./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:00:33,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:00:33,878 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:00:33,881 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:00:33,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:00:33,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:00:33,899 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:00:33,899 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:00:33,899 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:00:33,899 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:00:33,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:00:33,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:00:33,899 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:00:33,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:00:33,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:00:33,901 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:00:33,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:00:33,901 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:00:33,901 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:00:33,901 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:00:33,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:00:33,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:00:33,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:00:33,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:00:33,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:00:33,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:00:33,902 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 -> 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a [2025-03-16 20:00:34,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:00:34,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:00:34,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:00:34,108 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:00:34,109 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:00:34,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2025-03-16 20:00:35,216 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbf32f3d2/aa42307ea9844aa1b00878669689021f/FLAG6bbf7e36f [2025-03-16 20:00:35,716 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:00:35,717 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2025-03-16 20:00:35,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbf32f3d2/aa42307ea9844aa1b00878669689021f/FLAG6bbf7e36f [2025-03-16 20:00:35,776 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbf32f3d2/aa42307ea9844aa1b00878669689021f [2025-03-16 20:00:35,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:00:35,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:00:35,783 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:00:35,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:00:35,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:00:35,787 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:00:35" (1/1) ... [2025-03-16 20:00:35,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5989a0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:35, skipping insertion in model container [2025-03-16 20:00:35,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:00:35" (1/1) ... [2025-03-16 20:00:35,909 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:00:36,916 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_label44+token_ring.05.cil-1.c[377340,377353] [2025-03-16 20:00:36,941 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_label44+token_ring.05.cil-1.c[383339,383352] [2025-03-16 20:00:37,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:00:37,158 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:00:37,657 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_label44+token_ring.05.cil-1.c[377340,377353] [2025-03-16 20:00:37,662 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_label44+token_ring.05.cil-1.c[383339,383352] [2025-03-16 20:00:37,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:00:37,709 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:00:37,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37 WrapperNode [2025-03-16 20:00:37,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:00:37,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:00:37,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:00:37,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:00:37,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:37,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,035 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12786 [2025-03-16 20:00:38,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:00:38,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:00:38,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:00:38,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:00:38,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,201 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 20:00:38,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,366 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:00:38,483 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:00:38,484 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:00:38,484 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:00:38,485 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (1/1) ... [2025-03-16 20:00:38,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:00:38,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:00:38,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 20:00:38,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 20:00:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:00:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:00:38,569 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:00:38,569 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:00:38,569 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:00:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:00:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:00:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:00:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:00:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:00:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:00:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:00:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:00:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:00:38,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:00:38,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:00:38,669 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:00:38,670 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:00:44,729 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:00:44,730 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:00:44,730 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:00:44,730 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:00:44,731 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:00:44,731 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:00:44,731 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:00:44,961 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2025-03-16 20:00:44,962 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:00:45,010 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:00:45,011 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:00:45,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:00:45 BoogieIcfgContainer [2025-03-16 20:00:45,012 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:00:45,014 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:00:45,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:00:45,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:00:45,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:00:35" (1/3) ... [2025-03-16 20:00:45,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c9c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:00:45, skipping insertion in model container [2025-03-16 20:00:45,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:37" (2/3) ... [2025-03-16 20:00:45,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c9c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:00:45, skipping insertion in model container [2025-03-16 20:00:45,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:00:45" (3/3) ... [2025-03-16 20:00:45,019 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.05.cil-1.c [2025-03-16 20:00:45,029 