./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae9f818c1f032966d67b2bd4627e73bc680f5fe59ca24bfc7cff4e83563ff8e3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:56:11,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:56:11,361 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:56:11,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:56:11,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:56:11,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:56:11,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:56:11,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:56:11,387 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:56:11,388 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:56:11,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:56:11,389 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:56:11,389 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:56:11,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:56:11,389 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:56:11,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:56:11,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:56:11,390 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:56:11,391 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:56:11,391 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:56:11,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:56:11,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:56:11,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:56:11,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:11,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:56:11,392 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:56:11,392 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 -> ae9f818c1f032966d67b2bd4627e73bc680f5fe59ca24bfc7cff4e83563ff8e3 [2025-03-16 19:56:11,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:56:11,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:56:11,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:56:11,653 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:56:11,653 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:56:11,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c [2025-03-16 19:56:12,845 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/378abdcad/b100dc12306e40e09f03393f50f4fcd5/FLAG5a7ef8f6d [2025-03-16 19:56:13,519 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:56:13,519 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c [2025-03-16 19:56:13,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/378abdcad/b100dc12306e40e09f03393f50f4fcd5/FLAG5a7ef8f6d [2025-03-16 19:56:13,587 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/378abdcad/b100dc12306e40e09f03393f50f4fcd5 [2025-03-16 19:56:13,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:56:13,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:56:13,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:13,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:56:13,598 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:56:13,599 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:13" (1/1) ... [2025-03-16 19:56:13,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2b0be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:13, skipping insertion in model container [2025-03-16 19:56:13,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:56:13" (1/1) ... [2025-03-16 19:56:13,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:56:14,812 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_label41+token_ring.11.cil-2.c[376251,376264] [2025-03-16 19:56:14,844 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_label41+token_ring.11.cil-2.c[383339,383352] [2025-03-16 19:56:15,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:15,099 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:56:15,664 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_label41+token_ring.11.cil-2.c[376251,376264] [2025-03-16 19:56:15,674 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_label41+token_ring.11.cil-2.c[383339,383352] [2025-03-16 19:56:15,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:56:15,767 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:56:15,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15 WrapperNode [2025-03-16 19:56:15,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:56:15,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:15,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:56:15,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:56:15,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:15,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,165 INFO L138 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13128 [2025-03-16 19:56:16,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:56:16,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:56:16,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:56:16,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:56:16,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,294 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,392 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 19:56:16,392 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,631 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:56:16,749 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:56:16,749 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:56:16,749 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:56:16,750 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (1/1) ... [2025-03-16 19:56:16,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:56:16,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:56:16,778 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 19:56:16,780 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 19:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:56:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:56:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:56:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:56:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:56:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:56:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:56:16,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:56:16,892 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:56:16,894 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:56:22,934 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:56:22,935 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:56:22,935 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:56:22,935 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:56:22,936 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:56:22,936 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:56:22,936 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:56:23,230 INFO L? ?]: Removed 1735 outVars from TransFormulas that were not future-live. [2025-03-16 19:56:23,230 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:56:23,284 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:56:23,285 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:56:23,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:56:23 BoogieIcfgContainer [2025-03-16 19:56:23,285 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:56:23,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:56:23,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:56:23,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:56:23,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:56:13" (1/3) ... [2025-03-16 19:56:23,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71458128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:56:23, skipping insertion in model container [2025-03-16 19:56:23,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:56:15" (2/3) ... [2025-03-16 