./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.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 ad834a4fb5f4154353fe834bdf1b25d8394c06509e997c3a1b1b485e0c0b77f0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 07:00:35,216 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 07:00:35,257 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 07:00:35,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 07:00:35,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 07:00:35,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 07:00:35,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 07:00:35,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 07:00:35,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 07:00:35,287 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 07:00:35,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 07:00:35,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 07:00:35,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 07:00:35,288 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 07:00:35,289 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 07:00:35,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 07:00:35,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 07:00:35,290 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 07:00:35,291 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 07:00:35,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 07:00:35,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 07:00:35,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 07:00:35,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:00:35,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 07:00:35,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 07:00:35,291 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 07:00:35,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 07:00:35,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 07:00:35,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 07:00:35,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 07:00:35,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 07:00:35,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 07:00:35,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 07:00:35,292 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 -> ad834a4fb5f4154353fe834bdf1b25d8394c06509e997c3a1b1b485e0c0b77f0 [2025-03-08 07:00:35,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 07:00:35,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 07:00:35,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 07:00:35,530 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 07:00:35,530 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 07:00:35,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c [2025-03-08 07:00:36,691 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80c717cb/ab595f8eef4a453ab7f0dcff56c07180/FLAGf0665d8e4 [2025-03-08 07:00:37,166 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 07:00:37,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-1.c [2025-03-08 07:00:37,215 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80c717cb/ab595f8eef4a453ab7f0dcff56c07180/FLAGf0665d8e4 [2025-03-08 07:00:37,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d80c717cb/ab595f8eef4a453ab7f0dcff56c07180 [2025-03-08 07:00:37,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 07:00:37,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 07:00:37,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 07:00:37,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 07:00:37,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 07:00:37,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:00:37" (1/1) ... [2025-03-08 07:00:37,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608424ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:37, skipping insertion in model container [2025-03-08 07:00:37,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 07:00:37" (1/1) ... [2025-03-08 07:00:37,417 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 07:00:38,573 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_label49+token_ring.12.cil-1.c[380593,380606] [2025-03-08 07:00:38,605 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_label49+token_ring.12.cil-1.c[383339,383352] [2025-03-08 07:00:38,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:00:38,862 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 07:00:39,374 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_label49+token_ring.12.cil-1.c[380593,380606] [2025-03-08 07:00:39,379 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_label49+token_ring.12.cil-1.c[383339,383352] [2025-03-08 07:00:39,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 07:00:39,449 INFO L204 MainTranslator]: Completed translation [2025-03-08 07:00:39,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39 WrapperNode [2025-03-08 07:00:39,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 07:00:39,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 07:00:39,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 07:00:39,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 07:00:39,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:39,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:39,816 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13191 [2025-03-08 07:00:39,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 07:00:39,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 07:00:39,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 07:00:39,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 07:00:39,825 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:39,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,115 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 07:00:40,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,301 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 07:00:40,412 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 07:00:40,412 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 07:00:40,412 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 07:00:40,414 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (1/1) ... [2025-03-08 07:00:40,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 07:00:40,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 07:00:40,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 07:00:40,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 07:00:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 07:00:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 07:00:40,465 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 07:00:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 07:00:40,465 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 07:00:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 07:00:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 07:00:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-08 07:00:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-08 07:00:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 07:00:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 07:00:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 07:00:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 07:00:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 07:00:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 07:00:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 07:00:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 07:00:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 07:00:40,574 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 07:00:40,576 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 07:00:46,889 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 07:00:46,890 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 07:00:46,890 