./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed3d7c65b5f276938c992de2fd71c82e0f79af5cc9147088727c012b3d12461a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:05:41,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:05:41,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:05:41,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:05:41,860 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:05:41,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:05:41,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:05:41,884 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:05:41,884 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:05:41,885 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:05:41,885 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:05:41,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:05:41,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:05:41,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:05:41,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:05:41,886 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:05:41,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:05:41,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:05:41,887 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:05:41,887 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 -> ed3d7c65b5f276938c992de2fd71c82e0f79af5cc9147088727c012b3d12461a [2025-03-16 20:05:42,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:05:42,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:05:42,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:05:42,146 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:05:42,146 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:05:42,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c [2025-03-16 20:05:43,294 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d31cd38/1c651236e59544a2b250422f71fdf85c/FLAG8c88a8a1d [2025-03-16 20:05:43,731 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:05:43,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c [2025-03-16 20:05:43,776 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d31cd38/1c651236e59544a2b250422f71fdf85c/FLAG8c88a8a1d [2025-03-16 20:05:43,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48d31cd38/1c651236e59544a2b250422f71fdf85c [2025-03-16 20:05:43,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:05:43,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:05:43,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:05:43,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:05:43,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:05:43,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:05:43" (1/1) ... [2025-03-16 20:05:43,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a809bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:43, skipping insertion in model container [2025-03-16 20:05:43,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:05:43" (1/1) ... [2025-03-16 20:05:43,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:05:45,111 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_label47+token_ring.13.cil-2.c[377612,377625] [2025-03-16 20:05:45,140 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.13.cil-2.c[383339,383352] [2025-03-16 20:05:45,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:05:45,416 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:05:46,005 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_label47+token_ring.13.cil-2.c[377612,377625] [2025-03-16 20:05:46,011 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_label47+token_ring.13.cil-2.c[383339,383352] [2025-03-16 20:05:46,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:05:46,086 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:05:46,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46 WrapperNode [2025-03-16 20:05:46,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:05:46,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:05:46,087 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:05:46,087 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:05:46,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:46,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:46,518 INFO L138 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13242 [2025-03-16 20:05:46,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:05:46,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:05:46,520 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:05:46,520 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:05:46,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:46,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:46,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:46,733 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 20:05:46,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:46,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:46,992 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:47,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:47,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:47,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:47,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:05:47,095 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:05:47,095 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:05:47,095 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:05:47,096 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (1/1) ... [2025-03-16 20:05:47,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:05:47,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:05:47,125 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 20:05:47,128 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 20:05:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:05:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:05:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:05:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:05:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:05:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:05:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:05:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:05:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:05:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:05:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:05:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:05:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:05:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:05:47,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:05:47,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:05:47,274 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:05:47,276 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:05:53,731 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:05:53,731 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:05:53,731 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:05:53,732 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:05:53,732 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:05:53,732 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:05:53,732 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:05:53,959 INFO L? ?]: Removed 1745 outVars from TransFormulas that were not future-live. [2025-03-16 20:05:53,959 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:05:54,021 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:05:54,022 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:05:54,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:05:54 BoogieIcfgContainer [2025-03-16 20:05:54,023 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:05:54,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:05:54,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:05:54,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:05:54,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:05:43" (1/3) ... [2025-03-16 20:05:54,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a753fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:05:54, skipping insertion in model container [2025-03-16 20:05:54,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:05:46" (2/3) ... [2025-03-16 