./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.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_label40+token_ring.10.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 b2d817c779a7c88ce14310f494c47ad6ae04ac82c2c2c295ca0b97645ed08cbd --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:55:07,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:55:08,044 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:55:08,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:55:08,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:55:08,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:55:08,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:55:08,068 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:55:08,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:55:08,068 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:55:08,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:55:08,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:55:08,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:55:08,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:55:08,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:55:08,070 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:55:08,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:55:08,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:55:08,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:55:08,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:55:08,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:55:08,071 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 -> b2d817c779a7c88ce14310f494c47ad6ae04ac82c2c2c295ca0b97645ed08cbd [2025-03-16 19:55:08,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:55:08,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:55:08,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:55:08,337 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:55:08,337 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:55:08,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c [2025-03-16 19:55:09,528 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5897274e/d40e66f1936046e7a508a6ffe390a0bd/FLAGff7950e74 [2025-03-16 19:55:10,085 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:55:10,086 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c [2025-03-16 19:55:10,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5897274e/d40e66f1936046e7a508a6ffe390a0bd/FLAGff7950e74 [2025-03-16 19:55:10,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5897274e/d40e66f1936046e7a508a6ffe390a0bd [2025-03-16 19:55:10,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:55:10,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:55:10,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:55:10,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:55:10,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:55:10,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:55:10" (1/1) ... [2025-03-16 19:55:10,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220364be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:10, skipping insertion in model container [2025-03-16 19:55:10,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:55:10" (1/1) ... [2025-03-16 19:55:10,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:55:11,771 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_label40+token_ring.10.cil-2.c[377069,377082] [2025-03-16 19:55:11,802 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_label40+token_ring.10.cil-2.c[383339,383352] [2025-03-16 19:55:12,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:55:12,033 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:55:12,515 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_label40+token_ring.10.cil-2.c[377069,377082] [2025-03-16 19:55:12,520 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_label40+token_ring.10.cil-2.c[383339,383352] [2025-03-16 19:55:12,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:55:12,584 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:55:12,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12 WrapperNode [2025-03-16 19:55:12,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:55:12,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:55:12,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:55:12,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:55:12,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:12,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,005 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13071 [2025-03-16 19:55:13,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:55:13,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:55:13,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:55:13,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:55:13,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,151 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 19:55:13,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,260 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,321 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:55:13,364 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:55:13,365 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:55:13,365 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:55:13,366 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (1/1) ... [2025-03-16 19:55:13,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:55:13,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:55:13,391 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 19:55:13,395 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 19:55:13,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:55:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:55:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:55:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:55:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:55:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:55:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:55:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:55:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:55:13,413 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:55:13,413 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:55:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:55:13,414 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:55:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:55:13,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:55:13,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:55:13,533 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:55:13,535 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:55:19,328 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:55:19,329 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:55:19,329 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:55:19,329 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:55:19,330 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:55:19,330 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:55:19,330 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:55:19,516 INFO L? ?]: Removed 1730 outVars from TransFormulas that were not future-live. [2025-03-16 19:55:19,517 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:55:19,571 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:55:19,571 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:55:19,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:55:19 BoogieIcfgContainer [2025-03-16 19:55:19,573 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:55:19,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:55:19,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:55:19,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:55:19,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:55:10" (1/3) ... [2025-03-16 19:55:19,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21932625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:55:19, skipping insertion in model container [2025-03-16 19:55:19,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:55:12" (2/3) ... [2025-03-16 19:55:19,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21932625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:55:19, skipping insertion in model container [2025-03-16 19:55:19,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:55:19" (3/3) ... [2025-03-16 19:55:19,580 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.10.cil-2.c [2025-03-16 19:55:19,592 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:55:19,595 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label40+token_ring.10.cil-2.c that has 7 procedures, 2436 locations, 1 initial locations, 14 loop locations, and 2 error locations. [2025-03-16 19:55:19,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:55:19,705 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;@461ba4fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:55:19,705 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:55:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 2436 states, 2404 states have (on average 1.8668885191347753) internal successors, (4488), 2406 states have internal predecessors, (4488), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-16 19:55:19,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:19,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:19,729 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] [2025-03-16 19:55:19,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:19,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1422575049, now seen corresponding path program 1 times [2025-03-16 19:55:19,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:19,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531472761] [2025-03-16 19:55:19,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:19,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:19,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:19,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:19,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:19,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:20,059 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 19:55:20,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:20,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531472761] [2025-03-16 19:55:20,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531472761] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:20,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:20,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:55:20,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943190480] [2025-03-16 19:55:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:20,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:55:20,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:20,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:55:20,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:55:20,092 INFO L87 Difference]: Start difference. First operand has 2436 states, 2404 states have (on average 1.8668885191347753) internal successors, (4488), 2406 states have internal predecessors, (4488), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:55:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:20,255 INFO L93 Difference]: Finished difference Result 4869 states and 9064 transitions. [2025-03-16 19:55:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:55:20,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2025-03-16 19:55:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:20,278 INFO L225 Difference]: With dead ends: 4869 [2025-03-16 19:55:20,278 INFO L226 Difference]: Without dead ends: 2431 [2025-03-16 19:55:20,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:55:20,287 INFO L435 NwaCegarLoop]: 4460 mSDtfsCounter, 495 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 8421 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:20,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 8421 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:55:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2025-03-16 19:55:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2431. [2025-03-16 19:55:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2399 states have (on average 1.8361817423926636) internal successors, (4405), 2401 states have internal predecessors, (4405), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-16 19:55:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4453 transitions. [2025-03-16 19:55:20,397 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4453 transitions. Word has length 141 [2025-03-16 19:55:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:20,398 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4453 transitions. [2025-03-16 19:55:20,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:55:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4453 transitions. [2025-03-16 19:55:20,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:20,404 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:20,404 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] [2025-03-16 19:55:20,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:55:20,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:20,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1533628824, now seen corresponding path program 1 times [2025-03-16 19:55:20,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:20,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59328939] [2025-03-16 19:55:20,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:20,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:20,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:20,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:20,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:20,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:20,514 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 19:55:20,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59328939] [2025-03-16 19:55:20,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59328939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:20,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:20,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:55:20,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842530786] [2025-03-16 19:55:20,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:20,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:55:20,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:20,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:55:20,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:55:20,517 INFO L87 Difference]: Start difference. First operand 2431 states and 4453 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:55:20,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:20,574 INFO L93 Difference]: Finished difference Result 2728 states and 4925 transitions. [2025-03-16 19:55:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:55:20,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2025-03-16 19:55:20,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:20,586 INFO L225 Difference]: With dead ends: 2728 [2025-03-16 19:55:20,586 INFO L226 Difference]: Without dead ends: 2431 [2025-03-16 19:55:20,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:55:20,589 INFO L435 NwaCegarLoop]: 4451 mSDtfsCounter, 482 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 8408 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:20,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 8408 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:55:20,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2025-03-16 19:55:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2431. [2025-03-16 19:55:20,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2399 states have (on average 1.8357649020425177) internal successors, (4404), 2401 states have internal predecessors, (4404), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-16 19:55:20,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4452 transitions. [2025-03-16 19:55:20,640 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4452 transitions. Word has length 141 [2025-03-16 19:55:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:20,640 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4452 transitions. [2025-03-16 19:55:20,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:55:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4452 transitions. [2025-03-16 19:55:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:20,643 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:20,643 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] [2025-03-16 19:55:20,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:55:20,643 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:20,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:20,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1748457977, now