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 07:00:46,890 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 07:00:46,891 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 07:00:46,891 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 07:00:46,891 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 07:00:47,118 INFO L? ?]: Removed 1759 outVars from TransFormulas that were not future-live. [2025-03-08 07:00:47,118 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 07:00:47,180 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 07:00:47,181 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 07:00:47,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:00:47 BoogieIcfgContainer [2025-03-08 07:00:47,181 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 07:00:47,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 07:00:47,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 07:00:47,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 07:00:47,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 07:00:37" (1/3) ... [2025-03-08 07:00:47,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1812e0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:00:47, skipping insertion in model container [2025-03-08 07:00:47,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 07:00:39" (2/3) ... [2025-03-08 07:00:47,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1812e0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 07:00:47, skipping insertion in model container [2025-03-08 07:00:47,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 07:00:47" (3/3) ... [2025-03-08 07:00:47,188 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.12.cil-1.c [2025-03-08 07:00:47,199 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 07:00:47,203 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label49+token_ring.12.cil-1.c that has 8 procedures, 2571 locations, 1 initial locations, 16 loop locations, and 2 error locations. [2025-03-08 07:00:47,364 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 07:00:47,371 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;@76f52f2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 07:00:47,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 07:00:47,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2534 states have (on average 1.8370165745856353) internal successors, (4655), 2538 states have internal predecessors, (4655), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-08 07:00:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:47,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:47,397 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:47,398 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:47,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:47,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1449268349, now seen corresponding path program 1 times [2025-03-08 07:00:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:47,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358397162] [2025-03-08 07:00:47,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:47,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:47,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:47,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:47,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:47,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:47,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:47,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358397162] [2025-03-08 07:00:47,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358397162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:47,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:47,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259075306] [2025-03-08 07:00:47,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:47,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:47,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:47,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:47,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:47,939 INFO L87 Difference]: Start difference. First operand has 2571 states, 2534 states have (on average 1.8370165745856353) internal successors, (4655), 2538 states have internal predecessors, (4655), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:48,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:48,688 INFO L93 Difference]: Finished difference Result 5534 states and 10075 transitions. [2025-03-08 07:00:48,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 07:00:48,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:48,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:48,722 INFO L225 Difference]: With dead ends: 5534 [2025-03-08 07:00:48,723 INFO L226 Difference]: Without dead ends: 2913 [2025-03-08 07:00:48,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:48,737 INFO L435 NwaCegarLoop]: 4499 mSDtfsCounter, 5188 mSDsluCounter, 9264 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5208 SdHoareTripleChecker+Valid, 13763 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:48,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5208 Valid, 13763 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 07:00:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2913 states. [2025-03-08 07:00:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2913 to 2882. [2025-03-08 07:00:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.8002129169623846) internal successors, (5073), 2822 states have internal predecessors, (5073), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2025-03-08 07:00:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5170 transitions. [2025-03-08 07:00:48,903 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5170 transitions. Word has length 177 [2025-03-08 07:00:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:48,904 INFO L471 AbstractCegarLoop]: Abstraction has 2882 states and 5170 transitions. [2025-03-08 07:00:48,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5170 transitions. [2025-03-08 07:00:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:48,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:48,913 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:48,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 07:00:48,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:48,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:48,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1515370497, now seen corresponding path program 1 times [2025-03-08 07:00:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948770463] [2025-03-08 07:00:48,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:48,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:48,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:48,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:48,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:49,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948770463] [2025-03-08 07:00:49,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948770463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:49,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:49,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65501214] [2025-03-08 07:00:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:49,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:49,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:49,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:49,109 INFO L87 Difference]: Start difference. First operand 2882 states and 5170 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:49,491 INFO L93 Difference]: Finished difference Result 3701 states and 6501 transitions. [2025-03-08 07:00:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:00:49,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:49,504 INFO L225 Difference]: With