./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.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_label44+token_ring.09.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 eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 20:00:44,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 20:00:44,693 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 20:00:44,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 20:00:44,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 20:00:44,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 20:00:44,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 20:00:44,715 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 20:00:44,715 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 20:00:44,716 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 20:00:44,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 20:00:44,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 20:00:44,716 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 20:00:44,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 20:00:44,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 20:00:44,718 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:00:44,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 20:00:44,718 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 20:00:44,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 20:00:44,719 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 -> eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e [2025-03-16 20:00:44,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 20:00:44,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 20:00:44,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 20:00:44,926 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 20:00:44,926 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 20:00:44,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2025-03-16 20:00:46,039 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9745266e7/1ce7fb1c5d7a4caf97c55050f1dd8e3e/FLAGa176422ac [2025-03-16 20:00:46,617 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 20:00:46,619 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2025-03-16 20:00:46,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9745266e7/1ce7fb1c5d7a4caf97c55050f1dd8e3e/FLAGa176422ac [2025-03-16 20:00:47,109 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9745266e7/1ce7fb1c5d7a4caf97c55050f1dd8e3e [2025-03-16 20:00:47,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 20:00:47,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 20:00:47,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 20:00:47,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 20:00:47,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 20:00:47,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:00:47" (1/1) ... [2025-03-16 20:00:47,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649ffb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:47, skipping insertion in model container [2025-03-16 20:00:47,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 08:00:47" (1/1) ... [2025-03-16 20:00:47,232 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 20:00:48,251 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_label44+token_ring.09.cil-1.c[377340,377353] [2025-03-16 20:00:48,282 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_label44+token_ring.09.cil-1.c[383339,383352] [2025-03-16 20:00:48,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:00:48,485 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 20:00:48,973 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_label44+token_ring.09.cil-1.c[377340,377353] [2025-03-16 20:00:48,980 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_label44+token_ring.09.cil-1.c[383339,383352] [2025-03-16 20:00:49,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 20:00:49,046 INFO L204 MainTranslator]: Completed translation [2025-03-16 20:00:49,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49 WrapperNode [2025-03-16 20:00:49,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 20:00:49,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 20:00:49,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 20:00:49,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 20:00:49,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,411 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13014 [2025-03-16 20:00:49,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 20:00:49,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 20:00:49,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 20:00:49,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 20:00:49,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,630 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 20:00:49,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,756 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 20:00:49,865 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 20:00:49,865 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 20:00:49,865 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 20:00:49,866 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (1/1) ... [2025-03-16 20:00:49,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 20:00:49,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 20:00:49,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 20:00:49,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 20:00:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 20:00:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-03-16 20:00:49,905 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-03-16 20:00:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-03-16 20:00:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-03-16 20:00:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-03-16 20:00:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-03-16 20:00:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-03-16 20:00:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-03-16 20:00:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-03-16 20:00:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-03-16 20:00:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-03-16 20:00:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-03-16 20:00:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 20:00:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 20:00:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 20:00:49,998 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 20:00:50,000 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 20:00:55,720 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-03-16 20:00:55,720 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-03-16 20:00:55,720 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-03-16 20:00:55,720 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-03-16 20:00:55,721 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-03-16 20:00:55,721 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-03-16 20:00:55,721 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-03-16 20:00:55,904 INFO L? ?]: Removed 1725 outVars from TransFormulas that were not future-live. [2025-03-16 20:00:55,904 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 20:00:55,958 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 20:00:55,959 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 20:00:55,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:00:55 BoogieIcfgContainer [2025-03-16 20:00:55,959 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 20:00:55,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 20:00:55,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 20:00:56,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 20:00:56,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 08:00:47" (1/3) ... [2025-03-16 20:00:56,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464774b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:00:56, skipping insertion in model container [2025-03-16 20:00:56,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 08:00:49" (2/3) ... [2025-03-16 20:00:56,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464774b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 08:00:56, skipping insertion in model container [2025-03-16 