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:00:45,032 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label44+token_ring.05.cil-1.c that has 7 procedures, 2316 locations, 1 initial locations, 9 loop locations, and 2 error locations. [2025-03-16 20:00:45,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:00:45,114 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;@7f037863, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:00:45,114 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:00:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 2316 states, 2289 states have (on average 1.875491480996068) internal successors, (4293), 2291 states have internal predecessors, (4293), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-16 20:00:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:45,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:45,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:45,131 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:45,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2125957295, now seen corresponding path program 1 times [2025-03-16 20:00:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649400584] [2025-03-16 20:00:45,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:45,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:45,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:45,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:45,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:45,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649400584] [2025-03-16 20:00:45,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649400584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:45,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:45,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:45,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413261669] [2025-03-16 20:00:45,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:45,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:45,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:45,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:45,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:45,535 INFO L87 Difference]: Start difference. First operand has 2316 states, 2289 states have (on average 1.875491480996068) internal successors, (4293), 2291 states have internal predecessors, (4293), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:46,042 INFO L93 Difference]: Finished difference Result 4824 states and 8974 transitions. [2025-03-16 20:00:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:00:46,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:46,068 INFO L225 Difference]: With dead ends: 4824 [2025-03-16 20:00:46,068 INFO L226 Difference]: Without dead ends: 2511 [2025-03-16 20:00:46,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:46,080 INFO L435 NwaCegarLoop]: 4197 mSDtfsCounter, 4499 mSDsluCounter, 8510 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4512 SdHoareTripleChecker+Valid, 12707 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:46,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4512 Valid, 12707 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:46,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2025-03-16 20:00:46,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2496. [2025-03-16 20:00:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2448 states have (on average 1.8284313725490196) internal successors, (4476), 2451 states have internal predecessors, (4476), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:00:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4543 transitions. [2025-03-16 20:00:46,234 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4543 transitions. Word has length 91 [2025-03-16 20:00:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:46,235 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 4543 transitions. [2025-03-16 20:00:46,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4543 transitions. [2025-03-16 20:00:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:46,239 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:46,239 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:46,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:00:46,242 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:46,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:46,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322797, now seen corresponding path program 1 times [2025-03-16 20:00:46,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:46,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729428984] [2025-03-16 20:00:46,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:46,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:46,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:46,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:46,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:46,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:46,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729428984] [2025-03-16 20:00:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729428984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:46,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:46,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387805045] [2025-03-16 20:00:46,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:46,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:46,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:46,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:46,444 INFO L87 Difference]: Start difference. First operand 2496 states and 4543 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:46,696 INFO L93 Difference]: Finished difference Result 2896 states and 5179 transitions. [2025-03-16 20:00:46,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:46,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:46,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:46,709 INFO L225 Difference]: With dead ends: 2896 [2025-03-16 20:00:46,709 INFO L226 Difference]: Without dead ends: 2532 [2025-03-16 20:00:46,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:46,712 INFO L435 NwaCegarLoop]: 4179 mSDtfsCounter, 4342 mSDsluCounter, 8273 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 12452 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:46,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 12452 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:00:46,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2025-03-16 20:00:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2496. [2025-03-16 20:00:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2448 states have (on average 1.8276143790849673) internal successors, (4474), 2451 states have internal predecessors, (4474), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 20:00:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4541 transitions. [2025-03-16 20:00:46,852 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4541 transitions. Word has length 91 [2025-03-16 20:00:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:46,852 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 4541 transitions. [2025-03-16 20:00:46,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4541 transitions. [2025-03-16 20:00:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:46,855 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:46,855 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:46,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:00:46,856 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:46,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash -310507598, now seen corresponding path program 1 times [2025-03-16 20:00:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:46,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847965709] [2025-03-16 20:00:46,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:46,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:46,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:46,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:46,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:46,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:47,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847965709] [2025-03-16 20:00:47,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847965709] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:47,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:47,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:47,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174198822] [2025-03-16 