./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87df5a94129a3baa1e2e3650ee6bffcda9607641da2006311f5769f81726e25d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:59:40,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:59:40,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:59:40,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:59:40,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:59:40,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:59:40,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:59:40,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:59:40,380 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:59:40,380 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:59:40,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:59:40,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:59:40,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:59:40,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:59:40,380 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:59:40,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:59:40,381 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:59:40,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:59:40,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:59:40,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:59:40,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:59:40,383 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 -> 87df5a94129a3baa1e2e3650ee6bffcda9607641da2006311f5769f81726e25d [2025-03-16 19:59:40,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:59:40,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:59:40,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:59:40,676 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:59:40,676 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:59:40,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c [2025-03-16 19:59:41,810 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2be028a26/c3294b72e1594530a006f3bebdaa8338/FLAGcd3a6ebe1 [2025-03-16 19:59:42,414 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:59:42,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c [2025-03-16 19:59:42,467 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2be028a26/c3294b72e1594530a006f3bebdaa8338/FLAGcd3a6ebe1 [2025-03-16 19:59:42,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2be028a26/c3294b72e1594530a006f3bebdaa8338 [2025-03-16 19:59:42,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:59:42,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:59:42,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:59:42,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:59:42,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:59:42,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:59:42" (1/1) ... [2025-03-16 19:59:42,891 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154be36a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:42, skipping insertion in model container [2025-03-16 19:59:42,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:59:42" (1/1) ... [2025-03-16 19:59:43,024 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:59:44,114 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_label43+token_ring.10.cil-2.c[381679,381692] [2025-03-16 19:59:44,140 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_label43+token_ring.10.cil-2.c[383339,383352] [2025-03-16 19:59:44,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:59:44,341 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:59:44,869 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_label43+token_ring.10.cil-2.c[381679,381692] [2025-03-16 19:59:44,876 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_label43+token_ring.10.cil-2.c[383339,383352] [2025-03-16 19:59:44,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:59:44,960 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:59:44,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44 WrapperNode [2025-03-16 19:59:44,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:59:44,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:59:44,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:59:44,963 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:59:44,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,347 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13071 [2025-03-16 19:59:45,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:59:45,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:59:45,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:59:45,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:59:45,355 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,391 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,490 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 19:59:45,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,624 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:59:45,711 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:59:45,711 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:59:45,711 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:59:45,712 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (1/1) ... [2025-03-16 19:59:45,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:59:45,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:59:45,736 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 19:59:45,741 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 19:59:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:59:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:59:45,756 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:59:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:59:45,756 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:59:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:59:45,756 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:59:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:59:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:59:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:59:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:59:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:59:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:59:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:59:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:59:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:59:45,891 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:59:45,895 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:59:52,026 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:59:52,027 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:59:52,027 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:59:52,027 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:59:52,028 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:59:52,028 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:59:52,028 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:59:52,291 INFO L? ?]: Removed 1730 outVars from TransFormulas that were not future-live. [2025-03-16 19:59:52,292 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:59:52,347 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:59:52,347 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:59:52,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:59:52 BoogieIcfgContainer [2025-03-16 19:59:52,349 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:59:52,351 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:59:52,351 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:59:52,355 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:59:52,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:59:42" (1/3) ... [2025-03-16 19:59:52,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a986e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:59:52, skipping insertion in model container [2025-03-16 19:59:52,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:59:44" (2/3) ... [2025-03-16 19:59:52,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a986e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:59:52, skipping insertion in model container [2025-03-16 19:59:52,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:59:52" (3/3) ... [2025-03-16 19:59:52,358 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.10.cil-2.c [2025-03-16 19:59:52,369 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:59:52,372 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.10.cil-2.c that has 7 procedures, 2436 locations, 1 initial locations, 14 loop locations, and 2 error locations. [2025-03-16 19:59:52,461 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:59:52,470 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;@4e8faff1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:59:52,470 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:59:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 2436 states, 