20:00:56,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 08:00:55" (3/3) ... [2025-03-16 20:00:56,010 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.09.cil-1.c [2025-03-16 20:00:56,020 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 20:00:56,022 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label44+token_ring.09.cil-1.c that has 7 procedures, 2412 locations, 1 initial locations, 13 loop locations, and 2 error locations. [2025-03-16 20:00:56,107 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 20:00:56,114 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;@26bf7c5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 20:00:56,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-16 20:00:56,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 2412 states, 2381 states have (on average 1.868542629147417) internal successors, (4449), 2383 states have internal predecessors, (4449), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-16 20:00:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:00:56,132 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:56,132 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:56,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:56,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash -838048785, now seen corresponding path program 1 times [2025-03-16 20:00:56,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:56,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640808045] [2025-03-16 20:00:56,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:56,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:00:56,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:00:56,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:56,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:56,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640808045] [2025-03-16 20:00:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640808045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:56,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:00:56,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094138154] [2025-03-16 20:00:56,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:56,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:00:56,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:56,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:00:56,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:00:56,586 INFO L87 Difference]: Start difference. First operand has 2412 states, 2381 states have (on average 1.868542629147417) internal successors, (4449), 2383 states have internal predecessors, (4449), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:57,212 INFO L93 Difference]: Finished difference Result 5120 states and 9482 transitions. [2025-03-16 20:00:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 20:00:57,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2025-03-16 20:00:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:57,242 INFO L225 Difference]: With dead ends: 5120 [2025-03-16 20:00:57,242 INFO L226 Difference]: Without dead ends: 2715 [2025-03-16 20:00:57,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:57,258 INFO L435 NwaCegarLoop]: 4325 mSDtfsCounter, 4827 mSDsluCounter, 8846 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4844 SdHoareTripleChecker+Valid, 13171 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:57,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4844 Valid, 13171 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:00:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2025-03-16 20:00:57,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2692. [2025-03-16 20:00:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2636 states have (on average 1.8163884673748103) internal successors, (4788), 2639 states have internal predecessors, (4788), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2025-03-16 20:00:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4871 transitions. [2025-03-16 20:00:57,385 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4871 transitions. Word has length 131 [2025-03-16 20:00:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:57,386 INFO L471 AbstractCegarLoop]: Abstraction has 2692 states and 4871 transitions. [2025-03-16 20:00:57,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4871 transitions. [2025-03-16 20:00:57,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:00:57,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:57,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:57,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 20:00:57,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:57,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1792194191, now seen corresponding path program 1 times [2025-03-16 20:00:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:57,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257189482] [2025-03-16 20:00:57,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:57,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:00:57,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:00:57,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:57,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:57,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:57,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257189482] [2025-03-16 20:00:57,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257189482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:57,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:57,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322076694] [2025-03-16 20:00:57,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:57,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:57,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:57,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:57,596 INFO L87 Difference]: Start difference. First operand 2692 states and 4871 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:58,210 INFO L93 Difference]: Finished difference Result 3610 states and 6360 transitions. [2025-03-16 20:00:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:58,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:00:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:58,222 INFO L225 Difference]: With dead ends: 3610 [2025-03-16 20:00:58,223 INFO L226 Difference]: Without dead ends: 3054 [2025-03-16 20:00:58,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:58,226 INFO L435 NwaCegarLoop]: 4559 mSDtfsCounter, 4822 mSDsluCounter, 13704 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 18263 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:58,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4839 Valid, 18263 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:00:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2025-03-16 20:00:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2955. [2025-03-16 20:00:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2874 states have (on average 1.7967988865692415) internal successors, (5164), 2878 states have internal predecessors, (5164), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (63), 60 states have call predecessors, (63), 59 states have call successors, (63) [2025-03-16 20:00:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 5286 transitions. [2025-03-16 20:00:58,300 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 5286 transitions. Word has length 131 [2025-03-16 20:00:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:58,300 INFO L471 AbstractCegarLoop]: Abstraction has 2955 states and 5286 transitions. [2025-03-16 20:00:58,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 5286 transitions. [2025-03-16 20:00:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:00:58,304 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:58,304 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:58,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 20:00:58,304 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:58,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1679091634, now seen corresponding path program 1 times [2025-03-16 20:00:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:58,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046628925] [2025-03-16 