./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.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 546425dfb0e9d0673715f309b3c99445cd7a29ebb128e47cf94e5f13217a2c6c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 06:54:04,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 06:54:04,466 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 06:54:04,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 06:54:04,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 06:54:04,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 06:54:04,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 06:54:04,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 06:54:04,492 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 06:54:04,492 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 06:54:04,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 06:54:04,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 06:54:04,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 06:54:04,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 06:54:04,493 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 06:54:04,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 06:54:04,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 06:54:04,493 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 06:54:04,493 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 06:54:04,494 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 06:54:04,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:54:04,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 06:54:04,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 06:54:04,496 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 -> 546425dfb0e9d0673715f309b3c99445cd7a29ebb128e47cf94e5f13217a2c6c [2025-03-08 06:54:04,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 06:54:04,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 06:54:04,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 06:54:04,706 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 06:54:04,706 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 06:54:04,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c [2025-03-08 06:54:05,898 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51cc3c328/162d2efad8614bc09e9da198fead055d/FLAGc7c9ce9a4 [2025-03-08 06:54:06,481 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 06:54:06,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.04.cil-2.c [2025-03-08 06:54:06,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51cc3c328/162d2efad8614bc09e9da198fead055d/FLAGc7c9ce9a4 [2025-03-08 06:54:06,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51cc3c328/162d2efad8614bc09e9da198fead055d [2025-03-08 06:54:06,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 06:54:06,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 06:54:06,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 06:54:06,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 06:54:06,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 06:54:06,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:54:06" (1/1) ... [2025-03-08 06:54:06,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1781c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:06, skipping insertion in model container [2025-03-08 06:54:06,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 06:54:06" (1/1) ... [2025-03-08 06:54:07,109 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 06:54:08,268 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_label45+token_ring.04.cil-2.c[380323,380336] [2025-03-08 06:54:08,298 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_label45+token_ring.04.cil-2.c[383339,383352] [2025-03-08 06:54:08,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:54:08,470 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 06:54:08,987 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_label45+token_ring.04.cil-2.c[380323,380336] [2025-03-08 06:54:08,991 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_label45+token_ring.04.cil-2.c[383339,383352] [2025-03-08 06:54:08,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 06:54:09,041 INFO L204 MainTranslator]: Completed translation [2025-03-08 06:54:09,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09 WrapperNode [2025-03-08 06:54:09,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 06:54:09,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 06:54:09,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 06:54:09,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 06:54:09,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,481 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12735 [2025-03-08 06:54:09,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 06:54:09,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 06:54:09,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 06:54:09,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 06:54:09,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,599 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 06:54:09,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,781 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 06:54:09,860 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 06:54:09,860 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 06:54:09,860 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 06:54:09,861 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (1/1) ... [2025-03-08 06:54:09,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 06:54:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:54:09,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 06:54:09,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 06:54:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 06:54:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-08 06:54:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-08 06:54:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-08 06:54:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-08 06:54:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-08 06:54:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-08 06:54:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-08 06:54:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-08 06:54:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-08 06:54:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-08 06:54:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-08 06:54:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-08 06:54:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-08 06:54:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-08 06:54:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 06:54:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 06:54:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 06:54:09,999 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 06:54:10,001 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 06:54:16,146 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-08 06:54:16,147 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-08 06:54:16,148 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-08 06:54:16,148 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-08 06:54:16,148 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-08 06:54:16,148 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-08 06:54:16,149 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-08 06:54:16,451 INFO L? ?]: Removed 1711 outVars from TransFormulas that were not future-live. [2025-03-08 06:54:16,451 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 06:54:16,532 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 06:54:16,533 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 06:54:16,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:54:16 BoogieIcfgContainer [2025-03-08 06:54:16,533 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 06:54:16,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 06:54:16,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 06:54:16,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 06:54:16,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 