./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.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 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:04:54,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:04:55,045 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:04:55,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:04:55,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:04:55,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:04:55,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:04:55,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:04:55,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:04:55,063 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:04:55,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:04:55,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:04:55,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:04:55,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:04:55,064 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:04:55,064 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:04:55,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:04:55,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:04:55,065 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 -> 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e [2025-03-16 20:04:55,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:04:55,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:04:55,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:04:55,299 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:04:55,299 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:04:55,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2025-03-16 20:04:56,483 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810a99fa5/583b89f9a64c4f7394057b774ad3b3c4/FLAG4cce94377 [2025-03-16 20:04:57,060 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:04:57,061 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2025-03-16 20:04:57,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810a99fa5/583b89f9a64c4f7394057b774ad3b3c4/FLAG4cce94377 [2025-03-16 20:04:57,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810a99fa5/583b89f9a64c4f7394057b774ad3b3c4 [2025-03-16 20:04:57,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:04:57,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:04:57,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:04:57,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:04:57,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:04:57,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:04:57" (1/1) ... [2025-03-16 20:04:57,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2b0be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:57, skipping insertion in model container [2025-03-16 20:04:57,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:04:57" (1/1) ... [2025-03-16 20:04:57,247 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:04:58,314 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.15.cil.c[382357,382370] [2025-03-16 20:04:58,343 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.15.cil.c[383339,383352] [2025-03-16 20:04:58,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:04:58,624 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:04:59,106 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.15.cil.c[382357,382370] [2025-03-16 20:04:59,111 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.15.cil.c[383339,383352] [2025-03-16 20:04:59,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:04:59,181 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:04:59,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59 WrapperNode [2025-03-16 20:04:59,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:04:59,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:04:59,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:04:59,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:04:59,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,577 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13246 [2025-03-16 20:04:59,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:04:59,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:04:59,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:04:59,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:04:59,587 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,796 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 20:04:59,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,928 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:04:59,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:05:00,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:05:00,048 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:05:00,048 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:05:00,048 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:05:00,049 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (1/1) ... [2025-03-16 20:05:00,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:05:00,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:05:00,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 20:05:00,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 20:05:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:05:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:05:00,097 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:05:00,097 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:05:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:05:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:05:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:05:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-16 20:05:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-16 20:05:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:05:00,098 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:05:00,098 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:05:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:05:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:05:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:05:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:05:00,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:05:00,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:05:00,209 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:05:00,211 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:05:06,217 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:05:06,218 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:05:06,219 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:05:06,219 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:05:06,219 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:05:06,219 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:05:06,219 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:05:06,474 INFO L? ?]: Removed 1749 outVars from TransFormulas that were not future-live. [2025-03-16 20:05:06,475 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:05:06,539 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:05:06,541 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:05:06,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:05:06 BoogieIcfgContainer [2025-03-16 20:05:06,541 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:05:06,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:05:06,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:05:06,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:05:06,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:04:57" (1/3) ... [2025-03-16 20:05:06,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4277751f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:05:06, skipping insertion in model container [2025-03-16 20:05:06,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:04:59" (2/3) ... [2025-03-16 20:05:06,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4277751f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:05:06, skipping insertion in model container [2025-03-16 20:05:06,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:05:06" (3/3) ... [2025-03-16 20:05:06,550 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.15.cil.c [2025-03-16 20:05:06,563 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:05:06,566 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label46+token_ring.15.cil.c that has 8 procedures, 2515 locations, 1 initial locations, 17 loop locations, and 2 error locations. [2025-03-16 20:05:06,667 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:05:06,675 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;@2fd4c1dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:05:06,675 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:05:06,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2477 states have (on average 1.861929753734356) internal successors, (4612), 2481 states have internal