./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.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_label42+token_ring.09.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 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:57:40,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:57:40,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:57:40,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:57:40,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:57:40,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:57:40,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:57:40,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:57:40,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:57:40,753 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:57:40,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:57:40,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:57:40,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:57:40,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:57:40,754 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:57:40,755 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:57:40,755 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:57:40,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:57:40,756 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:57:40,756 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:57:40,756 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:57:40,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:57:40,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:57:40,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:57:40,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:57:40,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:57:40,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:57:40,757 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 -> 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad [2025-03-16 19:57:40,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:57:40,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:57:40,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:57:40,956 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:57:40,956 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:57:40,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2025-03-16 19:57:42,064 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c9da324/cb43665bb89c4750bdbee437c13069ce/FLAGb08043141 [2025-03-16 19:57:42,698 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:57:42,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2025-03-16 19:57:42,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c9da324/cb43665bb89c4750bdbee437c13069ce/FLAGb08043141 [2025-03-16 19:57:43,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c9da324/cb43665bb89c4750bdbee437c13069ce [2025-03-16 19:57:43,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:57:43,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:57:43,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:57:43,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:57:43,147 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:57:43,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:57:43" (1/1) ... [2025-03-16 19:57:43,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df969d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:43, skipping insertion in model container [2025-03-16 19:57:43,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:57:43" (1/1) ... [2025-03-16 19:57:43,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:57:44,353 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_label42+token_ring.09.cil-2.c[378560,378573] [2025-03-16 19:57:44,383 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_label42+token_ring.09.cil-2.c[383339,383352] [2025-03-16 19:57:44,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:57:44,589 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:57:45,074 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_label42+token_ring.09.cil-2.c[378560,378573] [2025-03-16 19:57:45,079 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_label42+token_ring.09.cil-2.c[383339,383352] [2025-03-16 19:57:45,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:57:45,144 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:57:45,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45 WrapperNode [2025-03-16 19:57:45,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:57:45,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:57:45,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:57:45,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:57:45,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,508 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13020 [2025-03-16 19:57:45,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:57:45,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:57:45,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:57:45,509 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:57:45,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,555 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,636 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 19:57:45,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,774 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,791 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:57:45,865 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:57:45,865 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:57:45,865 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:57:45,866 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (1/1) ... [2025-03-16 19:57:45,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:57:45,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:57:45,962 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 19:57:45,968 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 19:57:45,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-16 19:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:57:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:57:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:57:46,063 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:57:46,065 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:57:52,271 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:57:52,272 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:57:52,273 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:57:52,273 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:57:52,273 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:57:52,273 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:57:52,275 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:57:52,624 INFO L? ?]: Removed 1729 outVars from TransFormulas that were not future-live. [2025-03-16 19:57:52,624 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:57:52,700 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:57:52,700 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:57:52,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:57:52 BoogieIcfgContainer [2025-03-16 19:57:52,704 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:57:52,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:57:52,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:57:52,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:57:52,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:57:43" (1/3) ... [2025-03-16 19:57:52,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e53789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:57:52, skipping insertion in model container [2025-03-16 19:57:52,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:57:45" (2/3) ... [2025-03-16 19:57:52,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e53789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:57:52, skipping insertion in model container [2025-03-16 19:57:52,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:57:52" (3/3) ... [2025-03-16 19:57:52,712 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.09.cil-2.c [2025-03-16 19:57:52,726 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:57:52,728 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.09.cil-2.c that has 8 procedures, 2421 locations, 1 initial locations, 13 loop locations, and 2 error locations. [2025-03-16 19:57:52,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:57:52,903 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;@1412b48b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:57:52,903 