seen corresponding path program 1 times [2025-03-16 19:55:20,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:20,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443039486] [2025-03-16 19:55:20,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:20,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:20,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:20,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:20,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:20,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:20,894 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 19:55:20,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:20,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443039486] [2025-03-16 19:55:20,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443039486] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:20,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:55:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988370038] [2025-03-16 19:55:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:20,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:55:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:20,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:55:20,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:55:20,897 INFO L87 Difference]: Start difference. First operand 2431 states and 4452 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 19:55:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:21,433 INFO L93 Difference]: Finished difference Result 3060 states and 5469 transitions. [2025-03-16 19:55:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:55:21,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:21,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:21,445 INFO L225 Difference]: With dead ends: 3060 [2025-03-16 19:55:21,446 INFO L226 Difference]: Without dead ends: 2766 [2025-03-16 19:55:21,448 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 19:55:21,448 INFO L435 NwaCegarLoop]: 4347 mSDtfsCounter, 4901 mSDsluCounter, 8906 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4919 SdHoareTripleChecker+Valid, 13253 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:21,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4919 Valid, 13253 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:55:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2025-03-16 19:55:21,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2741. [2025-03-16 19:55:21,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2683 states have (on average 1.8128960119269475) internal successors, (4864), 2686 states have internal predecessors, (4864), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2025-03-16 19:55:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4951 transitions. [2025-03-16 19:55:21,506 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4951 transitions. Word has length 141 [2025-03-16 19:55:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:21,507 INFO L471 AbstractCegarLoop]: Abstraction has 2741 states and 4951 transitions. [2025-03-16 19:55:21,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 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 19:55:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4951 transitions. [2025-03-16 19:55:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:21,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:21,508 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] [2025-03-16 19:55:21,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:55:21,509 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:21,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:21,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1424230120, now seen corresponding path program 1 times [2025-03-16 19:55:21,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:21,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857542506] [2025-03-16 19:55:21,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:21,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:21,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:21,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:21,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:21,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:21,658 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 19:55:21,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:21,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857542506] [2025-03-16 19:55:21,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857542506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:21,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:21,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:55:21,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921173555] [2025-03-16 19:55:21,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:21,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:55:21,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:21,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:55:21,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:55:21,659 INFO L87 Difference]: Start difference. First operand 2741 states and 4951 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:21,978 INFO L93 Difference]: Finished difference Result 3411 states and 6047 transitions. [2025-03-16 19:55:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:55:21,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:21,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:21,989 INFO L225 Difference]: With dead ends: 3411 [2025-03-16 19:55:21,989 INFO L226 Difference]: Without dead ends: 2807 [2025-03-16 19:55:21,992 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 19:55:21,993 INFO L435 NwaCegarLoop]: 4337 mSDtfsCounter, 4625 mSDsluCounter, 8539 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4643 SdHoareTripleChecker+Valid, 12876 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:21,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4643 Valid, 12876 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:55:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2025-03-16 19:55:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2741. [2025-03-16 19:55:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2683 states have (on average 1.812150577711517) internal successors, (4862), 2686 states have internal predecessors, (4862), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2025-03-16 19:55:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4949 transitions. [2025-03-16 19:55:22,048 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4949 transitions. Word has length 141 [2025-03-16 19:55:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:22,049 INFO L471 AbstractCegarLoop]: Abstraction has 2741 states and 4949 transitions. [2025-03-16 19:55:22,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4949 transitions. [2025-03-16 19:55:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:22,050 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:22,050 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] [2025-03-16 19:55:22,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:55:22,050 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:22,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash 967277081, now seen corresponding path program 1 times [2025-03-16 19:55:22,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:22,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131027134] [2025-03-16 19:55:22,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:22,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:22,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:22,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:22,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:22,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:22,275 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 19:55:22,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:22,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131027134] [2025-03-16 19:55:22,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131027134] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:22,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:22,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:55:22,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932605491] [2025-03-16 