./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+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_label48+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 a7e5f5a1db53b7a411af936e12a734750394ab6a9f7be60b4c793a1fb07a048c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:06:22,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:06:22,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:06:22,999 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:06:23,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:06:23,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:06:23,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:06:23,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:06:23,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:06:23,022 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:06:23,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:06:23,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:06:23,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:06:23,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:06:23,023 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:06:23,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:06:23,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:06:23,023 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:06:23,024 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:06:23,025 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:06:23,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:06:23,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:06:23,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:06:23,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:06:23,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:06:23,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:06:23,026 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 -> a7e5f5a1db53b7a411af936e12a734750394ab6a9f7be60b4c793a1fb07a048c [2025-03-16 20:06:23,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:06:23,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:06:23,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:06:23,261 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:06:23,261 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:06:23,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c [2025-03-16 20:06:24,381 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fcfe49a/53b4c8bcc6f14abcbe48f6b2b797e003/FLAG271262041 [2025-03-16 20:06:24,985 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:06:24,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c [2025-03-16 20:06:25,036 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fcfe49a/53b4c8bcc6f14abcbe48f6b2b797e003/FLAG271262041 [2025-03-16 20:06:25,445 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fcfe49a/53b4c8bcc6f14abcbe48f6b2b797e003 [2025-03-16 20:06:25,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:06:25,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:06:25,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:06:25,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:06:25,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:06:25,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:06:25" (1/1) ... [2025-03-16 20:06:25,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ca4528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:25, skipping insertion in model container [2025-03-16 20:06:25,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:06:25" (1/1) ... [2025-03-16 20:06:25,600 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:06:26,703 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_label48+token_ring.10.cil-2.c[375709,375722] [2025-03-16 20:06:26,733 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_label48+token_ring.10.cil-2.c[383339,383352] [2025-03-16 20:06:26,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:06:26,988 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:06:27,483 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_label48+token_ring.10.cil-2.c[375709,375722] [2025-03-16 20:06:27,488 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_label48+token_ring.10.cil-2.c[383339,383352] [2025-03-16 20:06:27,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:06:27,576 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:06:27,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27 WrapperNode [2025-03-16 20:06:27,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:06:27,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:06:27,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:06:27,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:06:27,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:27,645 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:27,998 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13071 [2025-03-16 20:06:27,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:06:28,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:06:28,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:06:28,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:06:28,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,136 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,228 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 20:06:28,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,370 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:06:28,475 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:06:28,476 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:06:28,476 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:06:28,477 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (1/1) ... [2025-03-16 20:06:28,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:06:28,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:06:28,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 20:06:28,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 20:06:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:06:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:06:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:06:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:06:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:06:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:06:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:06:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:06:28,526 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:06:28,526 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:06:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:06:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:06:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:06:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:06:28,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:06:28,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:06:28,639 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:06:28,645 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:06:34,921 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:06:34,922 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:06:34,922 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:06:34,922 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:06:34,922 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:06:34,922 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:06:34,922 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:06:35,123 INFO L? ?]: Removed 1730 outVars from TransFormulas that were not future-live. [2025-03-16 20:06:35,123 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:06:35,171 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:06:35,171 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:06:35,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:06:35 BoogieIcfgContainer [2025-03-16 20:06:35,172 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:06:35,173 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:06:35,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:06:35,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:06:35,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:06:25" (1/3) ... [2025-03-16 20:06:35,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387c5217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:06:35, skipping insertion in model container [2025-03-16 20:06:35,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:06:27" (2/3) ... [2025-03-16 20:06:35,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387c5217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:06:35, skipping insertion in model container [2025-03-16 20:06:35,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:06:35" (3/3) ... [2025-03-16 20:06:35,182 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.10.cil-2.c [2025-03-16 20:06:35,194 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:06:35,197 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label48+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 20:06:35,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:06:35,306 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;@237440f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:06:35,307 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:06:35,318 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 20:06:35,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:35,331 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:35,332 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:06:35,332 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:35,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:35,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1422575049, now seen corresponding path program 1 times [2025-03-16 20:06:35,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:35,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976175683] [2025-03-16 