19:56:23,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71458128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:56:23, skipping insertion in model container [2025-03-16 19:56:23,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:56:23" (3/3) ... [2025-03-16 19:56:23,295 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.11.cil-2.c [2025-03-16 19:56:23,305 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:56:23,309 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label41+token_ring.11.cil-2.c that has 7 procedures, 2460 locations, 1 initial locations, 15 loop locations, and 2 error locations. [2025-03-16 19:56:23,403 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:56:23,411 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;@b8bc21f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:56:23,411 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:56:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 2460 states, 2427 states have (on average 1.8652657601977751) internal successors, (4527), 2429 states have internal predecessors, (4527), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-16 19:56:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:23,430 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:23,430 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] [2025-03-16 19:56:23,431 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:23,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:23,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1933840795, now seen corresponding path program 1 times [2025-03-16 19:56:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:23,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281368170] [2025-03-16 19:56:23,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:23,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:23,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:23,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:23,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:23,911 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 19:56:23,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:23,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281368170] [2025-03-16 19:56:23,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281368170] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:23,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:23,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134402453] [2025-03-16 19:56:23,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:23,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:23,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:23,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:23,942 INFO L87 Difference]: Start difference. First operand has 2460 states, 2427 states have (on average 1.8652657601977751) internal successors, (4527), 2429 states have internal predecessors, (4527), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:24,634 INFO L93 Difference]: Finished difference Result 5268 states and 9736 transitions. [2025-03-16 19:56:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:56:24,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:24,661 INFO L225 Difference]: With dead ends: 5268 [2025-03-16 19:56:24,662 INFO L226 Difference]: Without dead ends: 2817 [2025-03-16 19:56:24,672 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 19:56:24,676 INFO L435 NwaCegarLoop]: 4389 mSDtfsCounter, 4991 mSDsluCounter, 9014 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 13403 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:24,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5010 Valid, 13403 Invalid, 609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:24,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2025-03-16 19:56:24,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2790. [2025-03-16 19:56:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2730 states have (on average 1.810989010989011) internal successors, (4944), 2733 states have internal predecessors, (4944), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2025-03-16 19:56:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 5035 transitions. [2025-03-16 19:56:24,843 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 5035 transitions. Word has length 151 [2025-03-16 19:56:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:24,844 INFO L471 AbstractCegarLoop]: Abstraction has 2790 states and 5035 transitions. [2025-03-16 19:56:24,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:24,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 5035 transitions. [2025-03-16 19:56:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:24,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:24,849 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] [2025-03-16 19:56:24,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:56:24,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:24,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:24,853 INFO L85 PathProgramCache]: Analyzing trace with hash 153029927, now seen corresponding path program 1 times [2025-03-16 19:56:24,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:24,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468247808] [2025-03-16 19:56:24,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:24,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:24,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:24,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:24,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:24,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:25,040 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 19:56:25,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:25,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468247808] [2025-03-16 19:56:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468247808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:25,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:25,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:25,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766054454] [2025-03-16 19:56:25,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:25,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:25,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:25,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:25,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:25,045 INFO L87 Difference]: Start difference. First operand 2790 states and 5035 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:25,467 INFO L93 Difference]: Finished difference Result 3514 states and 6223 transitions. [2025-03-16 19:56:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:25,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:25,479 INFO L225 Difference]: With dead ends: 3514 [2025-03-16 19:56:25,479 INFO L226 Difference]: Without dead ends: 2862 [2025-03-16 19:56:25,482 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 19:56:25,483 INFO L435 NwaCegarLoop]: 4371 mSDtfsCounter, 4684 mSDsluCounter, 8597 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4703 SdHoareTripleChecker+Valid, 12968 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:25,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4703 Valid, 12968 Invalid, 424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:56:25,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2025-03-16 19:56:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2790. [2025-03-16 19:56:25,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2730 states have (on average 1.8102564102564103) internal successors, (4942), 2733 states have internal predecessors, (4942), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2025-03-16 19:56:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 5033 