./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.09.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 0e78e762388a6c3c1086d6b78561f9d228d7d6651a9ae559f7246d5d2e2293d4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:56:02,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:56:02,210 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:56:02,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:56:02,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:56:02,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:56:02,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:56:02,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:56:02,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:56:02,236 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:56:02,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:56:02,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:56:02,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:56:02,237 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:56:02,237 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:56:02,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:56:02,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:56:02,237 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:56:02,238 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:56:02,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:56:02,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:56:02,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:56:02,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:02,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:56:02,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:56:02,239 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:56:02,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:56:02,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:56:02,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:56:02,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:56:02,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:56:02,240 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:56:02,240 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:56:02,240 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 -> 0e78e762388a6c3c1086d6b78561f9d228d7d6651a9ae559f7246d5d2e2293d4 [2025-03-16 19:56:02,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:56:02,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:56:02,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:56:02,461 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:56:02,461 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:56:02,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.09.cil-1.c [2025-03-16 19:56:03,656 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe5d4807/10478b184aed417f99394775f28539a7/FLAG79830e6d4 [2025-03-16 19:56:04,253 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:56:04,254 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.09.cil-1.c [2025-03-16 19:56:04,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe5d4807/10478b184aed417f99394775f28539a7/FLAG79830e6d4 [2025-03-16 19:56:04,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe5d4807/10478b184aed417f99394775f28539a7 [2025-03-16 19:56:04,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:56:04,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:56:04,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:04,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:56:04,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:56:04,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:04" (1/1) ... [2025-03-16 19:56:04,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f460129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:04, skipping insertion in model container [2025-03-16 19:56:04,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:04" (1/1) ... [2025-03-16 19:56:04,848 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:56:05,879 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_label41+token_ring.09.cil-1.c[376251,376264] [2025-03-16 19:56:05,910 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_label41+token_ring.09.cil-1.c[383339,383352] [2025-03-16 19:56:06,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:06,110 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:56:06,602 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_label41+token_ring.09.cil-1.c[376251,376264] [2025-03-16 19:56:06,608 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_label41+token_ring.09.cil-1.c[383339,383352] [2025-03-16 19:56:06,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:06,667 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:56:06,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06 WrapperNode [2025-03-16 19:56:06,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:06,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:06,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:56:06,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:56:06,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:06,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:06,985 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13014 [2025-03-16 19:56:06,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:06,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:56:06,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:56:06,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:56:06,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:06,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,179 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:56:07,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,311 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,370 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:56:07,468 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:56:07,468 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:56:07,468 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:56:07,469 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (1/1) ... [2025-03-16 19:56:07,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:07,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:56:07,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:56:07,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:56:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:56:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:56:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:56:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:56:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:56:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:56:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:56:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:56:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:56:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:56:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:56:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:56:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:56:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:56:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:56:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:56:07,718 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:56:07,720 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:56:13,680 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:56:13,680 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:56:13,680 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:56:13,681 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:56:13,681 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:56:13,682 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:56:13,682 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:56:13,972 INFO L? ?]: Removed 1725 outVars from TransFormulas that were not future-live. [2025-03-16 19:56:13,973 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:56:14,032 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:56:14,033 