20:00:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:47,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:47,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:47,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:47,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:47,006 INFO L87 Difference]: Start difference. First operand 2496 states and 4541 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:47,473 INFO L93 Difference]: Finished difference Result 3090 states and 5474 transitions. [2025-03-16 20:00:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:47,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:47,485 INFO L225 Difference]: With dead ends: 3090 [2025-03-16 20:00:47,486 INFO L226 Difference]: Without dead ends: 2726 [2025-03-16 20:00:47,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:47,489 INFO L435 NwaCegarLoop]: 4338 mSDtfsCounter, 4481 mSDsluCounter, 13004 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 17342 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:47,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4494 Valid, 17342 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2025-03-16 20:00:47,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2667. [2025-03-16 20:00:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2598 states have (on average 1.811008468052348) internal successors, (4705), 2602 states have internal predecessors, (4705), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2025-03-16 20:00:47,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4803 transitions. [2025-03-16 20:00:47,560 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4803 transitions. Word has length 91 [2025-03-16 20:00:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:47,561 INFO L471 AbstractCegarLoop]: Abstraction has 2667 states and 4803 transitions. [2025-03-16 20:00:47,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:47,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4803 transitions. [2025-03-16 20:00:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:47,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:47,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:47,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:00:47,564 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:47,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash 556544627, now seen corresponding path program 1 times [2025-03-16 20:00:47,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:47,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000748539] [2025-03-16 20:00:47,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:47,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:47,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:47,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:47,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:47,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:47,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:47,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000748539] [2025-03-16 20:00:47,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000748539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:47,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:47,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:47,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204899815] [2025-03-16 20:00:47,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:47,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:47,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:47,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:47,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:47,708 INFO L87 Difference]: Start difference. First operand 2667 states and 4803 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:48,136 INFO L93 Difference]: Finished difference Result 3628 states and 6309 transitions. [2025-03-16 20:00:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:48,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:48,148 INFO L225 Difference]: With dead ends: 3628 [2025-03-16 20:00:48,148 INFO L226 Difference]: Without dead ends: 3093 [2025-03-16 20:00:48,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:48,151 INFO L435 NwaCegarLoop]: 4334 mSDtfsCounter, 4476 mSDsluCounter, 12992 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 17326 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:48,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 17326 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2025-03-16 20:00:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3028. [2025-03-16 20:00:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2915 states have (on average 1.7831903945111491) internal successors, (5198), 2923 states have internal predecessors, (5198), 75 states have call successors, (75), 30 states have call predecessors, (75), 36 states have return successors, (91), 78 states have call predecessors, (91), 75 states have call successors, (91) [2025-03-16 20:00:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 5364 transitions. [2025-03-16 20:00:48,331 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 5364 transitions. Word has length 91 [2025-03-16 20:00:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:48,336 INFO L471 AbstractCegarLoop]: Abstraction has 3028 states and 5364 transitions. [2025-03-16 20:00:48,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 5364 transitions. [2025-03-16 20:00:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:48,339 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:48,339 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:48,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:00:48,340 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:48,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:48,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1000156050, now seen corresponding path program 1 times [2025-03-16 20:00:48,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:48,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144877784] [2025-03-16 20:00:48,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:48,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:48,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:48,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:48,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:48,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:48,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:48,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144877784] [2025-03-16 20:00:48,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144877784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:48,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:48,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:48,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934301156] [2025-03-16 20:00:48,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:48,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:48,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:48,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:48,605 INFO L87 Difference]: Start difference. First operand 3028 states and 5364 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:49,090 INFO L93 Difference]: Finished difference Result 4775 states and 8124 transitions. [2025-03-16 20:00:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:49,105 INFO L225 Difference]: With dead ends: 4775 [2025-03-16 20:00:49,105 INFO L226 Difference]: Without dead ends: 3879 [2025-03-16 20:00:49,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:49,110 INFO L435 NwaCegarLoop]: 4331 mSDtfsCounter, 4471 mSDsluCounter, 12983 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 17314 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:49,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4484 Valid, 17314 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2025-03-16 20:00:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3801. [2025-03-16 20:00:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3594 states have (on average 1.7434613244296049) internal successors, (6266), 3616 states have internal predecessors, (6266), 131 states have call successors, (131), 54 states have call predecessors, (131), 74 states have return successors, (195), 138 states have call predecessors, (195), 131 states