20:00:58,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:58,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:58,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:00:58,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:00:58,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:58,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:58,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:58,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046628925] [2025-03-16 20:00:58,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046628925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:58,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:58,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:58,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639951604] [2025-03-16 20:00:58,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:58,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:58,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:58,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:58,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:58,467 INFO L87 Difference]: Start difference. First operand 2955 states and 5286 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:59,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:00:59,167 INFO L93 Difference]: Finished difference Result 4448 states and 7702 transitions. [2025-03-16 20:00:59,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:00:59,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:00:59,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:00:59,186 INFO L225 Difference]: With dead ends: 4448 [2025-03-16 20:00:59,186 INFO L226 Difference]: Without dead ends: 3629 [2025-03-16 20:00:59,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:00:59,191 INFO L435 NwaCegarLoop]: 4555 mSDtfsCounter, 4817 mSDsluCounter, 13692 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 18247 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:00:59,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4834 Valid, 18247 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:00:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2025-03-16 20:00:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3516. [2025-03-16 20:00:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3516 states, 3383 states have (on average 1.767366242979604) internal successors, (5979), 3391 states have internal predecessors, (5979), 95 states have call successors, (95), 30 states have call predecessors, (95), 36 states have return successors, (111), 98 states have call predecessors, (111), 95 states have call successors, (111) [2025-03-16 20:00:59,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3516 states to 3516 states and 6185 transitions. [2025-03-16 20:00:59,300 INFO L78 Accepts]: Start accepts. Automaton has 3516 states and 6185 transitions. Word has length 131 [2025-03-16 20:00:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:00:59,301 INFO L471 AbstractCegarLoop]: Abstraction has 3516 states and 6185 transitions. [2025-03-16 20:00:59,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:00:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3516 states and 6185 transitions. [2025-03-16 20:00:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:00:59,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:00:59,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:00:59,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 20:00:59,303 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:00:59,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:00:59,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1534067375, now seen corresponding path program 1 times [2025-03-16 20:00:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:00:59,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012932821] [2025-03-16 20:00:59,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:00:59,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:00:59,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:00:59,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:00:59,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:00:59,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:00:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:00:59,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:00:59,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012932821] [2025-03-16 20:00:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012932821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:00:59,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:00:59,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:00:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240231845] [2025-03-16 20:00:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:00:59,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:00:59,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:00:59,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:00:59,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:00:59,463 INFO L87 Difference]: Start difference. First operand 3516 states and 6185 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:00,121 INFO L93 Difference]: Finished difference Result 6259 states and 10659 transitions. [2025-03-16 20:01:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:01:00,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:00,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:00,142 INFO L225 Difference]: With dead ends: 6259 [2025-03-16 20:01:00,143 INFO L226 Difference]: Without dead ends: 4879 [2025-03-16 20:01:00,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:01:00,150 INFO L435 NwaCegarLoop]: 4552 mSDtfsCounter, 4812 mSDsluCounter, 13683 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4829 SdHoareTripleChecker+Valid, 18235 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:00,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4829 Valid, 18235 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:01:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2025-03-16 20:01:00,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4737. [2025-03-16 20:01:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4737 states, 4494 states have (on average 1.7327547841566533) internal successors, (7787), 4516 states have internal predecessors, (7787), 167 states have call successors, (167), 54 states have call predecessors, (167), 74 states have return successors, (231), 174 states have call predecessors, (231), 167 states have call successors, (231) [2025-03-16 20:01:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 8185 transitions. [2025-03-16 20:01:00,322 INFO L78 Accepts]: Start accepts. Automaton has 4737 states and 8185 transitions. Word has length 131 [2025-03-16 20:01:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:00,322 INFO L471 AbstractCegarLoop]: Abstraction has 4737 states and 8185 transitions. [2025-03-16 20:01:00,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4737 states and 8185 transitions. [2025-03-16 20:01:00,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:00,325 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:00,325 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:00,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 20:01:00,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:00,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2053359662, now seen corresponding path program 1 times [2025-03-16 20:01:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:00,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54109933] [2025-03-16 20:01:00,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:00,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:00,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:00,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:00,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:00,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:00,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:00,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54109933] [2025-03-16 20:01:00,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54109933] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:00,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:00,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:01:00,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490468115] [2025-03-16 