transitions. [2025-03-16 19:56:25,566 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 5033 transitions. Word has length 151 [2025-03-16 19:56:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:25,566 INFO L471 AbstractCegarLoop]: Abstraction has 2790 states and 5033 transitions. [2025-03-16 19:56:25,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 5033 transitions. [2025-03-16 19:56:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:25,573 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:25,574 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] [2025-03-16 19:56:25,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:56:25,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:25,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1656873658, now seen corresponding path program 1 times [2025-03-16 19:56:25,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:25,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014665623] [2025-03-16 19:56:25,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:25,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:25,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:25,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:25,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:25,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:25,793 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 19:56:25,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:25,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014665623] [2025-03-16 19:56:25,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014665623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:25,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:25,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:25,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534634439] [2025-03-16 19:56:25,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:25,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:25,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:25,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:25,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:25,797 INFO L87 Difference]: Start difference. First operand 2790 states and 5033 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:26,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:26,525 INFO L93 Difference]: Finished difference Result 3865 states and 6784 transitions. [2025-03-16 19:56:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:26,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:26,540 INFO L225 Difference]: With dead ends: 3865 [2025-03-16 19:56:26,540 INFO L226 Difference]: Without dead ends: 3213 [2025-03-16 19:56:26,544 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 19:56:26,546 INFO L435 NwaCegarLoop]: 4664 mSDtfsCounter, 4982 mSDsluCounter, 14038 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5001 SdHoareTripleChecker+Valid, 18702 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:26,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5001 Valid, 18702 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:26,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2025-03-16 19:56:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3098. [2025-03-16 19:56:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3011 states have (on average 1.7891066090999668) internal successors, (5387), 3015 states have internal predecessors, (5387), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (69), 66 states have call predecessors, (69), 65 states have call successors, (69) [2025-03-16 19:56:26,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 5521 transitions. [2025-03-16 19:56:26,651 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 5521 transitions. Word has length 151 [2025-03-16 19:56:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:26,652 INFO L471 AbstractCegarLoop]: Abstraction has 3098 states and 5521 transitions. [2025-03-16 19:56:26,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 5521 transitions. [2025-03-16 19:56:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:26,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:26,655 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] [2025-03-16 19:56:26,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:56:26,656 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:26,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:26,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1949259483, now seen corresponding path program 1 times [2025-03-16 19:56:26,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:26,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285378181] [2025-03-16 19:56:26,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:26,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:26,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:26,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:26,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:26,830 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 19:56:26,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285378181] [2025-03-16 19:56:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285378181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:26,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:26,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:26,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56648574] [2025-03-16 19:56:26,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:26,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:26,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:26,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:26,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:26,833 INFO L87 Difference]: Start difference. First operand 3098 states and 5521 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:27,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:27,542 INFO L93 Difference]: Finished difference Result 4847 states and 8363 transitions. [2025-03-16 19:56:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:27,563 INFO L225 Difference]: With dead ends: 4847 [2025-03-16 19:56:27,563 INFO L226 Difference]: Without dead ends: 3887 [2025-03-16 19:56:27,569 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 19:56:27,570 INFO L435 NwaCegarLoop]: 4660 mSDtfsCounter, 4977 mSDsluCounter, 14026 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 18686 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:27,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4996 Valid, 18686 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2025-03-16 19:56:27,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3755. [2025-03-16 19:56:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3612 states have (on average 1.7585825027685493) internal successors, (6352), 3620 states have internal predecessors, (6352), 105 states have call successors, (105), 30 states have call predecessors, (105), 36 states have return successors, (121), 108 states have call predecessors, (121), 105 states have call successors, (121) [2025-03-16 19:56:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 6578 transitions. [2025-03-16 19:56:27,686 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 6578 transitions. Word has length 151 [2025-03-16 19:56:27,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:27,686 INFO L471 AbstractCegarLoop]: Abstraction has 3755 states and 6578 transitions. [2025-03-16 19:56:27,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:27,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 6578 transitions. [2025-03-16 19:56:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:27,692 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:27,692 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] [2025-03-16 