./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.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 4859a4cdb98a3caca502aed15b30b6d563e2037c3c786a209b1853d003f6e66c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:58:14,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:58:14,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:58:14,098 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:58:14,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:58:14,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:58:14,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:58:14,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:58:14,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:58:14,122 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:58:14,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:58:14,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:58:14,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:58:14,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:58:14,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:58:14,124 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:58:14,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:58:14,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:58:14,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:58:14,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:58:14,125 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 -> 4859a4cdb98a3caca502aed15b30b6d563e2037c3c786a209b1853d003f6e66c [2025-03-16 19:58:14,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:58:14,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:58:14,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:58:14,392 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:58:14,392 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:58:14,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c [2025-03-16 19:58:15,574 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098428293/b23f164fc4e440ee9078b83353af12d2/FLAGfe237b993 [2025-03-16 19:58:16,220 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:58:16,222 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c [2025-03-16 19:58:16,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098428293/b23f164fc4e440ee9078b83353af12d2/FLAGfe237b993 [2025-03-16 19:58:16,651 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/098428293/b23f164fc4e440ee9078b83353af12d2 [2025-03-16 19:58:16,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:58:16,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:58:16,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:58:16,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:58:16,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:58:16,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:58:16" (1/1) ... [2025-03-16 19:58:16,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75dfd6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:16, skipping insertion in model container [2025-03-16 19:58:16,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:58:16" (1/1) ... [2025-03-16 19:58:16,801 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:58:17,918 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c[378560,378573] [2025-03-16 19:58:17,949 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c[383339,383352] [2025-03-16 19:58:18,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:58:18,252 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:58:18,730 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c[378560,378573] [2025-03-16 19:58:18,735 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c[383339,383352] [2025-03-16 19:58:18,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:58:18,814 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:58:18,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18 WrapperNode [2025-03-16 19:58:18,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:58:18,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:58:18,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:58:18,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:58:18,822 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:18,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,260 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13246 [2025-03-16 19:58:19,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:58:19,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:58:19,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:58:19,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:58:19,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,297 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,358 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:58:19,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,490 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:58:19,602 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:58:19,602 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:58:19,602 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:58:19,603 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (1/1) ... [2025-03-16 19:58:19,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:58:19,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:58:19,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:58:19,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:58:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:58:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:58:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:58:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-03-16 19:58:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:58:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:58:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:58:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:58:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:58:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:58:19,812 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:58:19,814 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:58:25,997 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:58:25,997 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:58:25,998 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:58:25,998 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:58:25,998 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:58:25,998 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:58:25,998 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:58:26,213 INFO L? ?]: Removed 1749 outVars from TransFormulas that were not future-live. [2025-03-16 19:58:26,213 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:58:26,269 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:58:26,271 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:58:26,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:58:26 BoogieIcfgContainer [2025-03-16 19:58:26,271 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:58:26,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:58:26,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:58:26,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:58:26,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:58:16" (1/3) ... [2025-03-16 19:58:26,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7c6777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:58:26, skipping insertion in model container [2025-03-16 19:58:26,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:18" (2/3) ... [2025-03-16 19:58:26,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7c6777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:58:26, skipping insertion in model container [2025-03-16 19:58:26,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:58:26" (3/3) ... [2025-03-16 19:58:26,279 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.15.cil.c [2025-03-16 19:58:26,291 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:58:26,294 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.15.cil.c that has 8 procedures, 2515 locations, 1 initial locations, 17 loop locations, and 