predecessors, (4612), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 20:05:06,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:06,702 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:06,703 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] [2025-03-16 20:05:06,704 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:06,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1516679337, now seen corresponding path program 1 times [2025-03-16 20:05:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271599567] [2025-03-16 20:05:06,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:06,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:06,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:06,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:06,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:06,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:07,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271599567] [2025-03-16 20:05:07,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271599567] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:07,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:07,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463644437] [2025-03-16 20:05:07,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:07,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:07,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:07,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:07,385 INFO L87 Difference]: Start difference. First operand has 2515 states, 2477 states have (on average 1.861929753734356) internal successors, (4612), 2481 states have internal predecessors, (4612), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:08,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:08,174 INFO L93 Difference]: Finished difference Result 5433 states and 10021 transitions. [2025-03-16 20:05:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:05:08,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:08,203 INFO L225 Difference]: With dead ends: 5433 [2025-03-16 20:05:08,204 INFO L226 Difference]: Without dead ends: 2929 [2025-03-16 20:05:08,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:08,219 INFO L435 NwaCegarLoop]: 4460 mSDtfsCounter, 5165 mSDsluCounter, 9199 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 13659 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:08,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 13659 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:05:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2025-03-16 20:05:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2896. [2025-03-16 20:05:08,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2830 states have (on average 1.8063604240282685) internal successors, (5112), 2834 states have internal predecessors, (5112), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 20:05:08,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 5213 transitions. [2025-03-16 20:05:08,373 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 5213 transitions. Word has length 172 [2025-03-16 20:05:08,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:08,375 INFO L471 AbstractCegarLoop]: Abstraction has 2896 states and 5213 transitions. [2025-03-16 20:05:08,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:08,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 5213 transitions. [2025-03-16 20:05:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:08,380 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:08,380 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] [2025-03-16 20:05:08,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:05:08,383 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:08,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:08,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2019231975, now seen corresponding path program 1 times [2025-03-16 20:05:08,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:08,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159661871] [2025-03-16 20:05:08,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:08,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:08,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:08,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:08,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:08,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:08,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159661871] [2025-03-16 20:05:08,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159661871] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:08,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:08,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:08,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40106901] [2025-03-16 20:05:08,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:08,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:08,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:08,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:08,688 INFO L87 Difference]: Start difference. First operand 2896 states and 5213 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:09,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:09,085 INFO L93 Difference]: Finished difference Result 3736 states and 6599 transitions. [2025-03-16 20:05:09,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:09,099 INFO L225 Difference]: With dead ends: 3736 [2025-03-16 20:05:09,099 INFO L226 Difference]: Without dead ends: 2980 [2025-03-16 20:05:09,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:09,102 INFO L435 NwaCegarLoop]: 4442 mSDtfsCounter, 4807 mSDsluCounter, 8715 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 13157 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:09,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4828 Valid, 13157 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:09,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2025-03-16 20:05:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2896. [2025-03-16 20:05:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2830 states have (on average 1.8056537102473498) internal successors, (5110), 2834 states have internal predecessors, (5110), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 20:05:09,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 5211 transitions. [2025-03-16 20:05:09,173 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 5211 transitions. Word has length 172 [2025-03-16 20:05:09,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:09,174 INFO L471 AbstractCegarLoop]: Abstraction has 2896 states and 5211 transitions. [2025-03-16 20:05:09,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:09,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 5211 transitions. [2025-03-16 20:05:09,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:09,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:09,177 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] [2025-03-16 20:05:09,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:05:09,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:09,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2082804120, now seen corresponding path program 1 times [2025-03-16 20:05:09,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:09,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704585005] [2025-03-16 20:05:09,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:09,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:09,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:09,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:09,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:09,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:09,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:09,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704585005] [2025-03-16 20:05:09,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704585005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:09,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:09,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:09,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406381663] [2025-03-16 20:05:09,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:09,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:09,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:09,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:09,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:09,383 INFO L87 Difference]: Start difference. First operand 2896 states and 5211 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:10,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:10,160 INFO L93 Difference]: Finished difference Result 4151 states and 7270 transitions. [2025-03-16 20:05:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:10,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:10,174 INFO L225 Difference]: With dead ends: 