19:56:27,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:56:27,692 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:27,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:27,693 INFO L85 PathProgramCache]: Analyzing trace with hash -19028634, now seen corresponding path program 1 times [2025-03-16 19:56:27,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:27,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803449987] [2025-03-16 19:56:27,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:27,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:27,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:27,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:27,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:27,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:27,904 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 19:56:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803449987] [2025-03-16 19:56:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803449987] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:27,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:27,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:27,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145679269] [2025-03-16 19:56:27,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:27,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:27,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:27,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:27,906 INFO L87 Difference]: Start difference. First operand 3755 states and 6578 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:28,542 INFO L93 Difference]: Finished difference Result 6970 states and 11842 transitions. [2025-03-16 19:56:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:28,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:28,562 INFO L225 Difference]: With dead ends: 6970 [2025-03-16 19:56:28,562 INFO L226 Difference]: Without dead ends: 5353 [2025-03-16 19:56:28,569 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 19:56:28,570 INFO L435 NwaCegarLoop]: 4657 mSDtfsCounter, 4972 mSDsluCounter, 14017 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 18674 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:28,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4991 Valid, 18674 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:28,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2025-03-16 19:56:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 5186. [2025-03-16 19:56:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 4925 states have (on average 1.7250761421319798) internal successors, (8496), 4947 states have internal predecessors, (8496), 185 states have call successors, (185), 54 states have call predecessors, (185), 74 states have return successors, (249), 192 states have call predecessors, (249), 185 states have call successors, (249) [2025-03-16 19:56:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 8930 transitions. [2025-03-16 19:56:28,696 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 8930 transitions. Word has length 151 [2025-03-16 19:56:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:28,697 INFO L471 AbstractCegarLoop]: Abstraction has 5186 states and 8930 transitions. [2025-03-16 19:56:28,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:28,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 8930 transitions. [2025-03-16 19:56:28,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:28,700 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:28,701 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:56:28,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:56:28,701 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:28,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash -233857787, now seen corresponding path program 1 times [2025-03-16 19:56:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:28,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4603393] [2025-03-16 19:56:28,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:28,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:28,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:28,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:28,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:28,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:28,822 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 19:56:28,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:28,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4603393] [2025-03-16 19:56:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4603393] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:28,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:28,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:28,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387245428] [2025-03-16 19:56:28,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:28,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:28,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:28,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:28,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:28,825 INFO L87 Difference]: Start difference. First operand 5186 states and 8930 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:29,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:29,525 INFO L93 Difference]: Finished difference Result 11665 states and 19740 transitions. [2025-03-16 19:56:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:29,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:29,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:29,558 INFO L225 Difference]: With dead ends: 11665 [2025-03-16 19:56:29,558 INFO L226 Difference]: Without dead ends: 8617 [2025-03-16 19:56:29,570 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 19:56:29,570 INFO L435 NwaCegarLoop]: 4654 mSDtfsCounter, 4967 mSDsluCounter, 14008 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4986 SdHoareTripleChecker+Valid, 18662 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:29,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4986 Valid, 18662 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8617 states. [2025-03-16 19:56:29,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8617 to 8381. [2025-03-16 19:56:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 7866 states have (on average 1.702517162471396) internal successors, (13392), 7934 states have internal predecessors, (13392), 345 states have call successors, (345), 102 states have call predecessors, (345), 168 states have return successors, (601), 360 states have call predecessors, (601), 345 states have call successors, (601) [2025-03-16 19:56:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 14338 transitions. [2025-03-16 19:56:29,848 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 14338 transitions. Word has length 151 [2025-03-16 19:56:29,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:29,850 INFO L471 AbstractCegarLoop]: Abstraction has 8381 states and 14338 transitions. [2025-03-16 19:56:29,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 14338 transitions. [2025-03-16 19:56:29,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:29,854 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:29,854 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] [2025-03-16 19:56:29,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:56:29,855 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:29,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:29,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1560327558, now seen corresponding path program 1 times [2025-03-16 19:56:29,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:29,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131732897] [2025-03-16 