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:57:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 2421 states, 2387 states have (on average 1.8684541265186427) internal successors, (4460), 2391 states have internal predecessors, (4460), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-16 19:57:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:57:52,947 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:52,947 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] [2025-03-16 19:57:52,948 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:52,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2045722081, now seen corresponding path program 1 times [2025-03-16 19:57:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:52,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325017182] [2025-03-16 19:57:52,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:52,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:53,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:57:53,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:57:53,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:53,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:53,408 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 19:57:53,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:53,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325017182] [2025-03-16 19:57:53,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325017182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:53,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:53,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:53,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027704194] [2025-03-16 19:57:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:53,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:53,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:53,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:53,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:53,441 INFO L87 Difference]: Start difference. First operand has 2421 states, 2387 states have (on average 1.8684541265186427) internal successors, (4460), 2391 states have internal predecessors, (4460), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:54,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:54,054 INFO L93 Difference]: Finished difference Result 5143 states and 9525 transitions. [2025-03-16 19:57:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:57:54,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:57:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:54,077 INFO L225 Difference]: With dead ends: 5143 [2025-03-16 19:57:54,077 INFO L226 Difference]: Without dead ends: 2729 [2025-03-16 19:57:54,088 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 19:57:54,092 INFO L435 NwaCegarLoop]: 4336 mSDtfsCounter, 4841 mSDsluCounter, 8875 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4858 SdHoareTripleChecker+Valid, 13211 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:54,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4858 Valid, 13211 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:57:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2025-03-16 19:57:54,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2704. [2025-03-16 19:57:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 2646 states have (on average 1.81708238851096) internal successors, (4808), 2650 states have internal predecessors, (4808), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2025-03-16 19:57:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 4893 transitions. [2025-03-16 19:57:54,232 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 4893 transitions. Word has length 132 [2025-03-16 19:57:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:54,233 INFO L471 AbstractCegarLoop]: Abstraction has 2704 states and 4893 transitions. [2025-03-16 19:57:54,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:54,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 4893 transitions. [2025-03-16 19:57:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:57:54,238 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:54,238 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] [2025-03-16 19:57:54,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:57:54,240 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:54,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1762981729, now seen corresponding path program 1 times [2025-03-16 19:57:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266927279] [2025-03-16 19:57:54,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:54,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:57:54,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:57:54,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:54,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:54,472 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 19:57:54,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:54,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266927279] [2025-03-16 19:57:54,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266927279] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:54,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:54,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:54,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794846696] [2025-03-16 19:57:54,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:54,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:54,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:54,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:54,474 INFO L87 Difference]: Start difference. First operand 2704 states and 4893 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:55,152 INFO L93 Difference]: Finished difference Result 3641 states and 6416 transitions. [2025-03-16 19:57:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:55,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:57:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:55,164 INFO L225 Difference]: With dead ends: 3641 [2025-03-16 19:57:55,164 INFO L226 Difference]: Without dead ends: 3073 [2025-03-16 19:57:55,166 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 19:57:55,167 INFO L435 NwaCegarLoop]: 4581 mSDtfsCounter, 4835 mSDsluCounter, 13769 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4852 SdHoareTripleChecker+Valid, 18350 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:55,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4852 Valid, 18350 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:57:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2025-03-16 19:57:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2972. [2025-03-16 19:57:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2889 states have (on average 1.7978539286950501) internal successors, (5194), 2894 states have internal predecessors, (5194), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (63), 60 states have call predecessors, (63), 59 states have call successors, (63) [2025-03-16 19:57:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 5318 transitions. [2025-03-16 19:57:55,247 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 5318 transitions. Word has length 132 [2025-03-16 19:57:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:55,249 INFO L471 AbstractCegarLoop]: Abstraction has 2972 states and 5318 transitions. [2025-03-16 19:57:55,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 5318 transitions. [2025-03-16 19:57:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:57:55,254 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:55,254 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] [2025-03-16 19:57:55,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:57:55,254 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:55,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1527303554, now seen corresponding path program 1 times [2025-03-16 19:57:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:55,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177054243] [2025-03-16 19:57:55,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:55,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:55,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:57:55,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:57:55,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:55,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:55,403 