dead ends: 3701 [2025-03-08 07:00:49,504 INFO L226 Difference]: Without dead ends: 2960 [2025-03-08 07:00:49,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:49,508 INFO L435 NwaCegarLoop]: 4418 mSDtfsCounter, 4782 mSDsluCounter, 8677 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 13095 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:49,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 13095 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:00:49,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2025-03-08 07:00:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 2882. [2025-03-08 07:00:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.7995031937544357) internal successors, (5071), 2822 states have internal predecessors, (5071), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2025-03-08 07:00:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5168 transitions. [2025-03-08 07:00:49,584 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5168 transitions. Word has length 177 [2025-03-08 07:00:49,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:49,584 INFO L471 AbstractCegarLoop]: Abstraction has 2882 states and 5168 transitions. [2025-03-08 07:00:49,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5168 transitions. [2025-03-08 07:00:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:49,586 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:49,586 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:49,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 07:00:49,587 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:49,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:49,587 INFO L85 PathProgramCache]: Analyzing trace with hash 812774658, now seen corresponding path program 1 times [2025-03-08 07:00:49,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:49,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589647699] [2025-03-08 07:00:49,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:49,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:49,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:49,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:49,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:49,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:49,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:49,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589647699] [2025-03-08 07:00:49,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589647699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:49,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:49,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:49,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752030771] [2025-03-08 07:00:49,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:49,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:49,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:49,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:49,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:49,801 INFO L87 Difference]: Start difference. First operand 2882 states and 5168 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:50,686 INFO L93 Difference]: Finished difference Result 4105 states and 7144 transitions. [2025-03-08 07:00:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:50,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:50,705 INFO L225 Difference]: With dead ends: 4105 [2025-03-08 07:00:50,706 INFO L226 Difference]: Without dead ends: 3364 [2025-03-08 07:00:50,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:00:50,711 INFO L435 NwaCegarLoop]: 4512 mSDtfsCounter, 5152 mSDsluCounter, 13691 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 18203 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:50,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 18203 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 07:00:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2025-03-08 07:00:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 3233. [2025-03-08 07:00:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3233 states, 3141 states have (on average 1.7758675581025152) internal successors, (5578), 3146 states have internal predecessors, (5578), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (72), 69 states have call predecessors, (72), 68 states have call successors, (72) [2025-03-08 07:00:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 5720 transitions. [2025-03-08 07:00:50,823 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 5720 transitions. Word has length 177 [2025-03-08 07:00:50,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:50,824 INFO L471 AbstractCegarLoop]: Abstraction has 3233 states and 5720 transitions. [2025-03-08 07:00:50,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 5720 transitions. [2025-03-08 07:00:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:50,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:50,826 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, 1, 1, 1, 1, 1] [2025-03-08 07:00:50,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 07:00:50,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:50,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1759941601, now seen corresponding path program 1 times [2025-03-08 07:00:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354159534] [2025-03-08 07:00:50,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:50,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:50,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:50,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:50,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:50,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:51,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:51,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354159534] [2025-03-08 07:00:51,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354159534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:51,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:51,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:51,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658163281] [2025-03-08 07:00:51,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:51,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:51,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:51,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:51,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:51,004 INFO L87 Difference]: Start difference. First operand 3233 states and 5720 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:51,826 INFO L93 Difference]: Finished difference Result 5225 states and 8933 transitions. [2025-03-08 07:00:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:51,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:51,844 INFO L225 Difference]: With dead ends: 5225 [2025-03-08 07:00:51,844 INFO L226 Difference]: Without dead ends: 4133 [2025-03-08 07:00:51,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:00:51,851 INFO L435 NwaCegarLoop]: 4746 mSDtfsCounter, 5117 mSDsluCounter, 14292 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5137 SdHoareTripleChecker+Valid, 19038 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:51,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5137 Valid, 19038 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 07:00:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2025-03-08 07:00:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3982. [2025-03-08 07:00:51,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 3832 states have (on average 1.7429540709812108) internal successors, (6679), 3841 states have internal predecessors, (6679), 112 states have call successors, (112), 31 states have call predecessors, (112), 36 states have return successors, (126), 113 states have call predecessors, (126), 110 