06:54:06" (1/3) ... [2025-03-08 06:54:16,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c0ee80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:54:16, skipping insertion in model container [2025-03-08 06:54:16,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 06:54:09" (2/3) ... [2025-03-08 06:54:16,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c0ee80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 06:54:16, skipping insertion in model container [2025-03-08 06:54:16,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 06:54:16" (3/3) ... [2025-03-08 06:54:16,549 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.04.cil-2.c [2025-03-08 06:54:16,571 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 06:54:16,578 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label45+token_ring.04.cil-2.c that has 8 procedures, 2371 locations, 1 initial locations, 8 loop locations, and 2 error locations. [2025-03-08 06:54:16,689 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 06:54:16,706 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;@e6475bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 06:54:16,709 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-08 06:54:16,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 2371 states, 2342 states have (on average 1.8509820666097352) internal successors, (4335), 2346 states have internal predecessors, (4335), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 06:54:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:16,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:16,758 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] [2025-03-08 06:54:16,760 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:16,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash -169168035, now seen corresponding path program 1 times [2025-03-08 06:54:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:16,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536695074] [2025-03-08 06:54:16,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:16,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:16,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:16,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:16,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:16,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:17,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:17,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536695074] [2025-03-08 06:54:17,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536695074] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:17,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:17,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:54:17,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076326895] [2025-03-08 06:54:17,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:17,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:54:17,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:17,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:54:17,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:54:17,225 INFO L87 Difference]: Start difference. First operand has 2371 states, 2342 states have (on average 1.8509820666097352) internal successors, (4335), 2346 states have internal predecessors, (4335), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:17,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:17,727 INFO L93 Difference]: Finished difference Result 4918 states and 9035 transitions. [2025-03-08 06:54:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 06:54:17,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:17,753 INFO L225 Difference]: With dead ends: 4918 [2025-03-08 06:54:17,754 INFO L226 Difference]: Without dead ends: 2489 [2025-03-08 06:54:17,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:17,764 INFO L435 NwaCegarLoop]: 4243 mSDtfsCounter, 4508 mSDsluCounter, 8592 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4520 SdHoareTripleChecker+Valid, 12835 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:17,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4520 Valid, 12835 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:54:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2025-03-08 06:54:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 2474. [2025-03-08 06:54:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2426 states have (on average 1.8272877164056058) internal successors, (4433), 2430 states have internal predecessors, (4433), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-08 06:54:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4498 transitions. [2025-03-08 06:54:17,890 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4498 transitions. Word has length 89 [2025-03-08 06:54:17,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:17,891 INFO L471 AbstractCegarLoop]: Abstraction has 2474 states and 4498 transitions. [2025-03-08 06:54:17,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4498 transitions. [2025-03-08 06:54:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:17,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:17,895 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] [2025-03-08 06:54:17,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 06:54:17,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:17,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash 19706843, now seen corresponding path program 1 times [2025-03-08 06:54:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:17,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321177672] [2025-03-08 06:54:17,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:17,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:17,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:17,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:17,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:17,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:18,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:18,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321177672] [2025-03-08 06:54:18,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321177672] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:18,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:18,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:54:18,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314251034] [2025-03-08 06:54:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:18,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:54:18,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:18,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:54:18,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:54:18,044 INFO L87 Difference]: Start difference. First operand 2474 states and 4498 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:18,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:18,282 INFO L93 Difference]: Finished difference Result 2845 states and 5077 transitions. [2025-03-08 06:54:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:54:18,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:18,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:18,294 INFO L225 Difference]: With dead ends: 2845 [2025-03-08 06:54:18,294 INFO L226 Difference]: Without dead ends: 2504 [2025-03-08 06:54:18,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:18,298 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4310 mSDsluCounter, 8245 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 12407 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:18,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4322 Valid, 12407 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:54:18,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2025-03-08 06:54:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 2474. [2025-03-08 06:54:18,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 2426 states have (on average 1.8264633140972795) internal successors, (4431), 2430 states have internal predecessors, (4431), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2025-03-08 06:54:18,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 