have call successors, (195) [2025-03-16 20:00:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 6592 transitions. [2025-03-16 20:00:49,209 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 6592 transitions. Word has length 91 [2025-03-16 20:00:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:49,209 INFO L471 AbstractCegarLoop]: Abstraction has 3801 states and 6592 transitions. [2025-03-16 20:00:49,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 6592 transitions. [2025-03-16 20:00:49,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:49,211 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:49,211 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:49,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:00:49,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:49,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash 44634771, now seen corresponding path program 1 times [2025-03-16 20:00:49,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:49,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447108146] [2025-03-16 20:00:49,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:49,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:49,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:49,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:49,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:49,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:49,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:49,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447108146] [2025-03-16 20:00:49,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447108146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:49,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:49,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463618793] [2025-03-16 20:00:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:49,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:49,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:49,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:49,317 INFO L87 Difference]: Start difference. First operand 3801 states and 6592 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:49,803 INFO L93 Difference]: Finished difference Result 7254 states and 12166 transitions. [2025-03-16 20:00:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:49,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:49,824 INFO L225 Difference]: With dead ends: 7254 [2025-03-16 20:00:49,825 INFO L226 Difference]: Without dead ends: 5585 [2025-03-16 20:00:49,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:49,831 INFO L435 NwaCegarLoop]: 4328 mSDtfsCounter, 4466 mSDsluCounter, 12974 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:49,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 17302 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:00:49,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5585 states. [2025-03-16 20:00:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5585 to 5482. [2025-03-16 20:00:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 5069 states have (on average 1.699348984020517) internal successors, (8614), 5137 states have internal predecessors, (8614), 243 states have call successors, (243), 102 states have call predecessors, (243), 168 states have return successors, (499), 258 states have call predecessors, (499), 243 states have call successors, (499) [2025-03-16 20:00:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 9356 transitions. [2025-03-16 20:00:50,013 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 9356 transitions. Word has length 91 [2025-03-16 20:00:50,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:50,014 INFO L471 AbstractCegarLoop]: Abstraction has 5482 states and 9356 transitions. [2025-03-16 20:00:50,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:50,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 9356 transitions. [2025-03-16 20:00:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:50,022 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:50,022 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:50,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:00:50,022 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:50,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2064398478, now seen corresponding path program 1 times [2025-03-16 20:00:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046345496] [2025-03-16 20:00:50,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:50,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:50,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:50,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:50,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:50,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:50,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046345496] [2025-03-16 20:00:50,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046345496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:50,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:50,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941114499] [2025-03-16 20:00:50,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:50,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:50,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:50,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:50,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:50,131 INFO L87 Difference]: Start difference. First operand 5482 states and 9356 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:50,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:50,783 INFO L93 Difference]: Finished difference Result 13237 states and 22329 transitions. [2025-03-16 20:00:50,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:50,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:50,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:50,821 INFO L225 Difference]: With dead ends: 13237 [2025-03-16 20:00:50,821 INFO L226 Difference]: Without dead ends: 9887 [2025-03-16 20:00:50,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:50,833 INFO L435 NwaCegarLoop]: 4323 mSDtfsCounter, 4607 mSDsluCounter, 12954 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4626 SdHoareTripleChecker+Valid, 17277 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:50,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4626 Valid, 17277 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:00:50,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9887 states. [2025-03-16 20:00:51,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9887 to 9147. [2025-03-16 20:00:51,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9147 states, 8284 states have (on average 1.6670690487687108) internal successors, (13810), 8498 states have internal predecessors, (13810), 451 states have call successors, (451), 198 states have call predecessors, (451), 410 states have return successors, (1475), 482 states have call predecessors, (1475), 451 states have call successors, (1475) [2025-03-16 20:00:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 15736 transitions. [2025-03-16 20:00:51,195 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 15736 transitions. Word has length 91 [2025-03-16 20:00:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:51,195 INFO L471 AbstractCegarLoop]: Abstraction has 9147 states and 15736 transitions. [2025-03-16 20:00:51,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 15736 transitions. [2025-03-16 20:00:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:51,200 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:51,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:51,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:00:51,201 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:51,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:51,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1746893491, now seen corresponding path program 1 times [2025-03-16 20:00:51,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:51,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222620605] [2025-03-16 20:00:51,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:51,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:51,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:51,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:51,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:51,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:51,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:51,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222620605] [2025-03-16 