4151 [2025-03-16 20:05:10,174 INFO L226 Difference]: Without dead ends: 3395 [2025-03-16 20:05:10,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:10,180 INFO L435 NwaCegarLoop]: 4792 mSDtfsCounter, 5162 mSDsluCounter, 14433 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5183 SdHoareTripleChecker+Valid, 19225 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:10,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5183 Valid, 19225 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:05:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2025-03-16 20:05:10,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3254. [2025-03-16 20:05:10,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 3159 states have (on average 1.783792339347895) internal successors, (5635), 3164 states have internal predecessors, (5635), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (75), 72 states have call predecessors, (75), 71 states have call successors, (75) [2025-03-16 20:05:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 5783 transitions. [2025-03-16 20:05:10,258 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 5783 transitions. Word has length 172 [2025-03-16 20:05:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:10,259 INFO L471 AbstractCegarLoop]: Abstraction has 3254 states and 5783 transitions. [2025-03-16 20:05:10,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 5783 transitions. [2025-03-16 20:05:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:10,260 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:10,261 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] [2025-03-16 20:05:10,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:05:10,261 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:10,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2079839431, now seen corresponding path program 1 times [2025-03-16 20:05:10,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:10,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047362015] [2025-03-16 20:05:10,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:10,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:10,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:10,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:10,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:10,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:10,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:10,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047362015] [2025-03-16 20:05:10,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047362015] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:10,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:10,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:10,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130392829] [2025-03-16 20:05:10,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:10,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:10,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:10,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:10,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:10,428 INFO L87 Difference]: Start difference. First operand 3254 states and 5783 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:11,282 INFO L93 Difference]: Finished difference Result 5290 states and 9115 transitions. [2025-03-16 20:05:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:11,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:11,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:11,300 INFO L225 Difference]: With dead ends: 5290 [2025-03-16 20:05:11,300 INFO L226 Difference]: Without dead ends: 4176 [2025-03-16 20:05:11,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:11,306 INFO L435 NwaCegarLoop]: 4784 mSDtfsCounter, 5154 mSDsluCounter, 14411 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5175 SdHoareTripleChecker+Valid, 19195 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:11,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5175 Valid, 19195 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:05:11,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2025-03-16 20:05:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 4018. [2025-03-16 20:05:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 3863 states have (on average 1.753559409785141) internal successors, (6774), 3872 states have internal predecessors, (6774), 117 states have call successors, (117), 31 states have call predecessors, (117), 36 states have return successors, (131), 118 states have call predecessors, (131), 115 states have call successors, (131) [2025-03-16 20:05:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 7022 transitions. [2025-03-16 20:05:11,427 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 7022 transitions. Word has length 172 [2025-03-16 20:05:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:11,428 INFO L471 AbstractCegarLoop]: Abstraction has 4018 states and 7022 transitions. [2025-03-16 20:05:11,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 7022 transitions. [2025-03-16 20:05:11,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:11,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:11,430 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] [2025-03-16 20:05:11,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:05:11,431 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:11,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:11,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1418249958, now seen corresponding path program 1 times [2025-03-16 20:05:11,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:11,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169917900] [2025-03-16 20:05:11,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:11,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:11,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:11,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:11,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:11,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:11,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:11,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:11,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169917900] [2025-03-16 20:05:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169917900] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:11,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:11,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726551398] [2025-03-16 20:05:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:11,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:11,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:11,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:11,613 INFO L87 Difference]: Start difference. First operand 4018 states and 7022 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:12,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:12,415 INFO L93 Difference]: Finished difference Result 7766 states and 13204 transitions. [2025-03-16 20:05:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:12,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:12,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:12,437 INFO L225 Difference]: With dead ends: 7766 [2025-03-16 20:05:12,437 INFO L226 Difference]: Without dead ends: 5888 [2025-03-16 20:05:12,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:12,445 INFO L435 NwaCegarLoop]: 4781 mSDtfsCounter, 5149 mSDsluCounter, 14402 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 19183 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:12,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5170 Valid, 19183 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:05:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2025-03-16 20:05:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5687. [2025-03-16 20:05:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5406 states have (on average 1.7229004809470958) internal successors, (9314), 5429 states have internal predecessors, (9314), 205 states have call successors, (205), 55 states have call predecessors, (205), 74 states have return successors, (267), 210 states have call predecessors, (267), 203 states have call successors, (267) [2025-03-16 20:05:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 9786 transitions. [2025-03-16 20:05:12,589 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 9786 transitions. Word has length 172 [2025-03-16 20:05:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:12,589 INFO L471 AbstractCegarLoop]: Abstraction has 5687 states and 9786 transitions. [2025-03-16 20:05:12,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 9786 transitions. [2025-03-16 20:05:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:12,592 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:12,592 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] [2025-03-16 