19:55:22,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:22,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:55:22,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:22,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:55:22,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:55:22,277 INFO L87 Difference]: Start difference. First operand 2741 states and 4949 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:22,989 INFO L93 Difference]: Finished difference Result 3740 states and 6572 transitions. [2025-03-16 19:55:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:55:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:23,006 INFO L225 Difference]: With dead ends: 3740 [2025-03-16 19:55:23,006 INFO L226 Difference]: Without dead ends: 3136 [2025-03-16 19:55:23,010 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 19:55:23,012 INFO L435 NwaCegarLoop]: 4611 mSDtfsCounter, 4899 mSDsluCounter, 13868 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4917 SdHoareTripleChecker+Valid, 18479 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:23,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4917 Valid, 18479 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:55:23,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2025-03-16 19:55:23,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 3027. [2025-03-16 19:55:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3027 states, 2943 states have (on average 1.7917091403329934) internal successors, (5273), 2947 states have internal predecessors, (5273), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (66), 63 states have call predecessors, (66), 62 states have call successors, (66) [2025-03-16 19:55:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 5401 transitions. [2025-03-16 19:55:23,096 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 5401 transitions. Word has length 141 [2025-03-16 19:55:23,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:23,096 INFO L471 AbstractCegarLoop]: Abstraction has 3027 states and 5401 transitions. [2025-03-16 19:55:23,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 5401 transitions. [2025-03-16 19:55:23,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:23,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:23,098 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] [2025-03-16 19:55:23,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:55:23,098 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:23,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:23,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1726524168, now seen corresponding path program 1 times [2025-03-16 19:55:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:23,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243897255] [2025-03-16 19:55:23,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:23,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:23,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:23,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:23,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:23,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:23,255 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 19:55:23,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:23,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243897255] [2025-03-16 19:55:23,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243897255] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:23,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:23,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:55:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861105475] [2025-03-16 19:55:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:23,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:55:23,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:23,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:55:23,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:55:23,258 INFO L87 Difference]: Start difference. First operand 3027 states and 5401 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:23,965 INFO L93 Difference]: Finished difference Result 4653 states and 8037 transitions. [2025-03-16 19:55:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:55:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:23,980 INFO L225 Difference]: With dead ends: 4653 [2025-03-16 19:55:23,981 INFO L226 Difference]: Without dead ends: 3763 [2025-03-16 19:55:23,985 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 19:55:23,986 INFO L435 NwaCegarLoop]: 4607 mSDtfsCounter, 4894 mSDsluCounter, 13856 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 18463 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:23,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4912 Valid, 18463 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:55:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2025-03-16 19:55:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3638. [2025-03-16 19:55:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3500 states have (on average 1.7617142857142858) internal successors, (6166), 3508 states have internal predecessors, (6166), 100 states have call successors, (100), 30 states have call predecessors, (100), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2025-03-16 19:55:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 6382 transitions. [2025-03-16 19:55:24,102 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 6382 transitions. Word has length 141 [2025-03-16 19:55:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:24,103 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 6382 transitions. [2025-03-16 19:55:24,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 6382 transitions. [2025-03-16 19:55:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:24,105 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:24,105 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] [2025-03-16 19:55:24,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:55:24,105 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:24,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1927356985, now seen corresponding path program 1 times [2025-03-16 19:55:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:24,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783778351] [2025-03-16 19:55:24,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:24,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:24,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:24,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:24,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:24,246 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 19:55:24,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:24,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783778351] [2025-03-16 19:55:24,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783778351] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:24,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:24,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:55:24,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201748337] [2025-03-16 19:55:24,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:24,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:55:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:24,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:55:24,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:55:24,248 INFO L87 Difference]: Start difference. First operand 3638 states and 6382 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:24,930 INFO L93 Difference]: Finished difference Result 6630 states and 11272 transitions. [2025-03-16 19:55:24,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:55:24,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:24,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:24,951 INFO L225 Difference]: With dead ends: 6630 [2025-03-16 19:55:24,954 INFO L226 Difference]: Without dead ends: 5129 [2025-03-16 19:55:24,959 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 19:55:24,960 INFO L435 NwaCegarLoop]: 4604 mSDtfsCounter, 4889 mSDsluCounter, 13847 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4907 SdHoareTripleChecker+Valid, 18451 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:24,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4907 Valid, 18451 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:55:24,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2025-03-16 19:55:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 