./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.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 29f58006f2dcb74445f74971d42059f9136b4de9a536aa3c519655ea459ca984 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:57:00,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:57:00,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:57:00,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:57:00,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:57:00,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:57:00,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:57:00,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:57:00,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:57:00,817 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:57:00,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:57:00,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:57:00,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:57:00,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:57:00,818 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:57:00,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:57:00,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:57:00,818 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:57:00,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:57:00,819 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:57:00,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:57:00,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:57:00,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:57:00,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:57:00,821 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 -> 29f58006f2dcb74445f74971d42059f9136b4de9a536aa3c519655ea459ca984 [2025-03-08 06:57:01,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:57:01,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:57:01,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:57:01,034 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:57:01,034 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:57:01,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c [2025-03-08 06:57:02,229 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8840b935/d93b93c0c4bc482c909bc51a3c8ef84a/FLAG517af8a01 [2025-03-08 06:57:02,690 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:57:02,691 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c [2025-03-08 06:57:02,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8840b935/d93b93c0c4bc482c909bc51a3c8ef84a/FLAG517af8a01 [2025-03-08 06:57:02,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8840b935/d93b93c0c4bc482c909bc51a3c8ef84a [2025-03-08 06:57:02,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:57:02,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:57:02,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:57:02,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:57:02,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:57:02,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:57:02" (1/1) ... [2025-03-08 06:57:02,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e94045c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:02, skipping insertion in model container [2025-03-08 06:57:02,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:57:02" (1/1) ... [2025-03-08 06:57:02,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:57:04,051 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_label46+token_ring.13.cil-2.c[382357,382370] [2025-03-08 06:57:04,080 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_label46+token_ring.13.cil-2.c[383339,383352] [2025-03-08 06:57:04,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:57:04,319 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:57:04,795 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_label46+token_ring.13.cil-2.c[382357,382370] [2025-03-08 06:57:04,798 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_label46+token_ring.13.cil-2.c[383339,383352] [2025-03-08 06:57:04,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:57:04,858 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:57:04,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04 WrapperNode [2025-03-08 06:57:04,859 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:57:04,860 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:57:04,860 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:57:04,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:57:04,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:04,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,238 INFO L138 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13242 [2025-03-08 06:57:05,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:57:05,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:57:05,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:57:05,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:57:05,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,443 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,546 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 06:57:05,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,670 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,778 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:57:05,780 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:57:05,780 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:57:05,781 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:57:05,781 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (1/1) ... [2025-03-08 06:57:05,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:57:05,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:57:05,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:57:05,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:57:05,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:57:05,829 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 06:57:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 06:57:05,830 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 06:57:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 06:57:05,830 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 06:57:05,830 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 06:57:05,830 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 06:57:05,831 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 06:57:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 06:57:05,831 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 06:57:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 06:57:05,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 06:57:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:57:05,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:57:05,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:57:05,955 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:57:05,957 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:57:12,074 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 06:57:12,075 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 06:57:12,075 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 06:57:12,075 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 06:57:12,075 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 06:57:12,075 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 06:57:12,075 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 06:57:12,385 INFO L? ?]: Removed 1761 outVars from TransFormulas that were not future-live. [2025-03-08 06:57:12,385 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:57:12,442 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:57:12,445 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:57:12,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:57:12 BoogieIcfgContainer [2025-03-08 06:57:12,446 