./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.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_label43+token_ring.05.cil-1.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 397165505e22c94185c98ac889a4a39846b9e873d477057714c221ff936752e7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:58:52,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:58:52,402 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:58:52,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:58:52,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:58:52,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:58:52,427 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:58:52,427 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:58:52,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:58:52,427 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:58:52,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:58:52,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:58:52,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:58:52,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:58:52,428 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:58:52,428 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:58:52,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:58:52,428 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:58:52,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:58:52,429 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:58:52,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:58:52,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:58:52,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:58:52,430 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 -> 397165505e22c94185c98ac889a4a39846b9e873d477057714c221ff936752e7 [2025-03-16 19:58:52,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:58:52,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:58:52,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:58:52,680 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:58:52,680 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:58:52,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c [2025-03-16 19:58:53,805 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0d10e6d/2d8152d801204a9f9c5435be08a32205/FLAG5353e5630 [2025-03-16 19:58:54,404 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:58:54,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.05.cil-1.c [2025-03-16 19:58:54,446 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0d10e6d/2d8152d801204a9f9c5435be08a32205/FLAG5353e5630 [2025-03-16 19:58:54,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0d10e6d/2d8152d801204a9f9c5435be08a32205 [2025-03-16 19:58:54,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:58:54,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:58:54,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:58:54,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:58:54,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:58:54,879 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:58:54" (1/1) ... [2025-03-16 19:58:54,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e94e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:54, skipping insertion in model container [2025-03-16 19:58:54,881 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:58:54" (1/1) ... [2025-03-16 19:58:55,000 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:58:56,039 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_label43+token_ring.05.cil-1.c[381679,381692] [2025-03-16 19:58:56,066 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_label43+token_ring.05.cil-1.c[383339,383352] [2025-03-16 19:58:56,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:58:56,238 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:58:56,766 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_label43+token_ring.05.cil-1.c[381679,381692] [2025-03-16 19:58:56,770 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_label43+token_ring.05.cil-1.c[383339,383352] [2025-03-16 19:58:56,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:58:56,876 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:58:56,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56 WrapperNode [2025-03-16 19:58:56,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:58:56,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:58:56,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:58:56,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:58:56,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:56,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,171 INFO L138 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12786 [2025-03-16 19:58:57,172 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:58:57,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:58:57,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:58:57,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:58:57,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,367 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:58:57,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,532 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,635 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:58:57,636 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:58:57,636 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:58:57,636 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:58:57,637 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (1/1) ... [2025-03-16 19:58:57,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:58:57,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:58:57,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 19:58:57,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 19:58:57,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:58:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 19:58:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 19:58:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 19:58:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 19:58:57,686 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 19:58:57,686 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 19:58:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 19:58:57,687 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 19:58:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 19:58:57,687 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 19:58:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 19:58:57,687 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 19:58:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:58:57,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:58:57,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:58:57,775 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:58:57,776 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:59:03,704 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 19:59:03,705 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 19:59:03,705 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 19:59:03,705 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 19:59:03,706 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 19:59:03,706 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 19:59:03,706 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 19:59:03,928 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2025-03-16 19:59:03,929 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:59:03,975 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:59:03,977 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:59:03,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:59:03 BoogieIcfgContainer [2025-03-16 19:59:03,978 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:59:03,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:59:03,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:59:03,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:59:03,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:58:54" (1/3) ... [2025-03-16 19:59:03,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4656ead7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:59:03, skipping insertion in model container [2025-03-16 19:59:03,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:58:56" (2/3) ... [2025-03-16 19:59:03,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4656ead7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:59:03, skipping insertion in model container [2025-03-16 