4971. [2025-03-16 19:55:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4971 states, 4719 states have (on average 1.7279084551811825) internal successors, (8154), 4741 states have internal predecessors, (8154), 176 states have call successors, (176), 54 states have call predecessors, (176), 74 states have return successors, (240), 183 states have call predecessors, (240), 176 states have call successors, (240) [2025-03-16 19:55:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4971 states to 4971 states and 8570 transitions. [2025-03-16 19:55:25,097 INFO L78 Accepts]: Start accepts. Automaton has 4971 states and 8570 transitions. Word has length 141 [2025-03-16 19:55:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:25,097 INFO L471 AbstractCegarLoop]: Abstraction has 4971 states and 8570 transitions. [2025-03-16 19:55:25,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:25,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4971 states and 8570 transitions. [2025-03-16 19:55:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:25,099 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:25,100 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] [2025-03-16 19:55:25,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:55:25,100 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:25,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:25,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1141364520, now seen corresponding path program 1 times [2025-03-16 19:55:25,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:25,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379794128] [2025-03-16 19:55:25,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:25,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:25,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:25,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:25,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:25,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:25,214 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 19:55:25,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379794128] [2025-03-16 19:55:25,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379794128] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:25,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:25,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:55:25,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667997841] [2025-03-16 19:55:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:25,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:55:25,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:25,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:55:25,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:55:25,215 INFO L87 Difference]: Start difference. First operand 4971 states and 8570 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:25,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:25,951 INFO L93 Difference]: Finished difference Result 11009 states and 18634 transitions. [2025-03-16 19:55:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:55:25,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:25,978 INFO L225 Difference]: With dead ends: 11009 [2025-03-16 19:55:25,978 INFO L226 Difference]: Without dead ends: 8175 [2025-03-16 19:55:25,985 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 19:55:25,988 INFO L435 NwaCegarLoop]: 4601 mSDtfsCounter, 4884 mSDsluCounter, 13838 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4902 SdHoareTripleChecker+Valid, 18439 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:25,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4902 Valid, 18439 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:55:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2025-03-16 19:55:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 7952. [2025-03-16 19:55:26,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7952 states, 7454 states have (on average 1.7040515159645828) internal successors, (12702), 7522 states have internal predecessors, (12702), 328 states have call successors, (328), 102 states have call predecessors, (328), 168 states have return successors, (584), 343 states have call predecessors, (584), 328 states have call successors, (584) [2025-03-16 19:55:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7952 states to 7952 states and 13614 transitions. [2025-03-16 19:55:26,192 INFO L78 Accepts]: Start accepts. Automaton has 7952 states and 13614 transitions. Word has length 141 [2025-03-16 19:55:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:26,193 INFO L471 AbstractCegarLoop]: Abstraction has 7952 states and 13614 transitions. [2025-03-16 19:55:26,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:26,193 INFO L276 IsEmpty]: Start isEmpty. Operand 7952 states and 13614 transitions. [2025-03-16 19:55:26,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:26,197 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:26,197 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] [2025-03-16 19:55:26,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:55:26,198 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:26,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 145117785, now seen corresponding path program 1 times [2025-03-16 19:55:26,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:26,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745415773] [2025-03-16 19:55:26,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:26,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:26,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:26,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:26,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:26,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:26,319 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 19:55:26,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:26,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745415773] [2025-03-16 19:55:26,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745415773] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:26,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:26,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:55:26,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267722651] [2025-03-16 19:55:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:26,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:55:26,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:26,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:55:26,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:55:26,321 INFO L87 Difference]: Start difference. First operand 7952 states and 13614 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:27,079 INFO L93 Difference]: Finished difference Result 20968 states and 36012 transitions. [2025-03-16 19:55:27,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:55:27,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:27,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:27,132 INFO L225 Difference]: With dead ends: 20968 [2025-03-16 19:55:27,132 INFO L226 Difference]: Without dead ends: 15153 [2025-03-16 19:55:27,157 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 19:55:27,157 INFO L435 NwaCegarLoop]: 4598 mSDtfsCounter, 4879 mSDsluCounter, 13829 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4897 SdHoareTripleChecker+Valid, 18427 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:27,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4897 Valid, 18427 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:55:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2025-03-16 19:55:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 14805. [2025-03-16 19:55:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14805 states, 13761 states have (on average 1.7011845069399025) internal successors, (23410), 13975 states have internal predecessors, (23410), 632 states have call successors, (632), 198 states have call predecessors, (632), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2025-03-16 19:55:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25698 transitions. [2025-03-16 19:55:27,704 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25698 transitions. Word has length 141 [2025-03-16 19:55:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:27,705 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25698 transitions. [2025-03-16 