20:06:35,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:35,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:35,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:35,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:35,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:35,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:35,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:35,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:35,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976175683] [2025-03-16 20:06:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976175683] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:35,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:35,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:06:35,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913569688] [2025-03-16 20:06:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:35,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:35,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:35,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:35,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:35,712 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 20:06:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:35,875 INFO L93 Difference]: Finished difference Result 4869 states and 9064 transitions. [2025-03-16 20:06:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:35,878 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 20:06:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:35,903 INFO L225 Difference]: With dead ends: 4869 [2025-03-16 20:06:35,903 INFO L226 Difference]: Without dead ends: 2431 [2025-03-16 20:06:35,911 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 20:06:35,913 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 20:06:35,914 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 20:06:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2025-03-16 20:06:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2431. [2025-03-16 20:06:36,004 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 20:06:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4453 transitions. [2025-03-16 20:06:36,019 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4453 transitions. Word has length 141 [2025-03-16 20:06:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:36,019 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4453 transitions. [2025-03-16 20:06:36,020 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 20:06:36,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4453 transitions. [2025-03-16 20:06:36,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:36,024 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:36,024 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 20:06:36,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:06:36,025 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:36,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1533628824, now seen corresponding path program 1 times [2025-03-16 20:06:36,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:36,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258729841] [2025-03-16 20:06:36,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:36,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:36,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:36,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:36,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:36,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:36,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258729841] [2025-03-16 20:06:36,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258729841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:36,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:36,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 20:06:36,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032720805] [2025-03-16 20:06:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:36,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 20:06:36,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:36,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 20:06:36,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 20:06:36,211 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 20:06:36,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:36,268 INFO L93 Difference]: Finished difference Result 2728 states and 4925 transitions. [2025-03-16 20:06:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 20:06:36,269 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 20:06:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:36,279 INFO L225 Difference]: With dead ends: 2728 [2025-03-16 20:06:36,280 INFO L226 Difference]: Without dead ends: 2431 [2025-03-16 20:06:36,283 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 20:06:36,283 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 20:06:36,284 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 20:06:36,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2025-03-16 20:06:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2431. [2025-03-16 20:06:36,337 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 20:06:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4452 transitions. [2025-03-16 20:06:36,348 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 4452 transitions. Word has length 141 [2025-03-16 20:06:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:36,349 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 4452 transitions. [2025-03-16 20:06:36,349 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 20:06:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 4452 transitions. [2025-03-16 20:06:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:36,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:36,351 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 20:06:36,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:06:36,351 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:36,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1748457977, now seen corresponding path program 1 times [2025-03-16 20:06:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:36,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405099152] [2025-03-16 20:06:36,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:36,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:36,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:36,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:36,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:36,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:36,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405099152] [2025-03-16 20:06:36,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405099152] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:36,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:36,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:36,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91694917] [2025-03-16 20:06:36,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:36,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:36,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:36,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:36,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:36,556 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 20:06:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:37,124 INFO L93 Difference]: Finished difference Result 3060 states and 5469 transitions. [2025-03-16 20:06:37,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:06:37,124 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 20:06:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:37,140 INFO L225 Difference]: With dead ends: 3060 [2025-03-16 20:06:37,140 INFO L226 Difference]: Without dead ends: 2766 [2025-03-16 20:06:37,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:37,144 INFO L435 NwaCegarLoop]: 4347 mSDtfsCounter, 4901 mSDsluCounter, 8906 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 20:06:37,144 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 20:06:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2025-03-16 20:06:37,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2741. [2025-03-16 20:06:37,204 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 20:06:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4951 transitions. [2025-03-16 20:06:37,215 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4951 transitions. Word has length 141 [2025-03-16 20:06:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:37,215 INFO L471 AbstractCegarLoop]: Abstraction has 2741 states and 4951 transitions. [2025-03-16 20:06:37,215 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 20:06:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4951 transitions. [2025-03-16 20:06:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:37,217 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:37,217 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 20:06:37,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:06:37,217 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:37,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:37,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1424230120, now seen corresponding path program 1 times [2025-03-16 20:06:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:37,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694059316] [2025-03-16 20:06:37,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:37,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:37,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:37,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:37,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:37,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:37,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694059316] [2025-03-16 