states have call successors, (126) [2025-03-08 07:00:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 6917 transitions. [2025-03-08 07:00:51,995 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 6917 transitions. Word has length 177 [2025-03-08 07:00:51,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:51,995 INFO L471 AbstractCegarLoop]: Abstraction has 3982 states and 6917 transitions. [2025-03-08 07:00:51,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 6917 transitions. [2025-03-08 07:00:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:51,999 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:51,999 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:51,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 07:00:51,999 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:52,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1811735262, now seen corresponding path program 1 times [2025-03-08 07:00:52,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:52,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537937183] [2025-03-08 07:00:52,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:52,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:52,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:52,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:52,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:52,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:52,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537937183] [2025-03-08 07:00:52,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537937183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:52,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:52,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:52,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731128897] [2025-03-08 07:00:52,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:52,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:52,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:52,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:52,200 INFO L87 Difference]: Start difference. First operand 3982 states and 6917 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:53,147 INFO L93 Difference]: Finished difference Result 7648 states and 12880 transitions. [2025-03-08 07:00:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:53,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:53,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:53,168 INFO L225 Difference]: With dead ends: 7648 [2025-03-08 07:00:53,169 INFO L226 Difference]: Without dead ends: 5807 [2025-03-08 07:00:53,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:00:53,175 INFO L435 NwaCegarLoop]: 4743 mSDtfsCounter, 5112 mSDsluCounter, 14283 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 19026 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:53,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5132 Valid, 19026 Invalid, 1131 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 07:00:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2025-03-08 07:00:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5615. [2025-03-08 07:00:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5343 states have (on average 1.708965000935804) internal successors, (9131), 5366 states have internal predecessors, (9131), 196 states have call successors, (196), 55 states have call predecessors, (196), 74 states have return successors, (258), 201 states have call predecessors, (258), 194 states have call successors, (258) [2025-03-08 07:00:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 9585 transitions. [2025-03-08 07:00:53,351 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 9585 transitions. Word has length 177 [2025-03-08 07:00:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:53,352 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 9585 transitions. [2025-03-08 07:00:53,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 9585 transitions. [2025-03-08 07:00:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:53,359 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:53,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:53,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 07:00:53,360 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:53,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash -125835327, now seen corresponding path program 1 times [2025-03-08 07:00:53,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:53,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515190084] [2025-03-08 07:00:53,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:53,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:53,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:53,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:53,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:53,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:53,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:53,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515190084] [2025-03-08 07:00:53,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515190084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:53,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:53,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:53,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178103703] [2025-03-08 07:00:53,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:53,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:53,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:53,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:53,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:53,506 INFO L87 Difference]: Start difference. First operand 5615 states and 9585 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:54,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:54,265 INFO L93 Difference]: Finished difference Result 13015 states and 21858 transitions. [2025-03-08 07:00:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:54,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:54,315 INFO L225 Difference]: With dead ends: 13015 [2025-03-08 07:00:54,316 INFO L226 Difference]: Without dead ends: 9541 [2025-03-08 07:00:54,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:00:54,331 INFO L435 NwaCegarLoop]: 4740 mSDtfsCounter, 5107 mSDsluCounter, 14274 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 19014 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:54,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5127 Valid, 19014 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 07:00:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9541 states. [2025-03-08 07:00:54,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9541 to 9268. [2025-03-08 07:00:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 8734 states have (on average 1.6889168765743072) internal successors, (14751), 8803 states have internal predecessors, (14751), 364 states have call successors, (364), 103 states have call predecessors, (364), 168 states have return successors, (618), 377 states have call predecessors, (618), 362 states have call successors, (618) [2025-03-08 07:00:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 15733 transitions. [2025-03-08 07:00:54,726 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 15733 transitions. Word has length 177 [2025-03-08 07:00:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:54,726 INFO L471 AbstractCegarLoop]: Abstraction has 9268 states and 15733 transitions. [2025-03-08 07:00:54,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 15733 transitions. [2025-03-08 07:00:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:54,733 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:54,733 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:54,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 