4496 transitions. [2025-03-08 06:54:18,357 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 4496 transitions. Word has length 89 [2025-03-08 06:54:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:18,357 INFO L471 AbstractCegarLoop]: Abstraction has 2474 states and 4496 transitions. [2025-03-08 06:54:18,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:18,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 4496 transitions. [2025-03-08 06:54:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:18,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:18,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:54:18,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 06:54:18,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:18,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:18,361 INFO L85 PathProgramCache]: Analyzing trace with hash -935814436, now seen corresponding path program 1 times [2025-03-08 06:54:18,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:18,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021206122] [2025-03-08 06:54:18,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:18,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:18,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:18,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:18,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:18,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:18,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:18,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021206122] [2025-03-08 06:54:18,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021206122] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:18,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:54:18,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120815352] [2025-03-08 06:54:18,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:18,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:54:18,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:18,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:54:18,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:18,538 INFO L87 Difference]: Start difference. First operand 2474 states and 4496 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:19,001 INFO L93 Difference]: Finished difference Result 3025 states and 5344 transitions. [2025-03-08 06:54:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:54:19,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:19,011 INFO L225 Difference]: With dead ends: 3025 [2025-03-08 06:54:19,011 INFO L226 Difference]: Without dead ends: 2684 [2025-03-08 06:54:19,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:54:19,014 INFO L435 NwaCegarLoop]: 4310 mSDtfsCounter, 4426 mSDsluCounter, 12912 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 17222 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:19,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 17222 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 06:54:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2025-03-08 06:54:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2633. [2025-03-08 06:54:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2565 states have (on average 1.8097465886939572) internal successors, (4642), 2570 states have internal predecessors, (4642), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2025-03-08 06:54:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 4736 transitions. [2025-03-08 06:54:19,075 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 4736 transitions. Word has length 89 [2025-03-08 06:54:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:19,075 INFO L471 AbstractCegarLoop]: Abstraction has 2633 states and 4736 transitions. [2025-03-08 06:54:19,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 4736 transitions. [2025-03-08 06:54:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:19,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:19,077 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] [2025-03-08 06:54:19,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 06:54:19,078 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:19,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1250119611, now seen corresponding path program 1 times [2025-03-08 06:54:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:19,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876358904] [2025-03-08 06:54:19,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:19,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:19,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:19,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:19,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:19,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:19,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876358904] [2025-03-08 06:54:19,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876358904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:19,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:19,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:54:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774804252] [2025-03-08 06:54:19,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:19,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:54:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:19,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:54:19,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:19,222 INFO L87 Difference]: Start difference. First operand 2633 states and 4736 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:19,647 INFO L93 Difference]: Finished difference Result 3521 states and 6101 transitions. [2025-03-08 06:54:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:54:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:19,659 INFO L225 Difference]: With dead ends: 3521 [2025-03-08 06:54:19,659 INFO L226 Difference]: Without dead ends: 3021 [2025-03-08 06:54:19,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:54:19,663 INFO L435 NwaCegarLoop]: 4306 mSDtfsCounter, 4421 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4433 SdHoareTripleChecker+Valid, 17206 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:19,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4433 Valid, 17206 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:54:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2025-03-08 06:54:19,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2966. [2025-03-08 06:54:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2856 states have (on average 1.7811624649859943) internal successors, (5087), 2865 states have internal predecessors, (5087), 72 states have call successors, (72), 31 states have call predecessors, (72), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2025-03-08 06:54:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 5245 transitions. [2025-03-08 06:54:19,736 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 5245 transitions. Word has length 89 [2025-03-08 06:54:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:19,736 INFO L471 AbstractCegarLoop]: Abstraction has 2966 states and 5245 transitions. [2025-03-08 06:54:19,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 5245 transitions. [2025-03-08 06:54:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:19,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:19,738 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] [2025-03-08 06:54:19,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 06:54:19,738 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:19,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:19,738 INFO L85 PathProgramCache]: Analyzing trace with hash 766444284, now seen corresponding path program 1 times [2025-03-08 06:54:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702874765] [2025-03-08 06:54:19,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:19,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:19,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:19,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:19,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:19,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:19,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702874765] [2025-03-08 