20:06:37,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694059316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:37,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:37,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:37,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177065034] [2025-03-16 20:06:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:37,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:37,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:37,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:37,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:37,387 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 20:06:37,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:37,708 INFO L93 Difference]: Finished difference Result 3411 states and 6047 transitions. [2025-03-16 20:06:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:37,709 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 20:06:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:37,720 INFO L225 Difference]: With dead ends: 3411 [2025-03-16 20:06:37,720 INFO L226 Difference]: Without dead ends: 2807 [2025-03-16 20:06:37,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:37,723 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 20:06:37,724 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 20:06:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2025-03-16 20:06:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2741. [2025-03-16 20:06:37,861 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 20:06:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4949 transitions. [2025-03-16 20:06:37,872 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4949 transitions. Word has length 141 [2025-03-16 20:06:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:37,872 INFO L471 AbstractCegarLoop]: Abstraction has 2741 states and 4949 transitions. [2025-03-16 20:06:37,872 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 20:06:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4949 transitions. [2025-03-16 20:06:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:37,874 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:37,874 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 20:06:37,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:06:37,874 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:37,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 967277081, now seen corresponding path program 1 times [2025-03-16 20:06:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:37,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320002653] [2025-03-16 20:06:37,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:37,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:37,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:37,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:37,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:37,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:38,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:38,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320002653] [2025-03-16 20:06:38,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320002653] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:38,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:38,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:38,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387726856] [2025-03-16 20:06:38,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:38,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:38,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:38,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:38,053 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 20:06:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:38,706 INFO L93 Difference]: Finished difference Result 3740 states and 6572 transitions. [2025-03-16 20:06:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:38,707 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 20:06:38,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:38,722 INFO L225 Difference]: With dead ends: 3740 [2025-03-16 20:06:38,722 INFO L226 Difference]: Without dead ends: 3136 [2025-03-16 20:06:38,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:38,727 INFO L435 NwaCegarLoop]: 4611 mSDtfsCounter, 4899 mSDsluCounter, 13868 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 20:06:38,727 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 20:06:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2025-03-16 20:06:38,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 3027. [2025-03-16 20:06:38,797 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 20:06:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 5401 transitions. [2025-03-16 20:06:38,807 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 5401 transitions. Word has length 141 [2025-03-16 20:06:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:38,808 INFO L471 AbstractCegarLoop]: Abstraction has 3027 states and 5401 transitions. [2025-03-16 20:06:38,808 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 20:06:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 5401 transitions. [2025-03-16 20:06:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:38,809 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:38,810 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 20:06:38,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:06:38,810 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:38,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1726524168, now seen corresponding path program 1 times [2025-03-16 20:06:38,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:38,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306747530] [2025-03-16 20:06:38,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:38,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:38,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:38,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:38,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:38,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:38,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:38,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306747530] [2025-03-16 20:06:38,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306747530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:38,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:38,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:38,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089595804] [2025-03-16 20:06:38,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:38,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:38,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:38,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:38,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:38,947 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 20:06:39,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:39,912 INFO L93 Difference]: Finished difference Result 4653 states and 8037 transitions. [2025-03-16 20:06:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:39,912 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 20:06:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:39,935 INFO L225 Difference]: With dead ends: 4653 [2025-03-16 20:06:39,935 INFO L226 Difference]: Without dead ends: 3763 [2025-03-16 20:06:39,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:39,942 INFO L435 NwaCegarLoop]: 4607 mSDtfsCounter, 4894 mSDsluCounter, 13856 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:39,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4912 Valid, 18463 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-16 20:06:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2025-03-16 20:06:40,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3638. [2025-03-16 20:06:40,072 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 20:06:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 6382 transitions. [2025-03-16 20:06:40,090 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 6382 transitions. Word has length 141 [2025-03-16 20:06:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:40,091 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 6382 transitions. [2025-03-16 20:06:40,091 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 20:06:40,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 6382 transitions. [2025-03-16 20:06:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:40,093 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:40,093 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 20:06:40,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:06:40,094 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:40,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:40,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1927356985, now seen corresponding path program 1 times [2025-03-16 20:06:40,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:40,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294928313] [2025-03-16 20:06:40,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:40,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:40,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:40,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:40,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:40,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294928313] [2025-03-16 20:06:40,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294928313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:40,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:40,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:40,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154375149] [2025-03-16 20:06:40,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:40,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:40,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:40,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:40,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:40,233 