07:00:54,734 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:54,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash 67095874, now seen corresponding path program 1 times [2025-03-08 07:00:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978430641] [2025-03-08 07:00:54,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:54,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:54,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:54,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:54,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:54,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:54,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978430641] [2025-03-08 07:00:54,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978430641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:54,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:54,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:54,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662444371] [2025-03-08 07:00:54,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:54,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:54,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:54,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:54,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:54,875 INFO L87 Difference]: Start difference. First operand 9268 states and 15733 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:55,782 INFO L93 Difference]: Finished difference Result 25238 states and 43044 transitions. [2025-03-08 07:00:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:00:55,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:55,846 INFO L225 Difference]: With dead ends: 25238 [2025-03-08 07:00:55,847 INFO L226 Difference]: Without dead ends: 18111 [2025-03-08 07:00:55,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:00:55,877 INFO L435 NwaCegarLoop]: 4737 mSDtfsCounter, 5102 mSDsluCounter, 14265 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5122 SdHoareTripleChecker+Valid, 19002 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:55,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5122 Valid, 19002 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 07:00:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18111 states. [2025-03-08 07:00:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18111 to 17681. [2025-03-08 07:00:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17681 states, 16569 states have (on average 1.6920152091254752) internal successors, (28035), 16784 states have internal predecessors, (28035), 700 states have call successors, (700), 199 states have call predecessors, (700), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2025-03-08 07:00:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17681 states to 17681 states and 30457 transitions. [2025-03-08 07:00:56,386 INFO L78 Accepts]: Start accepts. Automaton has 17681 states and 30457 transitions. Word has length 177 [2025-03-08 07:00:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:56,386 INFO L471 AbstractCegarLoop]: Abstraction has 17681 states and 30457 transitions. [2025-03-08 07:00:56,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 17681 states and 30457 transitions. [2025-03-08 07:00:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:56,394 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:56,394 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:56,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 07:00:56,394 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:56,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash -65227871, now seen corresponding path program 1 times [2025-03-08 07:00:56,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:56,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491248006] [2025-03-08 07:00:56,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:56,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:56,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:56,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:56,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:56,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:56,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491248006] [2025-03-08 07:00:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491248006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:56,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483076023] [2025-03-08 07:00:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:56,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:56,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:56,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:56,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:56,514 INFO L87 Difference]: Start difference. First operand 17681 states and 30457 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:57,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:57,313 INFO L93 Difference]: Finished difference Result 38121 states and 67078 transitions. [2025-03-08 07:00:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:00:57,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:57,397 INFO L225 Difference]: With dead ends: 38121 [2025-03-08 07:00:57,398 INFO L226 Difference]: Without dead ends: 22581 [2025-03-08 07:00:57,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:57,451 INFO L435 NwaCegarLoop]: 4405 mSDtfsCounter, 4774 mSDsluCounter, 8652 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 13057 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:57,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4794 Valid, 13057 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:00:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22581 states. [2025-03-08 07:00:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22581 to 17681. [2025-03-08 07:00:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17681 states, 16569 states have (on average 1.6900235379322832) internal successors, (28002), 16784 states have internal predecessors, (28002), 700 states have call successors, (700), 199 states have call predecessors, (700), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2025-03-08 07:00:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17681 states to 17681 states and 30424 transitions. [2025-03-08 07:00:58,205 INFO L78 Accepts]: Start accepts. Automaton has 17681 states and 30424 transitions. Word has length 177 [2025-03-08 07:00:58,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:58,206 INFO L471 AbstractCegarLoop]: Abstraction has 17681 states and 30424 transitions. [2025-03-08 07:00:58,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:58,206 INFO L276 IsEmpty]: Start isEmpty. Operand 17681 states and 30424 transitions. [2025-03-08 07:00:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:58,215 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:58,215 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:58,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 07:00:58,215 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:58,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 900334946, now seen corresponding path program 1 times [2025-03-08 07:00:58,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:58,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490591217] [2025-03-08 07:00:58,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:58,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:58,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:58,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:58,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:58,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:58,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:58,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490591217] [2025-03-08 