2404 states have (on average 1.8668885191347753) internal successors, (4488), 2406 states have internal predecessors, (4488), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-16 19:59:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:52,497 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:52,498 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:52,498 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:52,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1422575049, now seen corresponding path program 1 times [2025-03-16 19:59:52,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:52,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44289592] [2025-03-16 19:59:52,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:52,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:52,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:52,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:52,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:52,802 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 19:59:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:52,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44289592] [2025-03-16 19:59:52,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44289592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:52,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:52,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:59:52,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144069893] [2025-03-16 19:59:52,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:52,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:59:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:52,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:59:52,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:59:52,830 INFO L87 Difference]: Start difference. First operand has 2436 states, 2404 states have (on average 1.8668885191347753) internal successors, (4488), 2406 states have internal predecessors, (4488), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:52,980 INFO L93 Difference]: Finished difference Result 4869 states and 9064 transitions. [2025-03-16 19:59:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:59:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2025-03-16 19:59:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:53,007 INFO L225 Difference]: With dead ends: 4869 [2025-03-16 19:59:53,007 INFO L226 Difference]: Without dead ends: 2431 [2025-03-16 19:59:53,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:59:53,017 INFO L435 NwaCegarLoop]: 4460 mSDtfsCounter, 495 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 8421 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:53,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 8421 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:59:53,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2025-03-16 19:59:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2431. [2025-03-16 19:59:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2399 states have (on average 1.8361817423926636) internal successors, (4405), 2401 states have internal predecessors, (4405), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-16 19:59:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4453 transitions. [2025-03-16 19:59:53,124 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4453 transitions. Word has length 141 [2025-03-16 19:59:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:53,125 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4453 transitions. [2025-03-16 19:59:53,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4453 transitions. [2025-03-16 19:59:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:53,177 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:53,178 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:53,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:59:53,178 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:53,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1533628824, now seen corresponding path program 1 times [2025-03-16 19:59:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:53,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447392805] [2025-03-16 19:59:53,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:53,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:53,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:53,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:53,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:53,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:53,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:53,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447392805] [2025-03-16 19:59:53,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447392805] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:53,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:53,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:59:53,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553325666] [2025-03-16 19:59:53,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:53,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:59:53,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:53,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:59:53,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:59:53,300 INFO L87 Difference]: Start difference. First operand 2431 states and 4453 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:53,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:53,344 INFO L93 Difference]: Finished difference Result 2728 states and 4925 transitions. [2025-03-16 19:59:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:59:53,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2025-03-16 19:59:53,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:53,353 INFO L225 Difference]: With dead ends: 2728 [2025-03-16 19:59:53,353 INFO L226 Difference]: Without dead ends: 2431 [2025-03-16 19:59:53,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:59:53,355 INFO L435 NwaCegarLoop]: 4451 mSDtfsCounter, 482 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 8408 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:53,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 8408 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:59:53,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2025-03-16 19:59:53,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2431. [2025-03-16 19:59:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2399 states have (on average 1.8357649020425177) internal successors, (4404), 2401 states have internal predecessors, (4404), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-16 19:59:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4452 transitions. [2025-03-16 19:59:53,405 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4452 transitions. Word has length 141 [2025-03-16 19:59:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:53,405 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4452 transitions. [2025-03-16 19:59:53,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:53,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4452 transitions. [2025-03-16 19:59:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:53,410 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:53,411 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:53,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:59:53,411 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:53,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1748457977, now seen corresponding path program 1 times [2025-03-16 19:59:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:53,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616041443] [2025-03-16 19:59:53,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:53,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:53,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:53,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:53,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:53,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:53,552 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 19:59:53,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:53,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616041443] [2025-03-16 19:59:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616041443] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:53,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575358985] [2025-03-16 19:59:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:53,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:53,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:53,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:53,553 INFO L87 Difference]: Start difference. First operand 2431 states and 4452 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 19:59:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:54,075 