19:56:29,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:29,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:29,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:29,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:29,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:29,958 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 19:56:29,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131732897] [2025-03-16 19:56:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131732897] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:29,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:29,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:29,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203250320] [2025-03-16 19:56:29,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:29,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:29,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:29,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:29,960 INFO L87 Difference]: Start difference. First operand 8381 states and 14338 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:30,377 INFO L93 Difference]: Finished difference Result 16118 states and 27718 transitions. [2025-03-16 19:56:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:30,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:30,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:30,412 INFO L225 Difference]: With dead ends: 16118 [2025-03-16 19:56:30,413 INFO L226 Difference]: Without dead ends: 9875 [2025-03-16 19:56:30,434 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 19:56:30,434 INFO L435 NwaCegarLoop]: 4358 mSDtfsCounter, 4676 mSDsluCounter, 8572 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 12930 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:30,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4695 Valid, 12930 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9875 states. [2025-03-16 19:56:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9875 to 8381. [2025-03-16 19:56:30,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 7866 states have (on average 1.7003559623696924) internal successors, (13375), 7934 states have internal predecessors, (13375), 345 states have call successors, (345), 102 states have call predecessors, (345), 168 states have return successors, (601), 360 states have call predecessors, (601), 345 states have call successors, (601) [2025-03-16 19:56:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 14321 transitions. [2025-03-16 19:56:30,797 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 14321 transitions. Word has length 151 [2025-03-16 19:56:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:30,797 INFO L471 AbstractCegarLoop]: Abstraction has 8381 states and 14321 transitions. [2025-03-16 19:56:30,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 14321 transitions. [2025-03-16 19:56:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:30,803 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:30,803 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] [2025-03-16 19:56:30,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:56:30,804 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:30,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2033846501, now seen corresponding path program 1 times [2025-03-16 19:56:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:30,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060051279] [2025-03-16 19:56:30,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:30,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:30,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:30,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:30,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:30,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:30,904 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 19:56:30,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:30,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060051279] [2025-03-16 19:56:30,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060051279] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:30,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:30,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:30,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25181284] [2025-03-16 19:56:30,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:30,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:30,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:30,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:30,907 INFO L87 Difference]: Start difference. First operand 8381 states and 14321 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:31,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:31,322 INFO L93 Difference]: Finished difference Result 16035 states and 27518 transitions. [2025-03-16 19:56:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:31,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:31,354 INFO L225 Difference]: With dead ends: 16035 [2025-03-16 19:56:31,354 INFO L226 Difference]: Without dead ends: 9792 [2025-03-16 19:56:31,375 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 19:56:31,377 INFO L435 NwaCegarLoop]: 4355 mSDtfsCounter, 4673 mSDsluCounter, 8567 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4692 SdHoareTripleChecker+Valid, 12922 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:31,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4692 Valid, 12922 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:31,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9792 states. [2025-03-16 19:56:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9792 to 8381. [2025-03-16 19:56:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8381 states, 7866 states have (on average 1.6981947622679887) internal successors, (13358), 7934 states have internal predecessors, (13358), 345 states have call successors, (345), 102 states have call predecessors, (345), 168 states have return successors, (601), 360 states have call predecessors, (601), 345 states have call successors, (601) [2025-03-16 19:56:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8381 states to 8381 states and 14304 transitions. [2025-03-16 19:56:31,694 INFO L78 Accepts]: Start accepts. Automaton has 8381 states and 14304 transitions. Word has length 151 [2025-03-16 19:56:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:31,694 INFO L471 AbstractCegarLoop]: Abstraction has 8381 states and 14304 transitions. [2025-03-16 19:56:31,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 8381 states and 14304 transitions. [2025-03-16 19:56:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:31,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:31,699 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] [2025-03-16 19:56:31,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:56:31,700 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:31,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1830203994, now seen corresponding path program 1 times [2025-03-16 19:56:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:31,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879638034] [2025-03-16 19:56:31,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:31,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:31,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:31,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:31,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:31,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:31,842 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 19:56:31,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879638034] [2025-03-16 19:56:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879638034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:31,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:31,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:31,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218369687] [2025-03-16 