20:05:12,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:05:12,593 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:12,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:12,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1928227609, now seen corresponding path program 1 times [2025-03-16 20:05:12,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:12,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174933343] [2025-03-16 20:05:12,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:12,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:12,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:12,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:12,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:12,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:12,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174933343] [2025-03-16 20:05:12,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174933343] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:12,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:12,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:12,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758039851] [2025-03-16 20:05:12,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:12,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:12,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:12,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:12,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:12,735 INFO L87 Difference]: Start difference. First operand 5687 states and 9786 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:13,542 INFO L93 Difference]: Finished difference Result 13263 states and 22514 transitions. [2025-03-16 20:05:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:13,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:13,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:13,581 INFO L225 Difference]: With dead ends: 13263 [2025-03-16 20:05:13,584 INFO L226 Difference]: Without dead ends: 9716 [2025-03-16 20:05:13,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:13,594 INFO L435 NwaCegarLoop]: 4778 mSDtfsCounter, 5144 mSDsluCounter, 14393 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5165 SdHoareTripleChecker+Valid, 19171 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:13,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5165 Valid, 19171 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:05:13,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9716 states. [2025-03-16 20:05:13,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9716 to 9430. [2025-03-16 20:05:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7058227277846605) internal successors, (15146), 8948 states have internal predecessors, (15146), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:05:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16162 transitions. [2025-03-16 20:05:13,821 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16162 transitions. Word has length 172 [2025-03-16 20:05:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:13,822 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16162 transitions. [2025-03-16 20:05:13,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16162 transitions. [2025-03-16 20:05:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:13,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:13,826 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] [2025-03-16 20:05:13,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:05:13,827 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:13,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1759083834, now seen corresponding path program 1 times [2025-03-16 20:05:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707488815] [2025-03-16 20:05:13,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:13,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:13,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:13,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:13,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707488815] [2025-03-16 20:05:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707488815] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:13,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:13,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:13,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419688886] [2025-03-16 20:05:13,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:13,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:13,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:13,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:13,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:13,940 INFO L87 Difference]: Start difference. First operand 9430 states and 16162 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:14,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:14,356 INFO L93 Difference]: Finished difference Result 18546 states and 32026 transitions. [2025-03-16 20:05:14,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:14,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:14,392 INFO L225 Difference]: With dead ends: 18546 [2025-03-16 20:05:14,392 INFO L226 Difference]: Without dead ends: 11256 [2025-03-16 20:05:14,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:14,413 INFO L435 NwaCegarLoop]: 4429 mSDtfsCounter, 4799 mSDsluCounter, 8690 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 13119 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:14,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4820 Valid, 13119 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11256 states. [2025-03-16 20:05:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11256 to 9430. [2025-03-16 20:05:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7039080977587566) internal successors, (15129), 8948 states have internal predecessors, (15129), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:05:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16145 transitions. [2025-03-16 20:05:14,756 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16145 transitions. Word has length 172 [2025-03-16 20:05:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:14,757 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16145 transitions. [2025-03-16 20:05:14,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:14,757 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16145 transitions. [2025-03-16 20:05:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:14,762 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:14,762 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] [2025-03-16 20:05:14,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:05:14,763 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:14,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:14,763 INFO L85 PathProgramCache]: Analyzing trace with hash 601677063, now seen corresponding path program 1 times [2025-03-16 20:05:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:14,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999891993] [2025-03-16 20:05:14,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:14,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:14,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:14,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:14,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:14,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:14,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:14,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999891993] [2025-03-16 20:05:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999891993] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:14,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:14,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:14,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779006592] [2025-03-16 20:05:14,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:14,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:14,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:14,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:14,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:14,886 INFO L87 Difference]: Start difference. First operand 9430 states and 16145 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:15,322 INFO L93 Difference]: Finished difference Result 18463 states and 31826 transitions. [2025-03-16 20:05:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:15,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:15,355 INFO L225 Difference]: With dead ends: 18463 [2025-03-16 20:05:15,357 INFO L226 Difference]: Without dead ends: 11173 [2025-03-16 20:05:15,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:15,380 INFO L435 NwaCegarLoop]: 4426 mSDtfsCounter, 4796 mSDsluCounter, 8685 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 13111 