07:00:58,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490591217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:58,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:58,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:00:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138216519] [2025-03-08 07:00:58,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:58,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:00:58,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:58,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:00:58,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:00:58,323 INFO L87 Difference]: Start difference. First operand 17681 states and 30424 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:00:58,944 INFO L93 Difference]: Finished difference Result 37876 states and 66522 transitions. [2025-03-08 07:00:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:00:58,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:00:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:00:59,044 INFO L225 Difference]: With dead ends: 37876 [2025-03-08 07:00:59,045 INFO L226 Difference]: Without dead ends: 22336 [2025-03-08 07:00:59,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:59,198 INFO L435 NwaCegarLoop]: 4402 mSDtfsCounter, 4771 mSDsluCounter, 8647 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 13049 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:00:59,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4791 Valid, 13049 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:00:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22336 states. [2025-03-08 07:00:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22336 to 17681. [2025-03-08 07:00:59,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17681 states, 16569 states have (on average 1.688031866739091) internal successors, (27969), 16784 states have internal predecessors, (27969), 700 states have call successors, (700), 199 states have call predecessors, (700), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2025-03-08 07:00:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17681 states to 17681 states and 30391 transitions. [2025-03-08 07:00:59,677 INFO L78 Accepts]: Start accepts. Automaton has 17681 states and 30391 transitions. Word has length 177 [2025-03-08 07:00:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:00:59,678 INFO L471 AbstractCegarLoop]: Abstraction has 17681 states and 30391 transitions. [2025-03-08 07:00:59,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:00:59,678 INFO L276 IsEmpty]: Start isEmpty. Operand 17681 states and 30391 transitions. [2025-03-08 07:00:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:00:59,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:00:59,686 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:00:59,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 07:00:59,686 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:00:59,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:00:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash 238745473, now seen corresponding path program 1 times [2025-03-08 07:00:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:00:59,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724538803] [2025-03-08 07:00:59,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:00:59,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:00:59,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:00:59,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:00:59,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:00:59,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:00:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:00:59,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:00:59,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724538803] [2025-03-08 07:00:59,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724538803] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:00:59,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:00:59,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:00:59,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574228727] [2025-03-08 07:00:59,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:00:59,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:00:59,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:00:59,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:00:59,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:00:59,819 INFO L87 Difference]: Start difference. First operand 17681 states and 30391 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:01:01,111 INFO L93 Difference]: Finished difference Result 53381 states and 93860 transitions. [2025-03-08 07:01:01,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:01:01,112 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:01:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:01:01,256 INFO L225 Difference]: With dead ends: 53381 [2025-03-08 07:01:01,256 INFO L226 Difference]: Without dead ends: 37841 [2025-03-08 07:01:01,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:01:01,306 INFO L435 NwaCegarLoop]: 4724 mSDtfsCounter, 5081 mSDsluCounter, 14228 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 18952 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 07:01:01,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5101 Valid, 18952 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 07:01:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37841 states. [2025-03-08 07:01:02,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37841 to 37180. [2025-03-08 07:01:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37180 states, 34750 states have (on average 1.7069640287769785) internal successors, (59317), 35419 states have internal predecessors, (59317), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-03-08 07:01:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37180 states to 37180 states and 66155 transitions. [2025-03-08 07:01:02,947 INFO L78 Accepts]: Start accepts. Automaton has 37180 states and 66155 transitions. Word has length 177 [2025-03-08 07:01:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:01:02,947 INFO L471 AbstractCegarLoop]: Abstraction has 37180 states and 66155 transitions. [2025-03-08 07:01:02,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 37180 states and 66155 transitions. [2025-03-08 07:01:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:01:02,959 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:02,960 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:02,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 07:01:02,960 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:02,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1187235202, now seen corresponding path program 1 times [2025-03-08 07:01:02,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:01:02,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096174928] [2025-03-08 07:01:02,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:02,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:01:02,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:01:02,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:01:02,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:02,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:01:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:01:03,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:01:03,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096174928] [2025-03-08 07:01:03,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096174928] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:01:03,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:01:03,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:01:03,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073255028] [2025-03-08 