20:00:51,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222620605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:51,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:51,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:51,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091087586] [2025-03-16 20:00:51,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:51,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:51,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:51,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:51,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:51,363 INFO L87 Difference]: Start difference. First operand 9147 states and 15736 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:52,191 INFO L93 Difference]: Finished difference Result 25082 states and 44155 transitions. [2025-03-16 20:00:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:52,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:52,262 INFO L225 Difference]: With dead ends: 25082 [2025-03-16 20:00:52,262 INFO L226 Difference]: Without dead ends: 18067 [2025-03-16 20:00:52,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:52,297 INFO L435 NwaCegarLoop]: 4316 mSDtfsCounter, 4545 mSDsluCounter, 12935 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 17251 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:52,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 17251 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:00:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18067 states. [2025-03-16 20:00:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18067 to 17077. [2025-03-16 20:00:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.6458333333333333) internal successors, (24964), 15836 states have internal predecessors, (24964), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:00:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30762 transitions. [2025-03-16 20:00:53,406 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30762 transitions. Word has length 91 [2025-03-16 20:00:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:53,407 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30762 transitions. [2025-03-16 20:00:53,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:53,407 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30762 transitions. [2025-03-16 20:00:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:53,416 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:53,416 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:53,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:00:53,416 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:53,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:53,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1500580404, now seen corresponding path program 1 times [2025-03-16 20:00:53,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:53,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425205468] [2025-03-16 20:00:53,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:53,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:53,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:53,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:53,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:53,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:53,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:53,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425205468] [2025-03-16 20:00:53,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425205468] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:53,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:53,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:53,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989800168] [2025-03-16 20:00:53,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:53,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:53,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:53,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:53,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:53,480 INFO L87 Difference]: Start difference. First operand 17077 states and 30762 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:54,217 INFO L93 Difference]: Finished difference Result 34946 states and 65430 transitions. [2025-03-16 20:00:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:54,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:54,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:54,297 INFO L225 Difference]: With dead ends: 34946 [2025-03-16 20:00:54,297 INFO L226 Difference]: Without dead ends: 20001 [2025-03-16 20:00:54,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:54,336 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4330 mSDsluCounter, 8238 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4343 SdHoareTripleChecker+Valid, 12400 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:54,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4343 Valid, 12400 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:00:54,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20001 states. [2025-03-16 20:00:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20001 to 17077. [2025-03-16 20:00:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.6415479957805907) internal successors, (24899), 15836 states have internal predecessors, (24899), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:00:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30697 transitions. [2025-03-16 20:00:55,390 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30697 transitions. Word has length 91 [2025-03-16 20:00:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:55,390 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30697 transitions. [2025-03-16 20:00:55,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30697 transitions. [2025-03-16 20:00:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:55,398 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:55,398 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:55,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:00:55,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:55,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash -169933165, now seen corresponding path program 1 times [2025-03-16 20:00:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150945465] [2025-03-16 20:00:55,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:55,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:55,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:55,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:55,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:55,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:55,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:55,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150945465] [2025-03-16 20:00:55,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150945465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:55,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:55,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:55,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263771602] [2025-03-16 20:00:55,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:55,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:55,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:55,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:55,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:55,464 INFO L87 Difference]: Start difference. First operand 17077 states and 30697 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:56,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:56,745 INFO L93 Difference]: Finished difference Result 34215 states and 63838 transitions. [2025-03-16 20:00:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:00:56,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:56,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:56,840 INFO L225 Difference]: With dead ends: 34215 [2025-03-16 20:00:56,841 INFO L226 Difference]: Without dead ends: 19270 [2025-03-16 20:00:56,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:56,881 INFO L435 NwaCegarLoop]: 4159 mSDtfsCounter, 4327 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 12392 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:56,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 12392 