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:57:12,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:57:12,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:57:12,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:57:12,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:57:02" (1/3) ... [2025-03-08 06:57:12,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab18ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:57:12, skipping insertion in model container [2025-03-08 06:57:12,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:57:04" (2/3) ... [2025-03-08 06:57:12,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab18ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:57:12, skipping insertion in model container [2025-03-08 06:57:12,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:57:12" (3/3) ... [2025-03-08 06:57:12,453 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.13.cil-2.c [2025-03-08 06:57:12,463 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:57:12,467 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label46+token_ring.13.cil-2.c that has 7 procedures, 2588 locations, 1 initial locations, 17 loop locations, and 2 error locations. [2025-03-08 06:57:12,567 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:57:12,577 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;@69c5e363, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:57:12,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 06:57:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 2588 states, 2553 states have (on average 1.8350959655307482) internal successors, (4685), 2555 states have internal predecessors, (4685), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-08 06:57:12,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:12,609 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:12,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:12,610 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:12,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2093930055, now seen corresponding path program 1 times [2025-03-08 06:57:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:12,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359502676] [2025-03-08 06:57:12,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:12,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:12,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:12,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:12,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:12,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:13,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:13,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359502676] [2025-03-08 06:57:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359502676] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:13,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:13,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:57:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772339816] [2025-03-08 06:57:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:13,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:57:13,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:13,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:57:13,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:57:13,246 INFO L87 Difference]: Start difference. First operand has 2588 states, 2553 states have (on average 1.8350959655307482) internal successors, (4685), 2555 states have internal predecessors, (4685), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:14,173 INFO L93 Difference]: Finished difference Result 5589 states and 10163 transitions. [2025-03-08 06:57:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:57:14,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:14,199 INFO L225 Difference]: With dead ends: 5589 [2025-03-08 06:57:14,200 INFO L226 Difference]: Without dead ends: 2952 [2025-03-08 06:57:14,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:14,211 INFO L435 NwaCegarLoop]: 4520 mSDtfsCounter, 5259 mSDsluCounter, 9319 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5280 SdHoareTripleChecker+Valid, 13839 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:14,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5280 Valid, 13839 Invalid, 731 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 06:57:14,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2025-03-08 06:57:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2921. [2025-03-08 06:57:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2857 states have (on average 1.7966398319915995) internal successors, (5133), 2860 states have internal predecessors, (5133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-08 06:57:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 5232 transitions. [2025-03-08 06:57:14,353 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 5232 transitions. Word has length 187 [2025-03-08 06:57:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:14,354 INFO L471 AbstractCegarLoop]: Abstraction has 2921 states and 5232 transitions. [2025-03-08 06:57:14,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 4 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 5232 transitions. [2025-03-08 06:57:14,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:14,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:14,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:14,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:57:14,361 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:14,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:14,362 INFO L85 PathProgramCache]: Analyzing trace with hash 642467977, now seen corresponding path program 1 times [2025-03-08 06:57:14,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:14,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435880224] [2025-03-08 06:57:14,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:14,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:14,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:14,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:14,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:14,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:14,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:14,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435880224] [2025-03-08 06:57:14,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435880224] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:14,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:14,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:57:14,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282994564] [2025-03-08 06:57:14,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:14,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:57:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:14,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:57:14,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:14,647 INFO L87 Difference]: Start difference. First operand 2921 states and 5232 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:15,490 INFO L93 Difference]: Finished difference Result 4209 states and 7319 transitions. [2025-03-08 06:57:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:57:15,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:15,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:15,503 INFO L225 Difference]: With dead ends: 4209 [2025-03-08 06:57:15,503 INFO L226 Difference]: Without dead ends: 3430 [2025-03-08 06:57:15,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:57:15,506 INFO L435 NwaCegarLoop]: 4784 mSDtfsCounter, 5201 mSDsluCounter, 14417 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 19201 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:15,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5222 Valid, 19201 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 