20:01:00,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:00,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:01:00,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:00,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:01:00,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:00,472 INFO L87 Difference]: Start difference. First operand 4737 states and 8185 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:01,058 INFO L93 Difference]: Finished difference Result 10258 states and 17369 transitions. [2025-03-16 20:01:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:01:01,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:01,089 INFO L225 Difference]: With dead ends: 10258 [2025-03-16 20:01:01,089 INFO L226 Difference]: Without dead ends: 7657 [2025-03-16 20:01:01,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:01:01,100 INFO L435 NwaCegarLoop]: 4549 mSDtfsCounter, 4807 mSDsluCounter, 13674 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4824 SdHoareTripleChecker+Valid, 18223 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:01,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4824 Valid, 18223 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:01:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2025-03-16 20:01:01,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 7458. [2025-03-16 20:01:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 6977 states have (on average 1.706034112082557) internal successors, (11903), 7045 states have internal predecessors, (11903), 311 states have call successors, (311), 102 states have call predecessors, (311), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2025-03-16 20:01:01,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 12781 transitions. [2025-03-16 20:01:01,352 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 12781 transitions. Word has length 131 [2025-03-16 20:01:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:01,352 INFO L471 AbstractCegarLoop]: Abstraction has 7458 states and 12781 transitions. [2025-03-16 20:01:01,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 12781 transitions. [2025-03-16 20:01:01,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:01,358 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:01,358 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:01,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 20:01:01,358 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:01,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1255024945, now seen corresponding path program 1 times [2025-03-16 20:01:01,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:01,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266566575] [2025-03-16 20:01:01,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:01,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:01,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:01,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:01,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:01,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:01,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:01,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266566575] [2025-03-16 20:01:01,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266566575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:01,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:01,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:01:01,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364719329] [2025-03-16 20:01:01,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:01,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:01:01,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:01,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:01:01,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:01,484 INFO L87 Difference]: Start difference. First operand 7458 states and 12781 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:02,130 INFO L93 Difference]: Finished difference Result 19313 states and 33155 transitions. [2025-03-16 20:01:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:01:02,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:02,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:02,187 INFO L225 Difference]: With dead ends: 19313 [2025-03-16 20:01:02,187 INFO L226 Difference]: Without dead ends: 13991 [2025-03-16 20:01:02,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:01:02,211 INFO L435 NwaCegarLoop]: 4546 mSDtfsCounter, 4802 mSDsluCounter, 13665 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4819 SdHoareTripleChecker+Valid, 18211 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:02,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4819 Valid, 18211 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:01:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2025-03-16 20:01:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 13683. [2025-03-16 20:01:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.699100378787879) internal successors, (21531), 12886 states have internal predecessors, (21531), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 20:01:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23753 transitions. [2025-03-16 20:01:02,668 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23753 transitions. Word has length 131 [2025-03-16 20:01:02,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:02,668 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23753 transitions. [2025-03-16 20:01:02,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:02,669 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23753 transitions. [2025-03-16 20:01:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:02,675 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:02,676 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:02,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 20:01:02,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:02,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1963388942, now seen corresponding path program 1 times [2025-03-16 20:01:02,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:02,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021008197] [2025-03-16 20:01:02,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:02,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:02,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:02,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:02,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021008197] [2025-03-16 20:01:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021008197] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:02,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:02,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:01:02,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394308406] [2025-03-16 20:01:02,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:02,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:01:02,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:02,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:01:02,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:02,778 INFO L87 Difference]: Start difference. First operand 13683 states and 23753 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:03,217 INFO L93 Difference]: Finished difference Result 28660 states and 50738 transitions. [2025-03-16 20:01:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:01:03,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:03,278 INFO L225 Difference]: With dead ends: 28660 [2025-03-16 20:01:03,278 INFO L226 Difference]: Without dead ends: 17113 [2025-03-16 20:01:03,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:03,316 INFO L435 NwaCegarLoop]: 4295 mSDtfsCounter, 4564 mSDsluCounter, 8465 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 12760 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:03,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 12760 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:01:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17113 states. [2025-03-16 20:01:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17113 to 13683. [2025-03-16 20:01:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.6964962121212122) internal successors, (21498), 12886 states have internal predecessors, (21498), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 