20:05:54,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a753fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:05:54, skipping insertion in model container [2025-03-16 20:05:54,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:05:54" (3/3) ... [2025-03-16 20:05:54,034 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.13.cil-2.c [2025-03-16 20:05:54,046 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:05:54,049 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label47+token_ring.13.cil-2.c that has 7 procedures, 2508 locations, 1 initial locations, 17 loop locations, and 2 error locations. [2025-03-16 20:05:54,153 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:05:54,162 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;@3941a996, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:05:54,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:05:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 2508 states, 2473 states have (on average 1.862110796603316) internal successors, (4605), 2475 states have internal predecessors, (4605), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-03-16 20:05:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:05:54,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:54,191 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:54,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:54,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:54,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1812451893, now seen corresponding path program 1 times [2025-03-16 20:05:54,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:54,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336671703] [2025-03-16 20:05:54,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:54,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:54,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:05:54,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:05:54,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:54,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:54,790 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 20:05:54,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:54,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336671703] [2025-03-16 20:05:54,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336671703] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:54,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:54,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:54,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053749820] [2025-03-16 20:05:54,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:54,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:54,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:54,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:54,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:54,820 INFO L87 Difference]: Start difference. First operand has 2508 states, 2473 states have (on average 1.862110796603316) internal successors, (4605), 2475 states have internal predecessors, (4605), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 20:05:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:55,676 INFO L93 Difference]: Finished difference Result 5416 states and 9990 transitions. [2025-03-16 20:05:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:05:55,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 171 [2025-03-16 20:05:55,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:55,698 INFO L225 Difference]: With dead ends: 5416 [2025-03-16 20:05:55,698 INFO L226 Difference]: Without dead ends: 2919 [2025-03-16 20:05:55,707 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 20:05:55,709 INFO L435 NwaCegarLoop]: 4453 mSDtfsCounter, 5155 mSDsluCounter, 9182 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 13635 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:55,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5176 Valid, 13635 Invalid, 689 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:05:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2025-03-16 20:05:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2888. [2025-03-16 20:05:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2824 states have (on average 1.8059490084985836) internal successors, (5100), 2827 states have internal predecessors, (5100), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 20:05:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 5199 transitions. [2025-03-16 20:05:55,876 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 5199 transitions. Word has length 171 [2025-03-16 20:05:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:55,877 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 5199 transitions. [2025-03-16 20:05:55,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 20:05:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 5199 transitions. [2025-03-16 20:05:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:05:55,883 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:55,883 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:55,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:05:55,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:55,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 974706125, now seen corresponding path program 1 times [2025-03-16 20:05:55,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:55,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203520289] [2025-03-16 20:05:55,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:55,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:05:55,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:05:55,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:55,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:56,118 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 20:05:56,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:56,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203520289] [2025-03-16 20:05:56,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203520289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:56,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:56,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:05:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29574838] [2025-03-16 20:05:56,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:56,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:05:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:56,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:05:56,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:05:56,124 INFO L87 Difference]: Start difference. First operand 2888 states and 5199 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:05:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:56,526 INFO L93 Difference]: Finished difference Result 3720 states and 6571 transitions. [2025-03-16 20:05:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:05:56,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:05:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:56,542 INFO L225 Difference]: With dead ends: 3720 [2025-03-16 20:05:56,542 INFO L226 Difference]: Without dead ends: 2972 [2025-03-16 20:05:56,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:56,549 INFO L435 NwaCegarLoop]: 4435 mSDtfsCounter, 4798 mSDsluCounter, 8705 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 13140 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:56,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 13140 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:05:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2025-03-16 20:05:56,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 2888. [2025-03-16 20:05:56,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2824 states have (on average 1.8052407932011332) internal successors, (5098), 2827 states have internal predecessors, (5098), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 20:05:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 5197 transitions. [2025-03-16 20:05:56,627 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 5197 transitions. Word has length 171 [2025-03-16 20:05:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:56,627 INFO L471 AbstractCegarLoop]: Abstraction has 2888 states and 5197 transitions. [2025-03-16 