06:57:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2025-03-08 06:57:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 3291. [2025-03-08 06:57:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 3198 states have (on average 1.7723577235772359) internal successors, (5668), 3202 states have internal predecessors, (5668), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (75), 72 states have call predecessors, (75), 71 states have call successors, (75) [2025-03-08 06:57:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 5814 transitions. [2025-03-08 06:57:15,590 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 5814 transitions. Word has length 187 [2025-03-08 06:57:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:15,590 INFO L471 AbstractCegarLoop]: Abstraction has 3291 states and 5814 transitions. [2025-03-08 06:57:15,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:15,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 5814 transitions. [2025-03-08 06:57:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:15,593 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:15,593 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:15,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:57:15,594 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:15,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1344402570, now seen corresponding path program 1 times [2025-03-08 06:57:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269089071] [2025-03-08 06:57:15,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:15,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:15,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:15,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:15,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:15,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:15,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:15,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269089071] [2025-03-08 06:57:15,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269089071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:15,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:15,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:57:15,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983634571] [2025-03-08 06:57:15,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:15,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:57:15,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:15,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:57:15,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:15,825 INFO L87 Difference]: Start difference. First operand 3291 states and 5814 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:16,678 INFO L93 Difference]: Finished difference Result 5392 states and 9210 transitions. [2025-03-08 06:57:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:57:16,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:16,696 INFO L225 Difference]: With dead ends: 5392 [2025-03-08 06:57:16,696 INFO L226 Difference]: Without dead ends: 4243 [2025-03-08 06:57:16,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:57:16,702 INFO L435 NwaCegarLoop]: 4780 mSDtfsCounter, 5196 mSDsluCounter, 14405 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 19185 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:16,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 19185 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 06:57:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4243 states. [2025-03-08 06:57:16,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4243 to 4082. [2025-03-08 06:57:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 3929 states have (on average 1.7391193687961313) internal successors, (6833), 3937 states have internal predecessors, (6833), 115 states have call successors, (115), 30 states have call predecessors, (115), 36 states have return successors, (131), 118 states have call predecessors, (131), 115 states have call successors, (131) [2025-03-08 06:57:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 7079 transitions. [2025-03-08 06:57:16,830 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 7079 transitions. Word has length 187 [2025-03-08 06:57:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:16,830 INFO L471 AbstractCegarLoop]: Abstraction has 4082 states and 7079 transitions. [2025-03-08 06:57:16,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 7079 transitions. [2025-03-08 06:57:16,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:16,833 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:16,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:16,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:57:16,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:16,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash 951403625, now seen corresponding path program 1 times [2025-03-08 06:57:16,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:16,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491112660] [2025-03-08 06:57:16,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:16,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:16,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:16,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:16,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:16,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:17,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:17,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491112660] [2025-03-08 06:57:17,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491112660] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:17,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:17,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:57:17,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424645459] [2025-03-08 06:57:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:17,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:57:17,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:17,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:57:17,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:17,039 INFO L87 Difference]: Start difference. First operand 4082 states and 7079 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:17,973 INFO L93 Difference]: Finished difference Result 7957 states and 13393 transitions. [2025-03-08 06:57:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:57:17,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:17,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:17,998 INFO L225 Difference]: With dead ends: 7957 [2025-03-08 06:57:17,998 INFO L226 Difference]: Without dead ends: 6017 [2025-03-08 06:57:18,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:57:18,008 INFO L435 NwaCegarLoop]: 4777 mSDtfsCounter, 5191 mSDsluCounter, 14396 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5212 SdHoareTripleChecker+Valid, 19173 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:18,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5212 Valid, 19173 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 06:57:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6017 states. [2025-03-08 06:57:18,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6017 to 5811. [2025-03-08 06:57:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5811 states, 5532 states have (on average 1.7058929862617498) internal successors, (9437), 5554 states have internal predecessors, (9437), 203 states have call successors, (203), 54 states have call predecessors, (203), 74 states have return successors, (267), 210 states have call predecessors, (267), 203 states have call successors, (267) [2025-03-08 06:57:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 9907 transitions. [2025-03-08 06:57:18,202 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 