20:01:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23720 transitions. [2025-03-16 20:01:03,831 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23720 transitions. Word has length 131 [2025-03-16 20:01:03,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:03,832 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23720 transitions. [2025-03-16 20:01:03,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:03,832 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23720 transitions. [2025-03-16 20:01:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:03,837 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:03,837 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:03,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 20:01:03,838 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:03,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash -127546095, now seen corresponding path program 1 times [2025-03-16 20:01:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059264958] [2025-03-16 20:01:03,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:03,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:03,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:03,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:03,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:03,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:03,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059264958] [2025-03-16 20:01:03,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059264958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:03,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:01:03,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096939067] [2025-03-16 20:01:03,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:03,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:01:03,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:03,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:01:03,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:03,918 INFO L87 Difference]: Start difference. First operand 13683 states and 23720 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:04,350 INFO L93 Difference]: Finished difference Result 28415 states and 50182 transitions. [2025-03-16 20:01:04,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:01:04,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:04,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:04,407 INFO L225 Difference]: With dead ends: 28415 [2025-03-16 20:01:04,407 INFO L226 Difference]: Without dead ends: 16868 [2025-03-16 20:01:04,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:04,516 INFO L435 NwaCegarLoop]: 4292 mSDtfsCounter, 4561 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 12752 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:04,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 12752 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:01:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16868 states. [2025-03-16 20:01:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16868 to 13683. [2025-03-16 20:01:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13683 states, 12672 states have (on average 1.6938920454545454) internal successors, (21465), 12886 states have internal predecessors, (21465), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2025-03-16 20:01:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13683 states to 13683 states and 23687 transitions. [2025-03-16 20:01:05,074 INFO L78 Accepts]: Start accepts. Automaton has 13683 states and 23687 transitions. Word has length 131 [2025-03-16 20:01:05,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:05,075 INFO L471 AbstractCegarLoop]: Abstraction has 13683 states and 23687 transitions. [2025-03-16 20:01:05,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:05,075 INFO L276 IsEmpty]: Start isEmpty. Operand 13683 states and 23687 transitions. [2025-03-16 20:01:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:05,081 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:05,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:05,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 20:01:05,081 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:05,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:05,082 INFO L85 PathProgramCache]: Analyzing trace with hash -68325358, now seen corresponding path program 1 times [2025-03-16 20:01:05,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:05,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342712080] [2025-03-16 20:01:05,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:05,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:05,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:05,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:05,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:05,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:05,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:05,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342712080] [2025-03-16 20:01:05,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342712080] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:05,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:05,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:01:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455151668] [2025-03-16 20:01:05,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:05,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:01:05,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:05,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:01:05,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:05,218 INFO L87 Difference]: Start difference. First operand 13683 states and 23687 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:06,359 INFO L93 Difference]: Finished difference Result 41402 states and 73032 transitions. [2025-03-16 20:01:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:01:06,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:06,448 INFO L225 Difference]: With dead ends: 41402 [2025-03-16 20:01:06,448 INFO L226 Difference]: Without dead ends: 29855 [2025-03-16 20:01:06,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:01:06,477 INFO L435 NwaCegarLoop]: 4527 mSDtfsCounter, 5032 mSDsluCounter, 13607 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5059 SdHoareTripleChecker+Valid, 18134 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:06,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5059 Valid, 18134 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 20:01:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29855 states. [2025-03-16 20:01:07,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29855 to 27495. [2025-03-16 20:01:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27495 states, 25294 states have (on average 1.7002846524867556) internal successors, (43007), 25962 states have internal predecessors, (43007), 1143 states have call successors, (1143), 390 states have call predecessors, (1143), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-16 20:01:07,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27495 states to 27495 states and 49389 transitions. [2025-03-16 20:01:07,373 INFO L78 Accepts]: Start accepts. Automaton has 27495 states and 49389 transitions. Word has length 131 [2025-03-16 20:01:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:07,373 INFO L471 AbstractCegarLoop]: Abstraction has 27495 states and 49389 transitions. [2025-03-16 20:01:07,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 27495 states and 49389 transitions. [2025-03-16 20:01:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:07,387 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:07,387 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:07,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 20:01:07,388 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:07,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:07,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1062461267, now seen corresponding path program 1 times [2025-03-16 20:01:07,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:07,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258071790] [2025-03-16 