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:56:14,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:56:14 BoogieIcfgContainer [2025-03-16 19:56:14,033 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:56:14,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:56:14,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:56:14,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:56:14,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:56:04" (1/3) ... [2025-03-16 19:56:14,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396768d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:56:14, skipping insertion in model container [2025-03-16 19:56:14,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:06" (2/3) ... [2025-03-16 19:56:14,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396768d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:56:14, skipping insertion in model container [2025-03-16 19:56:14,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:56:14" (3/3) ... [2025-03-16 19:56:14,040 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.09.cil-1.c [2025-03-16 19:56:14,050 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:56:14,053 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label41+token_ring.09.cil-1.c that has 7 procedures, 2412 locations, 1 initial locations, 13 loop locations, and 2 error locations. [2025-03-16 19:56:14,144 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:56:14,153 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;@14ae730d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:56:14,154 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:56:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 2412 states, 2381 states have (on average 1.868542629147417) internal successors, (4449), 2383 states have internal predecessors, (4449), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-16 19:56:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:14,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:14,174 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] [2025-03-16 19:56:14,175 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:14,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash -838048785, now seen corresponding path program 1 times [2025-03-16 19:56:14,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651635278] [2025-03-16 19:56:14,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:14,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:14,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:14,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:14,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:14,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:14,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651635278] [2025-03-16 19:56:14,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651635278] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:14,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:14,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:14,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916943529] [2025-03-16 19:56:14,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:14,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:14,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:14,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:14,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:14,738 INFO L87 Difference]: Start difference. First operand has 2412 states, 2381 states have (on average 1.868542629147417) internal successors, (4449), 2383 states have internal predecessors, (4449), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:15,383 INFO L93 Difference]: Finished difference Result 5120 states and 9482 transitions. [2025-03-16 19:56:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:56:15,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:15,402 INFO L225 Difference]: With dead ends: 5120 [2025-03-16 19:56:15,402 INFO L226 Difference]: Without dead ends: 2715 [2025-03-16 19:56:15,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:15,466 INFO L435 NwaCegarLoop]: 4325 mSDtfsCounter, 4827 mSDsluCounter, 8846 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4844 SdHoareTripleChecker+Valid, 13171 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:15,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4844 Valid, 13171 Invalid, 529 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:56:15,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2025-03-16 19:56:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2692. [2025-03-16 19:56:15,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2636 states have (on average 1.8163884673748103) internal successors, (4788), 2639 states have internal predecessors, (4788), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2025-03-16 19:56:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4871 transitions. [2025-03-16 19:56:15,599 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4871 transitions. Word has length 131 [2025-03-16 19:56:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:15,600 INFO L471 AbstractCegarLoop]: Abstraction has 2692 states and 4871 transitions. [2025-03-16 19:56:15,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4871 transitions. [2025-03-16 19:56:15,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:15,604 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:15,605 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] [2025-03-16 19:56:15,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:56:15,605 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:15,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:15,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1792194191, now seen corresponding path program 1 times [2025-03-16 19:56:15,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:15,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620844563] [2025-03-16 19:56:15,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:15,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:15,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:15,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:15,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:15,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:15,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:15,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620844563] [2025-03-16 19:56:15,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620844563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:15,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:15,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:15,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682557766] [2025-03-16 19:56:15,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:15,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:15,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:15,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:15,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:15,799 INFO L87 Difference]: Start difference. First operand 2692 states and 4871 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:16,405 INFO L93 Difference]: Finished difference Result 3610 states and 6360 transitions. [2025-03-16 19:56:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:16,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:16,420 INFO L225 Difference]: With dead ends: 3610 [2025-03-16 19:56:16,421 INFO L226 Difference]: Without dead ends: 3054 [2025-03-16 19:56:16,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:16,426 INFO L435 NwaCegarLoop]: 4559 mSDtfsCounter, 4822 mSDsluCounter, 13704 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 18263 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:16,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4839 Valid, 18263 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2025-03-16 19:56:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2955. [2025-03-16 19:56:16,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2874 states