20:05:56,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:05:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 5197 transitions. [2025-03-16 20:05:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:05:56,632 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:56,632 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:56,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:05:56,633 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:56,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash 842382380, now seen corresponding path program 1 times [2025-03-16 20:05:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:56,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694071416] [2025-03-16 20:05:56,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:56,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:05:56,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:05:56,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:56,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:56,856 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 20:05:56,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:56,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694071416] [2025-03-16 20:05:56,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694071416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:56,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:56,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:56,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231701319] [2025-03-16 20:05:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:56,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:56,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:56,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:56,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:56,858 INFO L87 Difference]: Start difference. First operand 2888 states and 5197 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:05:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:57,769 INFO L93 Difference]: Finished difference Result 4130 states and 7234 transitions. [2025-03-16 20:05:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:57,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:05:57,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:57,786 INFO L225 Difference]: With dead ends: 4130 [2025-03-16 20:05:57,786 INFO L226 Difference]: Without dead ends: 3382 [2025-03-16 20:05:57,790 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 20:05:57,791 INFO L435 NwaCegarLoop]: 4778 mSDtfsCounter, 5153 mSDsluCounter, 14396 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5174 SdHoareTripleChecker+Valid, 19174 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:57,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5174 Valid, 19174 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:05:57,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2025-03-16 20:05:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3243. [2025-03-16 20:05:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3150 states have (on average 1.7831746031746032) internal successors, (5617), 3154 states have internal predecessors, (5617), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (75), 72 states have call predecessors, (75), 71 states have call successors, (75) [2025-03-16 20:05:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 5763 transitions. [2025-03-16 20:05:57,902 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 5763 transitions. Word has length 171 [2025-03-16 20:05:57,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:57,902 INFO L471 AbstractCegarLoop]: Abstraction has 3243 states and 5763 transitions. [2025-03-16 20:05:57,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:05:57,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 5763 transitions. [2025-03-16 20:05:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:05:57,905 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:57,905 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:57,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:05:57,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:57,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1807945197, now seen corresponding path program 1 times [2025-03-16 20:05:57,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:57,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313495702] [2025-03-16 20:05:57,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:57,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:57,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:05:57,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:05:57,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:57,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:58,104 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 20:05:58,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:58,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313495702] [2025-03-16 20:05:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313495702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:58,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:58,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545289719] [2025-03-16 20:05:58,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:58,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:58,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:58,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:58,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:58,106 INFO L87 Difference]: Start difference. First operand 3243 states and 5763 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:05:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:05:59,079 INFO L93 Difference]: Finished difference Result 5260 states and 9061 transitions. [2025-03-16 20:05:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:05:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:05:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:05:59,099 INFO L225 Difference]: With dead ends: 5260 [2025-03-16 20:05:59,099 INFO L226 Difference]: Without dead ends: 4157 [2025-03-16 20:05:59,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:05:59,106 INFO L435 NwaCegarLoop]: 4770 mSDtfsCounter, 5145 mSDsluCounter, 14374 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 19144 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-16 20:05:59,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5166 Valid, 19144 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-16 20:05:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2025-03-16 20:05:59,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 4001. [2025-03-16 20:05:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3848 states have (on average 1.7525987525987525) internal successors, (6744), 3856 states have internal predecessors, (6744), 115 states have call successors, (115), 30 states have call predecessors, (115), 36 states have return successors, (131), 118 states have call predecessors, (131), 115 states have call successors, (131) [2025-03-16 20:05:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 6990 transitions. [2025-03-16 20:05:59,230 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 6990 transitions. Word has length 171 [2025-03-16 20:05:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:05:59,230 INFO L471 AbstractCegarLoop]: Abstraction has 4001 states and 6990 transitions. [2025-03-16 20:05:59,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:05:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 6990 transitions. [2025-03-16 20:05:59,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:05:59,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:05:59,233 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:05:59,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:05:59,234 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:05:59,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:05:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1538532370, now seen corresponding path program 1 times [2025-03-16 20:05:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:05:59,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311214316] [2025-03-16 