19:56:31,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:31,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:31,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:31,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:31,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:31,844 INFO L87 Difference]: Start difference. First operand 8381 states and 14304 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:32,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:32,823 INFO L93 Difference]: Finished difference Result 22128 states and 37832 transitions. [2025-03-16 19:56:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:32,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:32,870 INFO L225 Difference]: With dead ends: 22128 [2025-03-16 19:56:32,870 INFO L226 Difference]: Without dead ends: 15885 [2025-03-16 19:56:32,891 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 19:56:32,893 INFO L435 NwaCegarLoop]: 4641 mSDtfsCounter, 4946 mSDsluCounter, 13971 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 18612 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:32,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 18612 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:32,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15885 states. [2025-03-16 19:56:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15885 to 15554. [2025-03-16 19:56:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15554 states, 14477 states have (on average 1.6933066243006147) internal successors, (24514), 14691 states have internal predecessors, (24514), 665 states have call successors, (665), 198 states have call predecessors, (665), 410 states have return successors, (1689), 696 states have call predecessors, (1689), 665 states have call successors, (1689) [2025-03-16 19:56:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15554 states to 15554 states and 26868 transitions. [2025-03-16 19:56:33,324 INFO L78 Accepts]: Start accepts. Automaton has 15554 states and 26868 transitions. Word has length 151 [2025-03-16 19:56:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:33,324 INFO L471 AbstractCegarLoop]: Abstraction has 15554 states and 26868 transitions. [2025-03-16 19:56:33,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 15554 states and 26868 transitions. [2025-03-16 19:56:33,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:33,332 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:33,332 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] [2025-03-16 19:56:33,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:56:33,332 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:33,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash -707924795, now seen corresponding path program 1 times [2025-03-16 19:56:33,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:33,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44227710] [2025-03-16 19:56:33,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:33,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:33,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:33,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:33,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:33,429 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 19:56:33,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:33,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44227710] [2025-03-16 19:56:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44227710] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:33,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:33,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022836143] [2025-03-16 19:56:33,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:33,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:33,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:33,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:33,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:33,431 INFO L87 Difference]: Start difference. First operand 15554 states and 26868 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:34,072 INFO L93 Difference]: Finished difference Result 32400 states and 56964 transitions. [2025-03-16 19:56:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:34,117 INFO L225 Difference]: With dead ends: 32400 [2025-03-16 19:56:34,117 INFO L226 Difference]: Without dead ends: 18984 [2025-03-16 19:56:34,136 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 19:56:34,136 INFO L435 NwaCegarLoop]: 4348 mSDtfsCounter, 4668 mSDsluCounter, 8554 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 12902 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:34,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 12902 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:34,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18984 states. [2025-03-16 19:56:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18984 to 15554. [2025-03-16 19:56:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15554 states, 14477 states have (on average 1.6910271465082545) internal successors, (24481), 14691 states have internal predecessors, (24481), 665 states have call successors, (665), 198 states have call predecessors, (665), 410 states have return successors, (1689), 696 states have call predecessors, (1689), 665 states have call successors, (1689) [2025-03-16 19:56:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15554 states to 15554 states and 26835 transitions. [2025-03-16 19:56:34,566 INFO L78 Accepts]: Start accepts. Automaton has 15554 states and 26835 transitions. Word has length 151 [2025-03-16 19:56:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:34,567 INFO L471 AbstractCegarLoop]: Abstraction has 15554 states and 26835 transitions. [2025-03-16 19:56:34,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 15554 states and 26835 transitions. [2025-03-16 19:56:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:34,573 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:34,573 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] [2025-03-16 19:56:34,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:56:34,574 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:34,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:34,574 INFO L85 PathProgramCache]: Analyzing trace with hash 893241252, now seen corresponding path program 1 times [2025-03-16 19:56:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:34,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532613741] [2025-03-16 19:56:34,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:34,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:34,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:34,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:34,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:34,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:34,696 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 19:56:34,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532613741] [2025-03-16 19:56:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532613741] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:34,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:34,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227155561] [2025-03-16 19:56:34,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:34,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:34,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:34,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:34,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:34,699 INFO L87 Difference]: Start difference. First operand 15554 states and 26835 