have (on average 1.7967988865692415) internal successors, (5164), 2878 states have internal predecessors, (5164), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (63), 60 states have call predecessors, (63), 59 states have call successors, (63) [2025-03-16 19:56:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 5286 transitions. [2025-03-16 19:56:16,520 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 5286 transitions. Word has length 131 [2025-03-16 19:56:16,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:16,521 INFO L471 AbstractCegarLoop]: Abstraction has 2955 states and 5286 transitions. [2025-03-16 19:56:16,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 5286 transitions. [2025-03-16 19:56:16,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:16,526 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:16,526 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] [2025-03-16 19:56:16,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:56:16,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:16,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:16,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1679091634, now seen corresponding path program 1 times [2025-03-16 19:56:16,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:16,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362590784] [2025-03-16 19:56:16,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:16,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:16,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:16,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:16,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:16,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:16,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362590784] [2025-03-16 19:56:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362590784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:16,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:16,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:16,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845790549] [2025-03-16 19:56:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:16,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:16,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:16,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:16,714 INFO L87 Difference]: Start difference. First operand 2955 states and 5286 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:17,602 INFO L93 Difference]: Finished difference Result 4448 states and 7702 transitions. [2025-03-16 19:56:17,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:17,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:17,616 INFO L225 Difference]: With dead ends: 4448 [2025-03-16 19:56:17,617 INFO L226 Difference]: Without dead ends: 3629 [2025-03-16 19:56:17,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:17,620 INFO L435 NwaCegarLoop]: 4555 mSDtfsCounter, 4817 mSDsluCounter, 13692 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 18247 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:17,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4834 Valid, 18247 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 19:56:17,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2025-03-16 19:56:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3516. [2025-03-16 19:56:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3383 states have (on average 1.767366242979604) internal successors, (5979), 3391 states have internal predecessors, (5979), 95 states have call successors, (95), 30 states have call predecessors, (95), 36 states have return successors, (111), 98 states have call predecessors, (111), 95 states have call successors, (111) [2025-03-16 19:56:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 6185 transitions. [2025-03-16 19:56:17,710 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 6185 transitions. Word has length 131 [2025-03-16 19:56:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:17,711 INFO L471 AbstractCegarLoop]: Abstraction has 3516 states and 6185 transitions. [2025-03-16 19:56:17,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 6185 transitions. [2025-03-16 19:56:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:17,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:17,713 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] [2025-03-16 19:56:17,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:56:17,713 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:17,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:17,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1534067375, now seen corresponding path program 1 times [2025-03-16 19:56:17,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:17,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705609700] [2025-03-16 19:56:17,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:17,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:17,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:17,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:17,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:17,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705609700] [2025-03-16 19:56:17,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705609700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:17,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:17,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:17,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705686389] [2025-03-16 19:56:17,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:17,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:17,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:17,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:17,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:17,826 INFO L87 Difference]: Start difference. First operand 3516 states and 6185 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:18,389 INFO L93 Difference]: Finished difference Result 6259 states and 10659 transitions. [2025-03-16 19:56:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:18,412 INFO L225 Difference]: With dead ends: 6259 [2025-03-16 19:56:18,413 INFO L226 Difference]: Without dead ends: 4879 [2025-03-16 19:56:18,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:18,422 INFO L435 NwaCegarLoop]: 4552 mSDtfsCounter, 4812 mSDsluCounter, 13683 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4829 SdHoareTripleChecker+Valid, 18235 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:18,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4829 Valid, 18235 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:56:18,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2025-03-16 19:56:18,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4737. [2025-03-16 19:56:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 4494 states have (on average 1.7327547841566533) internal successors, (7787), 4516 states have internal predecessors, (7787), 167 states have call successors, (167), 54 states have call predecessors, (167), 74 states have return successors, (231), 174 states have call predecessors, (231), 167 states have call successors, (231) [2025-03-16 19:56:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 8185 transitions. [2025-03-16 19:56:18,601 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 8185 transitions. Word has length 131 [2025-03-16 19:56:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:18,601 INFO L471 AbstractCegarLoop]: Abstraction has 4737 states and 8185 transitions. [2025-03-16 19:56:18,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 8185 transitions. [2025-03-16 19:56:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:18,606 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:18,606 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] [2025-03-16 19:56:18,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:56:18,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:18,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2053359662, now