20:05:59,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:05:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:05:59,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:05:59,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:05:59,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:05:59,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:05:59,418 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 20:05:59,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:05:59,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311214316] [2025-03-16 20:05:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311214316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:05:59,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:05:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:05:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258777302] [2025-03-16 20:05:59,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:05:59,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:05:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:05:59,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:05:59,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:05:59,421 INFO L87 Difference]: Start difference. First operand 4001 states and 6990 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:00,207 INFO L93 Difference]: Finished difference Result 7718 states and 13114 transitions. [2025-03-16 20:06:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:00,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:00,233 INFO L225 Difference]: With dead ends: 7718 [2025-03-16 20:06:00,233 INFO L226 Difference]: Without dead ends: 5857 [2025-03-16 20:06:00,240 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 20:06:00,241 INFO L435 NwaCegarLoop]: 4767 mSDtfsCounter, 5140 mSDsluCounter, 14365 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5161 SdHoareTripleChecker+Valid, 19132 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:00,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5161 Valid, 19132 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:06:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2025-03-16 20:06:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 5658. [2025-03-16 20:06:00,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5658 states, 5379 states have (on average 1.7215095742703104) internal successors, (9260), 5401 states have internal predecessors, (9260), 203 states have call successors, (203), 54 states have call predecessors, (203), 74 states have return successors, (267), 210 states have call predecessors, (267), 203 states have call successors, (267) [2025-03-16 20:06:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5658 states to 5658 states and 9730 transitions. [2025-03-16 20:06:00,403 INFO L78 Accepts]: Start accepts. Automaton has 5658 states and 9730 transitions. Word has length 171 [2025-03-16 20:06:00,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:00,403 INFO L471 AbstractCegarLoop]: Abstraction has 5658 states and 9730 transitions. [2025-03-16 20:06:00,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5658 states and 9730 transitions. [2025-03-16 20:06:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:00,407 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:00,407 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:00,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:06:00,408 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1369388595, now seen corresponding path program 1 times [2025-03-16 20:06:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144954381] [2025-03-16 20:06:00,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:00,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:00,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:00,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:00,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:00,583 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 20:06:00,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:00,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144954381] [2025-03-16 20:06:00,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144954381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:00,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:00,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:00,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302681545] [2025-03-16 20:06:00,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:00,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:00,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:00,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:00,586 INFO L87 Difference]: Start difference. First operand 5658 states and 9730 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:01,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:01,420 INFO L93 Difference]: Finished difference Result 13179 states and 22352 transitions. [2025-03-16 20:06:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:01,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:01,460 INFO L225 Difference]: With dead ends: 13179 [2025-03-16 20:06:01,460 INFO L226 Difference]: Without dead ends: 9661 [2025-03-16 20:06:01,467 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 20:06:01,468 INFO L435 NwaCegarLoop]: 4764 mSDtfsCounter, 5135 mSDsluCounter, 14356 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 19120 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:01,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5156 Valid, 19120 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:01,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9661 states. [2025-03-16 20:06:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9661 to 9377. [2025-03-16 20:06:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 8828 states have (on average 1.704123244222927) internal successors, (15044), 8896 states have internal predecessors, (15044), 379 states have call successors, (379), 102 states have call predecessors, (379), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:06:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 16058 transitions. [2025-03-16 20:06:01,744 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 16058 transitions. Word has length 171 [2025-03-16 20:06:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:01,745 INFO L471 AbstractCegarLoop]: Abstraction has 9377 states and 16058 transitions. [2025-03-16 20:06:01,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 16058 transitions. [2025-03-16 20:06:01,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:01,751 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:01,751 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:01,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:06:01,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:01,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash 991372302, now seen corresponding path program 1 times [2025-03-16 20:06:01,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:01,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452743578] [2025-03-16 20:06:01,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:01,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:01,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:01,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:01,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:01,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:01,882 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 20:06:01,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452743578] [2025-03-16 20:06:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452743578] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:01,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:01,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:01,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673189463] [2025-03-16 20:06:01,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:01,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:01,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:01,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:01,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:01,884 INFO L87 Difference]: Start difference. First operand 9377 states and 16058 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:02,341 