 INFO L78 Accepts]: Start accepts. Automaton has 17404 states and 31284 transitions. Word has length 92 [2025-03-16 20:02:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:09,702 INFO L471 AbstractCegarLoop]: Abstraction has 17404 states and 31284 transitions. [2025-03-16 20:02:09,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 17404 states and 31284 transitions. [2025-03-16 20:02:09,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:02:09,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:09,714 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:09,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:02:09,714 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:09,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:09,715 INFO L85 PathProgramCache]: Analyzing trace with hash -75405704, now seen corresponding path program 1 times [2025-03-16 20:02:09,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:09,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328151706] [2025-03-16 20:02:09,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:09,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:09,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:02:09,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:02:09,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:09,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:02:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:09,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328151706] [2025-03-16 20:02:09,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328151706] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:09,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:02:09,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:02:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846792672] [2025-03-16 20:02:09,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:09,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:02:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:09,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:02:09,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:02:09,827 INFO L87 Difference]: Start difference. First operand 17404 states and 31284 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:11,340 INFO L93 Difference]: Finished difference Result 49602 states and 95223 transitions. [2025-03-16 20:02:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:02:11,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:11,470 INFO L225 Difference]: With dead ends: 49602 [2025-03-16 20:02:11,470 INFO L226 Difference]: Without dead ends: 34330 [2025-03-16 20:02:11,508 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 [2025-03-16 20:02:11,509 INFO L435 NwaCegarLoop]: 4325 mSDtfsCounter, 4456 mSDsluCounter, 12963 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4475 SdHoareTripleChecker+Valid, 17288 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:11,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4475 Valid, 17288 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:02:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34330 states. [2025-03-16 20:02:13,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34330 to 33731. [2025-03-16 20:02:13,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33731 states, 29274 states have (on average 1.6135820181731229) internal successors, (47236), 31337 states have internal predecessors, (47236), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 2834 states have return successors, (18003), 1746 states have call predecessors, (18003), 1619 states have call successors, (18003) [2025-03-16 20:02:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33731 states to 33731 states and 66860 transitions. [2025-03-16 20:02:13,225 INFO L78 Accepts]: Start accepts. Automaton has 33731 states and 66860 transitions. Word has length 92 [2025-03-16 20:02:13,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:13,225 INFO L471 AbstractCegarLoop]: Abstraction has 33731 states and 66860 transitions. [2025-03-16 20:02:13,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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) [2025-03-16 20:02:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand 33731 states and 66860 transitions. [2025-03-16 20:02:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 20:02:13,244 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:13,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:13,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:02:13,244 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:13,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:13,245 INFO L85 PathProgramCache]: Analyzing trace with hash -683482567, now seen corresponding path program 1 times [2025-03-16 20:02:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:13,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338434366] [2025-03-16 20:02:13,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:13,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:13,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 20:02:13,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 20:02:13,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:13,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:02:13,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:13,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338434366] [2025-03-16 20:02:13,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338434366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:13,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:02:13,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:02:13,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019923780] [2025-03-16 20:02:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:13,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:02:13,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:13,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:02:13,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:02:13,300 INFO L87 Difference]: Start difference. First operand 33731 states and 66860 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-03-16 20:02:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:16,319 INFO L93 Difference]: Finished difference Result 95761 states and 191980 transitions. [2025-03-16 20:02:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:02:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 92 [2025-03-16 20:02:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:16,635 INFO L225 Difference]: With dead ends: 95761 [2025-03-16 20:02:16,635 INFO L226 Difference]: Without dead ends: 64163 [2025-03-16 20:02:16,890 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 [2025-03-16 20:02:16,890 INFO L435 NwaCegarLoop]: 4515 mSDtfsCounter, 4476 mSDsluCounter, 4442 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 8957 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:02:16,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 8957 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:02:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64163 states. [2025-03-16 20:02:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64163 to 64034. [2025-03-16 20:02:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64034 states, 55128 states have (on average 1.5877775359164128) internal successors, (87531), 59380 states have internal predecessors, (87531), 3236 states have call successors, (3236), 1549 states have call predecessors, (3236), 5668 states have return successors, (35875), 3232 states have call predecessors, (35875), 3234 states have call successors, (35875) [2025-03-16 20:02:21,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64034 states to 64034 states and 126642 transitions. [2025-03-16 20:02:21,115 INFO L78 Accepts]: Start accepts. Automaton has 64034 states and 126642 transitions. Word has length 92 [2025-03-16 20:02:21,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:02:21,116 INFO L471 AbstractCegarLoop]: Abstraction has 64034 states and 126642 transitions. [2025-03-16 20:02:21,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2025-03-16 20:02:21,116 INFO L276 IsEmpty]: Start isEmpty. Operand 64034 states and 126642 transitions. [2025-03-16 20:02:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-16 20:02:21,193 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:02:21,193 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:02:21,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:02:21,194 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:02:21,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:02:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2009924230, now seen corresponding path program 1 times [2025-03-16 20:02:21,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:02:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402409247] [2025-03-16 20:02:21,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:02:21,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-16 20:02:21,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-16 20:02:21,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:21,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 20:02:21,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:02:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402409247] [2025-03-16 20:02:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402409247] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:02:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913141888] [2025-03-16 20:02:21,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:02:21,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:02:21,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:02:21,255 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) [2025-03-16 20:02:21,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 20:02:21,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-16 20:02:21,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-16 20:02:21,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:02:21,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:02:21,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:02:21,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:02:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 20:02:21,445 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:02:21,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913141888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:02:21,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:02:21,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 20:02:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829557248] [2025-03-16 20:02:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:02:21,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:02:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:02:21,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:02:21,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:02:21,446 INFO L87 Difference]: Start difference. First operand 64034 states and 126642 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2025-03-16 20:02:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:02:26,668 INFO L93 Difference]: Finished difference Result 186545 states and 371458 transitions. [2025-03-16 20:02:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:02:26,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 148 [2025-03-16 20:02:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:02:27,139 INFO L225 Difference]: With dead ends: 186545 [2025-03-16 20:02:27,139 INFO L226 Difference]: Without dead ends: 124644 [2025-03-16 20:02:27,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:02:27,403 INFO L435 NwaCegarLoop]: 4258 mSDtfsCounter, 4212 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4212 SdHoareTripleChecker+Valid, 4532 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 [2025-03-16 20:02:27,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4212 Valid, 4532 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:02:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124644 states.