seen corresponding path program 1 times [2025-03-16 19:56:18,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:18,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988856027] [2025-03-16 19:56:18,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:18,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:18,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:18,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:18,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:18,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:18,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:18,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988856027] [2025-03-16 19:56:18,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988856027] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:18,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:18,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839232795] [2025-03-16 19:56:18,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:18,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:18,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:18,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:18,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:18,717 INFO L87 Difference]: Start difference. First operand 4737 states and 8185 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:19,325 INFO L93 Difference]: Finished difference Result 10258 states and 17369 transitions. [2025-03-16 19:56:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:19,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:19,356 INFO L225 Difference]: With dead ends: 10258 [2025-03-16 19:56:19,357 INFO L226 Difference]: Without dead ends: 7657 [2025-03-16 19:56:19,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:19,367 INFO L435 NwaCegarLoop]: 4549 mSDtfsCounter, 4807 mSDsluCounter, 13674 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4824 SdHoareTripleChecker+Valid, 18223 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:19,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4824 Valid, 18223 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2025-03-16 19:56:19,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 7458. [2025-03-16 19:56:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 6977 states have (on average 1.706034112082557) internal successors, (11903), 7045 states have internal predecessors, (11903), 311 states have call successors, (311), 102 states have call predecessors, (311), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2025-03-16 19:56:19,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 12781 transitions. [2025-03-16 19:56:19,613 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 12781 transitions. Word has length 131 [2025-03-16 19:56:19,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:19,613 INFO L471 AbstractCegarLoop]: Abstraction has 7458 states and 12781 transitions. [2025-03-16 19:56:19,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:19,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 12781 transitions. [2025-03-16 19:56:19,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:19,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:19,617 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] [2025-03-16 19:56:19,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:56:19,617 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:19,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:19,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1255024945, now seen corresponding path program 1 times [2025-03-16 19:56:19,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:19,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731601646] [2025-03-16 19:56:19,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:19,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:19,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:19,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:19,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731601646] [2025-03-16 19:56:19,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731601646] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:19,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073161141] [2025-03-16 19:56:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:19,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:19,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:19,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:19,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:19,728 INFO L87 Difference]: Start difference. First operand 7458 states and 12781 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:20,580 INFO L93 Difference]: Finished difference Result 19313 states and 33155 transitions. [2025-03-16 19:56:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:20,648 INFO L225 Difference]: With dead ends: 19313 [2025-03-16 19:56:20,649 INFO L226 Difference]: Without dead ends: 13991 [2025-03-16 19:56:20,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:20,694 INFO L435 NwaCegarLoop]: 4546 mSDtfsCounter, 4802 mSDsluCounter, 13665 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 18211 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:20,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 18211 Invalid, 873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:20,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2025-03-16 19:56:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 13683. [2025-03-16 19:56:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.699100378787879) internal successors, (21531), 12886 states have internal predecessors, (21531), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:56:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23753 transitions. [2025-03-16 19:56:21,164 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23753 transitions. Word has length 131 [2025-03-16 19:56:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:21,164 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23753 transitions. [2025-03-16 19:56:21,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23753 transitions. [2025-03-16 19:56:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:21,171 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:21,171 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] [2025-03-16 19:56:21,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:56:21,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:21,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1963388942, now seen corresponding path program 1 times [2025-03-16 19:56:21,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583561245] [2025-03-16 19:56:21,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:21,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:21,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:21,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:21,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:21,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:21,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583561245] [2025-03-16 19:56:21,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583561245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:21,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:21,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:21,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150596441] [2025-03-16 19:56:21,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:21,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:21,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:21,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:21,263 INFO L87 Difference]: Start difference. First operand 13683 states and 23753 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:21,855 INFO L93 Difference]: Finished difference Result 28660 states and 50738 transitions. [2025-03-16 19:56:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:21,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:21,912 INFO L225 Difference]: With dead ends: 28660 [2025-03-16 19:56:21,912 INFO L226 Difference]: Without dead ends: 17113 [2025-03-16 19:56:21,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:21,944 INFO L435 NwaCegarLoop]: 4295 mSDtfsCounter, 4564 mSDsluCounter, 8465 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 12760 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:21,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 12760 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17113 states. [2025-03-16 19:56:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17113 to 13683. [2025-03-16 19:56:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.6964962121212122) internal successors, (21498), 12886 states have internal predecessors, (21498), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:56:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23720 transitions. [2025-03-16 19:56:22,774 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23720 transitions. Word has length 131 [2025-03-16 19:56:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:22,774 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23720 transitions. [2025-03-16 19:56:22,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:22,775 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23720 transitions. [2025-03-16 19:56:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:22,782 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:22,782 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] [2025-03-16 19:56:22,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:56:22,783 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:22,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash -127546095, now seen corresponding path program 1 times [2025-03-16 19:56:22,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:22,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178363315] [2025-03-16 19:56:22,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:22,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:22,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:22,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:22,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:22,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:22,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178363315] [2025-03-16 19:56:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178363315] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944869206] [2025-03-16 19:56:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:22,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:22,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:22,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:22,877 INFO L87 Difference]: Start difference. First operand 13683 states and 23720 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:23,378 INFO L93 Difference]: Finished difference Result 28415 states and 50182 transitions. [2025-03-16 19:56:23,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:23,429 INFO L225 Difference]: With dead ends: 28415 [2025-03-16 19:56:23,430 INFO L226 Difference]: Without dead ends: 16868 [2025-03-16 19:56:23,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:23,456 INFO L435 NwaCegarLoop]: 4292 mSDtfsCounter, 4561 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 12752 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:23,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 12752 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2025-03-16 19:56:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13683. [2025-03-16 19:56:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.6938920454545454) internal successors, (21465), 12886 states have internal predecessors, (21465), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:56:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23687 transitions. [2025-03-16 19:56:23,933 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23687 transitions. Word has length 131 [2025-03-16 19:56:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:23,934 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23687 transitions. [2025-03-16 19:56:23,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23687 transitions. [2025-03-16 19:56:23,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:23,940 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:23,940 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] [2025-03-16 19:56:23,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:56:23,940 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:23,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -68325358, now seen corresponding path program 1 times [2025-03-16 19:56:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:23,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575896864] [2025-03-16 19:56:23,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:23,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:23,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:23,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:23,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:23,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575896864] [2025-03-16 19:56:24,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575896864] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:24,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:24,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:24,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509323614] [2025-03-16 19:56:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:24,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:24,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:24,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:24,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:24,056 INFO L87 Difference]: Start difference. First operand 13683 states and 23687 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:25,196 INFO L93 Difference]: Finished difference Result 41402 states and 73032 transitions. [2025-03-16 19:56:25,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:25,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:25,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:25,298 INFO L225 Difference]: With dead ends: 41402 [2025-03-16 19:56:25,298 INFO L226 Difference]: Without dead ends: 29855 [2025-03-16 19:56:25,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:25,331 INFO L435 NwaCegarLoop]: 4527 mSDtfsCounter, 5032 mSDsluCounter, 13607 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5059 SdHoareTripleChecker+Valid, 18134 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:25,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5059 Valid, 18134 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:25,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29855 states. [2025-03-16 19:56:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29855 to 27495. [2025-03-16 19:56:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27495 states, 25294 states have (on average 1.7002846524867556) internal successors, (43007), 25962 states have internal predecessors, (43007), 1143 states have call successors, (1143), 390 states have call predecessors, (1143), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-16 19:56:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27495 states to 27495 states and 49389 transitions. [2025-03-16 19:56:26,497 INFO L78 Accepts]: Start accepts. Automaton has 27495 states and 49389 transitions. Word has length 131 [2025-03-16 19:56:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:26,497 INFO L471 AbstractCegarLoop]: Abstraction has 27495 states and 49389 transitions. [2025-03-16 19:56:26,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 27495 states and 49389 transitions. [2025-03-16 19:56:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:26,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:26,510 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] [2025-03-16 19:56:26,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:56:26,510 