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:15,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4817 Valid, 13111 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11173 states. [2025-03-16 20:05:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11173 to 9430. [2025-03-16 20:05:15,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7019934677328528) internal successors, (15112), 8948 states have internal predecessors, (15112), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:05:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16128 transitions. [2025-03-16 20:05:15,617 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16128 transitions. Word has length 172 [2025-03-16 20:05:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:15,618 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16128 transitions. [2025-03-16 20:05:15,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:15,618 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16128 transitions. [2025-03-16 20:05:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:15,622 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:15,622 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] [2025-03-16 20:05:15,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:05:15,622 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:15,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:15,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1816021338, now seen corresponding path program 1 times [2025-03-16 20:05:15,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:15,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104385822] [2025-03-16 20:05:15,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:15,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:15,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:15,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:15,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:15,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:15,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:15,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104385822] [2025-03-16 20:05:15,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104385822] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:15,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:15,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:15,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068305453] [2025-03-16 20:05:15,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:15,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:15,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:15,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:15,752 INFO L87 Difference]: Start difference. First operand 9430 states and 16128 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:16,645 INFO L93 Difference]: Finished difference Result 25618 states and 44006 transitions. [2025-03-16 20:05:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:16,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:16,702 INFO L225 Difference]: With dead ends: 25618 [2025-03-16 20:05:16,702 INFO L226 Difference]: Without dead ends: 18328 [2025-03-16 20:05:16,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:16,728 INFO L435 NwaCegarLoop]: 4765 mSDtfsCounter, 5123 mSDsluCounter, 14356 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 19121 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:16,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5144 Valid, 19121 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:05:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18328 states. [2025-03-16 20:05:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18328 to 17915. [2025-03-16 20:05:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.7037567084078713) internal successors, (28572), 16985 states have internal predecessors, (28572), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:05:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 31060 transitions. [2025-03-16 20:05:17,267 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 31060 transitions. Word has length 172 [2025-03-16 20:05:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:17,268 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 31060 transitions. [2025-03-16 20:05:17,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 31060 transitions. [2025-03-16 20:05:17,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:17,277 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:17,277 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] [2025-03-16 20:05:17,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:05:17,277 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:17,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1894011609, now seen corresponding path program 1 times [2025-03-16 20:05:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700319346] [2025-03-16 20:05:17,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:17,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:17,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:17,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:17,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:17,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:17,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700319346] [2025-03-16 20:05:17,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700319346] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:17,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:17,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413579024] [2025-03-16 20:05:17,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:17,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:17,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:17,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:17,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:17,404 INFO L87 Difference]: Start difference. First operand 17915 states and 31060 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:18,158 INFO L93 Difference]: Finished difference Result 38345 states and 67794 transitions. [2025-03-16 20:05:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:18,226 INFO L225 Difference]: With dead ends: 38345 [2025-03-16 20:05:18,226 INFO L226 Difference]: Without dead ends: 22570 [2025-03-16 20:05:18,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:18,264 INFO L435 NwaCegarLoop]: 4421 mSDtfsCounter, 4792 mSDsluCounter, 8676 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 13097 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:18,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4813 Valid, 13097 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22570 states. [2025-03-16 20:05:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22570 to 17915. [2025-03-16 20:05:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.701788908765653) internal successors, (28539), 16985 states have internal predecessors, (28539), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:05:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 31027 transitions. [2025-03-16 20:05:18,810 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 31027 transitions. Word has length 172 [2025-03-16 20:05:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:18,811 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 31027 transitions. [2025-03-16 20:05:18,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 31027 transitions. [2025-03-16 20:05:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:18,818 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:18,818 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] [2025-03-16 20:05:18,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:05:18,818 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:18,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:18,819 INFO L85 PathProgramCache]: Analyzing trace with hash 458777222, now seen corresponding path program 1 times [2025-03-16 20:05:18,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:18,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078453074] [2025-03-16 20:05:18,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:18,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:18,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:18,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:18,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:18,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:18,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078453074] [2025-03-16 20:05:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078453074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:18,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:18,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439425032] [2025-03-16 