2 error locations. [2025-03-16 19:58:26,403 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:58:26,414 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;@2249c4cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:58:26,415 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:58:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2477 states have (on average 1.861929753734356) internal successors, (4612), 2481 states have internal predecessors, (4612), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 19:58:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:26,446 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:26,447 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, 1] [2025-03-16 19:58:26,447 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:26,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1516679337, now seen corresponding path program 1 times [2025-03-16 19:58:26,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:26,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667513458] [2025-03-16 19:58:26,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:26,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:26,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:26,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:26,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:26,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:27,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:27,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667513458] [2025-03-16 19:58:27,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667513458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:27,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:27,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:27,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373316599] [2025-03-16 19:58:27,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:27,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:27,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:27,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:27,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:27,268 INFO L87 Difference]: Start difference. First operand has 2515 states, 2477 states have (on average 1.861929753734356) internal successors, (4612), 2481 states have internal predecessors, (4612), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:28,067 INFO L93 Difference]: Finished difference Result 5433 states and 10021 transitions. [2025-03-16 19:58:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:58:28,070 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:28,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:28,104 INFO L225 Difference]: With dead ends: 5433 [2025-03-16 19:58:28,105 INFO L226 Difference]: Without dead ends: 2929 [2025-03-16 19:58:28,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:28,121 INFO L435 NwaCegarLoop]: 4460 mSDtfsCounter, 5165 mSDsluCounter, 9199 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 13659 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:28,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 13659 Invalid, 698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:58:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2025-03-16 19:58:28,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2896. [2025-03-16 19:58:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2830 states have (on average 1.8063604240282685) internal successors, (5112), 2834 states have internal predecessors, (5112), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 19:58:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 5213 transitions. [2025-03-16 19:58:28,273 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 5213 transitions. Word has length 172 [2025-03-16 19:58:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:28,273 INFO L471 AbstractCegarLoop]: Abstraction has 2896 states and 5213 transitions. [2025-03-16 19:58:28,274 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 5213 transitions. [2025-03-16 19:58:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:28,282 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:28,282 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, 1] [2025-03-16 19:58:28,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:58:28,283 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:28,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2019231975, now seen corresponding path program 1 times [2025-03-16 19:58:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:28,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77516289] [2025-03-16 19:58:28,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:28,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:28,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:28,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:28,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77516289] [2025-03-16 19:58:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77516289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:28,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:28,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:28,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755291701] [2025-03-16 19:58:28,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:28,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:28,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:28,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:28,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:28,521 INFO L87 Difference]: Start difference. First operand 2896 states and 5213 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:28,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:28,910 INFO L93 Difference]: Finished difference Result 3736 states and 6599 transitions. [2025-03-16 19:58:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:28,911 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:28,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:28,924 INFO L225 Difference]: With dead ends: 3736 [2025-03-16 19:58:28,924 INFO L226 Difference]: Without dead ends: 2980 [2025-03-16 19:58:28,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:28,928 INFO L435 NwaCegarLoop]: 4442 mSDtfsCounter, 4807 mSDsluCounter, 8715 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 13157 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:28,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4828 Valid, 13157 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:58:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2025-03-16 19:58:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 2896. [2025-03-16 19:58:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2830 states have (on average 1.8056537102473498) internal successors, (5110), 2834 states have internal predecessors, (5110), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2025-03-16 19:58:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 5211 transitions. [2025-03-16 19:58:29,070 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 5211 transitions. Word has length 172 [2025-03-16 19:58:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:29,071 INFO L471 AbstractCegarLoop]: Abstraction has 2896 states and 5211 transitions. [2025-03-16 19:58:29,071 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 5211 transitions. [2025-03-16 19:58:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:29,073 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:29,073 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, 1] [2025-03-16 19:58:29,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:58:29,073 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:29,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:29,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2082804120, now seen corresponding path program 1 times [2025-03-16 19:58:29,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:29,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732199819] [2025-03-16 