19:55:27,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:27,706 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25698 transitions. [2025-03-16 19:55:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:27,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:27,713 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] [2025-03-16 19:55:27,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:55:27,714 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:27,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:27,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2126279864, now seen corresponding path program 1 times [2025-03-16 19:55:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:27,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483124097] [2025-03-16 19:55:27,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:27,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:27,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:27,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:27,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:27,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:27,812 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 19:55:27,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:27,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483124097] [2025-03-16 19:55:27,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483124097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:27,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:27,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:55:27,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748198007] [2025-03-16 19:55:27,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:27,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:55:27,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:27,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:55:27,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:55:27,814 INFO L87 Difference]: Start difference. First operand 14805 states and 25698 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:28,316 INFO L93 Difference]: Finished difference Result 31393 states and 55608 transitions. [2025-03-16 19:55:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:55:28,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:28,376 INFO L225 Difference]: With dead ends: 31393 [2025-03-16 19:55:28,376 INFO L226 Difference]: Without dead ends: 18725 [2025-03-16 19:55:28,414 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 19:55:28,415 INFO L435 NwaCegarLoop]: 4324 mSDtfsCounter, 4617 mSDsluCounter, 8514 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4635 SdHoareTripleChecker+Valid, 12838 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:28,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4635 Valid, 12838 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:55:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18725 states. [2025-03-16 19:55:28,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18725 to 14805. [2025-03-16 19:55:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14805 states, 13761 states have (on average 1.6987864254051304) internal successors, (23377), 13975 states have internal predecessors, (23377), 632 states have call successors, (632), 198 states have call predecessors, (632), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2025-03-16 19:55:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25665 transitions. [2025-03-16 19:55:29,033 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25665 transitions. Word has length 141 [2025-03-16 19:55:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:29,034 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25665 transitions. [2025-03-16 19:55:29,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:29,034 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25665 transitions. [2025-03-16 19:55:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:29,040 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:29,040 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] [2025-03-16 19:55:29,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:55:29,040 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:29,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:29,041 INFO L85 PathProgramCache]: Analyzing trace with hash 943262329, now seen corresponding path program 1 times [2025-03-16 19:55:29,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:29,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132354164] [2025-03-16 19:55:29,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:29,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:29,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:29,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:29,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:29,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:29,137 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 19:55:29,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:29,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132354164] [2025-03-16 19:55:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132354164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:29,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:55:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576257242] [2025-03-16 19:55:29,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:29,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:55:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:29,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:55:29,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:55:29,139 INFO L87 Difference]: Start difference. First operand 14805 states and 25665 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:29,656 INFO L93 Difference]: Finished difference Result 31148 states and 55052 transitions. [2025-03-16 19:55:29,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:55:29,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:29,721 INFO L225 Difference]: With dead ends: 31148 [2025-03-16 19:55:29,721 INFO L226 Difference]: Without dead ends: 18480 [2025-03-16 19:55:29,754 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 19:55:29,755 INFO L435 NwaCegarLoop]: 4292 mSDtfsCounter, 4641 mSDsluCounter, 8480 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 12772 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:29,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4659 Valid, 12772 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:55:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18480 states. [2025-03-16 19:55:30,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18480 to 14805. [2025-03-16 19:55:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14805 states, 13761 states have (on average 1.6963883438703582) internal successors, (23344), 13975 states have internal predecessors, (23344), 632 states have call successors, (632), 198 states have call predecessors, (632), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2025-03-16 19:55:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25632 transitions. [2025-03-16 19:55:30,484 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25632 transitions. Word has length 141 [2025-03-16 19:55:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:30,484 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25632 transitions. [2025-03-16 19:55:30,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:30,484 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25632 transitions. [2025-03-16 19:55:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:30,491 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:30,491 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] [2025-03-16 19:55:30,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:55:30,492 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:30,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash -203278184, now seen corresponding path program 1 times [2025-03-16 19:55:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:30,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905076162] [2025-03-16 19:55:30,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:30,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:30,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:30,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:30,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:30,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:30,630 