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 19:57:55,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:55,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177054243] [2025-03-16 19:57:55,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177054243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:55,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:55,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:55,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999631912] [2025-03-16 19:57:55,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:55,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:55,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:55,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:55,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:55,406 INFO L87 Difference]: Start difference. First operand 2972 states and 5318 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:55,991 INFO L93 Difference]: Finished difference Result 4494 states and 7788 transitions. [2025-03-16 19:57:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:55,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:57:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:56,005 INFO L225 Difference]: With dead ends: 4494 [2025-03-16 19:57:56,006 INFO L226 Difference]: Without dead ends: 3658 [2025-03-16 19:57:56,010 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 19:57:56,012 INFO L435 NwaCegarLoop]: 4577 mSDtfsCounter, 4830 mSDsluCounter, 13757 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4847 SdHoareTripleChecker+Valid, 18334 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:56,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4847 Valid, 18334 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:57:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3658 states. [2025-03-16 19:57:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3658 to 3543. [2025-03-16 19:57:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3408 states have (on average 1.7690727699530517) internal successors, (6029), 3417 states have internal predecessors, (6029), 97 states have call successors, (97), 31 states have call predecessors, (97), 36 states have return successors, (111), 98 states have call predecessors, (111), 95 states have call successors, (111) [2025-03-16 19:57:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 6237 transitions. [2025-03-16 19:57:56,107 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 6237 transitions. Word has length 132 [2025-03-16 19:57:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:56,107 INFO L471 AbstractCegarLoop]: Abstraction has 3543 states and 6237 transitions. [2025-03-16 19:57:56,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 6237 transitions. [2025-03-16 19:57:56,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:57:56,110 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:56,111 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] [2025-03-16 19:57:56,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:57:56,111 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:56,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:56,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1943982271, now seen corresponding path program 1 times [2025-03-16 19:57:56,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:56,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350947685] [2025-03-16 19:57:56,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:56,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:56,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:57:56,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:57:56,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:56,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:56,260 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 19:57:56,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:56,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350947685] [2025-03-16 19:57:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350947685] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:56,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:56,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:56,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869713228] [2025-03-16 19:57:56,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:56,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:56,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:56,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:56,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:56,263 INFO L87 Difference]: Start difference. First operand 3543 states and 6237 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:57,047 INFO L93 Difference]: Finished difference Result 6335 states and 10805 transitions. [2025-03-16 19:57:57,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:57:57,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:57,071 INFO L225 Difference]: With dead ends: 6335 [2025-03-16 19:57:57,072 INFO L226 Difference]: Without dead ends: 4928 [2025-03-16 19:57:57,078 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 19:57:57,078 INFO L435 NwaCegarLoop]: 4574 mSDtfsCounter, 4825 mSDsluCounter, 13748 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 18322 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:57,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4842 Valid, 18322 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:57:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2025-03-16 19:57:57,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4784. [2025-03-16 19:57:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 4539 states have (on average 1.7354042740691782) internal successors, (7877), 4562 states have internal predecessors, (7877), 169 states have call successors, (169), 55 states have call predecessors, (169), 74 states have return successors, (231), 174 states have call predecessors, (231), 167 states have call successors, (231) [2025-03-16 19:57:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 8277 transitions. [2025-03-16 19:57:57,224 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 8277 transitions. Word has length 132 [2025-03-16 19:57:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:57,225 INFO L471 AbstractCegarLoop]: Abstraction has 4784 states and 8277 transitions. [2025-03-16 19:57:57,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 8277 transitions. [2025-03-16 19:57:57,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:57:57,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:57,228 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] [2025-03-16 19:57:57,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:57:57,228 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:57,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1269176738, now seen corresponding path program 1 times [2025-03-16 19:57:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450805367] [2025-03-16 19:57:57,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:57,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:57:57,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:57:57,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:57,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:57,346 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 19:57:57,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:57,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450805367] [2025-03-16 19:57:57,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450805367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:57,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:57,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:57,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177256609] [2025-03-16 19:57:57,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:57,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:57,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:57,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:57,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:57,348 INFO L87 Difference]: Start difference. First operand 4784 states and 8277 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:58,053 INFO L93 Difference]: Finished difference Result 10394 states and 17635 transitions. [2025-03-16 19:57:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:57:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:58,091 