19:59:03,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:59:03" (3/3) ... [2025-03-16 19:59:03,984 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.05.cil-1.c [2025-03-16 19:59:03,996 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:59:03,997 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.05.cil-1.c that has 7 procedures, 2316 locations, 1 initial locations, 9 loop locations, and 2 error locations. [2025-03-16 19:59:04,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:59:04,094 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;@41e6803, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:59:04,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 19:59:04,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 2316 states, 2289 states have (on average 1.875491480996068) internal successors, (4293), 2291 states have internal predecessors, (4293), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-16 19:59:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:04,114 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:04,114 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] [2025-03-16 19:59:04,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:04,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2125957295, now seen corresponding path program 1 times [2025-03-16 19:59:04,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:04,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164750293] [2025-03-16 19:59:04,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:04,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:04,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:04,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:04,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:04,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:04,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164750293] [2025-03-16 19:59:04,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164750293] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294112869] [2025-03-16 19:59:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:04,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:04,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:04,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:04,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:04,516 INFO L87 Difference]: Start difference. First operand has 2316 states, 2289 states have (on average 1.875491480996068) internal successors, (4293), 2291 states have internal predecessors, (4293), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:05,037 INFO L93 Difference]: Finished difference Result 4824 states and 8974 transitions. [2025-03-16 19:59:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 19:59:05,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:05,063 INFO L225 Difference]: With dead ends: 4824 [2025-03-16 19:59:05,063 INFO L226 Difference]: Without dead ends: 2511 [2025-03-16 19:59:05,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:05,076 INFO L435 NwaCegarLoop]: 4197 mSDtfsCounter, 4499 mSDsluCounter, 8510 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4512 SdHoareTripleChecker+Valid, 12707 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:05,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4512 Valid, 12707 Invalid, 369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:59:05,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2025-03-16 19:59:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2496. [2025-03-16 19:59:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2448 states have (on average 1.8284313725490196) internal successors, (4476), 2451 states have internal predecessors, (4476), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 19:59:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4543 transitions. [2025-03-16 19:59:05,201 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4543 transitions. Word has length 91 [2025-03-16 19:59:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:05,201 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 4543 transitions. [2025-03-16 19:59:05,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4543 transitions. [2025-03-16 19:59:05,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:05,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:05,205 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] [2025-03-16 19:59:05,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:59:05,205 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:05,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:05,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1419322797, now seen corresponding path program 1 times [2025-03-16 19:59:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:05,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260064076] [2025-03-16 19:59:05,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:05,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:05,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:05,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:05,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:05,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260064076] [2025-03-16 19:59:05,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260064076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:05,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:05,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273780873] [2025-03-16 19:59:05,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:05,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:05,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:05,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:05,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:05,366 INFO L87 Difference]: Start difference. First operand 2496 states and 4543 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:05,583 INFO L93 Difference]: Finished difference Result 2896 states and 5179 transitions. [2025-03-16 19:59:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:59:05,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:05,593 INFO L225 Difference]: With dead ends: 2896 [2025-03-16 19:59:05,594 INFO L226 Difference]: Without dead ends: 2532 [2025-03-16 19:59:05,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:05,596 INFO L435 NwaCegarLoop]: 4179 mSDtfsCounter, 4342 mSDsluCounter, 8273 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4355 SdHoareTripleChecker+Valid, 12452 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:05,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4355 Valid, 12452 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:59:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2025-03-16 19:59:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2496. [2025-03-16 19:59:05,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 2448 states have (on average 1.8276143790849673) internal successors, (4474), 2451 states have internal predecessors, (4474), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2025-03-16 19:59:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 4541 transitions. [2025-03-16 19:59:05,661 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 4541 transitions. Word has length 91 [2025-03-16 19:59:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:05,661 INFO L471 AbstractCegarLoop]: Abstraction has 2496 states and 4541 transitions. [2025-03-16 19:59:05,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 4541 transitions. [2025-03-16 19:59:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:05,666 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:05,666 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] [2025-03-16 19:59:05,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:59:05,666 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:05,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:05,667 INFO L85 PathProgramCache]: Analyzing trace with hash -310507598, now seen corresponding path program 1 times [2025-03-16 19:59:05,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:05,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283829338] [2025-03-16 19:59:05,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:05,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:05,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:05,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:05,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:05,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:05,801 