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 19:55:30,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:30,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905076162] [2025-03-16 19:55:30,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905076162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:30,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:30,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:55:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593151290] [2025-03-16 19:55:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:30,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:55:30,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:30,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:55:30,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:55:30,631 INFO L87 Difference]: Start difference. First operand 14805 states and 25632 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:31,935 INFO L93 Difference]: Finished difference Result 43719 states and 77484 transitions. [2025-03-16 19:55:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:55:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:32,132 INFO L225 Difference]: With dead ends: 43719 [2025-03-16 19:55:32,133 INFO L226 Difference]: Without dead ends: 31051 [2025-03-16 19:55:32,156 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 19:55:32,157 INFO L435 NwaCegarLoop]: 4585 mSDtfsCounter, 4858 mSDsluCounter, 13792 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4876 SdHoareTripleChecker+Valid, 18377 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:32,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4876 Valid, 18377 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:55:32,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31051 states. [2025-03-16 19:55:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31051 to 30536. [2025-03-16 19:55:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30536 states, 28238 states have (on average 1.7084779375309866) internal successors, (48244), 28906 states have internal predecessors, (48244), 1240 states have call successors, (1240), 390 states have call predecessors, (1240), 1056 states have return successors, (5336), 1303 states have call predecessors, (5336), 1240 states have call successors, (5336) [2025-03-16 19:55:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30536 states to 30536 states and 54820 transitions. [2025-03-16 19:55:33,163 INFO L78 Accepts]: Start accepts. Automaton has 30536 states and 54820 transitions. Word has length 141 [2025-03-16 19:55:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:33,163 INFO L471 AbstractCegarLoop]: Abstraction has 30536 states and 54820 transitions. [2025-03-16 19:55:33,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 30536 states and 54820 transitions. [2025-03-16 19:55:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:33,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:33,174 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] [2025-03-16 19:55:33,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:55:33,174 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:33,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1487189351, now seen corresponding path program 1 times [2025-03-16 19:55:33,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:33,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928196326] [2025-03-16 19:55:33,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:33,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:33,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:33,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:33,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:33,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:33,254 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 19:55:33,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928196326] [2025-03-16 19:55:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928196326] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:55:33,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258487193] [2025-03-16 19:55:33,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:33,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:55:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:33,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:55:33,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:55:33,256 INFO L87 Difference]: Start difference. First operand 30536 states and 54820 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:34,247 INFO L93 Difference]: Finished difference Result 68438 states and 126696 transitions. [2025-03-16 19:55:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:55:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:34,390 INFO L225 Difference]: With dead ends: 68438 [2025-03-16 19:55:34,390 INFO L226 Difference]: Without dead ends: 40039 [2025-03-16 19:55:34,598 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 19:55:34,599 INFO L435 NwaCegarLoop]: 4316 mSDtfsCounter, 4610 mSDsluCounter, 8500 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4628 SdHoareTripleChecker+Valid, 12816 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:34,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4628 Valid, 12816 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:55:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40039 states. [2025-03-16 19:55:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40039 to 30536. [2025-03-16 19:55:35,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30536 states, 28238 states have (on average 1.7061760747928323) internal successors, (48179), 28906 states have internal predecessors, (48179), 1240 states have call successors, (1240), 390 states have call predecessors, (1240), 1056 states have return successors, (5336), 1303 states have call predecessors, (5336), 1240 states have call successors, (5336) [2025-03-16 19:55:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30536 states to 30536 states and 54755 transitions. [2025-03-16 19:55:35,755 INFO L78 Accepts]: Start accepts. Automaton has 30536 states and 54755 transitions. Word has length 141 [2025-03-16 19:55:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:35,756 INFO L471 AbstractCegarLoop]: Abstraction has 30536 states and 54755 transitions. [2025-03-16 19:55:35,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 30536 states and 54755 transitions. [2025-03-16 19:55:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:35,768 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:35,769 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] [2025-03-16 19:55:35,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:55:35,769 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:35,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1251511176, now seen corresponding path program 1 times [2025-03-16 19:55:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:35,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662200008] [2025-03-16 19:55:35,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:35,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:35,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:35,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:35,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:35,891 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 19:55:35,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662200008] [2025-03-16 19:55:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662200008] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:35,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:35,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:55:35,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172323405] [2025-03-16 19:55:35,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:35,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:55:35,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:35,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:55:35,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:55:35,893 INFO L87 Difference]: Start difference. First operand 30536 states and 54755 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:38,669 INFO L93 Difference]: Finished difference Result 100668 states and 187484 transitions. [2025-03-16 19:55:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:55:38,669 