INFO L225 Difference]: With dead ends: 10394 [2025-03-16 19:57:58,091 INFO L226 Difference]: Without dead ends: 7746 [2025-03-16 19:57:58,105 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 19:57:58,105 INFO L435 NwaCegarLoop]: 4571 mSDtfsCounter, 4820 mSDsluCounter, 13739 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4837 SdHoareTripleChecker+Valid, 18310 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:58,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4837 Valid, 18310 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:57:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7746 states. [2025-03-16 19:57:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7746 to 7545. [2025-03-16 19:57:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7545 states, 7062 states have (on average 1.7095723591050693) internal successors, (12073), 7131 states have internal predecessors, (12073), 313 states have call successors, (313), 103 states have call predecessors, (313), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2025-03-16 19:57:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7545 states to 7545 states and 12953 transitions. [2025-03-16 19:57:58,412 INFO L78 Accepts]: Start accepts. Automaton has 7545 states and 12953 transitions. Word has length 132 [2025-03-16 19:57:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:58,413 INFO L471 AbstractCegarLoop]: Abstraction has 7545 states and 12953 transitions. [2025-03-16 19:57:58,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7545 states and 12953 transitions. [2025-03-16 19:57:58,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:57:58,419 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:58,420 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] [2025-03-16 19:57:58,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:57:58,420 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:58,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1788469025, now seen corresponding path program 1 times [2025-03-16 19:57:58,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:58,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328113742] [2025-03-16 19:57:58,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:58,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:58,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:57:58,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:57:58,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:58,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:58,558 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 19:57:58,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:58,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328113742] [2025-03-16 19:57:58,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328113742] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:58,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:58,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:57:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166758665] [2025-03-16 19:57:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:58,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:57:58,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:58,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:57:58,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:57:58,560 INFO L87 Difference]: Start difference. First operand 7545 states and 12953 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:59,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:57:59,296 INFO L93 Difference]: Finished difference Result 19569 states and 33661 transitions. [2025-03-16 19:57:59,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:57:59,297 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:57:59,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:57:59,347 INFO L225 Difference]: With dead ends: 19569 [2025-03-16 19:57:59,347 INFO L226 Difference]: Without dead ends: 14160 [2025-03-16 19:57:59,363 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 19:57:59,364 INFO L435 NwaCegarLoop]: 4568 mSDtfsCounter, 4815 mSDsluCounter, 13730 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4832 SdHoareTripleChecker+Valid, 18298 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:57:59,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4832 Valid, 18298 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:57:59,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14160 states. [2025-03-16 19:57:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14160 to 13850. [2025-03-16 19:57:59,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13850 states, 12837 states have (on average 1.7029679831736386) internal successors, (21861), 13052 states have internal predecessors, (21861), 601 states have call successors, (601), 199 states have call predecessors, (601), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:57:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13850 states to 13850 states and 24085 transitions. [2025-03-16 19:57:59,703 INFO L78 Accepts]: Start accepts. Automaton has 13850 states and 24085 transitions. Word has length 132 [2025-03-16 19:57:59,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:57:59,704 INFO L471 AbstractCegarLoop]: Abstraction has 13850 states and 24085 transitions. [2025-03-16 19:57:59,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:57:59,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13850 states and 24085 transitions. [2025-03-16 19:57:59,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:57:59,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:57:59,713 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:57:59,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:57:59,713 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:57:59,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:57:59,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1519915582, now seen corresponding path program 1 times [2025-03-16 19:57:59,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:57:59,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823354523] [2025-03-16 19:57:59,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:57:59,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:57:59,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:57:59,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:57:59,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:57:59,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:57:59,892 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 19:57:59,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:57:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823354523] [2025-03-16 19:57:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823354523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:57:59,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:57:59,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:57:59,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963317887] [2025-03-16 19:57:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:57:59,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:57:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:57:59,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:57:59,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:57:59,897 INFO L87 Difference]: Start difference. First operand 13850 states and 24085 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:00,548 INFO L93 Difference]: Finished difference Result 28994 states and 51402 transitions. [2025-03-16 19:58:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:00,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:58:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:00,603 INFO L225 Difference]: With dead ends: 28994 [2025-03-16 19:58:00,603 INFO L226 Difference]: Without dead ends: 17280 [2025-03-16 19:58:00,636 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 19:58:00,636 INFO L435 NwaCegarLoop]: 4306 mSDtfsCounter, 4577 mSDsluCounter, 8483 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 12789 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:00,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 12789 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:58:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17280 states. [2025-03-16 19:58:01,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17280 to 13850. [2025-03-16 