19:58:29,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:29,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:29,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:29,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:29,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:29,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:29,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:29,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732199819] [2025-03-16 19:58:29,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732199819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:29,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:29,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:29,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931476203] [2025-03-16 19:58:29,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:29,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:29,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:29,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:29,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:29,309 INFO L87 Difference]: Start difference. First operand 2896 states and 5211 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:30,051 INFO L93 Difference]: Finished difference Result 4151 states and 7270 transitions. [2025-03-16 19:58:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:30,051 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:30,066 INFO L225 Difference]: With dead ends: 4151 [2025-03-16 19:58:30,066 INFO L226 Difference]: Without dead ends: 3395 [2025-03-16 19:58:30,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:30,070 INFO L435 NwaCegarLoop]: 4792 mSDtfsCounter, 5162 mSDsluCounter, 14433 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5183 SdHoareTripleChecker+Valid, 19225 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:30,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5183 Valid, 19225 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:58:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2025-03-16 19:58:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3254. [2025-03-16 19:58:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 3159 states have (on average 1.783792339347895) internal successors, (5635), 3164 states have internal predecessors, (5635), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (75), 72 states have call predecessors, (75), 71 states have call successors, (75) [2025-03-16 19:58:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 5783 transitions. [2025-03-16 19:58:30,153 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 5783 transitions. Word has length 172 [2025-03-16 19:58:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:30,153 INFO L471 AbstractCegarLoop]: Abstraction has 3254 states and 5783 transitions. [2025-03-16 19:58:30,153 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 5783 transitions. [2025-03-16 19:58:30,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:30,155 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:30,155 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, 1] [2025-03-16 19:58:30,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:58:30,155 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:30,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2079839431, now seen corresponding path program 1 times [2025-03-16 19:58:30,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:30,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447202459] [2025-03-16 19:58:30,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:30,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:30,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:30,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:30,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:30,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447202459] [2025-03-16 19:58:30,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447202459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:30,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:30,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:30,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830039376] [2025-03-16 19:58:30,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:30,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:30,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:30,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:30,330 INFO L87 Difference]: Start difference. First operand 3254 states and 5783 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:31,179 INFO L93 Difference]: Finished difference Result 5290 states and 9115 transitions. [2025-03-16 19:58:31,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:31,180 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:31,199 INFO L225 Difference]: With dead ends: 5290 [2025-03-16 19:58:31,199 INFO L226 Difference]: Without dead ends: 4176 [2025-03-16 19:58:31,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:31,206 INFO L435 NwaCegarLoop]: 4784 mSDtfsCounter, 5154 mSDsluCounter, 14411 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5175 SdHoareTripleChecker+Valid, 19195 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:31,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5175 Valid, 19195 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 19:58:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2025-03-16 19:58:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 4018. [2025-03-16 19:58:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4018 states, 3863 states have (on average 1.753559409785141) internal successors, (6774), 3872 states have internal predecessors, (6774), 117 states have call successors, (117), 31 states have call predecessors, (117), 36 states have return successors, (131), 118 states have call predecessors, (131), 115 states have call successors, (131) [2025-03-16 19:58:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4018 states to 4018 states and 7022 transitions. [2025-03-16 19:58:31,315 INFO L78 Accepts]: Start accepts. Automaton has 4018 states and 7022 transitions. Word has length 172 [2025-03-16 19:58:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:31,315 INFO L471 AbstractCegarLoop]: Abstraction has 4018 states and 7022 transitions. [2025-03-16 19:58:31,315 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4018 states and 7022 transitions. [2025-03-16 19:58:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:31,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:31,318 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, 1] [2025-03-16 19:58:31,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:58:31,318 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:31,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1418249958, now seen corresponding path program 1 times [2025-03-16 19:58:31,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:31,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033191856] [2025-03-16 19:58:31,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:31,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:31,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:31,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:31,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:31,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:31,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033191856] [2025-03-16 19:58:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033191856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:31,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:31,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:31,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725979513] [2025-03-16 19:58:31,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:31,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:31,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:31,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:31,479 INFO L87 Difference]: Start difference. First operand 4018 states and 7022 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:32,191 INFO