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 20:06:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:40,906 INFO L93 Difference]: Finished difference Result 6630 states and 11272 transitions. [2025-03-16 20:06:40,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:40,906 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 20:06:40,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:40,925 INFO L225 Difference]: With dead ends: 6630 [2025-03-16 20:06:40,925 INFO L226 Difference]: Without dead ends: 5129 [2025-03-16 20:06:40,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:40,932 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 20:06:40,932 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 20:06:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2025-03-16 20:06:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 4971. [2025-03-16 20:06:41,078 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 20:06:41,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4971 states to 4971 states and 8570 transitions. [2025-03-16 20:06:41,094 INFO L78 Accepts]: Start accepts. Automaton has 4971 states and 8570 transitions. Word has length 141 [2025-03-16 20:06:41,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:41,095 INFO L471 AbstractCegarLoop]: Abstraction has 4971 states and 8570 transitions. [2025-03-16 20:06:41,096 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 20:06:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4971 states and 8570 transitions. [2025-03-16 20:06:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:41,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:41,099 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 20:06:41,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:06:41,099 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:41,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:41,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1141364520, now seen corresponding path program 1 times [2025-03-16 20:06:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341727185] [2025-03-16 20:06:41,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:41,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:41,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:41,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:41,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341727185] [2025-03-16 20:06:41,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341727185] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:41,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:41,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:41,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387483136] [2025-03-16 20:06:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:41,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:41,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:41,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:41,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:41,228 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 20:06:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:41,932 INFO L93 Difference]: Finished difference Result 11009 states and 18634 transitions. [2025-03-16 20:06:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:41,933 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 20:06:41,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:41,973 INFO L225 Difference]: With dead ends: 11009 [2025-03-16 20:06:41,973 INFO L226 Difference]: Without dead ends: 8175 [2025-03-16 20:06:41,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:41,986 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 20:06:41,987 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 20:06:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2025-03-16 20:06:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 7952. [2025-03-16 20:06:42,246 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 20:06:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7952 states to 7952 states and 13614 transitions. [2025-03-16 20:06:42,270 INFO L78 Accepts]: Start accepts. Automaton has 7952 states and 13614 transitions. Word has length 141 [2025-03-16 20:06:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:42,270 INFO L471 AbstractCegarLoop]: Abstraction has 7952 states and 13614 transitions. [2025-03-16 20:06:42,271 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 20:06:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 7952 states and 13614 transitions. [2025-03-16 20:06:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:42,275 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:42,275 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 20:06:42,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:06:42,275 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:42,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash 145117785, now seen corresponding path program 1 times [2025-03-16 20:06:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303117545] [2025-03-16 20:06:42,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:42,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:42,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:42,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:42,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:42,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:42,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303117545] [2025-03-16 20:06:42,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303117545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:42,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:42,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:42,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231732660] [2025-03-16 20:06:42,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:42,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:42,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:42,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:42,400 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 20:06:43,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:43,341 INFO L93 Difference]: Finished difference Result 20968 states and 36012 transitions. [2025-03-16 20:06:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:43,342 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 20:06:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:43,394 INFO L225 Difference]: With dead ends: 20968 [2025-03-16 20:06:43,394 INFO L226 Difference]: Without dead ends: 15153 [2025-03-16 20:06:43,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:43,415 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 20:06:43,416 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 20:06:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2025-03-16 20:06:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 14805. [2025-03-16 20:06:43,889 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 20:06:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25698 transitions. [2025-03-16 20:06:43,937 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25698 transitions. Word has length 141 [2025-03-16 20:06:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:43,937 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25698 transitions. [2025-03-16 20:06:43,938 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 20:06:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25698 transitions. [2025-03-16 20:06:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:43,945 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:43,945 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 20:06:43,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:06:43,945 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:43,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2126279864, now seen corresponding path program 1 times [2025-03-16 20:06:43,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:43,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55303544] [2025-03-16 20:06:43,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:43,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:43,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:43,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:43,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:43,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:44,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:44,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55303544] [2025-03-16 20:06:44,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55303544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:44,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:44,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:44,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612500705] [2025-03-16 20:06:44,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:44,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:44,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:44,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:44,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:44,042 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 20:06:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:44,637 INFO L93 Difference]: Finished difference Result 31393 states and 55608 transitions. [2025-03-16 20:06:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:44,638 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 20:06:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:44,701 INFO L225 Difference]: With dead ends: 31393 [2025-03-16 20:06:44,701 INFO L226 Difference]: Without dead ends: 18725 [2025-03-16 20:06:44,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:44,747 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 20:06:44,748 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 