INFO L93 Difference]: Finished difference Result 18440 states and 31818 transitions. [2025-03-16 20:06:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:02,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:02,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:02,469 INFO L225 Difference]: With dead ends: 18440 [2025-03-16 20:06:02,470 INFO L226 Difference]: Without dead ends: 11203 [2025-03-16 20:06:02,483 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 20:06:02,484 INFO L435 NwaCegarLoop]: 4422 mSDtfsCounter, 4790 mSDsluCounter, 8680 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4811 SdHoareTripleChecker+Valid, 13102 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:02,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4811 Valid, 13102 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:06:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11203 states. [2025-03-16 20:06:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11203 to 9377. [2025-03-16 20:06:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 8828 states have (on average 1.7021975532396918) internal successors, (15027), 8896 states have internal predecessors, (15027), 379 states have call successors, (379), 102 states have call predecessors, (379), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:06:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 16041 transitions. [2025-03-16 20:06:02,742 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 16041 transitions. Word has length 171 [2025-03-16 20:06:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:02,742 INFO L471 AbstractCegarLoop]: Abstraction has 9377 states and 16041 transitions. [2025-03-16 20:06:02,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 16041 transitions. [2025-03-16 20:06:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:02,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:02,748 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:02,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:06:02,748 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:02,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1426326099, now seen corresponding path program 1 times [2025-03-16 20:06:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:02,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351246142] [2025-03-16 20:06:02,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:02,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:02,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:02,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:02,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:02,873 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 20:06:02,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351246142] [2025-03-16 20:06:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351246142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:02,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:02,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:02,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074724906] [2025-03-16 20:06:02,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:02,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:02,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:02,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:02,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:02,876 INFO L87 Difference]: Start difference. First operand 9377 states and 16041 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:03,444 INFO L93 Difference]: Finished difference Result 18357 states and 31618 transitions. [2025-03-16 20:06:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:03,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:03,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:03,521 INFO L225 Difference]: With dead ends: 18357 [2025-03-16 20:06:03,525 INFO L226 Difference]: Without dead ends: 11120 [2025-03-16 20:06:03,566 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 20:06:03,567 INFO L435 NwaCegarLoop]: 4419 mSDtfsCounter, 4787 mSDsluCounter, 8675 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4808 SdHoareTripleChecker+Valid, 13094 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:03,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4808 Valid, 13094 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:06:03,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11120 states. [2025-03-16 20:06:03,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11120 to 9377. [2025-03-16 20:06:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9377 states, 8828 states have (on average 1.7002718622564568) internal successors, (15010), 8896 states have internal predecessors, (15010), 379 states have call successors, (379), 102 states have call predecessors, (379), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 20:06:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9377 states to 9377 states and 16024 transitions. [2025-03-16 20:06:04,026 INFO L78 Accepts]: Start accepts. Automaton has 9377 states and 16024 transitions. Word has length 171 [2025-03-16 20:06:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:04,028 INFO L471 AbstractCegarLoop]: Abstraction has 9377 states and 16024 transitions. [2025-03-16 20:06:04,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:04,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9377 states and 16024 transitions. [2025-03-16 20:06:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:04,035 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:04,035 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:04,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:06:04,036 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:04,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1504316370, now seen corresponding path program 1 times [2025-03-16 20:06:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:04,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782207204] [2025-03-16 20:06:04,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:04,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:04,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:04,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:04,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:04,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:04,205 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 20:06:04,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:04,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782207204] [2025-03-16 20:06:04,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782207204] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:04,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:04,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:04,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318892365] [2025-03-16 20:06:04,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:04,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:04,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:04,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:04,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:04,206 INFO L87 Difference]: Start difference. First operand 9377 states and 16024 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:05,272 INFO L93 Difference]: Finished difference Result 25462 states and 43700 transitions. [2025-03-16 20:06:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:05,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:05,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:05,340 INFO L225 Difference]: With dead ends: 25462 [2025-03-16 20:06:05,340 INFO L226 Difference]: Without dead ends: 18225 [2025-03-16 20:06:05,368 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 20:06:05,369 INFO L435 NwaCegarLoop]: 4751 mSDtfsCounter, 5114 mSDsluCounter, 14319 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5135 SdHoareTripleChecker+Valid, 19070 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:05,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5135 Valid, 19070 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:06:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18225 states. [2025-03-16 20:06:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18225 