L93 Difference]: Finished difference Result 7766 states and 13204 transitions. [2025-03-16 19:58:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:32,191 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:32,212 INFO L225 Difference]: With dead ends: 7766 [2025-03-16 19:58:32,213 INFO L226 Difference]: Without dead ends: 5888 [2025-03-16 19:58:32,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:32,220 INFO L435 NwaCegarLoop]: 4781 mSDtfsCounter, 5149 mSDsluCounter, 14402 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 19183 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:32,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5170 Valid, 19183 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:58:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2025-03-16 19:58:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5687. [2025-03-16 19:58:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5687 states, 5406 states have (on average 1.7229004809470958) internal successors, (9314), 5429 states have internal predecessors, (9314), 205 states have call successors, (205), 55 states have call predecessors, (205), 74 states have return successors, (267), 210 states have call predecessors, (267), 203 states have call successors, (267) [2025-03-16 19:58:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5687 states to 5687 states and 9786 transitions. [2025-03-16 19:58:32,402 INFO L78 Accepts]: Start accepts. Automaton has 5687 states and 9786 transitions. Word has length 172 [2025-03-16 19:58:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:32,402 INFO L471 AbstractCegarLoop]: Abstraction has 5687 states and 9786 transitions. [2025-03-16 19:58:32,402 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5687 states and 9786 transitions. [2025-03-16 19:58:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:32,408 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:32,408 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, 1] [2025-03-16 19:58:32,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:58:32,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:32,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1928227609, now seen corresponding path program 1 times [2025-03-16 19:58:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:32,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886360232] [2025-03-16 19:58:32,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:32,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:32,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:32,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:32,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:32,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:32,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886360232] [2025-03-16 19:58:32,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886360232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:32,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:32,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:32,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55039970] [2025-03-16 19:58:32,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:32,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:32,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:32,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:32,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:32,549 INFO L87 Difference]: Start difference. First operand 5687 states and 9786 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:33,310 INFO L93 Difference]: Finished difference Result 13263 states and 22514 transitions. [2025-03-16 19:58:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:33,315 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:33,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:33,352 INFO L225 Difference]: With dead ends: 13263 [2025-03-16 19:58:33,352 INFO L226 Difference]: Without dead ends: 9716 [2025-03-16 19:58:33,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:33,367 INFO L435 NwaCegarLoop]: 4778 mSDtfsCounter, 5144 mSDsluCounter, 14393 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5165 SdHoareTripleChecker+Valid, 19171 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:33,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5165 Valid, 19171 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:58:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9716 states. [2025-03-16 19:58:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9716 to 9430. [2025-03-16 19:58:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7058227277846605) internal successors, (15146), 8948 states have internal predecessors, (15146), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 19:58:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16162 transitions. [2025-03-16 19:58:33,666 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16162 transitions. Word has length 172 [2025-03-16 19:58:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:33,666 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16162 transitions. [2025-03-16 19:58:33,666 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16162 transitions. [2025-03-16 19:58:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:33,671 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:33,671 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, 1] [2025-03-16 19:58:33,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:58:33,672 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:33,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1759083834, now seen corresponding path program 1 times [2025-03-16 19:58:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:33,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41267919] [2025-03-16 19:58:33,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:33,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:33,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:33,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:33,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:33,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:33,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41267919] [2025-03-16 19:58:33,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41267919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:33,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:33,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125865025] [2025-03-16 19:58:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:33,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:33,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:33,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:33,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:33,774 INFO L87 Difference]: Start difference. First operand 9430 states and 16162 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:34,201 INFO L93 Difference]: Finished difference Result 18546 states and 32026 transitions. [2025-03-16 19:58:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:34,202 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:34,237 INFO L225 Difference]: With dead ends: 18546 [2025-03-16 19:58:34,237 INFO L226 Difference]: Without dead ends: 11256 [2025-03-16 19:58:34,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:34,260 INFO L435 NwaCegarLoop]: 4429 mSDtfsCounter, 4799 mSDsluCounter, 8690 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 13119 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:34,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4820 Valid, 13119 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:58:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11256 states. [2025-03-16 19:58:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11256 to 9430. [2025-03-16 19:58:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7039080977587566) internal successors, (15129), 8948 states have internal predecessors, (15129), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 19:58:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16145 