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:36,053 INFO L93 Difference]: Finished difference Result 47901 states and 84136 transitions. [2025-03-16 19:56:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:36,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:36,182 INFO L225 Difference]: With dead ends: 47901 [2025-03-16 19:56:36,182 INFO L226 Difference]: Without dead ends: 34485 [2025-03-16 19:56:36,219 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 19:56:36,220 INFO L435 NwaCegarLoop]: 4627 mSDtfsCounter, 5238 mSDsluCounter, 13927 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5269 SdHoareTripleChecker+Valid, 18554 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:36,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5269 Valid, 18554 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:56:36,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34485 states. [2025-03-16 19:56:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34485 to 31667. [2025-03-16 19:56:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31667 states, 29336 states have (on average 1.7016975729479138) internal successors, (49921), 30004 states have internal predecessors, (49921), 1273 states have call successors, (1273), 390 states have call predecessors, (1273), 1056 states have return successors, (5369), 1336 states have call predecessors, (5369), 1273 states have call successors, (5369) [2025-03-16 19:56:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31667 states to 31667 states and 56563 transitions. [2025-03-16 19:56:37,569 INFO L78 Accepts]: Start accepts. Automaton has 31667 states and 56563 transitions. Word has length 151 [2025-03-16 19:56:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:37,570 INFO L471 AbstractCegarLoop]: Abstraction has 31667 states and 56563 transitions. [2025-03-16 19:56:37,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 31667 states and 56563 transitions. [2025-03-16 19:56:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:37,580 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:37,580 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] [2025-03-16 19:56:37,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:56:37,581 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:37,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash 252155109, now seen corresponding path program 1 times [2025-03-16 19:56:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:37,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157864668] [2025-03-16 19:56:37,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:37,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:37,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:37,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:37,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:37,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:37,744 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 19:56:37,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:37,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157864668] [2025-03-16 19:56:37,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157864668] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:37,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:37,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:37,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866463113] [2025-03-16 19:56:37,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:37,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:37,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:37,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:37,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:37,746 INFO L87 Difference]: Start difference. First operand 31667 states and 56563 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:38,892 INFO L93 Difference]: Finished difference Result 69968 states and 128716 transitions. [2025-03-16 19:56:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:38,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:39,015 INFO L225 Difference]: With dead ends: 69968 [2025-03-16 19:56:39,015 INFO L226 Difference]: Without dead ends: 40439 [2025-03-16 19:56:39,060 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 19:56:39,061 INFO L435 NwaCegarLoop]: 4343 mSDtfsCounter, 4662 mSDsluCounter, 8543 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 12886 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:39,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 12886 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:39,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40439 states. [2025-03-16 19:56:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40439 to 31667. [2025-03-16 19:56:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31667 states, 29336 states have (on average 1.6994818652849741) internal successors, (49856), 30004 states have internal predecessors, (49856), 1273 states have call successors, (1273), 390 states have call predecessors, (1273), 1056 states have return successors, (5369), 1336 states have call predecessors, (5369), 1273 states have call successors, (5369) [2025-03-16 19:56:40,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31667 states to 31667 states and 56498 transitions. [2025-03-16 19:56:40,274 INFO L78 Accepts]: Start accepts. Automaton has 31667 states and 56498 transitions. Word has length 151 [2025-03-16 19:56:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:40,274 INFO L471 AbstractCegarLoop]: Abstraction has 31667 states and 56498 transitions. [2025-03-16 19:56:40,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 31667 states and 56498 transitions. [2025-03-16 19:56:40,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:40,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:40,285 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] [2025-03-16 19:56:40,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:56:40,285 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:40,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1478400900, now seen corresponding path program 1 times [2025-03-16 19:56:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:40,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84311369] [2025-03-16 19:56:40,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:40,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:40,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:40,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:40,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:40,373 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 19:56:40,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84311369] [2025-03-16 19:56:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84311369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:40,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:40,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:56:40,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207504142] [2025-03-16 19:56:40,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:40,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:56:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:40,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:56:40,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:56:40,375 INFO L87 Difference]: Start difference. First operand 31667 states and 56498 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:43,240 INFO L93 Difference]: Finished difference Result 102854 states and 190527 transitions. [2025-03-16 19:56:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:56:43,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:43,534 INFO L225 Difference]: With dead ends: 102854 [2025-03-16 19:56:43,534 INFO L226 Difference]: Without dead ends: 73325 [2025-03-16 19:56:43,613 