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 19:59:05,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:05,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283829338] [2025-03-16 19:59:05,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283829338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:05,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:05,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:05,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928585462] [2025-03-16 19:59:05,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:05,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:05,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:05,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:05,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:05,804 INFO L87 Difference]: Start difference. First operand 2496 states and 4541 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:06,229 INFO L93 Difference]: Finished difference Result 3090 states and 5474 transitions. [2025-03-16 19:59:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:06,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:06,239 INFO L225 Difference]: With dead ends: 3090 [2025-03-16 19:59:06,240 INFO L226 Difference]: Without dead ends: 2726 [2025-03-16 19:59:06,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:06,242 INFO L435 NwaCegarLoop]: 4338 mSDtfsCounter, 4481 mSDsluCounter, 13004 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 17342 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:06,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4494 Valid, 17342 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:59:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2025-03-16 19:59:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2667. [2025-03-16 19:59:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2598 states have (on average 1.811008468052348) internal successors, (4705), 2602 states have internal predecessors, (4705), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (51), 48 states have call predecessors, (51), 47 states have call successors, (51) [2025-03-16 19:59:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 4803 transitions. [2025-03-16 19:59:06,305 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 4803 transitions. Word has length 91 [2025-03-16 19:59:06,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:06,306 INFO L471 AbstractCegarLoop]: Abstraction has 2667 states and 4803 transitions. [2025-03-16 19:59:06,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:06,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 4803 transitions. [2025-03-16 19:59:06,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:06,307 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:06,307 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] [2025-03-16 19:59:06,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:59:06,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:06,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash 556544627, now seen corresponding path program 1 times [2025-03-16 19:59:06,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:06,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690527644] [2025-03-16 19:59:06,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:06,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:06,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:06,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:06,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:06,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:06,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:06,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690527644] [2025-03-16 19:59:06,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690527644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:06,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:06,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:06,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131856351] [2025-03-16 19:59:06,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:06,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:06,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:06,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:06,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:06,477 INFO L87 Difference]: Start difference. First operand 2667 states and 4803 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:06,896 INFO L93 Difference]: Finished difference Result 3628 states and 6309 transitions. [2025-03-16 19:59:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:06,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:06,908 INFO L225 Difference]: With dead ends: 3628 [2025-03-16 19:59:06,909 INFO L226 Difference]: Without dead ends: 3093 [2025-03-16 19:59:06,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:06,912 INFO L435 NwaCegarLoop]: 4334 mSDtfsCounter, 4476 mSDsluCounter, 12992 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 17326 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:06,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 17326 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:59:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2025-03-16 19:59:06,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 3028. [2025-03-16 19:59:06,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2915 states have (on average 1.7831903945111491) internal successors, (5198), 2923 states have internal predecessors, (5198), 75 states have call successors, (75), 30 states have call predecessors, (75), 36 states have return successors, (91), 78 states have call predecessors, (91), 75 states have call successors, (91) [2025-03-16 19:59:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 5364 transitions. [2025-03-16 19:59:06,991 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 5364 transitions. Word has length 91 [2025-03-16 19:59:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:06,991 INFO L471 AbstractCegarLoop]: Abstraction has 3028 states and 5364 transitions. [2025-03-16 19:59:06,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:06,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 5364 transitions. [2025-03-16 19:59:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:06,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:06,995 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] [2025-03-16 19:59:06,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:59:06,995 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:06,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1000156050, now seen corresponding path program 1 times [2025-03-16 19:59:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:06,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461932873] [2025-03-16 19:59:06,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:07,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:07,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:07,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:07,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:07,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:07,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461932873] [2025-03-16 19:59:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461932873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:07,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:07,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214417689] [2025-03-16 19:59:07,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:07,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:07,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:07,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:07,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:07,118 INFO L87 Difference]: Start difference. First operand 3028 states and 5364 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:07,595 INFO L93 Difference]: Finished difference Result 4775 states and 8124 transitions. [2025-03-16 19:59:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:07,612 INFO L225 Difference]: With dead ends: 4775 [2025-03-16 19:59:07,612 INFO L226 Difference]: Without dead ends: 3879 [2025-03-16 19:59:07,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:07,617 INFO L435 NwaCegarLoop]: 4331 mSDtfsCounter, 4471 mSDsluCounter, 12983 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 17314 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:07,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4484 