19:58:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13850 states, 12837 states have (on average 1.700397289086235) internal successors, (21828), 13052 states have internal predecessors, (21828), 601 states have call successors, (601), 199 states have call predecessors, (601), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:58:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13850 states to 13850 states and 24052 transitions. [2025-03-16 19:58:01,101 INFO L78 Accepts]: Start accepts. Automaton has 13850 states and 24052 transitions. Word has length 132 [2025-03-16 19:58:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:01,101 INFO L471 AbstractCegarLoop]: Abstraction has 13850 states and 24052 transitions. [2025-03-16 19:58:01,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 13850 states and 24052 transitions. [2025-03-16 19:58:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:58:01,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:01,108 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] [2025-03-16 19:58:01,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:58:01,108 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:01,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1698498305, now seen corresponding path program 1 times [2025-03-16 19:58:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319381357] [2025-03-16 19:58:01,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:01,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:58:01,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:58:01,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:01,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:01,286 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 19:58:01,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:01,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319381357] [2025-03-16 19:58:01,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319381357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:01,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:01,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:01,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605837502] [2025-03-16 19:58:01,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:01,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:01,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:01,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:01,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:01,290 INFO L87 Difference]: Start difference. First operand 13850 states and 24052 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:01,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:01,989 INFO L93 Difference]: Finished difference Result 28749 states and 50846 transitions. [2025-03-16 19:58:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:01,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:58:01,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:02,056 INFO L225 Difference]: With dead ends: 28749 [2025-03-16 19:58:02,057 INFO L226 Difference]: Without dead ends: 17035 [2025-03-16 19:58:02,093 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 19:58:02,095 INFO L435 NwaCegarLoop]: 4303 mSDtfsCounter, 4574 mSDsluCounter, 8478 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4591 SdHoareTripleChecker+Valid, 12781 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:02,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4591 Valid, 12781 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:58:02,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17035 states. [2025-03-16 19:58:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17035 to 13850. [2025-03-16 19:58:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13850 states, 12837 states have (on average 1.6978265949988316) internal successors, (21795), 13052 states have internal predecessors, (21795), 601 states have call successors, (601), 199 states have call predecessors, (601), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 19:58:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13850 states to 13850 states and 24019 transitions. [2025-03-16 19:58:02,694 INFO L78 Accepts]: Start accepts. Automaton has 13850 states and 24019 transitions. Word has length 132 [2025-03-16 19:58:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:02,695 INFO L471 AbstractCegarLoop]: Abstraction has 13850 states and 24019 transitions. [2025-03-16 19:58:02,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 13850 states and 24019 transitions. [2025-03-16 19:58:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:58:02,701 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:02,701 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] [2025-03-16 19:58:02,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:58:02,702 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:02,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash 137344542, now seen corresponding path program 1 times [2025-03-16 19:58:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:02,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012467020] [2025-03-16 19:58:02,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:02,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:58:02,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:58:02,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:02,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:02,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:02,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:02,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012467020] [2025-03-16 19:58:02,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012467020] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:02,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:02,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:02,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663854868] [2025-03-16 19:58:02,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:02,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:02,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:02,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:02,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:02,825 INFO L87 Difference]: Start difference. First operand 13850 states and 24019 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:03,877 INFO L93 Difference]: Finished difference Result 41898 states and 74018 transitions. [2025-03-16 19:58:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:03,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:58:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:03,969 INFO L225 Difference]: With dead ends: 41898 [2025-03-16 19:58:03,970 INFO L226 Difference]: Without dead ends: 30184 [2025-03-16 19:58:03,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:03,998 INFO L435 NwaCegarLoop]: 4549 mSDtfsCounter, 5045 mSDsluCounter, 13672 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5072 SdHoareTripleChecker+Valid, 18221 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:03,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5072 Valid, 18221 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:58:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30184 states. [2025-03-16 19:58:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30184 to 27822. [2025-03-16 19:58:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27822 states, 25619 states have (on average 1.7040868105702798) internal successors, (43657), 26288 states have internal predecessors, (43657), 1145 states have call successors, (1145), 391 states have call predecessors, (1145), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-16 19:58:04,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27822 states to 27822 states and 50041 transitions. [2025-03-16 19:58:04,795 INFO L78 Accepts]: Start accepts. Automaton has 27822 states and 50041 transitions. Word has length 132 [2025-03-16 19:58:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:04,795 INFO L471 AbstractCegarLoop]: Abstraction has 27822 states and 50041 transitions. [2025-03-16 19:58:04,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 27822 states and 50041 transitions. [2025-03-16 19:58:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:58:04,805 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:04,805 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] [2025-03-16 