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:00:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19270 states. [2025-03-16 20:00:57,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19270 to 17077. [2025-03-16 20:00:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.637262658227848) internal successors, (24834), 15836 states have internal predecessors, (24834), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 20:00:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30632 transitions. [2025-03-16 20:00:57,789 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30632 transitions. Word has length 91 [2025-03-16 20:00:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:57,789 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30632 transitions. [2025-03-16 20:00:57,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30632 transitions. [2025-03-16 20:00:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:00:57,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:57,798 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:57,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:00:57,798 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:57,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash -778010028, now seen corresponding path program 1 times [2025-03-16 20:00:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:57,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819669646] [2025-03-16 20:00:57,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:57,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:00:57,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:00:57,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:57,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:57,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:57,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819669646] [2025-03-16 20:00:57,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819669646] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:57,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:57,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:57,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909780367] [2025-03-16 20:00:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:57,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:57,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:57,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:57,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:57,881 INFO L87 Difference]: Start difference. First operand 17077 states and 30632 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:59,402 INFO L93 Difference]: Finished difference Result 48626 states and 93277 transitions. [2025-03-16 20:00:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:59,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:00:59,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:59,550 INFO L225 Difference]: With dead ends: 48626 [2025-03-16 20:00:59,550 INFO L226 Difference]: Without dead ends: 33681 [2025-03-16 20:00:59,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:59,592 INFO L435 NwaCegarLoop]: 4303 mSDtfsCounter, 4443 mSDsluCounter, 12898 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 17201 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:59,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4462 Valid, 17201 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:00:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33681 states. [2025-03-16 20:01:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33681 to 33084. [2025-03-16 20:01:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33084 states, 28629 states have (on average 1.6048761745083657) internal successors, (45946), 30691 states have internal predecessors, (45946), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 2834 states have return successors, (18003), 1746 states have call predecessors, (18003), 1619 states have call successors, (18003) [2025-03-16 20:01:01,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33084 states to 33084 states and 65568 transitions. [2025-03-16 20:01:01,835 INFO L78 Accepts]: Start accepts. Automaton has 33084 states and 65568 transitions. Word has length 91 [2025-03-16 20:01:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:01,836 INFO L471 AbstractCegarLoop]: Abstraction has 33084 states and 65568 transitions. [2025-03-16 20:01:01,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 33084 states and 65568 transitions. [2025-03-16 20:01:01,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 20:01:01,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:01,850 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:01,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:01:01,850 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:01,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1003489907, now seen corresponding path program 1 times [2025-03-16 20:01:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747888942] [2025-03-16 20:01:01,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:01,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 20:01:01,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 20:01:01,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:01,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:01,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:01,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747888942] [2025-03-16 20:01:01,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747888942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:01,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:01,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 20:01:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454851435] [2025-03-16 20:01:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:01,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 20:01:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:01,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 20:01:01,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 20:01:01,916 INFO L87 Difference]: Start difference. First operand 33084 states and 65568 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:04,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:04,761 INFO L93 Difference]: Finished difference Result 94467 states and 189396 transitions. [2025-03-16 20:01:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:01:04,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2025-03-16 20:01:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:05,068 INFO L225 Difference]: With dead ends: 94467 [2025-03-16 20:01:05,069 INFO L226 Difference]: Without dead ends: 63516 [2025-03-16 20:01:05,187 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 [2025-03-16 20:01:05,187 INFO L435 NwaCegarLoop]: 4503 mSDtfsCounter, 4464 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 8935 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:05,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 8935 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 20:01:05,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63516 states. [2025-03-16 20:01:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63516 to 63387. [2025-03-16 20:01:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63387 states, 54483 states have (on average 1.5828974175430868) internal successors, (86241), 58734 states have internal predecessors, (86241), 3234 states have call successors, (3234), 1548 states have call predecessors, (3234), 5668 states have return successors, (35875), 3232 states have call predecessors, (35875), 3234 states have call successors, (35875) [2025-03-16 20:01:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63387 states to 63387 states and 125350 transitions. [2025-03-16 20:01:08,916 INFO L78 Accepts]: Start accepts. Automaton has 63387 states and 125350 transitions. Word has length 91 [2025-03-16 20:01:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:08,917 INFO L471 AbstractCegarLoop]: Abstraction has 63387 states and 125350 transitions. [2025-03-16 20:01:08,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 63387 states and 125350 transitions. [2025-03-16 20:01:08,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 20:01:08,998 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:08,998 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, 1, 1, 1] [2025-03-16 20:01:08,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:01:08,999 