Valid, 17314 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:59:07,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2025-03-16 19:59:07,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3801. [2025-03-16 19:59:07,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3594 states have (on average 1.7434613244296049) internal successors, (6266), 3616 states have internal predecessors, (6266), 131 states have call successors, (131), 54 states have call predecessors, (131), 74 states have return successors, (195), 138 states have call predecessors, (195), 131 states have call successors, (195) [2025-03-16 19:59:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 6592 transitions. [2025-03-16 19:59:07,757 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 6592 transitions. Word has length 91 [2025-03-16 19:59:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:07,757 INFO L471 AbstractCegarLoop]: Abstraction has 3801 states and 6592 transitions. [2025-03-16 19:59:07,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 6592 transitions. [2025-03-16 19:59:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:07,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:07,760 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] [2025-03-16 19:59:07,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:59:07,761 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:07,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:07,761 INFO L85 PathProgramCache]: Analyzing trace with hash 44634771, now seen corresponding path program 1 times [2025-03-16 19:59:07,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:07,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150439874] [2025-03-16 19:59:07,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:07,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:07,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:07,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:07,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:07,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150439874] [2025-03-16 19:59:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150439874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:07,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718135839] [2025-03-16 19:59:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:07,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:07,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:07,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:07,967 INFO L87 Difference]: Start difference. First operand 3801 states and 6592 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:08,613 INFO L93 Difference]: Finished difference Result 7254 states and 12166 transitions. [2025-03-16 19:59:08,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:08,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:08,637 INFO L225 Difference]: With dead ends: 7254 [2025-03-16 19:59:08,638 INFO L226 Difference]: Without dead ends: 5585 [2025-03-16 19:59:08,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:08,646 INFO L435 NwaCegarLoop]: 4328 mSDtfsCounter, 4466 mSDsluCounter, 12974 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:08,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 17302 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:08,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5585 states. [2025-03-16 19:59:08,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5585 to 5482. [2025-03-16 19:59:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5482 states, 5069 states have (on average 1.699348984020517) internal successors, (8614), 5137 states have internal predecessors, (8614), 243 states have call successors, (243), 102 states have call predecessors, (243), 168 states have return successors, (499), 258 states have call predecessors, (499), 243 states have call successors, (499) [2025-03-16 19:59:08,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5482 states to 5482 states and 9356 transitions. [2025-03-16 19:59:08,822 INFO L78 Accepts]: Start accepts. Automaton has 5482 states and 9356 transitions. Word has length 91 [2025-03-16 19:59:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:08,822 INFO L471 AbstractCegarLoop]: Abstraction has 5482 states and 9356 transitions. [2025-03-16 19:59:08,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5482 states and 9356 transitions. [2025-03-16 19:59:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:08,825 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:08,826 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] [2025-03-16 19:59:08,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:59:08,826 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:08,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:08,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2064398478, now seen corresponding path program 1 times [2025-03-16 19:59:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:08,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921813145] [2025-03-16 19:59:08,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:08,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:08,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:08,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:08,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:08,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:08,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921813145] [2025-03-16 19:59:08,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921813145] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:08,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:08,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:08,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354564591] [2025-03-16 19:59:08,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:08,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:08,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:08,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:08,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:08,925 INFO L87 Difference]: Start difference. First operand 5482 states and 9356 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:09,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:09,565 INFO L93 Difference]: Finished difference Result 13237 states and 22329 transitions. [2025-03-16 19:59:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:09,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:09,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:09,614 INFO L225 Difference]: With dead ends: 13237 [2025-03-16 19:59:09,614 INFO L226 Difference]: Without dead ends: 9887 [2025-03-16 19:59:09,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:09,630 INFO L435 NwaCegarLoop]: 4323 mSDtfsCounter, 4607 mSDsluCounter, 12954 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4626 SdHoareTripleChecker+Valid, 17277 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:09,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4626 Valid, 17277 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:59:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9887 states. [2025-03-16 19:59:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9887 to 9147. [2025-03-16 19:59:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9147 states, 8284 states have (on average 1.6670690487687108) internal successors, (13810), 8498 states have internal predecessors, (13810), 451 states have call successors, (451), 198 states have call predecessors, (451), 410 states have return successors, (1475), 482 states have call predecessors, (1475), 451 states have call successors, (1475) [2025-03-16 19:59:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 15736 transitions. [2025-03-16 19:59:10,063 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 15736 transitions. Word has length 91 [2025-03-16 19:59:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:10,065 INFO L471 AbstractCegarLoop]: Abstraction has 9147 states and 15736 transitions. [2025-03-16 19:59:10,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 15736 transitions. [2025-03-16 19:59:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:10,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:10,072 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] [2025-03-16 19:59:10,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:59:10,073 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:10,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1746893491, now