06:54:19,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702874765] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:19,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:19,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:54:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293899627] [2025-03-08 06:54:19,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:19,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:54:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:19,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:54:19,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:19,835 INFO L87 Difference]: Start difference. First operand 2966 states and 5245 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:20,351 INFO L93 Difference]: Finished difference Result 4568 states and 7728 transitions. [2025-03-08 06:54:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:54:20,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:20,365 INFO L225 Difference]: With dead ends: 4568 [2025-03-08 06:54:20,365 INFO L226 Difference]: Without dead ends: 3735 [2025-03-08 06:54:20,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:54:20,369 INFO L435 NwaCegarLoop]: 4303 mSDtfsCounter, 4416 mSDsluCounter, 12891 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4428 SdHoareTripleChecker+Valid, 17194 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:20,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4428 Valid, 17194 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:54:20,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2025-03-08 06:54:20,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3671. [2025-03-08 06:54:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3471 states have (on average 1.738692019590896) internal successors, (6035), 3494 states have internal predecessors, (6035), 124 states have call successors, (124), 55 states have call predecessors, (124), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2025-03-08 06:54:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 6345 transitions. [2025-03-08 06:54:20,491 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 6345 transitions. Word has length 89 [2025-03-08 06:54:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:20,491 INFO L471 AbstractCegarLoop]: Abstraction has 3671 states and 6345 transitions. [2025-03-08 06:54:20,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 6345 transitions. [2025-03-08 06:54:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:20,497 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:20,497 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] [2025-03-08 06:54:20,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 06:54:20,498 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:20,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1720673179, now seen corresponding path program 1 times [2025-03-08 06:54:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135302619] [2025-03-08 06:54:20,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:20,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:20,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:20,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:20,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:20,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:20,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135302619] [2025-03-08 06:54:20,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135302619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:20,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:20,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:54:20,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133143844] [2025-03-08 06:54:20,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:20,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:54:20,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:20,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:54:20,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:20,611 INFO L87 Difference]: Start difference. First operand 3671 states and 6345 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:21,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:21,156 INFO L93 Difference]: Finished difference Result 7063 states and 11691 transitions. [2025-03-08 06:54:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:54:21,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:21,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:21,177 INFO L225 Difference]: With dead ends: 7063 [2025-03-08 06:54:21,178 INFO L226 Difference]: Without dead ends: 5525 [2025-03-08 06:54:21,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:54:21,185 INFO L435 NwaCegarLoop]: 4298 mSDtfsCounter, 4545 mSDsluCounter, 12871 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4562 SdHoareTripleChecker+Valid, 17169 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:21,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4562 Valid, 17169 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 06:54:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2025-03-08 06:54:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5156. [2025-03-08 06:54:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 4766 states have (on average 1.6900965169953839) internal successors, (8055), 4835 states have internal predecessors, (8055), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-08 06:54:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 8749 transitions. [2025-03-08 06:54:21,402 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 8749 transitions. Word has length 89 [2025-03-08 06:54:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:21,402 INFO L471 AbstractCegarLoop]: Abstraction has 5156 states and 8749 transitions. [2025-03-08 06:54:21,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 8749 transitions. [2025-03-08 06:54:21,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:21,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:21,406 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] [2025-03-08 06:54:21,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 06:54:21,406 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:21,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1474360092, now seen corresponding path program 1 times [2025-03-08 06:54:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:21,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310413786] [2025-03-08 06:54:21,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:21,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:21,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:21,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:21,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:21,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310413786] [2025-03-08 06:54:21,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310413786] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:21,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:21,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:54:21,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168808264] [2025-03-08 06:54:21,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:21,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:54:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:21,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:54:21,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:54:21,472 INFO L87 Difference]: Start difference. First operand 5156 states and 8749 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:21,734 INFO L93 Difference]: Finished difference Result 8594 states and 14394 transitions. [2025-03-08 06:54:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:54:21,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:21,762 INFO L225 Difference]: With dead ends: 8594 [2025-03-08 06:54:21,762 INFO L226 Difference]: Without dead ends: 5571 [2025-03-08 06:54:21,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:21,774 