to 17814. [2025-03-16 20:06:05,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 16671 states have (on average 1.7019974806550298) internal successors, (28374), 16885 states have internal predecessors, (28374), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:06:05,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 30860 transitions. [2025-03-16 20:06:05,886 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 30860 transitions. Word has length 171 [2025-03-16 20:06:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:05,887 INFO L471 AbstractCegarLoop]: Abstraction has 17814 states and 30860 transitions. [2025-03-16 20:06:05,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 30860 transitions. [2025-03-16 20:06:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:05,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:05,895 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:05,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:06:05,895 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:05,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash 848472461, now seen corresponding path program 1 times [2025-03-16 20:06:05,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:05,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159864408] [2025-03-16 20:06:05,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:05,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:05,906 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:05,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:05,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:05,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:06,118 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 20:06:06,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:06,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159864408] [2025-03-16 20:06:06,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159864408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:06,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:06,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494969092] [2025-03-16 20:06:06,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:06,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:06,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:06,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:06,121 INFO L87 Difference]: Start difference. First operand 17814 states and 30860 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:06,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:06,976 INFO L93 Difference]: Finished difference Result 38143 states and 67394 transitions. [2025-03-16 20:06:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:06,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:06,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:07,046 INFO L225 Difference]: With dead ends: 38143 [2025-03-16 20:06:07,046 INFO L226 Difference]: Without dead ends: 22469 [2025-03-16 20:06:07,075 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 20:06:07,075 INFO L435 NwaCegarLoop]: 4414 mSDtfsCounter, 4783 mSDsluCounter, 8666 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4804 SdHoareTripleChecker+Valid, 13080 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:07,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4804 Valid, 13080 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:07,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22469 states. [2025-03-16 20:06:07,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22469 to 17814. [2025-03-16 20:06:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 16671 states have (on average 1.7000179953212164) internal successors, (28341), 16885 states have internal predecessors, (28341), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:06:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 30827 transitions. [2025-03-16 20:06:07,625 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 30827 transitions. Word has length 171 [2025-03-16 20:06:07,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:07,626 INFO L471 AbstractCegarLoop]: Abstraction has 17814 states and 30827 transitions. [2025-03-16 20:06:07,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:07,626 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 30827 transitions. [2025-03-16 20:06:07,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:07,632 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:07,633 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:07,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:06:07,633 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:07,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash -45462450, now seen corresponding path program 1 times [2025-03-16 20:06:07,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:07,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650978317] [2025-03-16 20:06:07,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:07,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:07,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:07,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:07,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:07,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:07,833 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 20:06:07,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:07,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650978317] [2025-03-16 20:06:07,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650978317] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:07,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:07,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:07,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006968462] [2025-03-16 20:06:07,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:07,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:07,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:07,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:07,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:07,838 INFO L87 Difference]: Start difference. First operand 17814 states and 30827 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:08,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:08,881 INFO L93 Difference]: Finished difference Result 37653 states and 66348 transitions. [2025-03-16 20:06:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:08,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:08,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:08,938 INFO L225 Difference]: With dead ends: 37653 [2025-03-16 20:06:08,938 INFO L226 Difference]: Without dead ends: 21979 [2025-03-16 20:06:08,964 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 20:06:08,965 INFO L435 NwaCegarLoop]: 4409 mSDtfsCounter, 4779 mSDsluCounter, 8657 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4800 SdHoareTripleChecker+Valid, 13066 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:08,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4800 Valid, 13066 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:06:08,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21979 states. [2025-03-16 20:06:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21979 to 17814. [2025-03-16 20:06:09,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 16671 states have (on average 1.6980385099874034) internal successors, (28308), 16885 states have internal predecessors, (28308), 731 states have call successors, (731), 198 states have call predecessors, (731), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 20:06:09,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 30794 transitions. [2025-03-16 20:06:09,518 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 30794 transitions. Word has length 171 [2025-03-16 20:06:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:09,520 INFO L471 AbstractCegarLoop]: Abstraction has 17814 states and 30794 transitions. [2025-03-16 20:06:09,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:09,521 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 30794 transitions. [2025-03-16 20:06:09,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:09,528 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:09,528 