transitions. [2025-03-16 19:58:34,803 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16145 transitions. Word has length 172 [2025-03-16 19:58:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:34,804 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16145 transitions. [2025-03-16 19:58:34,804 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16145 transitions. [2025-03-16 19:58:34,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:34,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:34,814 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, 1] [2025-03-16 19:58:34,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:58:34,814 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:34,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:34,815 INFO L85 PathProgramCache]: Analyzing trace with hash 601677063, now seen corresponding path program 1 times [2025-03-16 19:58:34,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:34,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426906346] [2025-03-16 19:58:34,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:34,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:34,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:34,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:34,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:34,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426906346] [2025-03-16 19:58:34,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426906346] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:34,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:34,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:34,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561462908] [2025-03-16 19:58:34,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:34,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:34,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:34,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:34,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:34,938 INFO L87 Difference]: Start difference. First operand 9430 states and 16145 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:35,426 INFO L93 Difference]: Finished difference Result 18463 states and 31826 transitions. [2025-03-16 19:58:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:35,426 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:35,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:35,457 INFO L225 Difference]: With dead ends: 18463 [2025-03-16 19:58:35,458 INFO L226 Difference]: Without dead ends: 11173 [2025-03-16 19:58:35,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:35,474 INFO L435 NwaCegarLoop]: 4426 mSDtfsCounter, 4796 mSDsluCounter, 8685 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 13111 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:35,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4817 Valid, 13111 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:58:35,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11173 states. [2025-03-16 19:58:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11173 to 9430. [2025-03-16 19:58:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9430 states, 8879 states have (on average 1.7019934677328528) internal successors, (15112), 8948 states have internal predecessors, (15112), 381 states have call successors, (381), 103 states have call predecessors, (381), 168 states have return successors, (635), 394 states have call predecessors, (635), 379 states have call successors, (635) [2025-03-16 19:58:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9430 states to 9430 states and 16128 transitions. [2025-03-16 19:58:35,724 INFO L78 Accepts]: Start accepts. Automaton has 9430 states and 16128 transitions. Word has length 172 [2025-03-16 19:58:35,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:35,724 INFO L471 AbstractCegarLoop]: Abstraction has 9430 states and 16128 transitions. [2025-03-16 19:58:35,724 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9430 states and 16128 transitions. [2025-03-16 19:58:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:35,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:35,728 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, 1] [2025-03-16 19:58:35,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:58:35,728 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:35,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:35,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1816021338, now seen corresponding path program 1 times [2025-03-16 19:58:35,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:35,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953547636] [2025-03-16 19:58:35,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:35,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:35,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:35,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:35,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:35,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:35,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953547636] [2025-03-16 19:58:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953547636] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476838221] [2025-03-16 19:58:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:35,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:35,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:35,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:35,844 INFO L87 Difference]: Start difference. First operand 9430 states and 16128 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:36,975 INFO L93 Difference]: Finished difference Result 25618 states and 44006 transitions. [2025-03-16 19:58:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:36,976 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:37,041 INFO L225 Difference]: With dead ends: 25618 [2025-03-16 19:58:37,041 INFO L226 Difference]: Without dead ends: 18328 [2025-03-16 19:58:37,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:37,072 INFO L435 NwaCegarLoop]: 4765 mSDtfsCounter, 5123 mSDsluCounter, 14356 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 19121 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:37,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5144 Valid, 19121 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:58:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18328 states. [2025-03-16 19:58:37,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18328 to 17915. [2025-03-16 19:58:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.7037567084078713) internal successors, (28572), 16985 states have internal predecessors, (28572), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 19:58:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 31060 transitions. [2025-03-16 19:58:37,650 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 31060 transitions. Word has length 172 [2025-03-16 19:58:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:37,650 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 31060 transitions. [2025-03-16 19:58:37,650 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 31060 transitions. [2025-03-16 19:58:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:37,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:37,658 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, 1] [2025-03-16 19:58:37,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:58:37,659 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:37,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1894011609, now seen corresponding path program 1 times [2025-03-16 19:58:37,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:37,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183828324] [2025-03-16 19:58:37,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:37,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:37,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:37,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:37,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:37,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:37,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183828324] [2025-03-16 