INFO L435 NwaCegarLoop]: 4142 mSDtfsCounter, 4308 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 12355 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:21,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4320 Valid, 12355 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:54:21,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5571 states. [2025-03-08 06:54:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5571 to 5156. [2025-03-08 06:54:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 4766 states have (on average 1.6865295845572807) internal successors, (8038), 4835 states have internal predecessors, (8038), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2025-03-08 06:54:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 8732 transitions. [2025-03-08 06:54:21,961 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 8732 transitions. Word has length 89 [2025-03-08 06:54:21,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:21,962 INFO L471 AbstractCegarLoop]: Abstraction has 5156 states and 8732 transitions. [2025-03-08 06:54:21,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 8732 transitions. [2025-03-08 06:54:21,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:21,966 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:21,966 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] [2025-03-08 06:54:21,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 06:54:21,967 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:21,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash -196153477, now seen corresponding path program 1 times [2025-03-08 06:54:21,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:21,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630187827] [2025-03-08 06:54:21,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:21,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:21,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:21,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:21,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:21,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:22,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:22,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630187827] [2025-03-08 06:54:22,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630187827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:22,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:22,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 06:54:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846831190] [2025-03-08 06:54:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:22,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 06:54:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:22,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 06:54:22,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:22,063 INFO L87 Difference]: Start difference. First operand 5156 states and 8732 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:22,635 INFO L93 Difference]: Finished difference Result 11730 states and 19474 transitions. [2025-03-08 06:54:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 06:54:22,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:22,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:22,671 INFO L225 Difference]: With dead ends: 11730 [2025-03-08 06:54:22,672 INFO L226 Difference]: Without dead ends: 8707 [2025-03-08 06:54:22,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 06:54:22,686 INFO L435 NwaCegarLoop]: 4290 mSDtfsCounter, 4472 mSDsluCounter, 12848 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 17138 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:22,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 17138 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 06:54:22,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8707 states. [2025-03-08 06:54:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8707 to 8264. [2025-03-08 06:54:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 7448 states have (on average 1.6380236305048335) internal successors, (12200), 7663 states have internal predecessors, (12200), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:54:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 14030 transitions. [2025-03-08 06:54:23,095 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 14030 transitions. Word has length 89 [2025-03-08 06:54:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:23,096 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 14030 transitions. [2025-03-08 06:54:23,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:23,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 14030 transitions. [2025-03-08 06:54:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:23,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:23,104 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] [2025-03-08 06:54:23,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 06:54:23,104 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:23,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash -804230340, now seen corresponding path program 1 times [2025-03-08 06:54:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402897888] [2025-03-08 06:54:23,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:23,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:23,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:23,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:23,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:23,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402897888] [2025-03-08 06:54:23,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402897888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:23,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:23,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:54:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898899095] [2025-03-08 06:54:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:23,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:54:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:23,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:54:23,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:54:23,222 INFO L87 Difference]: Start difference. First operand 8264 states and 14030 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:23,738 INFO L93 Difference]: Finished difference Result 15130 states and 25910 transitions. [2025-03-08 06:54:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:54:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:23,768 INFO L225 Difference]: With dead ends: 15130 [2025-03-08 06:54:23,768 INFO L226 Difference]: Without dead ends: 8999 [2025-03-08 06:54:23,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:23,782 INFO L435 NwaCegarLoop]: 4146 mSDtfsCounter, 4297 mSDsluCounter, 8213 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4309 SdHoareTripleChecker+Valid, 12359 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:23,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4309 Valid, 12359 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 06:54:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8999 states. [2025-03-08 06:54:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8999 to 8264. [2025-03-08 06:54:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 7448 states have (on average 1.6335929108485499) internal successors, (12167), 7663 states have internal predecessors, (12167), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:54:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 13997 transitions. [2025-03-08 06:54:24,169 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 13997 transitions. Word has length 89 [2025-03-08 06:54:24,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:24,170 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 13997 transitions. [2025-03-08 06:54:24,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 13997 transitions. [2025-03-08 06:54:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:24,177 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:24,177 