INFO L93 Difference]: Finished difference Result 3060 states and 5469 transitions. [2025-03-16 19:59:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:59:54,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 141 [2025-03-16 19:59:54,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:54,085 INFO L225 Difference]: With dead ends: 3060 [2025-03-16 19:59:54,085 INFO L226 Difference]: Without dead ends: 2766 [2025-03-16 19:59:54,087 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 19:59:54,087 INFO L435 NwaCegarLoop]: 4347 mSDtfsCounter, 4901 mSDsluCounter, 8906 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4919 SdHoareTripleChecker+Valid, 13253 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:54,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4919 Valid, 13253 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:59:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2025-03-16 19:59:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2741. [2025-03-16 19:59:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2683 states have (on average 1.8128960119269475) internal successors, (4864), 2686 states have internal predecessors, (4864), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2025-03-16 19:59:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4951 transitions. [2025-03-16 19:59:54,143 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4951 transitions. Word has length 141 [2025-03-16 19:59:54,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:54,143 INFO L471 AbstractCegarLoop]: Abstraction has 2741 states and 4951 transitions. [2025-03-16 19:59:54,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 19:59:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4951 transitions. [2025-03-16 19:59:54,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:54,144 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:54,144 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:54,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:59:54,145 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:54,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1424230120, now seen corresponding path program 1 times [2025-03-16 19:59:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778946616] [2025-03-16 19:59:54,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:54,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:54,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:54,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:54,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:54,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:54,325 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 19:59:54,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:54,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778946616] [2025-03-16 19:59:54,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778946616] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:54,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:54,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:54,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386142531] [2025-03-16 19:59:54,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:54,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:54,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:54,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:54,329 INFO L87 Difference]: Start difference. First operand 2741 states and 4951 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:54,817 INFO L93 Difference]: Finished difference Result 3411 states and 6047 transitions. [2025-03-16 19:59:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:59:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:59:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:54,830 INFO L225 Difference]: With dead ends: 3411 [2025-03-16 19:59:54,830 INFO L226 Difference]: Without dead ends: 2807 [2025-03-16 19:59:54,833 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 19:59:54,835 INFO L435 NwaCegarLoop]: 4337 mSDtfsCounter, 4625 mSDsluCounter, 8539 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4643 SdHoareTripleChecker+Valid, 12876 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:54,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4643 Valid, 12876 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:59:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2025-03-16 19:59:54,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2741. [2025-03-16 19:59:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2683 states have (on average 1.812150577711517) internal successors, (4862), 2686 states have internal predecessors, (4862), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2025-03-16 19:59:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4949 transitions. [2025-03-16 19:59:54,915 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4949 transitions. Word has length 141 [2025-03-16 19:59:54,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:54,915 INFO L471 AbstractCegarLoop]: Abstraction has 2741 states and 4949 transitions. [2025-03-16 19:59:54,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:54,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4949 transitions. [2025-03-16 19:59:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:54,917 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:54,917 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:54,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:59:54,917 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:54,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:54,918 INFO L85 PathProgramCache]: Analyzing trace with hash 967277081, now seen corresponding path program 1 times [2025-03-16 19:59:54,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:54,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498517212] [2025-03-16 19:59:54,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:54,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:54,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:54,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:54,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:54,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:55,083 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 19:59:55,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:55,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498517212] [2025-03-16 19:59:55,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498517212] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:55,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:55,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:55,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731688710] [2025-03-16 19:59:55,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:55,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:55,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:55,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:55,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:55,085 INFO L87 Difference]: Start difference. First operand 2741 states and 4949 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:55,737 INFO L93 Difference]: Finished difference Result 3740 states and 6572 transitions. [2025-03-16 19:59:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:55,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:59:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:55,751 INFO L225 Difference]: With dead ends: 3740 [2025-03-16 19:59:55,752 INFO L226 Difference]: Without dead ends: 3136 [2025-03-16 19:59:55,755 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 19:59:55,756 INFO L435 NwaCegarLoop]: 4611 mSDtfsCounter, 4899 mSDsluCounter, 13868 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4917 SdHoareTripleChecker+Valid, 18479 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:55,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4917 Valid, 18479 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2025-03-16 19:59:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 3027. [2025-03-16 19:59:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3027 states, 2943 states have (on average 1.7917091403329934) internal successors, (5273), 2947 states have internal predecessors, (5273), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (66), 63 states have call predecessors, (66), 62 states have call successors, (66) [2025-03-16 19:59:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 5401 transitions. [2025-03-16 19:59:55,822 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 5401 transitions. Word has length 141 [2025-03-16 19:59:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:55,822 INFO L471 AbstractCegarLoop]: Abstraction has 3027 states and 5401 transitions. [2025-03-16 19:59:55,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 5401 