19:58:37,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183828324] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:37,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:37,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012177072] [2025-03-16 19:58:37,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:37,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:37,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:37,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:37,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:37,755 INFO L87 Difference]: Start difference. First operand 17915 states and 31060 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:38,392 INFO L93 Difference]: Finished difference Result 38345 states and 67794 transitions. [2025-03-16 19:58:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:38,393 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:38,458 INFO L225 Difference]: With dead ends: 38345 [2025-03-16 19:58:38,458 INFO L226 Difference]: Without dead ends: 22570 [2025-03-16 19:58:38,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:38,485 INFO L435 NwaCegarLoop]: 4421 mSDtfsCounter, 4792 mSDsluCounter, 8676 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 13097 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:38,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4813 Valid, 13097 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:58:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22570 states. [2025-03-16 19:58:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22570 to 17915. [2025-03-16 19:58:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.701788908765653) internal successors, (28539), 16985 states have internal predecessors, (28539), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 19:58:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 31027 transitions. [2025-03-16 19:58:38,989 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 31027 transitions. Word has length 172 [2025-03-16 19:58:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:38,990 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 31027 transitions. [2025-03-16 19:58:38,990 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 31027 transitions. [2025-03-16 19:58:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:38,996 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:38,997 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, 1] [2025-03-16 19:58:38,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:58:38,997 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:38,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash 458777222, now seen corresponding path program 1 times [2025-03-16 19:58:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:38,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155971225] [2025-03-16 19:58:38,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:38,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:39,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:39,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:39,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:39,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:39,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:39,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155971225] [2025-03-16 19:58:39,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155971225] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:39,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:39,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:39,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727284540] [2025-03-16 19:58:39,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:39,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:39,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:39,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:39,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:39,138 INFO L87 Difference]: Start difference. First operand 17915 states and 31027 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:39,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:39,743 INFO L93 Difference]: Finished difference Result 37855 states and 66748 transitions. [2025-03-16 19:58:39,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:39,744 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:39,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:39,805 INFO L225 Difference]: With dead ends: 37855 [2025-03-16 19:58:39,805 INFO L226 Difference]: Without dead ends: 22080 [2025-03-16 19:58:39,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:39,841 INFO L435 NwaCegarLoop]: 4416 mSDtfsCounter, 4788 mSDsluCounter, 8667 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 13083 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:39,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 13083 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:58:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22080 states. [2025-03-16 19:58:40,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22080 to 17915. [2025-03-16 19:58:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17915 states, 16770 states have (on average 1.6998211091234348) internal successors, (28506), 16985 states have internal predecessors, (28506), 733 states have call successors, (733), 199 states have call predecessors, (733), 410 states have return successors, (1755), 762 states have call predecessors, (1755), 731 states have call successors, (1755) [2025-03-16 19:58:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17915 states to 17915 states and 30994 transitions. [2025-03-16 19:58:40,749 INFO L78 Accepts]: Start accepts. Automaton has 17915 states and 30994 transitions. Word has length 172 [2025-03-16 19:58:40,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:40,751 INFO L471 AbstractCegarLoop]: Abstraction has 17915 states and 30994 transitions. [2025-03-16 19:58:40,751 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:40,751 INFO L276 IsEmpty]: Start isEmpty. Operand 17915 states and 30994 transitions. [2025-03-16 19:58:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:40,759 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:40,759 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, 1] [2025-03-16 19:58:40,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:58:40,760 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:40,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1538319269, now seen corresponding path program 1 times [2025-03-16 19:58:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:40,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165264085] [2025-03-16 19:58:40,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:40,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:40,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:40,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:40,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:40,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165264085] [2025-03-16 19:58:40,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165264085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:40,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:40,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:40,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258005297] [2025-03-16 19:58:40,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:40,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:40,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:40,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:40,910 INFO L87 Difference]: Start difference. First operand 17915 states and 30994 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:42,287 INFO L93 Difference]: Finished difference Result 53521 states and 94534 transitions. [2025-03-16 19:58:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:42,287 