19:58:04,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:58:04,805 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:04,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash 831991549, now seen corresponding path program 1 times [2025-03-16 19:58:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:04,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472266944] [2025-03-16 19:58:04,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:04,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:58:04,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:58:04,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:04,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:04,893 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 19:58:04,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472266944] [2025-03-16 19:58:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472266944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:04,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786492568] [2025-03-16 19:58:04,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:04,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:04,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:04,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:04,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:04,895 INFO L87 Difference]: Start difference. First operand 27822 states and 50041 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:06,255 INFO L93 Difference]: Finished difference Result 60818 states and 112752 transitions. [2025-03-16 19:58:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:06,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:58:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:06,401 INFO L225 Difference]: With dead ends: 60818 [2025-03-16 19:58:06,401 INFO L226 Difference]: Without dead ends: 35132 [2025-03-16 19:58:06,481 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 19:58:06,482 INFO L435 NwaCegarLoop]: 4296 mSDtfsCounter, 4567 mSDsluCounter, 8463 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4584 SdHoareTripleChecker+Valid, 12759 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:06,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4584 Valid, 12759 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:58:06,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35132 states. [2025-03-16 19:58:08,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35132 to 27822. [2025-03-16 19:58:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27822 states, 25619 states have (on average 1.7015496311331433) internal successors, (43592), 26288 states have internal predecessors, (43592), 1145 states have call successors, (1145), 391 states have call predecessors, (1145), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-16 19:58:08,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27822 states to 27822 states and 49976 transitions. [2025-03-16 19:58:08,198 INFO L78 Accepts]: Start accepts. Automaton has 27822 states and 49976 transitions. Word has length 132 [2025-03-16 19:58:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:08,199 INFO L471 AbstractCegarLoop]: Abstraction has 27822 states and 49976 transitions. [2025-03-16 19:58:08,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 27822 states and 49976 transitions. [2025-03-16 19:58:08,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:58:08,208 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:08,208 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] [2025-03-16 19:58:08,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:58:08,209 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:08,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1962778174, now seen corresponding path program 1 times [2025-03-16 19:58:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:08,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110340701] [2025-03-16 19:58:08,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:08,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:58:08,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:58:08,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:08,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:08,307 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 19:58:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110340701] [2025-03-16 19:58:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110340701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:08,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:08,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272739761] [2025-03-16 19:58:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:08,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:08,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:08,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:08,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:08,309 INFO L87 Difference]: Start difference. First operand 27822 states and 49976 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:10,238 INFO L93 Difference]: Finished difference Result 89008 states and 166579 transitions. [2025-03-16 19:58:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:10,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:58:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:10,488 INFO L225 Difference]: With dead ends: 89008 [2025-03-16 19:58:10,488 INFO L226 Difference]: Without dead ends: 63322 [2025-03-16 19:58:10,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:10,563 INFO L435 NwaCegarLoop]: 4541 mSDtfsCounter, 4978 mSDsluCounter, 13649 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5005 SdHoareTripleChecker+Valid, 18190 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:10,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5005 Valid, 18190 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:58:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63322 states. [2025-03-16 19:58:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63322 to 59558. [2025-03-16 19:58:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59558 states, 54521 states have (on average 1.7144586489609508) internal successors, (93474), 56584 states have internal predecessors, (93474), 2201 states have call successors, (2201), 775 states have call predecessors, (2201), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 19:58:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59558 states to 59558 states and 114258 transitions. [2025-03-16 19:58:13,645 INFO L78 Accepts]: Start accepts. Automaton has 59558 states and 114258 transitions. Word has length 132 [2025-03-16 19:58:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:13,646 INFO L471 AbstractCegarLoop]: Abstraction has 59558 states and 114258 transitions. [2025-03-16 19:58:13,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 59558 states and 114258 transitions. [2025-03-16 19:58:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:58:13,661 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:13,661 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] [2025-03-16 19:58:13,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:58:13,661 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:13,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1029423837, now seen corresponding path program 1 times [2025-03-16 19:58:13,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:13,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467329284] [2025-03-16 19:58:13,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:13,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:13,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:58:13,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:58:13,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:13,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:13,735 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 19:58:13,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:13,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467329284] [2025-03-16 19:58:13,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467329284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:13,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:13,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:13,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301881027] [2025-03-16 