transitions. [2025-03-16 19:59:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:55,824 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:55,824 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:55,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:59:55,825 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:55,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1726524168, now seen corresponding path program 1 times [2025-03-16 19:59:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:55,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350036101] [2025-03-16 19:59:55,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:55,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:55,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:55,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:55,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:55,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:55,971 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 19:59:55,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:55,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350036101] [2025-03-16 19:59:55,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350036101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:55,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:55,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:55,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266983818] [2025-03-16 19:59:55,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:55,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:55,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:55,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:55,973 INFO L87 Difference]: Start difference. First operand 3027 states and 5401 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:56,603 INFO L93 Difference]: Finished difference Result 4653 states and 8037 transitions. [2025-03-16 19:59:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:56,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:59:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:56,617 INFO L225 Difference]: With dead ends: 4653 [2025-03-16 19:59:56,617 INFO L226 Difference]: Without dead ends: 3763 [2025-03-16 19:59:56,621 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 19:59:56,621 INFO L435 NwaCegarLoop]: 4607 mSDtfsCounter, 4894 mSDsluCounter, 13856 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 18463 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:56,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4912 Valid, 18463 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2025-03-16 19:59:56,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3638. [2025-03-16 19:59:56,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3500 states have (on average 1.7617142857142858) internal successors, (6166), 3508 states have internal predecessors, (6166), 100 states have call successors, (100), 30 states have call predecessors, (100), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2025-03-16 19:59:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 6382 transitions. [2025-03-16 19:59:56,710 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 6382 transitions. Word has length 141 [2025-03-16 19:59:56,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:56,710 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 6382 transitions. [2025-03-16 19:59:56,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 6382 transitions. [2025-03-16 19:59:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:56,712 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:56,712 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:56,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:59:56,712 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:56,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1927356985, now seen corresponding path program 1 times [2025-03-16 19:59:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:56,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768616805] [2025-03-16 19:59:56,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:56,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:56,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:56,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:56,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:56,834 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 19:59:56,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:56,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768616805] [2025-03-16 19:59:56,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768616805] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:56,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:56,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:56,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815597631] [2025-03-16 19:59:56,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:56,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:56,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:56,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:56,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:56,835 INFO L87 Difference]: Start difference. First operand 3638 states and 6382 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:57,478 INFO L93 Difference]: Finished difference Result 6630 states and 11272 transitions. [2025-03-16 19:59:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:57,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:59:57,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:57,494 INFO L225 Difference]: With dead ends: 6630 [2025-03-16 19:59:57,494 INFO L226 Difference]: Without dead ends: 5129 [2025-03-16 19:59:57,497 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 19:59:57,497 INFO L435 NwaCegarLoop]: 4604 mSDtfsCounter, 4889 mSDsluCounter, 13847 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4907 SdHoareTripleChecker+Valid, 18451 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:57,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4907 Valid, 18451 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:57,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2025-03-16 19:59:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 4971. [2025-03-16 19:59:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4971 states, 4719 states have (on average 1.7279084551811825) internal successors, (8154), 4741 states have internal predecessors, (8154), 176 states have call successors, (176), 54 states have call predecessors, (176), 74 states have return successors, (240), 183 states have call predecessors, (240), 176 states have call successors, (240) [2025-03-16 19:59:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4971 states to 4971 states and 8570 transitions. [2025-03-16 19:59:57,640 INFO L78 Accepts]: Start accepts. Automaton has 4971 states and 8570 transitions. Word has length 141 [2025-03-16 19:59:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:57,641 INFO L471 AbstractCegarLoop]: Abstraction has 4971 states and 8570 transitions. [2025-03-16 19:59:57,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4971 states and 8570 transitions. [2025-03-16 19:59:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:57,643 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:57,643 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:57,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:59:57,644 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:57,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1141364520, now seen corresponding path program 1 times [2025-03-16 19:59:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:57,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978127949] [2025-03-16 19:59:57,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:57,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:57,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:57,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:57,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:57,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:57,752 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 19:59:57,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:57,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978127949] [2025-03-16 19:59:57,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978127949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:57,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:57,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:57,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493291625] [2025-03-16 19:59:57,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:57,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:57,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:57,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:57,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:57,753 