20:01:07,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:07,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:07,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:07,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:07,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:07,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:07,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258071790] [2025-03-16 20:01:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258071790] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:07,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:07,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:01:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272223553] [2025-03-16 20:01:07,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:07,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:01:07,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:07,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:01:07,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:07,492 INFO L87 Difference]: Start difference. First operand 27495 states and 49389 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:08,496 INFO L93 Difference]: Finished difference Result 60164 states and 111448 transitions. [2025-03-16 20:01:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:01:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:08,605 INFO L225 Difference]: With dead ends: 60164 [2025-03-16 20:01:08,605 INFO L226 Difference]: Without dead ends: 34805 [2025-03-16 20:01:08,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:08,657 INFO L435 NwaCegarLoop]: 4285 mSDtfsCounter, 4554 mSDsluCounter, 8445 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4571 SdHoareTripleChecker+Valid, 12730 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:08,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4571 Valid, 12730 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:01:08,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34805 states. [2025-03-16 20:01:09,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34805 to 27495. [2025-03-16 20:01:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27495 states, 25294 states have (on average 1.697714873092433) internal successors, (42942), 25962 states have internal predecessors, (42942), 1143 states have call successors, (1143), 390 states have call predecessors, (1143), 1056 states have return successors, (5239), 1206 states have call predecessors, (5239), 1143 states have call successors, (5239) [2025-03-16 20:01:10,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27495 states to 27495 states and 49324 transitions. [2025-03-16 20:01:10,022 INFO L78 Accepts]: Start accepts. Automaton has 27495 states and 49324 transitions. Word has length 131 [2025-03-16 20:01:10,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:10,022 INFO L471 AbstractCegarLoop]: Abstraction has 27495 states and 49324 transitions. [2025-03-16 20:01:10,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:10,023 INFO L276 IsEmpty]: Start isEmpty. Operand 27495 states and 49324 transitions. [2025-03-16 20:01:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:10,033 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:10,034 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:10,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 20:01:10,034 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:10,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 129106930, now seen corresponding path program 1 times [2025-03-16 20:01:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:10,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67040513] [2025-03-16 20:01:10,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:10,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:10,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:10,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:10,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:10,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:10,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67040513] [2025-03-16 20:01:10,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67040513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:10,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:10,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:01:10,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291204220] [2025-03-16 20:01:10,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:10,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:01:10,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:10,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:01:10,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:10,146 INFO L87 Difference]: Start difference. First operand 27495 states and 49324 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:12,335 INFO L93 Difference]: Finished difference Result 88032 states and 164633 transitions. [2025-03-16 20:01:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:01:12,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:12,653 INFO L225 Difference]: With dead ends: 88032 [2025-03-16 20:01:12,653 INFO L226 Difference]: Without dead ends: 62673 [2025-03-16 20:01:12,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:01:12,773 INFO L435 NwaCegarLoop]: 4519 mSDtfsCounter, 4965 mSDsluCounter, 13584 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4992 SdHoareTripleChecker+Valid, 18103 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:12,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4992 Valid, 18103 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:01:12,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62673 states. [2025-03-16 20:01:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62673 to 58911. [2025-03-16 20:01:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7110401663078179) internal successors, (92184), 55938 states have internal predecessors, (92184), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 20:01:15,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112966 transitions. [2025-03-16 20:01:15,170 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112966 transitions. Word has length 131 [2025-03-16 20:01:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:15,170 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112966 transitions. [2025-03-16 20:01:15,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:15,170 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112966 transitions. [2025-03-16 20:01:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:15,184 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:15,184 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:15,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 20:01:15,185 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:15,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1623019379, now seen corresponding path program 1 times [2025-03-16 20:01:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503738655] [2025-03-16 20:01:15,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:15,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:15,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:15,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:15,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:15,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:15,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:15,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503738655] [2025-03-16 20:01:15,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503738655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:15,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:15,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:01:15,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914632116] [2025-03-16 20:01:15,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:15,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:01:15,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:15,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:01:15,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:15,251 INFO L87 Difference]: Start difference. First operand 58911 states and 112966 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:18,594 INFO L93 Difference]: Finished difference Result 133198 states and 267048 transitions. [2025-03-16 20:01:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:01:18,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:18,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:19,022 