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:38,897 INFO L225 Difference]: With dead ends: 100668 [2025-03-16 19:55:38,897 INFO L226 Difference]: Without dead ends: 72269 [2025-03-16 19:55:38,963 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 19:55:38,964 INFO L435 NwaCegarLoop]: 4575 mSDtfsCounter, 5126 mSDsluCounter, 13758 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5155 SdHoareTripleChecker+Valid, 18333 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:38,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5155 Valid, 18333 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 19:55:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72269 states. [2025-03-16 19:55:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72269 to 67152. [2025-03-16 19:55:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67152 states, 61924 states have (on average 1.7277469155739293) internal successors, (106989), 63986 states have internal predecessors, (106989), 2392 states have call successors, (2392), 774 states have call predecessors, (2392), 2834 states have return successors, (18776), 2519 states have call predecessors, (18776), 2392 states have call successors, (18776) [2025-03-16 19:55:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67152 states to 67152 states and 128157 transitions. [2025-03-16 19:55:42,053 INFO L78 Accepts]: Start accepts. Automaton has 67152 states and 128157 transitions. Word has length 141 [2025-03-16 19:55:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:42,053 INFO L471 AbstractCegarLoop]: Abstraction has 67152 states and 128157 transitions. [2025-03-16 19:55:42,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 67152 states and 128157 transitions. [2025-03-16 19:55:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:42,069 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:42,069 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] [2025-03-16 19:55:42,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:55:42,069 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:42,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -2075192647, now seen corresponding path program 1 times [2025-03-16 19:55:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270681748] [2025-03-16 19:55:42,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:42,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:42,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:42,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:42,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:42,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:42,133 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 19:55:42,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:42,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270681748] [2025-03-16 19:55:42,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270681748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:42,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:42,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:55:42,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246570518] [2025-03-16 19:55:42,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:42,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:55:42,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:42,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:55:42,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:55:42,134 INFO L87 Difference]: Start difference. First operand 67152 states and 128157 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:45,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:45,254 INFO L93 Difference]: Finished difference Result 156246 states and 310564 transitions. [2025-03-16 19:55:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:55:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:45,687 INFO L225 Difference]: With dead ends: 156246 [2025-03-16 19:55:45,687 INFO L226 Difference]: Without dead ends: 91231 [2025-03-16 19:55:45,904 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 19:55:45,905 INFO L435 NwaCegarLoop]: 4311 mSDtfsCounter, 4604 mSDsluCounter, 8489 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 12800 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:45,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 12800 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:55:45,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91231 states. [2025-03-16 19:55:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91231 to 67152. [2025-03-16 19:55:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67152 states, 61924 states have (on average 1.7256637168141593) internal successors, (106860), 63986 states have internal predecessors, (106860), 2392 states have call successors, (2392), 774 states have call predecessors, (2392), 2834 states have return successors, (18776), 2519 states have call predecessors, (18776), 2392 states have call successors, (18776) [2025-03-16 19:55:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67152 states to 67152 states and 128028 transitions. [2025-03-16 19:55:49,804 INFO L78 Accepts]: Start accepts. Automaton has 67152 states and 128028 transitions. Word has length 141 [2025-03-16 19:55:49,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:55:49,805 INFO L471 AbstractCegarLoop]: Abstraction has 67152 states and 128028 transitions. [2025-03-16 19:55:49,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 67152 states and 128028 transitions. [2025-03-16 19:55:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 19:55:49,820 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:55:49,820 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] [2025-03-16 19:55:49,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 19:55:49,820 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:55:49,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:55:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -993384360, now seen corresponding path program 1 times [2025-03-16 19:55:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:55:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083155257] [2025-03-16 19:55:49,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:55:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:55:49,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 19:55:49,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 19:55:49,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:55:49,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:55:49,903 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 19:55:49,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:55:49,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083155257] [2025-03-16 19:55:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083155257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:55:49,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:55:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:55:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459429868] [2025-03-16 19:55:49,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:55:49,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:55:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:55:49,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:55:49,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:55:49,907 INFO L87 Difference]: Start difference. First operand 67152 states and 128028 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 19:55:55,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:55:55,945 INFO L93 Difference]: Finished difference Result 226704 states and 458985 transitions. [2025-03-16 19:55:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:55:55,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2025-03-16 19:55:55,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:55:56,639 INFO L225 Difference]: With dead ends: 226704 [2025-03-16 19:55:56,639 INFO L226 Difference]: Without dead ends: 161689 [2025-03-16 19:55:56,872 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 19:55:56,873 INFO L435 NwaCegarLoop]: 4567 mSDtfsCounter, 5059 mSDsluCounter, 13735 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 18302 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:55:56,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5088 Valid, 18302 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:55:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161689 states.