INFO L87 Difference]: Start difference. First operand 4971 states and 8570 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:58,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:58,521 INFO L93 Difference]: Finished difference Result 11009 states and 18634 transitions. [2025-03-16 19:59:58,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:58,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:59:58,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:58,583 INFO L225 Difference]: With dead ends: 11009 [2025-03-16 19:59:58,585 INFO L226 Difference]: Without dead ends: 8175 [2025-03-16 19:59:58,603 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 19:59:58,607 INFO L435 NwaCegarLoop]: 4601 mSDtfsCounter, 4884 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4902 SdHoareTripleChecker+Valid, 18439 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:58,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4902 Valid, 18439 Invalid, 936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2025-03-16 19:59:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 7952. [2025-03-16 19:59:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7952 states, 7454 states have (on average 1.7040515159645828) internal successors, (12702), 7522 states have internal predecessors, (12702), 328 states have call successors, (328), 102 states have call predecessors, (328), 168 states have return successors, (584), 343 states have call predecessors, (584), 328 states have call successors, (584) [2025-03-16 19:59:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7952 states to 7952 states and 13614 transitions. [2025-03-16 19:59:58,935 INFO L78 Accepts]: Start accepts. Automaton has 7952 states and 13614 transitions. Word has length 141 [2025-03-16 19:59:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:58,936 INFO L471 AbstractCegarLoop]: Abstraction has 7952 states and 13614 transitions. [2025-03-16 19:59:58,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7952 states and 13614 transitions. [2025-03-16 19:59:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:59:58,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:58,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:58,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:59:58,940 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:58,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 145117785, now seen corresponding path program 1 times [2025-03-16 19:59:58,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:58,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328760724] [2025-03-16 19:59:58,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:58,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:58,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:59:58,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:59:58,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:58,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:59,050 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 19:59:59,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:59,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328760724] [2025-03-16 19:59:59,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328760724] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:59,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:59,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:59,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330038152] [2025-03-16 19:59:59,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:59,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:59,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:59,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:59,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:59,052 INFO L87 Difference]: Start difference. First operand 7952 states and 13614 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:59:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:59,804 INFO L93 Difference]: Finished difference Result 20968 states and 36012 transitions. [2025-03-16 19:59:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:59:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:59,852 INFO L225 Difference]: With dead ends: 20968 [2025-03-16 19:59:59,852 INFO L226 Difference]: Without dead ends: 15153 [2025-03-16 19:59:59,871 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 19:59:59,875 INFO L435 NwaCegarLoop]: 4598 mSDtfsCounter, 4879 mSDsluCounter, 13829 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4897 SdHoareTripleChecker+Valid, 18427 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:59,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4897 Valid, 18427 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:59,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2025-03-16 20:00:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 14805. [2025-03-16 20:00:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14805 states, 13761 states have (on average 1.7011845069399025) internal successors, (23410), 13975 states have internal predecessors, (23410), 632 states have call successors, (632), 198 states have call predecessors, (632), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2025-03-16 20:00:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25698 transitions. [2025-03-16 20:00:00,536 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25698 transitions. Word has length 141 [2025-03-16 20:00:00,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:00,536 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25698 transitions. [2025-03-16 20:00:00,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:00,537 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25698 transitions. [2025-03-16 20:00:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:00:00,553 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:00,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:00,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:00:00,554 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:00,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2126279864, now seen corresponding path program 1 times [2025-03-16 20:00:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247520147] [2025-03-16 20:00:00,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:00,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:00:00,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:00:00,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:00,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:00,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:00,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247520147] [2025-03-16 20:00:00,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247520147] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:00,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:00,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:00,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438995455] [2025-03-16 20:00:00,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:00,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:00,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:00,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:00,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:00,789 INFO L87 Difference]: Start difference. First operand 14805 states and 25698 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:01,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:01,463 INFO L93 Difference]: Finished difference Result 31393 states and 55608 transitions. [2025-03-16 20:00:01,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:01,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 20:00:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:01,520 INFO L225 Difference]: With dead ends: 31393 [2025-03-16 20:00:01,520 INFO L226 Difference]: Without dead ends: 18725 [2025-03-16 20:00:01,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:01,549 INFO L435 NwaCegarLoop]: 4324 mSDtfsCounter, 4617 mSDsluCounter, 8514 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 12838 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:01,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 12838 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:00:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18725 states. [2025-03-16 20:00:02,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18725 to 14805. [2025-03-16 20:00:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14805 states, 13761 states have (on average 1.6987864254051304) internal successors, (23377), 13975 states have internal predecessors, (23377), 632 states have call successors, (632), 198 states have call predecessors, (632), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2025-03-16 20:00:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25665 transitions. [2025-03-16 