9907 transitions. Word has length 187 [2025-03-08 06:57:18,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:18,202 INFO L471 AbstractCegarLoop]: Abstraction has 5811 states and 9907 transitions. [2025-03-08 06:57:18,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 9907 transitions. [2025-03-08 06:57:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:18,206 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:18,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:18,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:57:18,206 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:18,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:18,207 INFO L85 PathProgramCache]: Analyzing trace with hash -862389078, now seen corresponding path program 1 times [2025-03-08 06:57:18,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:18,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991882295] [2025-03-08 06:57:18,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:18,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:18,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:18,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:18,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:18,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:18,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:18,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991882295] [2025-03-08 06:57:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991882295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:18,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:18,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:57:18,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514716773] [2025-03-08 06:57:18,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:18,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:57:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:18,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:57:18,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:18,357 INFO L87 Difference]: Start difference. First operand 5811 states and 9907 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:19,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:19,177 INFO L93 Difference]: Finished difference Result 13656 states and 22939 transitions. [2025-03-08 06:57:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:57:19,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:19,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:19,215 INFO L225 Difference]: With dead ends: 13656 [2025-03-08 06:57:19,215 INFO L226 Difference]: Without dead ends: 9987 [2025-03-08 06:57:19,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:57:19,229 INFO L435 NwaCegarLoop]: 4774 mSDtfsCounter, 5186 mSDsluCounter, 14387 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 19161 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:19,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5207 Valid, 19161 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:57:19,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2025-03-08 06:57:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 9692. [2025-03-08 06:57:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9692 states, 9143 states have (on average 1.6879580006562398) internal successors, (15433), 9211 states have internal predecessors, (15433), 379 states have call successors, (379), 102 states have call predecessors, (379), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-08 06:57:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9692 states to 9692 states and 16447 transitions. [2025-03-08 06:57:19,479 INFO L78 Accepts]: Start accepts. Automaton has 9692 states and 16447 transitions. Word has length 187 [2025-03-08 06:57:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:19,479 INFO L471 AbstractCegarLoop]: Abstraction has 9692 states and 16447 transitions. [2025-03-08 06:57:19,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:19,480 INFO L276 IsEmpty]: Start isEmpty. Operand 9692 states and 16447 transitions. [2025-03-08 06:57:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:19,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:19,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:19,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:57:19,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:19,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:19,486 INFO L85 PathProgramCache]: Analyzing trace with hash 187480137, now seen corresponding path program 1 times [2025-03-08 06:57:19,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:19,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319882376] [2025-03-08 06:57:19,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:19,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:19,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:19,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:19,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:19,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:19,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319882376] [2025-03-08 06:57:19,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319882376] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:19,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:19,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:57:19,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655798926] [2025-03-08 06:57:19,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:19,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:57:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:19,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:57:19,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:19,636 INFO L87 Difference]: Start difference. First operand 9692 states and 16447 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:20,498 INFO L93 Difference]: Finished difference Result 26687 states and 45549 transitions. [2025-03-08 06:57:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:57:20,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:20,570 INFO L225 Difference]: With dead ends: 26687 [2025-03-08 06:57:20,570 INFO L226 Difference]: Without dead ends: 19137 [2025-03-08 06:57:20,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:57:20,600 INFO L435 NwaCegarLoop]: 4771 mSDtfsCounter, 5181 mSDsluCounter, 14378 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 19149 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:20,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 19149 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:57:20,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19137 states. [2025-03-08 06:57:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19137 to 18669. [2025-03-08 06:57:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18669 states, 17526 states have (on average 1.6937692571037315) internal successors, (29685), 17740 states have internal predecessors, (29685), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-08 06:57:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 32171 transitions. [2025-03-08 06:57:21,106 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 32171 transitions. Word has length 187 [2025-03-08 06:57:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:21,106 INFO L471 AbstractCegarLoop]: Abstraction has 18669 states and 32171 transitions. [2025-03-08 06:57:21,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 32171 transitions. [2025-03-08 06:57:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:21,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:21,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:21,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:57:21,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:21,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash 359894218, now seen corresponding path program 1 times [2025-03-08 06:57:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:21,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597229157] [2025-03-08 06:57:21,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:21,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:21,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:21,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:21,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:21,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:21,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:21,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597229157] [2025-03-08 06:57:21,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597229157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:21,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:21,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:57:21,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633955737] [2025-03-08 06:57:21,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:21,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:57:21,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:21,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:57:21,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:57:21,252 INFO L87 Difference]: Start difference. First operand 18669 states and 32171 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:21,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:21,938 INFO L93 Difference]: Finished difference Result 40586 states and 71484 transitions. [2025-03-08 06:57:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:57:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:22,013 INFO L225 Difference]: With dead ends: 40586 [2025-03-08 06:57:22,014 INFO L226 Difference]: Without dead ends: 24059 [2025-03-08 06:57:22,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:22,052 INFO L435 NwaCegarLoop]: 4427 mSDtfsCounter, 4822 mSDsluCounter, 8689 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 13116 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:22,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4843 Valid, 13116 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 06:57:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24059 states. [2025-03-08 06:57:22,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24059 to 18669. [2025-03-08 06:57:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18669 states, 17526 states have (on average 1.6918863402944198) internal successors, (29652), 17740 states have internal predecessors, (29652), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-08 06:57:22,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 32138 transitions. [2025-03-08 06:57:22,525 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 32138 transitions. Word has length 187 [2025-03-08 06:57:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:22,525 INFO L471 AbstractCegarLoop]: Abstraction has 18669 states and 32138 transitions. [2025-03-08 06:57:22,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 32138 transitions. [2025-03-08 06:57:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:22,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:22,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:22,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:57:22,535 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:22,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:22,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1297112023, now seen corresponding path program 1 times [2025-03-08 06:57:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:22,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482462549] [2025-03-08 06:57:22,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:22,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:22,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:22,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:22,556 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:22,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:22,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:22,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482462549] [2025-03-08 06:57:22,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482462549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:22,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:22,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:57:22,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054946886] [2025-03-08 06:57:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:22,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:57:22,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:22,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:57:22,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:57:22,661 INFO L87 Difference]: Start difference. First operand 18669 states and 32138 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:23,462 INFO L93 Difference]: Finished difference Result 40341 states and 70928 transitions. [2025-03-08 06:57:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:57:23,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:23,552 INFO L225 Difference]: With dead ends: 40341 [2025-03-08 06:57:23,553 INFO L226 Difference]: Without dead ends: 23814 [2025-03-08 06:57:23,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:23,599 INFO L435 NwaCegarLoop]: 4424 mSDtfsCounter, 4819 mSDsluCounter, 8684 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4840 SdHoareTripleChecker+Valid, 13108 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:23,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4840 Valid, 13108 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:57:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23814 states. [2025-03-08 06:57:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23814 to 18669. [2025-03-08 06:57:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18669 states, 17526 states have (on average 1.6900034234851078) internal successors, (29619), 17740 states have internal predecessors, (29619), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-08 06:57:24,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 32105 transitions. [2025-03-08 06:57:24,258 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 32105 transitions. Word has length 187 [2025-03-08 06:57:24,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:24,258 INFO L471 AbstractCegarLoop]: Abstraction has 18669 states and 32105 transitions. [2025-03-08 06:57:24,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 32105 transitions. [2025-03-08 06:57:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:24,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:24,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:24,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:57:24,266 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:24,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:24,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2113119466, now seen corresponding path program 1 times [2025-03-08 06:57:24,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:24,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739211337] [2025-03-08 06:57:24,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:24,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:24,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:24,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:24,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:24,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:24,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739211337] [2025-03-08 