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:42,406 INFO L225 Difference]: With dead ends: 53521 [2025-03-16 19:58:42,406 INFO L226 Difference]: Without dead ends: 37746 [2025-03-16 19:58:42,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:42,451 INFO L435 NwaCegarLoop]: 4748 mSDtfsCounter, 5099 mSDsluCounter, 14309 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5120 SdHoareTripleChecker+Valid, 19057 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:42,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5120 Valid, 19057 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:58:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37746 states. [2025-03-16 19:58:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37746 to 37153. [2025-03-16 19:58:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37153 states, 34658 states have (on average 1.7137745974955276) internal successors, (59396), 35327 states have internal predecessors, (59396), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 1056 states have return successors, (5531), 1498 states have call predecessors, (5531), 1435 states have call successors, (5531) [2025-03-16 19:58:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37153 states to 37153 states and 66364 transitions. [2025-03-16 19:58:43,491 INFO L78 Accepts]: Start accepts. Automaton has 37153 states and 66364 transitions. Word has length 172 [2025-03-16 19:58:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:43,491 INFO L471 AbstractCegarLoop]: Abstraction has 37153 states and 66364 transitions. [2025-03-16 19:58:43,491 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 37153 states and 66364 transitions. [2025-03-16 19:58:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:43,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:43,503 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, 1] [2025-03-16 19:58:43,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:58:43,504 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:43,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1573143206, now seen corresponding path program 1 times [2025-03-16 19:58:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276203474] [2025-03-16 19:58:43,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:43,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:43,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:43,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:43,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276203474] [2025-03-16 19:58:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276203474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:43,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:58:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910026728] [2025-03-16 19:58:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:43,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:58:43,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:43,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:58:43,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:43,610 INFO L87 Difference]: Start difference. First operand 37153 states and 66364 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:46,276 INFO L93 Difference]: Finished difference Result 123975 states and 228859 transitions. [2025-03-16 19:58:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:58:46,277 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:46,769 INFO L225 Difference]: With dead ends: 123975 [2025-03-16 19:58:46,769 INFO L226 Difference]: Without dead ends: 88962 [2025-03-16 19:58:46,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:58:46,844 INFO L435 NwaCegarLoop]: 4743 mSDtfsCounter, 5456 mSDsluCounter, 14289 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5491 SdHoareTripleChecker+Valid, 19032 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:46,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5491 Valid, 19032 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 19:58:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88962 states. [2025-03-16 19:58:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88962 to 82484. [2025-03-16 19:58:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82484 states, 76867 states have (on average 1.7387435440436079) internal successors, (133652), 78930 states have internal predecessors, (133652), 2781 states have call successors, (2781), 775 states have call predecessors, (2781), 2834 states have return successors, (19163), 2906 states have call predecessors, (19163), 2779 states have call successors, (19163) [2025-03-16 19:58:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82484 states to 82484 states and 155596 transitions. [2025-03-16 19:58:49,816 INFO L78 Accepts]: Start accepts. Automaton has 82484 states and 155596 transitions. Word has length 172 [2025-03-16 19:58:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:58:49,817 INFO L471 AbstractCegarLoop]: Abstraction has 82484 states and 155596 transitions. [2025-03-16 19:58:49,817 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 82484 states and 155596 transitions. [2025-03-16 19:58:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-16 19:58:49,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:58:49,834 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, 1] [2025-03-16 19:58:49,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:58:49,834 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:58:49,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:58:49,834 INFO L85 PathProgramCache]: Analyzing trace with hash -365396091, now seen corresponding path program 1 times [2025-03-16 19:58:49,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:58:49,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519164045] [2025-03-16 19:58:49,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:58:49,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:58:49,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-16 19:58:49,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-16 19:58:49,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:58:49,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:58:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:58:49,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:58:49,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519164045] [2025-03-16 19:58:49,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519164045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:58:49,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:58:49,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:58:49,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923502992] [2025-03-16 19:58:49,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:58:49,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:58:49,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:58:49,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:58:49,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:58:49,932 INFO L87 Difference]: Start difference. First operand 82484 states and 155596 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:58:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:58:53,513 INFO L93 Difference]: Finished difference Result 193474 states and 378568 transitions. [2025-03-16 19:58:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:58:53,514 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2025-03-16 19:58:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:58:53,932 INFO L225 Difference]: With dead ends: 193474 [2025-03-16 19:58:53,932 INFO L226 Difference]: Without dead ends: 113130 [2025-03-16 19:58:54,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:58:54,132 INFO L435 NwaCegarLoop]: 4409 mSDtfsCounter, 4781 mSDsluCounter, 8652 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 13061 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:58:54,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 13061 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:58:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113130 states.