20:05:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:18,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:18,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:18,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:18,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:18,914 INFO L87 Difference]: Start difference. First operand 17915 states and 31027 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:19,590 INFO L93 Difference]: Finished difference Result 37855 states and 66748 transitions. [2025-03-16 20:05:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:19,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:19,638 INFO L225 Difference]: With dead ends: 37855 [2025-03-16 20:05:19,639 INFO L226 Difference]: Without dead ends: 22080 [2025-03-16 20:05:19,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:19,660 INFO L435 NwaCegarLoop]: 4416 mSDtfsCounter, 4788 mSDsluCounter, 8667 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 13083 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:19,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 13083 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22080 states. [2025-03-16 20:05:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22080 to 17915. [2025-03-16 20:05:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.6998211091234348) internal successors, (28506), 16985 states have internal predecessors, (28506), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:05:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 30994 transitions. [2025-03-16 20:05:20,117 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 30994 transitions. Word has length 172 [2025-03-16 20:05:20,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:20,120 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 30994 transitions. [2025-03-16 20:05:20,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 30994 transitions. [2025-03-16 20:05:20,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:20,126 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:20,126 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] [2025-03-16 20:05:20,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:05:20,127 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:20,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:20,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1538319269, now seen corresponding path program 1 times [2025-03-16 20:05:20,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:20,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581310396] [2025-03-16 20:05:20,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:20,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:20,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:20,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:20,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:20,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:20,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581310396] [2025-03-16 20:05:20,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581310396] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:20,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074302040] [2025-03-16 20:05:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:20,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:20,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:20,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:20,228 INFO L87 Difference]: Start difference. First operand 17915 states and 30994 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:21,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:21,441 INFO L93 Difference]: Finished difference Result 53521 states and 94534 transitions. [2025-03-16 20:05:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:21,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:21,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:21,560 INFO L225 Difference]: With dead ends: 53521 [2025-03-16 20:05:21,560 INFO L226 Difference]: Without dead ends: 37746 [2025-03-16 20:05:21,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:21,611 INFO L435 NwaCegarLoop]: 4748 mSDtfsCounter, 5099 mSDsluCounter, 14309 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5120 SdHoareTripleChecker+Valid, 19057 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:21,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5120 Valid, 19057 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:05:21,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37746 states. [2025-03-16 20:05:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37746 to 37153. [2025-03-16 20:05:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37153 states, 34658 states have (on average 1.7137745974955276) internal successors, (59396), 35327 states have internal predecessors, (59396), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 1056 states have return successors, (5531), 1498 states have call predecessors, (5531), 1435 states have call successors, (5531) [2025-03-16 20:05:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37153 states to 37153 states and 66364 transitions. [2025-03-16 20:05:23,393 INFO L78 Accepts]: Start accepts. Automaton has 37153 states and 66364 transitions. Word has length 172 [2025-03-16 20:05:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:23,393 INFO L471 AbstractCegarLoop]: Abstraction has 37153 states and 66364 transitions. [2025-03-16 20:05:23,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 37153 states and 66364 transitions. [2025-03-16 20:05:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:23,404 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:23,404 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] [2025-03-16 20:05:23,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:05:23,404 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:23,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1573143206, now seen corresponding path program 1 times [2025-03-16 20:05:23,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:23,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46093999] [2025-03-16 20:05:23,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:23,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:23,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:23,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:23,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:23,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46093999] [2025-03-16 20:05:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46093999] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:23,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:23,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:23,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599895333] [2025-03-16 20:05:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:23,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:23,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:23,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:23,545 INFO L87 Difference]: Start difference. First operand 37153 states and 66364 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:25,854 INFO L93 Difference]: Finished difference Result 123975 states and 228859 transitions. [2025-03-16 20:05:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:25,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:25,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:26,163 INFO L225 Difference]: With dead ends: 123975 [2025-03-16 20:05:26,163 INFO L226 Difference]: Without dead ends: 88962 [2025-03-16 20:05:26,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:26,265 INFO L435 NwaCegarLoop]: 4743 mSDtfsCounter, 5456 mSDsluCounter, 14289 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5491 SdHoareTripleChecker+Valid, 19032 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:26,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5491 Valid, 19032 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:05:26,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88962 states. [2025-03-16 20:05:29,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88962 to 82484. [2025-03-16 20:05:29,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82484 states, 76867 states have (on average 1.7387435440436079) internal successors, (133652), 78930 states have internal predecessors, (133652), 2781 states have call successors, (2781), 775 states have call predecessors, (2781), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 20:05:29,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82484 states to 82484 states and 155596 transitions. [2025-03-16 20:05:29,610 INFO L78 Accepts]: Start accepts. Automaton has 82484 states and 155596 transitions. Word has length 172 [2025-03-16 20:05:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:29,613 INFO L471 AbstractCegarLoop]: Abstraction has 82484 states and 155596 transitions. [2025-03-16 20:05:29,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:29,615 