07:01:03,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:01:03,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:01:03,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:01:03,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:01:03,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:01:03,061 INFO L87 Difference]: Start difference. First operand 37180 states and 66155 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:04,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:01:04,498 INFO L93 Difference]: Finished difference Result 84646 states and 155206 transitions. [2025-03-08 07:01:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:01:04,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:01:04,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:01:04,687 INFO L225 Difference]: With dead ends: 84646 [2025-03-08 07:01:04,687 INFO L226 Difference]: Without dead ends: 49607 [2025-03-08 07:01:04,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:01:04,770 INFO L435 NwaCegarLoop]: 4364 mSDtfsCounter, 4798 mSDsluCounter, 8605 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4818 SdHoareTripleChecker+Valid, 12969 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:01:04,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4818 Valid, 12969 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:01:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49607 states. [2025-03-08 07:01:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49607 to 37180. [2025-03-08 07:01:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37180 states, 34750 states have (on average 1.705093525179856) internal successors, (59252), 35419 states have internal predecessors, (59252), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-03-08 07:01:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37180 states to 37180 states and 66090 transitions. [2025-03-08 07:01:06,442 INFO L78 Accepts]: Start accepts. Automaton has 37180 states and 66090 transitions. Word has length 177 [2025-03-08 07:01:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:01:06,442 INFO L471 AbstractCegarLoop]: Abstraction has 37180 states and 66090 transitions. [2025-03-08 07:01:06,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 37180 states and 66090 transitions. [2025-03-08 07:01:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:01:06,456 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:06,456 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:06,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 07:01:06,457 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:06,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:06,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1356378977, now seen corresponding path program 1 times [2025-03-08 07:01:06,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:01:06,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614463187] [2025-03-08 07:01:06,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:01:06,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:01:06,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:01:06,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:06,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:01:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:01:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:01:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614463187] [2025-03-08 07:01:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614463187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:01:06,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:01:06,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:01:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884092347] [2025-03-08 07:01:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:01:06,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:01:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:01:06,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:01:06,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:01:06,567 INFO L87 Difference]: Start difference. First operand 37180 states and 66090 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:01:08,104 INFO L93 Difference]: Finished difference Result 83915 states and 153614 transitions. [2025-03-08 07:01:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:01:08,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:01:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:01:08,272 INFO L225 Difference]: With dead ends: 83915 [2025-03-08 07:01:08,272 INFO L226 Difference]: Without dead ends: 48876 [2025-03-08 07:01:08,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:01:08,348 INFO L435 NwaCegarLoop]: 4394 mSDtfsCounter, 4764 mSDsluCounter, 8633 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 13027 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 07:01:08,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4784 Valid, 13027 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 07:01:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48876 states. [2025-03-08 07:01:09,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48876 to 37180. [2025-03-08 07:01:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37180 states, 34750 states have (on average 1.7032230215827338) internal successors, (59187), 35419 states have internal predecessors, (59187), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-03-08 07:01:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37180 states to 37180 states and 66025 transitions. [2025-03-08 07:01:10,081 INFO L78 Accepts]: Start accepts. Automaton has 37180 states and 66025 transitions. Word has length 177 [2025-03-08 07:01:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:01:10,081 INFO L471 AbstractCegarLoop]: Abstraction has 37180 states and 66025 transitions. [2025-03-08 07:01:10,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 37180 states and 66025 transitions. [2025-03-08 07:01:10,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:01:10,093 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:10,094 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:10,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 07:01:10,094 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:10,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash -577827422, now seen corresponding path program 1 times [2025-03-08 07:01:10,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:01:10,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044076121] [2025-03-08 07:01:10,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:10,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:01:10,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:01:10,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:01:10,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:10,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:01:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:01:10,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:01:10,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044076121] [2025-03-08 07:01:10,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044076121] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:01:10,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:01:10,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:01:10,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583315745] [2025-03-08 07:01:10,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:01:10,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:01:10,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:01:10,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:01:10,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:01:10,208 INFO L87 Difference]: Start difference. First operand 37180 states and 66025 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:01:12,171 INFO L93 Difference]: Finished