seen corresponding path program 1 times [2025-03-16 19:59:10,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:10,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515422544] [2025-03-16 19:59:10,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:10,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:10,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:10,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:10,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:10,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:10,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:10,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515422544] [2025-03-16 19:59:10,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515422544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:10,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:10,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:10,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240288368] [2025-03-16 19:59:10,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:10,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:10,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:10,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:10,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:10,174 INFO L87 Difference]: Start difference. First operand 9147 states and 15736 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:11,198 INFO L93 Difference]: Finished difference Result 25082 states and 44155 transitions. [2025-03-16 19:59:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:11,258 INFO L225 Difference]: With dead ends: 25082 [2025-03-16 19:59:11,258 INFO L226 Difference]: Without dead ends: 18067 [2025-03-16 19:59:11,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:11,277 INFO L435 NwaCegarLoop]: 4316 mSDtfsCounter, 4545 mSDsluCounter, 12935 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 17251 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:11,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 17251 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 19:59:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18067 states. [2025-03-16 19:59:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18067 to 17077. [2025-03-16 19:59:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.6458333333333333) internal successors, (24964), 15836 states have internal predecessors, (24964), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 19:59:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30762 transitions. [2025-03-16 19:59:12,146 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30762 transitions. Word has length 91 [2025-03-16 19:59:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:12,146 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30762 transitions. [2025-03-16 19:59:12,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30762 transitions. [2025-03-16 19:59:12,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:12,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:12,175 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] [2025-03-16 19:59:12,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:59:12,175 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:12,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:12,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1500580404, now seen corresponding path program 1 times [2025-03-16 19:59:12,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:12,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819743061] [2025-03-16 19:59:12,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:12,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:12,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:12,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:12,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:12,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:12,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819743061] [2025-03-16 19:59:12,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819743061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:12,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:12,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:12,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772433575] [2025-03-16 19:59:12,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:12,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:12,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:12,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:12,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:12,335 INFO L87 Difference]: Start difference. First operand 17077 states and 30762 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:13,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:13,298 INFO L93 Difference]: Finished difference Result 34946 states and 65430 transitions. [2025-03-16 19:59:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:59:13,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:13,377 INFO L225 Difference]: With dead ends: 34946 [2025-03-16 19:59:13,377 INFO L226 Difference]: Without dead ends: 20001 [2025-03-16 19:59:13,420 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:13,423 INFO L435 NwaCegarLoop]: 4162 mSDtfsCounter, 4330 mSDsluCounter, 8238 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4343 SdHoareTripleChecker+Valid, 12400 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:13,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4343 Valid, 12400 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:59:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20001 states. [2025-03-16 19:59:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20001 to 17077. [2025-03-16 19:59:14,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.6415479957805907) internal successors, (24899), 15836 states have internal predecessors, (24899), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 19:59:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30697 transitions. [2025-03-16 19:59:14,305 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30697 transitions. Word has length 91 [2025-03-16 19:59:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:14,306 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30697 transitions. [2025-03-16 19:59:14,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30697 transitions. [2025-03-16 19:59:14,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:14,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:14,315 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] [2025-03-16 19:59:14,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:59:14,316 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:14,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -169933165, now seen corresponding path program 1 times [2025-03-16 19:59:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:14,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417653663] [2025-03-16 19:59:14,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:14,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:14,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:14,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:14,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:14,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:14,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417653663] [2025-03-16 19:59:14,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417653663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:14,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:14,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 19:59:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623912563] [2025-03-16 19:59:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:14,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 19:59:14,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:14,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 19:59:14,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:14,465 INFO L87 Difference]: Start difference. First operand 17077 states and 30697 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:15,311 INFO L93 Difference]: Finished difference Result 34215 states and 63838 transitions. [2025-03-16 19:59:15,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:59:15,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:15,455 INFO L225 Difference]: With dead ends: 34215 [2025-03-16 19:59:15,455 INFO L226 Difference]: Without dead ends: 