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:09,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:06:09,528 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:09,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash -10638513, now seen corresponding path program 1 times [2025-03-16 20:06:09,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:09,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561649207] [2025-03-16 20:06:09,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:09,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:09,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:09,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:09,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:09,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:09,653 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 20:06:09,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:09,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561649207] [2025-03-16 20:06:09,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561649207] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:09,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:09,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:09,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850839082] [2025-03-16 20:06:09,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:09,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:09,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:09,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:09,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:09,655 INFO L87 Difference]: Start difference. First operand 17814 states and 30794 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:11,149 INFO L93 Difference]: Finished difference Result 53221 states and 93940 transitions. [2025-03-16 20:06:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:11,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:11,249 INFO L225 Difference]: With dead ends: 53221 [2025-03-16 20:06:11,249 INFO L226 Difference]: Without dead ends: 37547 [2025-03-16 20:06:11,291 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 20:06:11,292 INFO L435 NwaCegarLoop]: 4734 mSDtfsCounter, 5090 mSDsluCounter, 14272 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5111 SdHoareTripleChecker+Valid, 19006 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:11,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5111 Valid, 19006 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 20:06:11,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37547 states. [2025-03-16 20:06:12,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37547 to 36956. [2025-03-16 20:06:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36956 states, 34463 states have (on average 1.7121550648521602) internal successors, (59006), 35131 states have internal predecessors, (59006), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 1056 states have return successors, (5531), 1498 states have call predecessors, (5531), 1435 states have call successors, (5531) [2025-03-16 20:06:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36956 states to 36956 states and 65972 transitions. [2025-03-16 20:06:12,713 INFO L78 Accepts]: Start accepts. Automaton has 36956 states and 65972 transitions. Word has length 171 [2025-03-16 20:06:12,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:12,713 INFO L471 AbstractCegarLoop]: Abstraction has 36956 states and 65972 transitions. [2025-03-16 20:06:12,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:12,714 INFO L276 IsEmpty]: Start isEmpty. Operand 36956 states and 65972 transitions. [2025-03-16 20:06:12,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:12,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:12,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:12,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:06:12,725 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:12,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1949177810, now seen corresponding path program 1 times [2025-03-16 20:06:12,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:12,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718825641] [2025-03-16 20:06:12,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:12,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:12,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:12,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:12,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:12,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:12,829 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 20:06:12,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:12,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718825641] [2025-03-16 20:06:12,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718825641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:12,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:12,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087622684] [2025-03-16 20:06:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:12,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:12,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:12,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:12,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:12,831 INFO L87 Difference]: Start difference. First operand 36956 states and 65972 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:15,340 INFO L93 Difference]: Finished difference Result 123387 states and 227689 transitions. [2025-03-16 20:06:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:15,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:15,735 INFO L225 Difference]: With dead ends: 123387 [2025-03-16 20:06:15,735 INFO L226 Difference]: Without dead ends: 88571 [2025-03-16 20:06:15,843 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 20:06:15,845 INFO L435 NwaCegarLoop]: 4729 mSDtfsCounter, 5447 mSDsluCounter, 14252 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5482 SdHoareTripleChecker+Valid, 18981 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:15,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5482 Valid, 18981 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:15,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88571 states. [2025-03-16 20:06:19,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88571 to 82095. [2025-03-16 20:06:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82095 states, 76480 states have (on average 1.7374215481171549) internal successors, (132878), 78542 states have internal predecessors, (132878), 2779 states have call successors, (2779), 774 states have call predecessors, (2779), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 20:06:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82095 states to 82095 states and 154820 transitions. [2025-03-16 20:06:19,360 INFO L78 Accepts]: Start accepts. Automaton has 82095 states and 154820 transitions. Word has length 171 [2025-03-16 20:06:19,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:19,360 INFO L471 AbstractCegarLoop]: Abstraction has 82095 states and 154820 transitions. [2025-03-16 20:06:19,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 82095 states and 154820 transitions. [2025-03-16 20:06:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:19,377 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:19,378 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:19,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:06:19,378 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:19,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 897782639, now seen corresponding path program 1 times [2025-03-16 20:06:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70630980] [2025-03-16 20:06:19,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:19,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:19,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:19,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:19,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:19,456 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 20:06:19,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:19,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70630980] [2025-03-16 