20:00:02,092 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25665 transitions. Word has length 141 [2025-03-16 20:00:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:02,092 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25665 transitions. [2025-03-16 20:00:02,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25665 transitions. [2025-03-16 20:00:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:00:02,099 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:02,099 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:02,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:00:02,100 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:02,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:02,100 INFO L85 PathProgramCache]: Analyzing trace with hash 943262329, now seen corresponding path program 1 times [2025-03-16 20:00:02,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:02,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954012970] [2025-03-16 20:00:02,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:02,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:02,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:00:02,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:00:02,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:02,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:02,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:02,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954012970] [2025-03-16 20:00:02,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954012970] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:02,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:02,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:02,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683829117] [2025-03-16 20:00:02,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:02,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:02,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:02,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:02,195 INFO L87 Difference]: Start difference. First operand 14805 states and 25665 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:03,038 INFO L93 Difference]: Finished difference Result 31148 states and 55052 transitions. [2025-03-16 20:00:03,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:03,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 20:00:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:03,158 INFO L225 Difference]: With dead ends: 31148 [2025-03-16 20:00:03,158 INFO L226 Difference]: Without dead ends: 18480 [2025-03-16 20:00:03,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:03,191 INFO L435 NwaCegarLoop]: 4292 mSDtfsCounter, 4641 mSDsluCounter, 8480 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 12772 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:03,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4659 Valid, 12772 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:03,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18480 states. [2025-03-16 20:00:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18480 to 14805. [2025-03-16 20:00:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14805 states, 13761 states have (on average 1.6963883438703582) internal successors, (23344), 13975 states have internal predecessors, (23344), 632 states have call successors, (632), 198 states have call predecessors, (632), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2025-03-16 20:00:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25632 transitions. [2025-03-16 20:00:03,806 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25632 transitions. Word has length 141 [2025-03-16 20:00:03,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:03,807 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25632 transitions. [2025-03-16 20:00:03,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25632 transitions. [2025-03-16 20:00:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:00:03,813 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:03,813 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:03,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:00:03,813 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:03,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash -203278184, now seen corresponding path program 1 times [2025-03-16 20:00:03,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:03,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453640637] [2025-03-16 20:00:03,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:03,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:03,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:00:03,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:00:03,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:03,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:03,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:03,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453640637] [2025-03-16 20:00:03,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453640637] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:03,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:03,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:03,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790489264] [2025-03-16 20:00:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:03,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:03,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:03,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:03,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:03,932 INFO L87 Difference]: Start difference. First operand 14805 states and 25632 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:05,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:05,392 INFO L93 Difference]: Finished difference Result 43719 states and 77484 transitions. [2025-03-16 20:00:05,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:05,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 20:00:05,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:05,534 INFO L225 Difference]: With dead ends: 43719 [2025-03-16 20:00:05,534 INFO L226 Difference]: Without dead ends: 31051 [2025-03-16 20:00:05,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:05,581 INFO L435 NwaCegarLoop]: 4585 mSDtfsCounter, 4858 mSDsluCounter, 13792 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4876 SdHoareTripleChecker+Valid, 18377 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:05,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4876 Valid, 18377 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:00:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31051 states. [2025-03-16 20:00:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31051 to 30536. [2025-03-16 20:00:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30536 states, 28238 states have (on average 1.7084779375309866) internal successors, (48244), 28906 states have internal predecessors, (48244), 1240 states have call successors, (1240), 390 states have call predecessors, (1240), 1056 states have return successors, (5336), 1303 states have call predecessors, (5336), 1240 states have call successors, (5336) [2025-03-16 20:00:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30536 states to 30536 states and 54820 transitions. [2025-03-16 20:00:06,698 INFO L78 Accepts]: Start accepts. Automaton has 30536 states and 54820 transitions. Word has length 141 [2025-03-16 20:00:06,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:06,698 INFO L471 AbstractCegarLoop]: Abstraction has 30536 states and 54820 transitions. [2025-03-16 20:00:06,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 30536 states and 54820 transitions. [2025-03-16 20:00:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:00:06,709 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:06,709 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:06,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:00:06,709 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:06,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:06,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1487189351, now seen corresponding path program 1 times [2025-03-16 20:00:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:06,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103936090] [2025-03-16 20:00:06,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:06,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:06,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:00:06,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:00:06,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:06,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:06,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:06,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103936090] [2025-03-16 