06:57:24,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739211337] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:24,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:24,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:57:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244368169] [2025-03-08 06:57:24,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:24,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:57:24,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:24,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:57:24,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:57:24,372 INFO L87 Difference]: Start difference. First operand 18669 states and 32105 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:25,020 INFO L93 Difference]: Finished difference Result 39851 states and 69882 transitions. [2025-03-08 06:57:25,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:57:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:25,095 INFO L225 Difference]: With dead ends: 39851 [2025-03-08 06:57:25,095 INFO L226 Difference]: Without dead ends: 23324 [2025-03-08 06:57:25,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:25,131 INFO L435 NwaCegarLoop]: 4419 mSDtfsCounter, 4815 mSDsluCounter, 8675 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4836 SdHoareTripleChecker+Valid, 13094 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:25,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4836 Valid, 13094 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:57:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23324 states. [2025-03-08 06:57:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23324 to 18669. [2025-03-08 06:57:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18669 states, 17526 states have (on average 1.688120506675796) internal successors, (29586), 17740 states have internal predecessors, (29586), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-08 06:57:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 32072 transitions. [2025-03-08 06:57:25,636 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 32072 transitions. Word has length 187 [2025-03-08 06:57:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:25,637 INFO L471 AbstractCegarLoop]: Abstraction has 18669 states and 32072 transitions. [2025-03-08 06:57:25,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 32072 transitions. [2025-03-08 06:57:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:25,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:25,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:25,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 06:57:25,644 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:25,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:25,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1410523627, now seen corresponding path program 1 times [2025-03-08 06:57:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841845478] [2025-03-08 06:57:25,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:25,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:25,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:25,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:25,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:25,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:25,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:25,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841845478] [2025-03-08 06:57:25,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841845478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:25,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:25,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:57:25,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401756760] [2025-03-08 06:57:25,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:25,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:57:25,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:25,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:57:25,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:57:25,748 INFO L87 Difference]: Start difference. First operand 18669 states and 32072 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:26,451 INFO L93 Difference]: Finished difference Result 39606 states and 69326 transitions. [2025-03-08 06:57:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:57:26,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:26,520 INFO L225 Difference]: With dead ends: 39606 [2025-03-08 06:57:26,520 INFO L226 Difference]: Without dead ends: 23079 [2025-03-08 06:57:26,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:26,558 INFO L435 NwaCegarLoop]: 4416 mSDtfsCounter, 4812 mSDsluCounter, 8670 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4833 SdHoareTripleChecker+Valid, 13086 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:26,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4833 Valid, 13086 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:57:26,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23079 states. [2025-03-08 06:57:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23079 to 18669. [2025-03-08 06:57:27,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18669 states, 17526 states have (on average 1.686237589866484) internal successors, (29553), 17740 states have internal predecessors, (29553), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-08 06:57:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 32039 transitions. [2025-03-08 06:57:27,223 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 32039 transitions. Word has length 187 [2025-03-08 06:57:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:27,223 INFO L471 AbstractCegarLoop]: Abstraction has 18669 states and 32039 transitions. [2025-03-08 06:57:27,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 32039 transitions. [2025-03-08 06:57:27,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:27,231 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:27,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:27,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 06:57:27,232 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:27,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1937276726, now seen corresponding path program 1 times [2025-03-08 06:57:27,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:27,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987469686] [2025-03-08 06:57:27,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:27,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:27,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:27,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:27,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:27,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:27,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:27,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987469686] [2025-03-08 06:57:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987469686] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:27,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:27,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:57:27,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121415543] [2025-03-08 06:57:27,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:27,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:57:27,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:27,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:57:27,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:57:27,354 INFO L87 Difference]: Start difference. First operand 18669 states and 32039 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:28,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:28,170 INFO L93 Difference]: Finished difference Result 39361 states and 68770 transitions. [2025-03-08 06:57:28,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:57:28,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:28,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:28,237 