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:26,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:26,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1062461267, now seen corresponding path program 1 times [2025-03-16 19:56:26,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:26,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303786804] [2025-03-16 19:56:26,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:26,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:26,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:26,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:26,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:26,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:26,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:26,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303786804] [2025-03-16 19:56:26,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303786804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:26,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:26,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273856998] [2025-03-16 19:56:26,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:26,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:26,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:26,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:26,624 INFO L87 Difference]: Start difference. First operand 27495 states and 49389 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:27,673 INFO L93 Difference]: Finished difference Result 60164 states and 111448 transitions. [2025-03-16 19:56:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:27,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:27,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:27,903 INFO L225 Difference]: With dead ends: 60164 [2025-03-16 19:56:27,904 INFO L226 Difference]: Without dead ends: 34805 [2025-03-16 19:56:27,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:27,940 INFO L435 NwaCegarLoop]: 4285 mSDtfsCounter, 4554 mSDsluCounter, 8445 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4571 SdHoareTripleChecker+Valid, 12730 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:27,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4571 Valid, 12730 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34805 states. [2025-03-16 19:56:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34805 to 27495. [2025-03-16 19:56:28,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27495 states, 25294 states have (on average 1.697714873092433) internal successors, (42942), 25962 states have internal predecessors, (42942), 1143 states have call successors, (1143), 390 states have call predecessors, (1143), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-16 19:56:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27495 states to 27495 states and 49324 transitions. [2025-03-16 19:56:28,959 INFO L78 Accepts]: Start accepts. Automaton has 27495 states and 49324 transitions. Word has length 131 [2025-03-16 19:56:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:28,965 INFO L471 AbstractCegarLoop]: Abstraction has 27495 states and 49324 transitions. [2025-03-16 19:56:28,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 27495 states and 49324 transitions. [2025-03-16 19:56:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:28,981 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:28,981 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] [2025-03-16 19:56:28,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:56:28,981 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:28,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash 129106930, now seen corresponding path program 1 times [2025-03-16 19:56:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:28,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033648241] [2025-03-16 19:56:28,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:28,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:29,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:29,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:29,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:29,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033648241] [2025-03-16 19:56:29,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033648241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:29,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:29,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:29,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322719012] [2025-03-16 19:56:29,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:29,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:29,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:29,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:29,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:29,148 INFO L87 Difference]: Start difference. First operand 27495 states and 49324 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:31,274 INFO L93 Difference]: Finished difference Result 88032 states and 164633 transitions. [2025-03-16 19:56:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:31,535 INFO L225 Difference]: With dead ends: 88032 [2025-03-16 19:56:31,535 INFO L226 Difference]: Without dead ends: 62673 [2025-03-16 19:56:31,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:31,615 INFO L435 NwaCegarLoop]: 4519 mSDtfsCounter, 4965 mSDsluCounter, 13584 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4992 SdHoareTripleChecker+Valid, 18103 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:31,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4992 Valid, 18103 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62673 states. [2025-03-16 19:56:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62673 to 58911. [2025-03-16 19:56:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7110401663078179) internal successors, (92184), 55938 states have internal predecessors, (92184), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 19:56:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112966 transitions. [2025-03-16 19:56:33,910 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112966 transitions. Word has length 131 [2025-03-16 19:56:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:33,910 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112966 transitions. [2025-03-16 19:56:33,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:33,911 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112966 transitions. [2025-03-16 19:56:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:33,947 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:33,948 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] [2025-03-16 19:56:33,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:56:33,948 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:33,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:33,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1623019379, now seen corresponding path program 1 times [2025-03-16 19:56:33,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:33,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221728391] [2025-03-16 19:56:33,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:33,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:33,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:33,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:33,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:33,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:34,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:34,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221728391] [2025-03-16 19:56:34,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221728391] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:34,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:34,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:34,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227666948] [2025-03-16 