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 19:56:43,614 INFO L435 NwaCegarLoop]: 4619 mSDtfsCounter, 5171 mSDsluCounter, 13904 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 18523 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:43,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 18523 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:56:43,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73325 states. [2025-03-16 19:56:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73325 to 68657. [2025-03-16 19:56:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68657 states, 63364 states have (on average 1.7176630263240957) internal successors, (108838), 65426 states have internal predecessors, (108838), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 2834 states have return successors, (18841), 2584 states have call predecessors, (18841), 2457 states have call successors, (18841) [2025-03-16 19:56:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68657 states to 68657 states and 130136 transitions. [2025-03-16 19:56:46,248 INFO L78 Accepts]: Start accepts. Automaton has 68657 states and 130136 transitions. Word has length 151 [2025-03-16 19:56:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:46,248 INFO L471 AbstractCegarLoop]: Abstraction has 68657 states and 130136 transitions. [2025-03-16 19:56:46,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 68657 states and 130136 transitions. [2025-03-16 19:56:46,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:46,263 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:46,263 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] [2025-03-16 19:56:46,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:56:46,263 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:46,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1530084091, now seen corresponding path program 1 times [2025-03-16 19:56:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:46,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331701648] [2025-03-16 19:56:46,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:46,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:46,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:46,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:46,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:46,549 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 19:56:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331701648] [2025-03-16 19:56:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331701648] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:46,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438638892] [2025-03-16 19:56:46,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:46,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:46,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:46,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:46,552 INFO L87 Difference]: Start difference. First operand 68657 states and 130136 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:50,169 INFO L93 Difference]: Finished difference Result 157066 states and 310140 transitions. [2025-03-16 19:56:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:50,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:50,483 INFO L225 Difference]: With dead ends: 157066 [2025-03-16 19:56:50,484 INFO L226 Difference]: Without dead ends: 90547 [2025-03-16 19:56:50,619 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 19:56:50,619 INFO L435 NwaCegarLoop]: 4338 mSDtfsCounter, 4658 mSDsluCounter, 8534 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 12872 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:50,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 12872 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90547 states. [2025-03-16 19:56:55,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90547 to 68657. [2025-03-16 19:56:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68657 states, 63364 states have (on average 1.715627170001894) internal successors, (108709), 65426 states have internal predecessors, (108709), 2457 states have call successors, (2457), 774 states have call predecessors, (2457), 2834 states have return successors, (18841), 2584 states have call predecessors, (18841), 2457 states have call successors, (18841) [2025-03-16 19:56:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68657 states to 68657 states and 130007 transitions. [2025-03-16 19:56:55,461 INFO L78 Accepts]: Start accepts. Automaton has 68657 states and 130007 transitions. Word has length 151 [2025-03-16 19:56:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:56:55,461 INFO L471 AbstractCegarLoop]: Abstraction has 68657 states and 130007 transitions. [2025-03-16 19:56:55,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 68657 states and 130007 transitions. [2025-03-16 19:56:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-16 19:56:55,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:56:55,476 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] [2025-03-16 19:56:55,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:56:55,477 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:56:55,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:56:55,477 INFO L85 PathProgramCache]: Analyzing trace with hash 451077988, now seen corresponding path program 1 times [2025-03-16 19:56:55,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:56:55,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760118240] [2025-03-16 19:56:55,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:56:55,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:56:55,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-16 19:56:55,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-16 19:56:55,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:56:55,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:56:55,747 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 19:56:55,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:56:55,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760118240] [2025-03-16 19:56:55,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760118240] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:56:55,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:56:55,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:56:55,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943277066] [2025-03-16 19:56:55,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:56:55,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:56:55,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:56:55,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:56:55,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:56:55,749 INFO L87 Difference]: Start difference. First operand 68657 states and 130007 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:56:58,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:56:58,936 INFO L93 Difference]: Finished difference Result 154877 states and 305504 transitions. [2025-03-16 19:56:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:56:58,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2025-03-16 19:56:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:56:59,234 INFO L225 Difference]: With dead ends: 154877 [2025-03-16 19:56:59,235 INFO L226 Difference]: Without dead ends: 88358 [2025-03-16 19:56:59,350 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 19:56:59,351 INFO L435 NwaCegarLoop]: 4335 mSDtfsCounter, 4655 mSDsluCounter, 8529 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 12864 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:56:59,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 12864 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:56:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88358 states.