INFO L225 Difference]: With dead ends: 39361 [2025-03-08 06:57:28,237 INFO L226 Difference]: Without dead ends: 22834 [2025-03-08 06:57:28,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:28,276 INFO L435 NwaCegarLoop]: 4413 mSDtfsCounter, 4809 mSDsluCounter, 8665 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 13078 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:28,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 13078 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:57:28,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22834 states. [2025-03-08 06:57:28,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22834 to 18669. [2025-03-08 06:57:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18669 states, 17526 states have (on average 1.6843546730571721) internal successors, (29520), 17740 states have internal predecessors, (29520), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-08 06:57:28,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 32006 transitions. [2025-03-08 06:57:28,854 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 32006 transitions. Word has length 187 [2025-03-08 06:57:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:28,854 INFO L471 AbstractCegarLoop]: Abstraction has 18669 states and 32006 transitions. [2025-03-08 06:57:28,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 32006 transitions. [2025-03-08 06:57:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:28,859 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:28,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:28,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 06:57:28,860 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:28,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1213986293, now seen corresponding path program 1 times [2025-03-08 06:57:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:28,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29151704] [2025-03-08 06:57:28,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:28,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:28,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:28,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:28,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:28,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:29,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:29,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29151704] [2025-03-08 06:57:29,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29151704] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:29,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:29,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:57:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207686446] [2025-03-08 06:57:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:29,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:57:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:29,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:57:29,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:29,012 INFO L87 Difference]: Start difference. First operand 18669 states and 32006 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:30,724 INFO L93 Difference]: Finished difference Result 55766 states and 97556 transitions. [2025-03-08 06:57:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:57:30,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:30,886 INFO L225 Difference]: With dead ends: 55766 [2025-03-08 06:57:30,886 INFO L226 Difference]: Without dead ends: 39239 [2025-03-08 06:57:30,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:57:30,948 INFO L435 NwaCegarLoop]: 4739 mSDtfsCounter, 5133 mSDsluCounter, 14289 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 19028 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:30,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5154 Valid, 19028 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 06:57:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39239 states. [2025-03-08 06:57:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39239 to 38648. [2025-03-08 06:57:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38648 states, 36155 states have (on average 1.69857557737519) internal successors, (61412), 36823 states have internal predecessors, (61412), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 1056 states have return successors, (5531), 1498 states have call predecessors, (5531), 1435 states have call successors, (5531) [2025-03-08 06:57:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38648 states to 38648 states and 68378 transitions. [2025-03-08 06:57:32,300 INFO L78 Accepts]: Start accepts. Automaton has 38648 states and 68378 transitions. Word has length 187 [2025-03-08 06:57:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:32,301 INFO L471 AbstractCegarLoop]: Abstraction has 38648 states and 68378 transitions. [2025-03-08 06:57:32,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 38648 states and 68378 transitions. [2025-03-08 06:57:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:32,310 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:32,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:32,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 06:57:32,311 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:32,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:32,311 INFO L85 PathProgramCache]: Analyzing trace with hash 471913642, now seen corresponding path program 1 times [2025-03-08 06:57:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:32,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543407407] [2025-03-08 06:57:32,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:32,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:32,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:32,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:32,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:32,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:32,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:32,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543407407] [2025-03-08 06:57:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543407407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:32,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:32,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:57:32,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874714794] [2025-03-08 06:57:32,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:32,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:57:32,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:32,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:57:32,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:32,418 INFO L87 Difference]: Start difference. First operand 38648 states and 68378 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:35,198 INFO L93 Difference]: Finished difference Result 129339 states and 235783 transitions. [2025-03-08 06:57:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:57:35,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:35,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:35,814 INFO L225 Difference]: With dead ends: 129339 [2025-03-08 06:57:35,815 INFO L226 Difference]: Without dead ends: 92833 [2025-03-08 06:57:35,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:57:35,945 INFO L435 NwaCegarLoop]: 4734 mSDtfsCounter, 5532 mSDsluCounter, 14269 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 19003 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:35,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5567 Valid, 19003 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:57:36,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92833 states. [2025-03-08 06:57:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92833 