difference Result 83184 states and 152022 transitions. [2025-03-08 07:01:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 07:01:12,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:01:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:01:12,428 INFO L225 Difference]: With dead ends: 83184 [2025-03-08 07:01:12,428 INFO L226 Difference]: Without dead ends: 48145 [2025-03-08 07:01:12,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:01:12,689 INFO L435 NwaCegarLoop]: 4391 mSDtfsCounter, 4761 mSDsluCounter, 8628 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 13019 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 07:01:12,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4781 Valid, 13019 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 07:01:12,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48145 states. [2025-03-08 07:01:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48145 to 37180. [2025-03-08 07:01:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37180 states, 34750 states have (on average 1.7013525179856115) internal successors, (59122), 35419 states have internal predecessors, (59122), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2025-03-08 07:01:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37180 states to 37180 states and 65960 transitions. [2025-03-08 07:01:14,109 INFO L78 Accepts]: Start accepts. Automaton has 37180 states and 65960 transitions. Word has length 177 [2025-03-08 07:01:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:01:14,109 INFO L471 AbstractCegarLoop]: Abstraction has 37180 states and 65960 transitions. [2025-03-08 07:01:14,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37180 states and 65960 transitions. [2025-03-08 07:01:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:01:14,118 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:14,118 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:14,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 07:01:14,118 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:14,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1299441473, now seen corresponding path program 1 times [2025-03-08 07:01:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:01:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134734655] [2025-03-08 07:01:14,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:01:14,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:01:14,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:01:14,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:14,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:01:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:01:14,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:01:14,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134734655] [2025-03-08 07:01:14,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134734655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:01:14,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:01:14,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 07:01:14,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629530162] [2025-03-08 07:01:14,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:01:14,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 07:01:14,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:01:14,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 07:01:14,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 07:01:14,207 INFO L87 Difference]: Start difference. First operand 37180 states and 65960 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 07:01:16,660 INFO L93 Difference]: Finished difference Result 123714 states and 226270 transitions. [2025-03-08 07:01:16,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 07:01:16,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 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 177 [2025-03-08 07:01:16,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 07:01:16,997 INFO L225 Difference]: With dead ends: 123714 [2025-03-08 07:01:16,998 INFO L226 Difference]: Without dead ends: 88675 [2025-03-08 07:01:17,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 07:01:17,106 INFO L435 NwaCegarLoop]: 4704 mSDtfsCounter, 5426 mSDsluCounter, 14166 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5459 SdHoareTripleChecker+Valid, 18870 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 07:01:17,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5459 Valid, 18870 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 07:01:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88675 states. [2025-03-08 07:01:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88675 to 81818. [2025-03-08 07:01:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81818 states, 76330 states have (on average 1.7250360277741386) internal successors, (131672), 78393 states have internal predecessors, (131672), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 2834 states have return successors, (19034), 2777 states have call predecessors, (19034), 2650 states have call successors, (19034) [2025-03-08 07:01:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81818 states to 81818 states and 153358 transitions. [2025-03-08 07:01:20,886 INFO L78 Accepts]: Start accepts. Automaton has 81818 states and 153358 transitions. Word has length 177 [2025-03-08 07:01:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 07:01:20,887 INFO L471 AbstractCegarLoop]: Abstraction has 81818 states and 153358 transitions. [2025-03-08 07:01:20,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 5 states have internal predecessors, (166), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 07:01:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 81818 states and 153358 transitions. [2025-03-08 07:01:20,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 07:01:20,902 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 07:01:20,902 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 07:01:20,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 07:01:20,903 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 07:01:20,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 07:01:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1221451202, now seen corresponding path program 1 times [2025-03-08 07:01:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 07:01:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872572403] [2025-03-08 07:01:20,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 07:01:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 07:01:20,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 07:01:20,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 07:01:20,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 07:01:20,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 07:01:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 07:01:20,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 07:01:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872572403] [2025-03-08 07:01:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872572403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 07:01:20,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 07:01:20,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 07:01:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636022184] [2025-03-08 07:01:20,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 07:01:20,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 07:01:20,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 07:01:20,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 07:01:20,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 07:01:20,975 INFO L87 Difference]: Start difference. First operand 81818 states and 153358 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 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)