20:06:19,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70630980] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:19,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:19,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798287194] [2025-03-16 20:06:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:19,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:19,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:19,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:19,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:19,458 INFO L87 Difference]: Start difference. First operand 82095 states and 154820 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:23,235 INFO L93 Difference]: Finished difference Result 192696 states and 377016 transitions. [2025-03-16 20:06:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:23,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:23,787 INFO L225 Difference]: With dead ends: 192696 [2025-03-16 20:06:23,787 INFO L226 Difference]: Without dead ends: 112741 [2025-03-16 20:06:23,924 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 20:06:23,925 INFO L435 NwaCegarLoop]: 4402 mSDtfsCounter, 4772 mSDsluCounter, 8642 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4793 SdHoareTripleChecker+Valid, 13044 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:23,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4793 Valid, 13044 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:06:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112741 states. [2025-03-16 20:06:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112741 to 82095. [2025-03-16 20:06:27,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82095 states, 76480 states have (on average 1.7357348326359832) internal successors, (132749), 78542 states have internal predecessors, (132749), 2779 states have call successors, (2779), 774 states have call predecessors, (2779), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 20:06:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82095 states to 82095 states and 154691 transitions. [2025-03-16 20:06:27,700 INFO L78 Accepts]: Start accepts. Automaton has 82095 states and 154691 transitions. Word has length 171 [2025-03-16 20:06:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:27,700 INFO L471 AbstractCegarLoop]: Abstraction has 82095 states and 154691 transitions. [2025-03-16 20:06:27,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 82095 states and 154691 transitions. [2025-03-16 20:06:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:27,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:27,718 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:27,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 20:06:27,718 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:27,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2058421234, now seen corresponding path program 1 times [2025-03-16 20:06:27,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:27,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949954252] [2025-03-16 20:06:27,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:27,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:27,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:27,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:27,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:27,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:27,805 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 20:06:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949954252] [2025-03-16 20:06:27,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949954252] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:27,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:27,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:27,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205196566] [2025-03-16 20:06:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:27,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:27,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:27,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:27,807 INFO L87 Difference]: Start difference. First operand 82095 states and 154691 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:33,572 INFO L93 Difference]: Finished difference Result 280710 states and 556580 transitions. [2025-03-16 20:06:33,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:33,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 171 [2025-03-16 20:06:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:34,485 INFO L225 Difference]: With dead ends: 280710 [2025-03-16 20:06:34,485 INFO L226 Difference]: Without dead ends: 200755 [2025-03-16 20:06:34,751 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 20:06:34,751 INFO L435 NwaCegarLoop]: 4721 mSDtfsCounter, 5380 mSDsluCounter, 14229 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5415 SdHoareTripleChecker+Valid, 18950 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:34,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5415 Valid, 18950 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:06:34,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200755 states. [2025-03-16 20:06:43,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200755 to 189677. [2025-03-16 20:06:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189677 states, 176424 states have (on average 1.761614066113454) internal successors, (310791), 182732 states have internal predecessors, (310791), 5403 states have call successors, (5403), 1542 states have call predecessors, (5403), 7848 states have return successors, (70939), 5658 states have call predecessors, (70939), 5403 states have call successors, (70939) [2025-03-16 20:06:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189677 states to 189677 states and 387133 transitions. [2025-03-16 20:06:45,193 INFO L78 Accepts]: Start accepts. Automaton has 189677 states and 387133 transitions. Word has length 171 [2025-03-16 20:06:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:45,193 INFO L471 AbstractCegarLoop]: Abstraction has 189677 states and 387133 transitions. [2025-03-16 20:06:45,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 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 20:06:45,193 INFO L276 IsEmpty]: Start isEmpty. Operand 189677 states and 387133 transitions. [2025-03-16 20:06:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-16 20:06:45,225 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:45,226 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:45,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 20:06:45,226 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:45,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:45,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1876687985, now seen corresponding path program 1 times [2025-03-16 20:06:45,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:45,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988100173] [2025-03-16 20:06:45,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:45,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:45,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-16 20:06:45,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-16 20:06:45,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:45,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:45,300 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 20:06:45,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:45,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988100173] [2025-03-16 20:06:45,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988100173] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:45,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:45,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:45,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729990246] [2025-03-16 20:06:45,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:45,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:45,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:45,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:45,303 INFO L87 Difference]: Start difference. First operand 189677 states and 387133 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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)