19:58:13,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:13,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:13,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:13,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:13,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:13,738 INFO L87 Difference]: Start difference. First operand 59558 states and 114258 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:16,694 INFO L93 Difference]: Finished difference Result 134492 states and 269632 transitions. [2025-03-16 19:58:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:16,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:58:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:16,962 INFO L225 Difference]: With dead ends: 134492 [2025-03-16 19:58:16,962 INFO L226 Difference]: Without dead ends: 77070 [2025-03-16 19:58:17,059 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 19:58:17,060 INFO L435 NwaCegarLoop]: 4291 mSDtfsCounter, 4563 mSDsluCounter, 8454 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 12745 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:17,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 12745 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:58:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77070 states. [2025-03-16 19:58:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77070 to 59558. [2025-03-16 19:58:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59558 states, 54521 states have (on average 1.7120925881770328) internal successors, (93345), 56584 states have internal predecessors, (93345), 2201 states have call successors, (2201), 775 states have call predecessors, (2201), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 19:58:21,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59558 states to 59558 states and 114129 transitions. [2025-03-16 19:58:21,728 INFO L78 Accepts]: Start accepts. Automaton has 59558 states and 114129 transitions. Word has length 132 [2025-03-16 19:58:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:21,728 INFO L471 AbstractCegarLoop]: Abstraction has 59558 states and 114129 transitions. [2025-03-16 19:58:21,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 59558 states and 114129 transitions. [2025-03-16 19:58:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:58:21,744 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:21,744 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] [2025-03-16 19:58:21,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:58:21,744 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:21,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1771631010, now seen corresponding path program 1 times [2025-03-16 19:58:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:21,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783920936] [2025-03-16 19:58:21,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:21,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:21,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:58:21,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:58:21,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:21,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:21,820 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 19:58:21,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:21,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783920936] [2025-03-16 19:58:21,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783920936] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:21,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:21,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:21,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103056186] [2025-03-16 19:58:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:21,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:21,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:21,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:21,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:21,821 INFO L87 Difference]: Start difference. First operand 59558 states and 114129 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:24,429 INFO L93 Difference]: Finished difference Result 132303 states and 264996 transitions. [2025-03-16 19:58:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:24,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:58:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:24,733 INFO L225 Difference]: With dead ends: 132303 [2025-03-16 19:58:24,733 INFO L226 Difference]: Without dead ends: 74881 [2025-03-16 19:58:24,872 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 19:58:24,873 INFO L435 NwaCegarLoop]: 4288 mSDtfsCounter, 4560 mSDsluCounter, 8449 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 12737 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:24,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4577 Valid, 12737 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:58:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74881 states. [2025-03-16 19:58:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74881 to 59558. [2025-03-16 19:58:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59558 states, 54521 states have (on average 1.7097265273931146) internal successors, (93216), 56584 states have internal predecessors, (93216), 2201 states have call successors, (2201), 775 states have call predecessors, (2201), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 19:58:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59558 states to 59558 states and 114000 transitions. [2025-03-16 19:58:28,629 INFO L78 Accepts]: Start accepts. Automaton has 59558 states and 114000 transitions. Word has length 132 [2025-03-16 19:58:28,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:28,630 INFO L471 AbstractCegarLoop]: Abstraction has 59558 states and 114000 transitions. [2025-03-16 19:58:28,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:28,630 INFO L276 IsEmpty]: Start isEmpty. Operand 59558 states and 114000 transitions. [2025-03-16 19:58:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 19:58:28,647 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:28,647 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] [2025-03-16 19:58:28,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:58:28,648 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:28,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1324601021, now seen corresponding path program 1 times [2025-03-16 19:58:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846362416] [2025-03-16 19:58:28,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:28,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 19:58:28,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 19:58:28,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:28,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:28,748 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 19:58:28,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846362416] [2025-03-16 19:58:28,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846362416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:28,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:28,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:28,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026713396] [2025-03-16 19:58:28,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:28,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:28,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:28,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:28,750 INFO L87 Difference]: Start difference. First operand 59558 states and 114000 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:33,060 INFO L93 Difference]: Finished difference Result 191600 states and 393589 transitions. [2025-03-16 19:58:33,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:33,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 132 [2025-03-16 19:58:33,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:33,670 INFO L225 Difference]: With dead ends: 191600 [2025-03-16 19:58:33,670 INFO L226 Difference]: Without dead ends: 134178 [2025-03-16 19:58:33,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:33,880 INFO L435 NwaCegarLoop]: 4528 mSDtfsCounter, 4795 mSDsluCounter, 13612 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 18140 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:33,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4811 Valid, 18140 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:58:33,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134178 states.