19:56:34,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:34,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:34,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:34,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:34,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:34,037 INFO L87 Difference]: Start difference. First operand 58911 states and 112966 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:37,252 INFO L93 Difference]: Finished difference Result 133198 states and 267048 transitions. [2025-03-16 19:56:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:37,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:37,706 INFO L225 Difference]: With dead ends: 133198 [2025-03-16 19:56:37,706 INFO L226 Difference]: Without dead ends: 76423 [2025-03-16 19:56:37,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:37,792 INFO L435 NwaCegarLoop]: 4280 mSDtfsCounter, 4550 mSDsluCounter, 8436 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 12716 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:37,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4567 Valid, 12716 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76423 states. [2025-03-16 19:56:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76423 to 58911. [2025-03-16 19:56:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7086457791966738) internal successors, (92055), 55938 states have internal predecessors, (92055), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 19:56:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112837 transitions. [2025-03-16 19:56:40,757 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112837 transitions. Word has length 131 [2025-03-16 19:56:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:40,758 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112837 transitions. [2025-03-16 19:56:40,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112837 transitions. [2025-03-16 19:56:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:40,774 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:40,774 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] [2025-03-16 19:56:40,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:56:40,774 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:40,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash 424284114, now seen corresponding path program 1 times [2025-03-16 19:56:40,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:40,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443265654] [2025-03-16 19:56:40,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:40,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:40,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:40,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:40,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:40,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:40,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:40,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443265654] [2025-03-16 19:56:40,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443265654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:40,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:40,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:40,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753355679] [2025-03-16 19:56:40,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:40,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:40,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:40,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:40,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:40,848 INFO L87 Difference]: Start difference. First operand 58911 states and 112837 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:43,825 INFO L93 Difference]: Finished difference Result 131009 states and 262412 transitions. [2025-03-16 19:56:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:43,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:44,116 INFO L225 Difference]: With dead ends: 131009 [2025-03-16 19:56:44,116 INFO L226 Difference]: Without dead ends: 74234 [2025-03-16 19:56:44,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:44,263 INFO L435 NwaCegarLoop]: 4277 mSDtfsCounter, 4547 mSDsluCounter, 8431 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 12708 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:44,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 12708 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74234 states. [2025-03-16 19:56:47,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74234 to 58911. [2025-03-16 19:56:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7062513920855298) internal successors, (91926), 55938 states have internal predecessors, (91926), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 19:56:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112708 transitions. [2025-03-16 19:56:48,087 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112708 transitions. Word has length 131 [2025-03-16 19:56:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:48,087 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112708 transitions. [2025-03-16 19:56:48,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112708 transitions. [2025-03-16 19:56:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 19:56:48,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:48,103 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] [2025-03-16 19:56:48,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:56:48,103 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:48,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:48,103 INFO L85 PathProgramCache]: Analyzing trace with hash 939804563, now seen corresponding path program 1 times [2025-03-16 19:56:48,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:48,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531664541] [2025-03-16 19:56:48,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:48,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:48,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 19:56:48,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 19:56:48,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:48,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:56:48,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:48,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531664541] [2025-03-16 19:56:48,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531664541] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:48,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:48,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:48,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422486594] [2025-03-16 19:56:48,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:48,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:48,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:48,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:48,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:48,188 INFO L87 Difference]: Start difference. First operand 58911 states and 112708 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:52,545 INFO L93 Difference]: Finished difference Result 189664 states and 389723 transitions. [2025-03-16 19:56:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:52,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 131 [2025-03-16 19:56:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:53,169 INFO L225 Difference]: With dead ends: 189664 [2025-03-16 19:56:53,169 INFO L226 Difference]: Without dead ends: 132889 [2025-03-16 19:56:53,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:56:53,372 INFO L435 NwaCegarLoop]: 4506 mSDtfsCounter, 4782 mSDsluCounter, 13547 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4798 SdHoareTripleChecker+Valid, 18053 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:53,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4798 Valid, 18053 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:56:53,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132889 states.