INFO L225 Difference]: With dead ends: 133198 [2025-03-16 20:01:19,022 INFO L226 Difference]: Without dead ends: 76423 [2025-03-16 20:01:19,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:19,248 INFO L435 NwaCegarLoop]: 4280 mSDtfsCounter, 4550 mSDsluCounter, 8436 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4567 SdHoareTripleChecker+Valid, 12716 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:19,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4567 Valid, 12716 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:01:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76423 states. [2025-03-16 20:01:22,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76423 to 58911. [2025-03-16 20:01:22,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7086457791966738) internal successors, (92055), 55938 states have internal predecessors, (92055), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 20:01:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112837 transitions. [2025-03-16 20:01:22,474 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112837 transitions. Word has length 131 [2025-03-16 20:01:22,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:22,474 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112837 transitions. [2025-03-16 20:01:22,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112837 transitions. [2025-03-16 20:01:22,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:22,491 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:22,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:22,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 20:01:22,491 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:22,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:22,492 INFO L85 PathProgramCache]: Analyzing trace with hash 424284114, now seen corresponding path program 1 times [2025-03-16 20:01:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:22,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153871952] [2025-03-16 20:01:22,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:22,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:22,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:22,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:22,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:22,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:22,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:22,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153871952] [2025-03-16 20:01:22,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153871952] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:22,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:22,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 20:01:22,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700194070] [2025-03-16 20:01:22,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:22,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 20:01:22,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:22,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 20:01:22,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 20:01:22,555 INFO L87 Difference]: Start difference. First operand 58911 states and 112837 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:25,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:25,783 INFO L93 Difference]: Finished difference Result 131009 states and 262412 transitions. [2025-03-16 20:01:25,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 20:01:25,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:25,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:26,041 INFO L225 Difference]: With dead ends: 131009 [2025-03-16 20:01:26,041 INFO L226 Difference]: Without dead ends: 74234 [2025-03-16 20:01:26,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:26,143 INFO L435 NwaCegarLoop]: 4277 mSDtfsCounter, 4547 mSDsluCounter, 8431 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 12708 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:26,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4564 Valid, 12708 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 20:01:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74234 states. [2025-03-16 20:01:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74234 to 58911. [2025-03-16 20:01:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58911 states, 53876 states have (on average 1.7062513920855298) internal successors, (91926), 55938 states have internal predecessors, (91926), 2199 states have call successors, (2199), 774 states have call predecessors, (2199), 2834 states have return successors, (18583), 2326 states have call predecessors, (18583), 2199 states have call successors, (18583) [2025-03-16 20:01:29,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58911 states to 58911 states and 112708 transitions. [2025-03-16 20:01:29,266 INFO L78 Accepts]: Start accepts. Automaton has 58911 states and 112708 transitions. Word has length 131 [2025-03-16 20:01:29,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 20:01:29,266 INFO L471 AbstractCegarLoop]: Abstraction has 58911 states and 112708 transitions. [2025-03-16 20:01:29,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 58911 states and 112708 transitions. [2025-03-16 20:01:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 20:01:29,281 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 20:01:29,281 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 20:01:29,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 20:01:29,281 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 20:01:29,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 20:01:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash 939804563, now seen corresponding path program 1 times [2025-03-16 20:01:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 20:01:29,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101975187] [2025-03-16 20:01:29,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 20:01:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 20:01:29,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 20:01:29,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 20:01:29,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 20:01:29,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 20:01:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 20:01:29,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 20:01:29,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101975187] [2025-03-16 20:01:29,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101975187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 20:01:29,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 20:01:29,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 20:01:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536536529] [2025-03-16 20:01:29,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 20:01:29,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 20:01:29,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 20:01:29,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 20:01:29,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 20:01:29,354 INFO L87 Difference]: Start difference. First operand 58911 states and 112708 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-16 20:01:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 20:01:33,990 INFO L93 Difference]: Finished difference Result 189664 states and 389723 transitions. [2025-03-16 20:01:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 20:01:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2025-03-16 20:01:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 20:01:34,599 INFO L225 Difference]: With dead ends: 189664 [2025-03-16 20:01:34,599 INFO L226 Difference]: Without dead ends: 132889 [2025-03-16 20:01:34,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-16 20:01:34,791 INFO L435 NwaCegarLoop]: 4506 mSDtfsCounter, 4782 mSDsluCounter, 13547 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4798 SdHoareTripleChecker+Valid, 18053 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 20:01:34,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4798 Valid, 18053 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 20:01:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132889 states.