to 85461. [2025-03-08 06:57:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85461 states, 79846 states have (on average 1.7242191218094833) internal successors, (137672), 81908 states have internal predecessors, (137672), 2779 states have call successors, (2779), 774 states have call predecessors, (2779), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-08 06:57:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85461 states to 85461 states and 159614 transitions. [2025-03-08 06:57:39,824 INFO L78 Accepts]: Start accepts. Automaton has 85461 states and 159614 transitions. Word has length 187 [2025-03-08 06:57:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:39,824 INFO L471 AbstractCegarLoop]: Abstraction has 85461 states and 159614 transitions. [2025-03-08 06:57:39,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 85461 states and 159614 transitions. [2025-03-08 06:57:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:39,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:39,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:39,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 06:57:39,841 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:39,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:39,842 INFO L85 PathProgramCache]: Analyzing trace with hash 664844843, now seen corresponding path program 1 times [2025-03-08 06:57:39,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:39,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342518858] [2025-03-08 06:57:39,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:39,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:39,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:39,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:39,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:39,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:39,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342518858] [2025-03-08 06:57:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342518858] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:39,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:39,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:57:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215276485] [2025-03-08 06:57:39,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:39,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:57:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:39,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:57:39,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:57:39,920 INFO L87 Difference]: Start difference. First operand 85461 states and 159614 transitions. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:43,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:43,590 INFO L93 Difference]: Finished difference Result 199426 states and 386602 transitions. [2025-03-08 06:57:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:57:43,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:43,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:44,162 INFO L225 Difference]: With dead ends: 199426 [2025-03-08 06:57:44,162 INFO L226 Difference]: Without dead ends: 116107 [2025-03-08 06:57:44,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:44,402 INFO L435 NwaCegarLoop]: 4406 mSDtfsCounter, 4802 mSDsluCounter, 8650 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4823 SdHoareTripleChecker+Valid, 13056 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:44,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4823 Valid, 13056 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:57:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116107 states. [2025-03-08 06:57:48,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116107 to 85461. [2025-03-08 06:57:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85461 states, 79846 states have (on average 1.7226035117601384) internal successors, (137543), 81908 states have internal predecessors, (137543), 2779 states have call successors, (2779), 774 states have call predecessors, (2779), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-08 06:57:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85461 states to 85461 states and 159485 transitions. [2025-03-08 06:57:48,642 INFO L78 Accepts]: Start accepts. Automaton has 85461 states and 159485 transitions. Word has length 187 [2025-03-08 06:57:48,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:57:48,642 INFO L471 AbstractCegarLoop]: Abstraction has 85461 states and 159485 transitions. [2025-03-08 06:57:48,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:48,643 INFO L276 IsEmpty]: Start isEmpty. Operand 85461 states and 159485 transitions. [2025-03-08 06:57:48,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 06:57:48,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:57:48,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:57:48,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 06:57:48,659 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:57:48,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:57:48,659 INFO L85 PathProgramCache]: Analyzing trace with hash 532521098, now seen corresponding path program 1 times [2025-03-08 06:57:48,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:57:48,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505184353] [2025-03-08 06:57:48,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:57:48,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:57:48,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-08 06:57:48,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-08 06:57:48,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:57:48,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:57:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:57:48,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:57:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505184353] [2025-03-08 06:57:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505184353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:57:48,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:57:48,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:57:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56053601] [2025-03-08 06:57:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:57:48,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:57:48,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:57:48,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:57:48,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:57:48,760 INFO L87 Difference]: Start difference. First operand 85461 states and 159485 transitions. Second operand has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:57:55,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:57:55,608 INFO L93 Difference]: Finished difference Result 292324 states and 572478 transitions. [2025-03-08 06:57:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:57:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.5) internal successors, (177), 5 states have internal predecessors, (177), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 187 [2025-03-08 06:57:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:57:56,599 INFO L225 Difference]: With dead ends: 292324 [2025-03-08 06:57:56,599 INFO L226 Difference]: Without dead ends: 209005 [2025-03-08 06:57:56,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:57:56,914 INFO L435 NwaCegarLoop]: 4726 mSDtfsCounter, 5459 mSDsluCounter, 14246 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5494 SdHoareTripleChecker+Valid, 18972 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 06:57:56,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5494 Valid, 18972 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 06:57:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209005 states.