20:06:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18725 states. [2025-03-16 20:06:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18725 to 14805. [2025-03-16 20:06:45,520 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 20:06:45,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25665 transitions. [2025-03-16 20:06:45,654 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25665 transitions. Word has length 141 [2025-03-16 20:06:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:45,655 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25665 transitions. [2025-03-16 20:06:45,655 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 20:06:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25665 transitions. [2025-03-16 20:06:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:45,662 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:45,662 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 20:06:45,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:06:45,663 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:45,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash 943262329, now seen corresponding path program 1 times [2025-03-16 20:06:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:45,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865612609] [2025-03-16 20:06:45,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:45,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:45,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:45,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:45,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:45,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:45,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:45,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865612609] [2025-03-16 20:06:45,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865612609] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:45,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:45,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:45,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998291120] [2025-03-16 20:06:45,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:45,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:45,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:45,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:45,767 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 20:06:46,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:46,449 INFO L93 Difference]: Finished difference Result 31148 states and 55052 transitions. [2025-03-16 20:06:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:46,450 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 20:06:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:46,515 INFO L225 Difference]: With dead ends: 31148 [2025-03-16 20:06:46,515 INFO L226 Difference]: Without dead ends: 18480 [2025-03-16 20:06:46,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:46,540 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 20:06:46,540 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 20:06:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18480 states. [2025-03-16 20:06:47,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18480 to 14805. [2025-03-16 20:06:47,265 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 20:06:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14805 states to 14805 states and 25632 transitions. [2025-03-16 20:06:47,364 INFO L78 Accepts]: Start accepts. Automaton has 14805 states and 25632 transitions. Word has length 141 [2025-03-16 20:06:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:47,365 INFO L471 AbstractCegarLoop]: Abstraction has 14805 states and 25632 transitions. [2025-03-16 20:06:47,365 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 20:06:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 14805 states and 25632 transitions. [2025-03-16 20:06:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:47,379 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:47,379 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 20:06:47,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:06:47,380 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:47,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash -203278184, now seen corresponding path program 1 times [2025-03-16 20:06:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:47,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283900552] [2025-03-16 20:06:47,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:47,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:47,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:47,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:47,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:47,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:47,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283900552] [2025-03-16 20:06:47,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283900552] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:47,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:47,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:47,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044756967] [2025-03-16 20:06:47,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:47,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:47,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:47,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:47,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:47,523 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 20:06:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:48,769 INFO L93 Difference]: Finished difference Result 43719 states and 77484 transitions. [2025-03-16 20:06:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:48,770 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 20:06:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:48,883 INFO L225 Difference]: With dead ends: 43719 [2025-03-16 20:06:48,884 INFO L226 Difference]: Without dead ends: 31051 [2025-03-16 20:06:49,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:49,028 INFO L435 NwaCegarLoop]: 4585 mSDtfsCounter, 4858 mSDsluCounter, 13792 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:49,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4876 Valid, 18377 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-16 20:06:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31051 states. [2025-03-16 20:06:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31051 to 30536. [2025-03-16 20:06:50,342 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 20:06:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30536 states to 30536 states and 54820 transitions. [2025-03-16 20:06:50,553 INFO L78 Accepts]: Start accepts. Automaton has 30536 states and 54820 transitions. Word has length 141 [2025-03-16 20:06:50,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:50,554 INFO L471 AbstractCegarLoop]: Abstraction has 30536 states and 54820 transitions. [2025-03-16 20:06:50,554 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 20:06:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 30536 states and 54820 transitions. [2025-03-16 20:06:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:50,564 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:50,565 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 20:06:50,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:06:50,565 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:50,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1487189351, now seen corresponding path program 1 times [2025-03-16 20:06:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133567295] [2025-03-16 20:06:50,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:50,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:50,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:50,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:50,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:50,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:50,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:50,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133567295] [2025-03-16 20:06:50,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133567295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:50,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:50,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:50,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425515685] [2025-03-16 20:06:50,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:50,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:50,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:50,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:50,669 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 20:06:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:52,219 INFO L93 Difference]: Finished difference Result 68438 states and 126696 transitions. [2025-03-16 20:06:52,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:06:52,219 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 20:06:52,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:52,379 INFO L225 Difference]: With dead ends: 68438 [2025-03-16 20:06:52,380 INFO L226 Difference]: Without dead ends: 40039 [2025-03-16 20:06:52,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:52,446 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, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 20:06:52,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4628 Valid, 12816 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 20:06:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40039 states. [2025-03-16 20:06:53,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40039 to 30536. [2025-03-16 20:06:53,864 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 20:06:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30536 