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:08,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash -282382986, now seen corresponding path program 1 times [2025-03-16 20:01:08,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:08,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097281042] [2025-03-16 20:01:08,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:09,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:01:09,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:01:09,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:09,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 20:01:09,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:09,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097281042] [2025-03-16 20:01:09,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097281042] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:01:09,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255667452] [2025-03-16 20:01:09,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:09,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:01:09,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:01:09,066 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) [2025-03-16 20:01:09,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 20:01:09,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:01:09,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:01:09,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:09,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:09,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:01:09,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:01:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 20:01:09,255 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:01:09,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255667452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:09,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:01:09,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 20:01:09,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90411330] [2025-03-16 20:01:09,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:09,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:01:09,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:09,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:01:09,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:09,257 INFO L87 Difference]: Start difference. First operand 63387 states and 125350 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:01:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:15,285 INFO L93 Difference]: Finished difference Result 184604 states and 367582 transitions. [2025-03-16 20:01:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:01:15,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2025-03-16 20:01:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:16,031 INFO L225 Difference]: With dead ends: 184604 [2025-03-16 20:01:16,031 INFO L226 Difference]: Without dead ends: 123350 [2025-03-16 20:01:16,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:16,163 INFO L435 NwaCegarLoop]: 4246 mSDtfsCounter, 4200 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 4508 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 [2025-03-16 20:01:16,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4200 Valid, 4508 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:01:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123350 states. [2025-03-16 20:01:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123350 to 123090. [2025-03-16 20:01:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123090 states, 105546 states have (on average 1.5769806529854282) internal successors, (166444), 114046 states have internal predecessors, (166444), 6206 states have call successors, (6206), 3096 states have call predecessors, (6206), 11336 states have return successors, (71361), 6075 states have call predecessors, (71361), 6206 states have call successors, (71361) [2025-03-16 20:01:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123090 states to 123090 states and 244011 transitions. [2025-03-16 20:01:24,194 INFO L78 Accepts]: Start accepts. Automaton has 123090 states and 244011 transitions. Word has length 147 [2025-03-16 20:01:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:24,195 INFO L471 AbstractCegarLoop]: Abstraction has 123090 states and 244011 transitions. [2025-03-16 20:01:24,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:01:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 123090 states and 244011 transitions. [2025-03-16 20:01:24,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 20:01:24,377 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:24,377 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, 1, 1, 1] [2025-03-16 20:01:24,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 20:01:24,578 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,SelfDestructingSolverStorable12 [2025-03-16 20:01:24,578 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:24,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:24,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1766099388, now seen corresponding path program 1 times [2025-03-16 20:01:24,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:24,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799532941] [2025-03-16 20:01:24,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:24,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:01:24,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:01:24,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:24,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 20:01:24,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799532941] [2025-03-16 20:01:24,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799532941] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 20:01:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968834797] [2025-03-16 20:01:24,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:24,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 20:01:24,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:01:24,726 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) [2025-03-16 20:01:24,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 20:01:24,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 20:01:24,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 20:01:24,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:24,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:24,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 20:01:24,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 20:01:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-16 20:01:25,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 20:01:25,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968834797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:25,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 20:01:25,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 20:01:25,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575092841] [2025-03-16 20:01:25,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:25,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:01:25,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:25,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:01:25,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:25,019 INFO L87 Difference]: Start difference. First operand 123090 states and 244011 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 20:01:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:35,295 INFO L93 Difference]: Finished difference Result 362423 states and 722925 transitions. [2025-03-16 20:01:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:01:35,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2025-03-16 20:01:35,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:36,410 INFO L225 Difference]: With dead ends: 362423 [2025-03-16 20:01:36,411 INFO L226 Difference]: Without dead ends: 241466 [2025-03-16 20:01:36,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:36,755 INFO L435 NwaCegarLoop]: 4246 mSDtfsCounter, 4195 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4195 SdHoareTripleChecker+Valid, 4508 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 [2025-03-16 20:01:36,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4195 Valid, 4508 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 20:01:36,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241466 states.