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:54:24,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 06:54:24,177 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:24,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash 977269595, now seen corresponding path program 1 times [2025-03-08 06:54:24,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439194813] [2025-03-08 06:54:24,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:24,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:24,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:24,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:24,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:24,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:24,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439194813] [2025-03-08 06:54:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439194813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 06:54:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382817033] [2025-03-08 06:54:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:24,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 06:54:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:24,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 06:54:24,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 06:54:24,255 INFO L87 Difference]: Start difference. First operand 8264 states and 13997 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:24,843 INFO L93 Difference]: Finished difference Result 14885 states and 25354 transitions. [2025-03-08 06:54:24,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:54:24,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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 89 [2025-03-08 06:54:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:24,879 INFO L225 Difference]: With dead ends: 14885 [2025-03-08 06:54:24,879 INFO L226 Difference]: Without dead ends: 8754 [2025-03-08 06:54:24,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:24,899 INFO L435 NwaCegarLoop]: 4143 mSDtfsCounter, 4294 mSDsluCounter, 8208 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 12351 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:24,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4306 Valid, 12351 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:54:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8754 states. [2025-03-08 06:54:25,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8754 to 8264. [2025-03-08 06:54:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 7448 states have (on average 1.6291621911922665) internal successors, (12134), 7663 states have internal predecessors, (12134), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2025-03-08 06:54:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 13964 transitions. [2025-03-08 06:54:25,420 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 13964 transitions. Word has length 89 [2025-03-08 06:54:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:25,420 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 13964 transitions. [2025-03-08 06:54:25,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 13964 transitions. [2025-03-08 06:54:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 06:54:25,426 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:25,426 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] [2025-03-08 06:54:25,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 06:54:25,426 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:25,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:25,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2013303972, now seen corresponding path program 1 times [2025-03-08 06:54:25,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:25,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595589729] [2025-03-08 06:54:25,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:25,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:25,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 06:54:25,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 06:54:25,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:25,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 06:54:25,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:25,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595589729] [2025-03-08 06:54:25,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595589729] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:25,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 06:54:25,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 06:54:25,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751049610] [2025-03-08 06:54:25,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:25,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 06:54:25,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:25,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 06:54:25,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:54:25,478 INFO L87 Difference]: Start difference. First operand 8264 states and 13964 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:25,886 INFO L93 Difference]: Finished difference Result 20222 states and 33738 transitions. [2025-03-08 06:54:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 06:54:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 2 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 89 [2025-03-08 06:54:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:25,934 INFO L225 Difference]: With dead ends: 20222 [2025-03-08 06:54:25,934 INFO L226 Difference]: Without dead ends: 14092 [2025-03-08 06:54:25,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 06:54:25,957 INFO L435 NwaCegarLoop]: 4451 mSDtfsCounter, 4411 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 8833 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:25,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 8833 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 06:54:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14092 states. [2025-03-08 06:54:26,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14092 to 14059. [2025-03-08 06:54:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14059 states, 12435 states have (on average 1.5709690390028146) internal successors, (19535), 12895 states have internal predecessors, (19535), 802 states have call successors, (802), 397 states have call predecessors, (802), 820 states have return successors, (2817), 798 states have call predecessors, (2817), 800 states have call successors, (2817) [2025-03-08 06:54:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14059 states to 14059 states and 23154 transitions. [2025-03-08 06:54:26,552 INFO L78 Accepts]: Start accepts. Automaton has 14059 states and 23154 transitions. Word has length 89 [2025-03-08 06:54:26,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:26,553 INFO L471 AbstractCegarLoop]: Abstraction has 14059 states and 23154 transitions. [2025-03-08 06:54:26,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 06:54:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand 14059 states and 23154 transitions. [2025-03-08 06:54:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 06:54:26,573 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:26,573 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:54:26,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 06:54:26,573 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:26,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:26,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1575326560, now seen corresponding path program 1 times [2025-03-08 06:54:26,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:26,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854879551] [2025-03-08 06:54:26,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:26,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:26,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:54:26,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:54:26,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:26,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:54:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854879551] [2025-03-08 