19270 [2025-03-16 19:59:15,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:15,481 INFO L435 NwaCegarLoop]: 4159 mSDtfsCounter, 4327 mSDsluCounter, 8233 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 12392 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:15,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 12392 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:59:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19270 states. [2025-03-16 19:59:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19270 to 17077. [2025-03-16 19:59:16,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17077 states, 15168 states have (on average 1.637262658227848) internal successors, (24834), 15836 states have internal predecessors, (24834), 851 states have call successors, (851), 390 states have call predecessors, (851), 1056 states have return successors, (4947), 914 states have call predecessors, (4947), 851 states have call successors, (4947) [2025-03-16 19:59:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 30632 transitions. [2025-03-16 19:59:16,600 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 30632 transitions. Word has length 91 [2025-03-16 19:59:16,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:16,600 INFO L471 AbstractCegarLoop]: Abstraction has 17077 states and 30632 transitions. [2025-03-16 19:59:16,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 30632 transitions. [2025-03-16 19:59:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:16,609 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:16,609 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] [2025-03-16 19:59:16,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:59:16,610 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:16,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:16,610 INFO L85 PathProgramCache]: Analyzing trace with hash -778010028, now seen corresponding path program 1 times [2025-03-16 19:59:16,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:16,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894163866] [2025-03-16 19:59:16,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:16,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:16,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:16,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:16,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:16,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:16,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:16,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894163866] [2025-03-16 19:59:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894163866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:16,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:16,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 19:59:16,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533378857] [2025-03-16 19:59:16,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:16,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 19:59:16,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:16,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 19:59:16,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 19:59:16,700 INFO L87 Difference]: Start difference. First operand 17077 states and 30632 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:18,194 INFO L93 Difference]: Finished difference Result 48626 states and 93277 transitions. [2025-03-16 19:59:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 19:59:18,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2025-03-16 19:59:18,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:18,346 INFO L225 Difference]: With dead ends: 48626 [2025-03-16 19:59:18,346 INFO L226 Difference]: Without dead ends: 33681 [2025-03-16 19:59:18,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 19:59:18,386 INFO L435 NwaCegarLoop]: 4303 mSDtfsCounter, 4443 mSDsluCounter, 12898 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 17201 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:18,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4462 Valid, 17201 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 19:59:18,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33681 states. [2025-03-16 19:59:20,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33681 to 33084. [2025-03-16 19:59:20,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33084 states, 28629 states have (on average 1.6048761745083657) internal successors, (45946), 30691 states have internal predecessors, (45946), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 2834 states have return successors, (18003), 1746 states have call predecessors, (18003), 1619 states have call successors, (18003) [2025-03-16 19:59:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33084 states to 33084 states and 65568 transitions. [2025-03-16 19:59:20,708 INFO L78 Accepts]: Start accepts. Automaton has 33084 states and 65568 transitions. Word has length 91 [2025-03-16 19:59:20,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:20,709 INFO L471 AbstractCegarLoop]: Abstraction has 33084 states and 65568 transitions. [2025-03-16 19:59:20,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 33084 states and 65568 transitions. [2025-03-16 19:59:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-16 19:59:20,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:20,729 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:20,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:59:20,730 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:20,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:20,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1003489907, now seen corresponding path program 1 times [2025-03-16 19:59:20,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:20,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49818615] [2025-03-16 19:59:20,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:20,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:20,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-16 19:59:20,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-16 19:59:20,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:20,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:59:20,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:20,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49818615] [2025-03-16 19:59:20,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49818615] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:20,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:59:20,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:59:20,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638233801] [2025-03-16 19:59:20,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:20,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:59:20,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:20,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:59:20,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:59:20,802 INFO L87 Difference]: Start difference. First operand 33084 states and 65568 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:23,629 INFO L93 Difference]: Finished difference Result 94467 states and 189396 transitions. [2025-03-16 19:59:23,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:59:23,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 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 91 [2025-03-16 19:59:23,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:23,901 INFO L225 Difference]: With dead ends: 94467 [2025-03-16 19:59:23,902 INFO L226 Difference]: Without dead ends: 63516 [2025-03-16 19:59:24,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:59:24,004 INFO L435 NwaCegarLoop]: 4503 mSDtfsCounter, 4464 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 8935 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:24,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 8935 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:59:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63516 states. [2025-03-16 19:59:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63516 to 63387. [2025-03-16 19:59:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63387 states, 54483 states have (on average 1.5828974175430868) internal successors, (86241), 58734 states have internal predecessors, (86241), 3234 states have call successors, (3234), 1548 states have call predecessors, (3234), 5668 states have return successors, (35875), 3232 states have