INFO L276 IsEmpty]: Start isEmpty. Operand 82484 states and 155596 transitions. [2025-03-16 20:05:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:29,630 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:29,630 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] [2025-03-16 20:05:29,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:05:29,631 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:29,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:29,632 INFO L85 PathProgramCache]: Analyzing trace with hash -365396091, now seen corresponding path program 1 times [2025-03-16 20:05:29,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:29,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108906618] [2025-03-16 20:05:29,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:29,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:29,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:29,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:29,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:29,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:29,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:29,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108906618] [2025-03-16 20:05:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108906618] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:29,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16920019] [2025-03-16 20:05:29,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:29,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:29,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:29,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:29,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:29,728 INFO L87 Difference]: Start difference. First operand 82484 states and 155596 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:33,366 INFO L93 Difference]: Finished difference Result 193474 states and 378568 transitions. [2025-03-16 20:05:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:33,947 INFO L225 Difference]: With dead ends: 193474 [2025-03-16 20:05:33,947 INFO L226 Difference]: Without dead ends: 113130 [2025-03-16 20:05:34,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:34,076 INFO L435 NwaCegarLoop]: 4409 mSDtfsCounter, 4781 mSDsluCounter, 8652 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 13061 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:34,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 13061 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113130 states. [2025-03-16 20:05:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113130 to 82484. [2025-03-16 20:05:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82484 states, 76867 states have (on average 1.737065320618731) internal successors, (133523), 78930 states have internal predecessors, (133523), 2781 states have call successors, (2781), 775 states have call predecessors, (2781), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 20:05:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82484 states to 82484 states and 155467 transitions. [2025-03-16 20:05:37,835 INFO L78 Accepts]: Start accepts. Automaton has 82484 states and 155467 transitions. Word has length 172 [2025-03-16 20:05:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:37,835 INFO L471 AbstractCegarLoop]: Abstraction has 82484 states and 155467 transitions. [2025-03-16 20:05:37,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 82484 states and 155467 transitions. [2025-03-16 20:05:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:37,856 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:37,856 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] [2025-03-16 20:05:37,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 20:05:37,856 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:37,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1813402938, now seen corresponding path program 1 times [2025-03-16 20:05:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059747813] [2025-03-16 20:05:37,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:37,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:37,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:37,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:37,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:37,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059747813] [2025-03-16 20:05:37,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059747813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:37,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:37,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585295328] [2025-03-16 20:05:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:37,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:37,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:37,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:37,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:37,994 INFO L87 Difference]: Start difference. First operand 82484 states and 155467 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:43,885 INFO L93 Difference]: Finished difference Result 281874 states and 558902 transitions. [2025-03-16 20:05:43,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:43,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 20:05:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:45,198 INFO L225 Difference]: With dead ends: 281874 [2025-03-16 20:05:45,198 INFO L226 Difference]: Without dead ends: 201530 [2025-03-16 20:05:45,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:45,414 INFO L435 NwaCegarLoop]: 4735 mSDtfsCounter, 5389 mSDsluCounter, 14266 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5424 SdHoareTripleChecker+Valid, 19001 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:45,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5424 Valid, 19001 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:05:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201530 states. [2025-03-16 20:05:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201530 to 190450. [2025-03-16 20:05:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190450 states, 177195 states have (on average 1.762651316346398) internal successors, (312333), 183504 states have internal predecessors, (312333), 5405 states have call successors, (5405), 1543 states have call predecessors, (5405), 7848 states have return successors, (70939), 5658 states have call predecessors, (70939), 5403 states have call successors, (70939) [2025-03-16 20:05:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190450 states to 190450 states and 388677 transitions. [2025-03-16 20:05:55,141 INFO L78 Accepts]: Start accepts. Automaton has 190450 states and 388677 transitions. Word has length 172 [2025-03-16 20:05:55,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:55,141 INFO L471 AbstractCegarLoop]: Abstraction has 190450 states and 388677 transitions. [2025-03-16 20:05:55,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:05:55,141 INFO L276 IsEmpty]: Start isEmpty. Operand 190450 states and 388677 transitions. [2025-03-16 20:05:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 20:05:55,187 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:55,187 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] [2025-03-16 20:05:55,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 20:05:55,187 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:55,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:55,188 INFO L85 PathProgramCache]: Analyzing trace with hash -474639515, now seen corresponding path program 1 times [2025-03-16 20:05:55,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:55,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402501073] [2025-03-16 20:05:55,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:55,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:55,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 20:05:55,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 20:05:55,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:55,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:05:55,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402501073] [2025-03-16 20:05:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402501073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:55,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:55,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:55,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459372640] [2025-03-16 20:05:55,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:55,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:55,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:55,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:55,302 INFO L87 Difference]: Start difference. First operand 190450 states and 388677 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)