06:54:26,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854879551] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:54:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240538757] [2025-03-08 06:54:26,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:54:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:54:26,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:54:26,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 06:54:26,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:54:26,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:54:26,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:26,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:26,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:54:26,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:54:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 06:54:26,816 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:54:26,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240538757] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:26,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:54:26,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:54:26,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983772421] [2025-03-08 06:54:26,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:26,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:54:26,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:26,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:54:26,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:26,817 INFO L87 Difference]: Start difference. First operand 14059 states and 23154 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:54:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:27,719 INFO L93 Difference]: Finished difference Result 37578 states and 61344 transitions. [2025-03-08 06:54:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:54:27,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2025-03-08 06:54:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:27,827 INFO L225 Difference]: With dead ends: 37578 [2025-03-08 06:54:27,827 INFO L226 Difference]: Without dead ends: 25653 [2025-03-08 06:54:27,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:27,858 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4179 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4179 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:27,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4179 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:54:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25653 states. [2025-03-08 06:54:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25653 to 25583. [2025-03-08 06:54:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25583 states, 22409 states have (on average 1.5425944932839484) internal successors, (34568), 23326 states have internal predecessors, (34568), 1532 states have call successors, (1532), 793 states have call predecessors, (1532), 1640 states have return successors, (5533), 1495 states have call predecessors, (5533), 1530 states have call successors, (5533) [2025-03-08 06:54:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25583 states to 25583 states and 41633 transitions. [2025-03-08 06:54:29,451 INFO L78 Accepts]: Start accepts. Automaton has 25583 states and 41633 transitions. Word has length 144 [2025-03-08 06:54:29,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:29,451 INFO L471 AbstractCegarLoop]: Abstraction has 25583 states and 41633 transitions. [2025-03-08 06:54:29,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:54:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 25583 states and 41633 transitions. [2025-03-08 06:54:29,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 06:54:29,484 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:29,484 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:54:29,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 06:54:29,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 06:54:29,685 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:29,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash -418988570, now seen corresponding path program 1 times [2025-03-08 06:54:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:29,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332330930] [2025-03-08 06:54:29,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:29,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:29,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:54:29,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:54:29,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:29,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:54:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332330930] [2025-03-08 06:54:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332330930] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:54:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021129982] [2025-03-08 06:54:29,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:54:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:54:29,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:54:29,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 06:54:29,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:54:29,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:54:29,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:29,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:29,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:54:29,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:54:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 06:54:29,934 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:54:29,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021129982] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:29,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:54:29,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:54:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260133555] [2025-03-08 06:54:29,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:29,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:54:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:29,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:54:29,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:29,938 INFO L87 Difference]: Start difference. First operand 25583 states and 41633 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:54:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:31,927 INFO L93 Difference]: Finished difference Result 71820 states and 116587 transitions. [2025-03-08 06:54:31,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:54:31,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2025-03-08 06:54:31,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:32,128 INFO L225 Difference]: With dead ends: 71820 [2025-03-08 06:54:32,128 INFO L226 Difference]: Without dead ends: 48371 [2025-03-08 06:54:32,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:32,195 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4173 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:32,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:54:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48371 states. [2025-03-08 06:54:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48371 to 48235. [2025-03-08 06:54:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48235 states, 42027 states have (on average 1.52535274942299) internal successors, (64106), 43858 states have internal predecessors, (64106), 2926 states have call successors, (2926), 1585 states have call predecessors, (2926), 3280 states have return successors, (10899), 2823 states have call predecessors, (10899), 2924 states have call successors, (10899) [2025-03-08 06:54:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48235 states to 48235 states and 77931 transitions. [2025-03-08 06:54:35,115 INFO L78 Accepts]: Start accepts. Automaton has 48235 states and 77931 transitions. Word has length 144 [2025-03-08 06:54:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:35,117 INFO L471 AbstractCegarLoop]: Abstraction has 