states to 30536 states and 54755 transitions. [2025-03-16 20:06:53,954 INFO L78 Accepts]: Start accepts. Automaton has 30536 states and 54755 transitions. Word has length 141 [2025-03-16 20:06:53,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:53,954 INFO L471 AbstractCegarLoop]: Abstraction has 30536 states and 54755 transitions. [2025-03-16 20:06:53,955 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 20:06:53,955 INFO L276 IsEmpty]: Start isEmpty. Operand 30536 states and 54755 transitions. [2025-03-16 20:06:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:53,964 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:53,964 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 20:06:53,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:06:53,964 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:53,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1251511176, now seen corresponding path program 1 times [2025-03-16 20:06:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339488923] [2025-03-16 20:06:53,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:53,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:53,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:53,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:53,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:54,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:54,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339488923] [2025-03-16 20:06:54,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339488923] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:54,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:54,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:06:54,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086198196] [2025-03-16 20:06:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:54,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:06:54,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:54,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:06:54,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:06:54,060 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 20:06:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:06:56,465 INFO L93 Difference]: Finished difference Result 100668 states and 187484 transitions. [2025-03-16 20:06:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:06:56,466 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 20:06:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:06:56,740 INFO L225 Difference]: With dead ends: 100668 [2025-03-16 20:06:56,740 INFO L226 Difference]: Without dead ends: 72269 [2025-03-16 20:06:56,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:06:56,827 INFO L435 NwaCegarLoop]: 4575 mSDtfsCounter, 5126 mSDsluCounter, 13758 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 20:06:56,828 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 20:06:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72269 states. [2025-03-16 20:06:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72269 to 67152. [2025-03-16 20:06:59,405 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 20:06:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67152 states to 67152 states and 128157 transitions. [2025-03-16 20:06:59,812 INFO L78 Accepts]: Start accepts. Automaton has 67152 states and 128157 transitions. Word has length 141 [2025-03-16 20:06:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:06:59,813 INFO L471 AbstractCegarLoop]: Abstraction has 67152 states and 128157 transitions. [2025-03-16 20:06:59,813 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 20:06:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 67152 states and 128157 transitions. [2025-03-16 20:06:59,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:06:59,830 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:06:59,830 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 20:06:59,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 20:06:59,830 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:06:59,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:06:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2075192647, now seen corresponding path program 1 times [2025-03-16 20:06:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:06:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857363132] [2025-03-16 20:06:59,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:06:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:06:59,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:06:59,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:06:59,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:06:59,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:06:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:06:59,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:06:59,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857363132] [2025-03-16 20:06:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857363132] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:06:59,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:06:59,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:06:59,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72642725] [2025-03-16 20:06:59,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:06:59,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:06:59,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:06:59,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:06:59,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:06:59,919 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 20:07:02,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:02,943 INFO L93 Difference]: Finished difference Result 156246 states and 310564 transitions. [2025-03-16 20:07:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:07:02,944 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 20:07:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:03,367 INFO L225 Difference]: With dead ends: 156246 [2025-03-16 20:07:03,367 INFO L226 Difference]: Without dead ends: 91231 [2025-03-16 20:07:03,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:03,601 INFO L435 NwaCegarLoop]: 4311 mSDtfsCounter, 4604 mSDsluCounter, 8489 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:07:03,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 12800 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:07:03,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91231 states. [2025-03-16 20:07:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91231 to 67152. [2025-03-16 20:07:07,415 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 20:07:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67152 states to 67152 states and 128028 transitions. [2025-03-16 20:07:07,696 INFO L78 Accepts]: Start accepts. Automaton has 67152 states and 128028 transitions. Word has length 141 [2025-03-16 20:07:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:07:07,696 INFO L471 AbstractCegarLoop]: Abstraction has 67152 states and 128028 transitions. [2025-03-16 20:07:07,697 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 20:07:07,697 INFO L276 IsEmpty]: Start isEmpty. Operand 67152 states and 128028 transitions. [2025-03-16 20:07:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 20:07:07,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:07:07,713 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 20:07:07,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 20:07:07,713 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:07:07,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:07:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash -993384360, now seen corresponding path program 1 times [2025-03-16 20:07:07,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:07:07,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936600817] [2025-03-16 20:07:07,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:07:07,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:07:07,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 20:07:07,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 20:07:07,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:07:07,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:07:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:07:07,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:07:07,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936600817] [2025-03-16 20:07:07,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936600817] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:07:07,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:07:07,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:07:07,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070881045] [2025-03-16 20:07:07,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:07:07,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:07:07,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:07:07,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:07:07,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:07:07,805 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 20:07:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:07:13,766 INFO L93 Difference]: Finished difference Result 226704 states and 458985 transitions. [2025-03-16 20:07:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:07:13,766 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 20:07:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:07:14,562 INFO L225 Difference]: With dead ends: 226704 [2025-03-16 20:07:14,562 INFO L226 Difference]: Without dead ends: 161689 [2025-03-16 20:07:14,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:07:14,820 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 20:07:14,820 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 20:07:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161689 states.