20:00:06,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103936090] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:06,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:06,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:06,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120852912] [2025-03-16 20:00:06,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:06,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:06,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:06,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:06,804 INFO L87 Difference]: Start difference. First operand 30536 states and 54820 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:08,055 INFO L93 Difference]: Finished difference Result 68438 states and 126696 transitions. [2025-03-16 20:00:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:08,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 20:00:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:08,213 INFO L225 Difference]: With dead ends: 68438 [2025-03-16 20:00:08,213 INFO L226 Difference]: Without dead ends: 40039 [2025-03-16 20:00:08,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:08,280 INFO L435 NwaCegarLoop]: 4316 mSDtfsCounter, 4610 mSDsluCounter, 8500 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4628 SdHoareTripleChecker+Valid, 12816 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:08,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4628 Valid, 12816 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:00:08,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40039 states. [2025-03-16 20:00:09,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40039 to 30536. [2025-03-16 20:00:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30536 states, 28238 states have (on average 1.7061760747928323) internal successors, (48179), 28906 states have internal predecessors, (48179), 1240 states have call successors, (1240), 390 states have call predecessors, (1240), 1056 states have return successors, (5336), 1303 states have call predecessors, (5336), 1240 states have call successors, (5336) [2025-03-16 20:00:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30536 states to 30536 states and 54755 transitions. [2025-03-16 20:00:09,851 INFO L78 Accepts]: Start accepts. Automaton has 30536 states and 54755 transitions. Word has length 141 [2025-03-16 20:00:09,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:09,852 INFO L471 AbstractCegarLoop]: Abstraction has 30536 states and 54755 transitions. [2025-03-16 20:00:09,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:09,852 INFO L276 IsEmpty]: Start isEmpty. Operand 30536 states and 54755 transitions. [2025-03-16 20:00:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:00:09,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:09,863 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:09,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:00:09,863 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:09,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1251511176, now seen corresponding path program 1 times [2025-03-16 20:00:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151213549] [2025-03-16 20:00:09,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:09,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:00:09,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:00:09,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:09,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:09,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151213549] [2025-03-16 20:00:09,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151213549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:09,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:09,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:09,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724791049] [2025-03-16 20:00:09,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:09,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:09,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:09,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:09,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:09,983 INFO L87 Difference]: Start difference. First operand 30536 states and 54755 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:12,688 INFO L93 Difference]: Finished difference Result 100668 states and 187484 transitions. [2025-03-16 20:00:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 20:00:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:13,009 INFO L225 Difference]: With dead ends: 100668 [2025-03-16 20:00:13,009 INFO L226 Difference]: Without dead ends: 72269 [2025-03-16 20:00:13,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:13,108 INFO L435 NwaCegarLoop]: 4575 mSDtfsCounter, 5126 mSDsluCounter, 13758 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 18333 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:13,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5155 Valid, 18333 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:00:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72269 states. [2025-03-16 20:00:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72269 to 67152. [2025-03-16 20:00:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67152 states, 61924 states have (on average 1.7277469155739293) internal successors, (106989), 63986 states have internal predecessors, (106989), 2392 states have call successors, (2392), 774 states have call predecessors, (2392), 2834 states have return successors, (18776), 2519 states have call predecessors, (18776), 2392 states have call successors, (18776) [2025-03-16 20:00:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67152 states to 67152 states and 128157 transitions. [2025-03-16 20:00:16,280 INFO L78 Accepts]: Start accepts. Automaton has 67152 states and 128157 transitions. Word has length 141 [2025-03-16 20:00:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:16,280 INFO L471 AbstractCegarLoop]: Abstraction has 67152 states and 128157 transitions. [2025-03-16 20:00:16,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 67152 states and 128157 transitions. [2025-03-16 20:00:16,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:00:16,301 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:16,302 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:16,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 20:00:16,302 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:16,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:16,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2075192647, now seen corresponding path program 1 times [2025-03-16 20:00:16,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:16,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906073151] [2025-03-16 20:00:16,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:16,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:16,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:00:16,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:00:16,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:16,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:16,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:16,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906073151] [2025-03-16 20:00:16,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906073151] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:16,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:16,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490915414] [2025-03-16 20:00:16,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:16,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:16,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:16,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:16,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:16,392 INFO L87 Difference]: Start difference. First operand 67152 states and 128157 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 20:00:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:19,988 INFO L93 Difference]: Finished difference Result 156246 states and 310564 transitions. [2025-03-16 20:00:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:19,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 20:00:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:20,452 INFO L225 Difference]: With dead ends: 156246 [2025-03-16 20:00:20,452 INFO L226 Difference]: Without dead ends: 91231 [2025-03-16 20:00:20,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:20,661 INFO L435 NwaCegarLoop]: 4311 mSDtfsCounter, 4604 mSDsluCounter, 8489 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 12800 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:20,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 12800 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:00:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91231 states.