call predecessors, (35875), 3234 states have call successors, (35875) [2025-03-16 19:59:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63387 states to 63387 states and 125350 transitions. [2025-03-16 19:59:28,212 INFO L78 Accepts]: Start accepts. Automaton has 63387 states and 125350 transitions. Word has length 91 [2025-03-16 19:59:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:28,212 INFO L471 AbstractCegarLoop]: Abstraction has 63387 states and 125350 transitions. [2025-03-16 19:59:28,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 19:59:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 63387 states and 125350 transitions. [2025-03-16 19:59:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 19:59:28,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:28,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:28,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:59:28,322 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:28,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash -282382986, now seen corresponding path program 1 times [2025-03-16 19:59:28,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:28,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099243085] [2025-03-16 19:59:28,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:28,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:28,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 19:59:28,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 19:59:28,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:28,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:59:28,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099243085] [2025-03-16 19:59:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099243085] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:59:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870874358] [2025-03-16 19:59:28,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:28,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:59:28,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:59:28,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:59:28,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 19:59:28,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 19:59:28,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 19:59:28,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:28,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:28,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:59:28,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:59:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 19:59:28,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:59:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870874358] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:28,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:59:28,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 19:59:28,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844687058] [2025-03-16 19:59:28,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:28,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:59:28,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:28,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:59:28,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:28,607 INFO L87 Difference]: Start difference. First operand 63387 states and 125350 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:59:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:59:33,599 INFO L93 Difference]: Finished difference Result 184604 states and 367582 transitions. [2025-03-16 19:59:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:59:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2025-03-16 19:59:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:59:34,153 INFO L225 Difference]: With dead ends: 184604 [2025-03-16 19:59:34,153 INFO L226 Difference]: Without dead ends: 123350 [2025-03-16 19:59:34,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:34,331 INFO L435 NwaCegarLoop]: 4246 mSDtfsCounter, 4200 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4200 SdHoareTripleChecker+Valid, 4508 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:59:34,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4200 Valid, 4508 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:59:34,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123350 states. [2025-03-16 19:59:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123350 to 123090. [2025-03-16 19:59:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123090 states, 105546 states have (on average 1.5769806529854282) internal successors, (166444), 114046 states have internal predecessors, (166444), 6206 states have call successors, (6206), 3096 states have call predecessors, (6206), 11336 states have return successors, (71361), 6075 states have call predecessors, (71361), 6206 states have call successors, (71361) [2025-03-16 19:59:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123090 states to 123090 states and 244011 transitions. [2025-03-16 19:59:41,256 INFO L78 Accepts]: Start accepts. Automaton has 123090 states and 244011 transitions. Word has length 147 [2025-03-16 19:59:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:59:41,257 INFO L471 AbstractCegarLoop]: Abstraction has 123090 states and 244011 transitions. [2025-03-16 19:59:41,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 19:59:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 123090 states and 244011 transitions. [2025-03-16 19:59:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-16 19:59:41,362 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:59:41,364 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:59:41,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 19:59:41,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 19:59:41,565 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:59:41,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:59:41,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1766099388, now seen corresponding path program 1 times [2025-03-16 19:59:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:59:41,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279900541] [2025-03-16 19:59:41,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:41,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:59:41,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 19:59:41,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 19:59:41,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:41,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 19:59:41,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:59:41,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279900541] [2025-03-16 19:59:41,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279900541] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 19:59:41,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890417667] [2025-03-16 19:59:41,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:59:41,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 19:59:41,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:59:41,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 19:59:41,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 19:59:41,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-16 19:59:41,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-16 19:59:41,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:59:41,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:59:41,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 19:59:41,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 19:59:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-16 19:59:41,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 19:59:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890417667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:59:41,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 19:59:41,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-16 19:59:41,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509994866] [2025-03-16 19:59:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:59:41,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:59:41,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:59:41,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:59:41,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 19:59:41,801 INFO L87 Difference]: Start difference. First operand 123090 states and 244011 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)