48235 states and 77931 transitions. [2025-03-08 06:54:35,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:54:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 48235 states and 77931 transitions. [2025-03-08 06:54:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 06:54:35,168 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:35,168 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:54:35,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 06:54:35,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 06:54:35,369 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:35,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:35,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2132556564, now seen corresponding path program 1 times [2025-03-08 06:54:35,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:35,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068644944] [2025-03-08 06:54:35,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:35,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:35,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:54:35,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:54:35,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:35,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:54:35,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068644944] [2025-03-08 06:54:35,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068644944] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:54:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037320718] [2025-03-08 06:54:35,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:35,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:54:35,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:54:35,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:54:35,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 06:54:35,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:54:35,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:54:35,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:35,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:35,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:54:35,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:54:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 06:54:35,595 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:54:35,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037320718] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:35,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:54:35,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:54:35,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380373433] [2025-03-08 06:54:35,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:35,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:54:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:35,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:54:35,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:35,597 INFO L87 Difference]: Start difference. First operand 48235 states and 77931 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:54:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 06:54:39,901 INFO L93 Difference]: Finished difference Result 139500 states and 225667 transitions. [2025-03-08 06:54:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 06:54:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2025-03-08 06:54:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 06:54:40,230 INFO L225 Difference]: With dead ends: 139500 [2025-03-08 06:54:40,231 INFO L226 Difference]: Without dead ends: 93399 [2025-03-08 06:54:40,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:40,325 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4185 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 06:54:40,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 4468 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 06:54:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93399 states. [2025-03-08 06:54:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93399 to 93131. [2025-03-08 06:54:44,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93131 states, 80859 states have (on average 1.5135235409787409) internal successors, (122382), 84518 states have internal predecessors, (122382), 5710 states have call successors, (5710), 3169 states have call predecessors, (5710), 6560 states have return successors, (21627), 5475 states have call predecessors, (21627), 5708 states have call successors, (21627) [2025-03-08 06:54:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93131 states to 93131 states and 149719 transitions. [2025-03-08 06:54:44,640 INFO L78 Accepts]: Start accepts. Automaton has 93131 states and 149719 transitions. Word has length 144 [2025-03-08 06:54:44,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 06:54:44,640 INFO L471 AbstractCegarLoop]: Abstraction has 93131 states and 149719 transitions. [2025-03-08 06:54:44,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 06:54:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 93131 states and 149719 transitions. [2025-03-08 06:54:44,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-08 06:54:44,716 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 06:54:44,716 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 06:54:44,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 06:54:44,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:54:44,923 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 06:54:44,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 06:54:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1669362418, now seen corresponding path program 1 times [2025-03-08 06:54:44,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 06:54:44,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648136538] [2025-03-08 06:54:44,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 06:54:44,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:54:44,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:54:44,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:44,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:44,999 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 06:54:44,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 06:54:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648136538] [2025-03-08 06:54:44,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648136538] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 06:54:44,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841769705] [2025-03-08 06:54:44,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 06:54:44,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 06:54:44,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 06:54:45,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 06:54:45,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 06:54:45,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-08 06:54:45,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-08 06:54:45,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 06:54:45,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 06:54:45,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 06:54:45,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 06:54:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 06:54:45,187 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 06:54:45,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841769705] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 06:54:45,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 06:54:45,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-03-08 06:54:45,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189180151] [2025-03-08 06:54:45,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 06:54:45,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 06:54:45,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 06:54:45,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 06:54:45,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 06:54:45,189 INFO L87 Difference]: Start difference. First operand 93131 states and 149719 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)