./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.10.cil-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 9102a3dc168a1a089cfcbe45042daf88c4c5eebedf113fc0c98e676c1fbaab5b --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 04:17:06,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 04:17:06,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 04:17:06,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 04:17:06,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 04:17:06,815 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 04:17:06,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 04:17:06,817 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 04:17:06,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 04:17:06,817 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 04:17:06,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 04:17:06,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 04:17:06,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 04:17:06,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 04:17:06,820 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 04:17:06,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 04:17:06,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 04:17:06,820 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 04:17:06,821 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 04:17:06,822 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 04:17:06,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:17:06,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:17:06,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:17:06,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:17:06,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:17:06,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 04:17:06,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 04:17:06,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 04:17:06,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 04:17:06,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 04:17:06,824 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 04:17:06,824 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-jdk21/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 -> 9102a3dc168a1a089cfcbe45042daf88c4c5eebedf113fc0c98e676c1fbaab5b [2025-01-09 04:17:07,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 04:17:07,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 04:17:07,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 04:17:07,072 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 04:17:07,073 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 04:17:07,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2025-01-09 04:17:08,296 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4fa9128a4/49240e87e3924bb4b647a7819b648c2e/FLAG5e8360cb0 [2025-01-09 04:17:08,546 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 04:17:08,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2025-01-09 04:17:08,557 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4fa9128a4/49240e87e3924bb4b647a7819b648c2e/FLAG5e8360cb0 [2025-01-09 04:17:08,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4fa9128a4/49240e87e3924bb4b647a7819b648c2e [2025-01-09 04:17:08,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 04:17:08,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 04:17:08,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 04:17:08,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 04:17:08,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 04:17:08,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef428a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08, skipping insertion in model container [2025-01-09 04:17:08,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,608 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 04:17:08,703 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c[671,684] [2025-01-09 04:17:08,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:17:08,773 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 04:17:08,780 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c[671,684] [2025-01-09 04:17:08,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 04:17:08,833 INFO L204 MainTranslator]: Completed translation [2025-01-09 04:17:08,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08 WrapperNode [2025-01-09 04:17:08,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 04:17:08,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 04:17:08,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 04:17:08,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 04:17:08,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,876 INFO L138 Inliner]: procedures = 48, calls = 62, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 726 [2025-01-09 04:17:08,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 04:17:08,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 04:17:08,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 04:17:08,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 04:17:08,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,900 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]. [2025-01-09 04:17:08,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,915 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 04:17:08,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 04:17:08,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 04:17:08,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 04:17:08,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (1/1) ... [2025-01-09 04:17:08,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 04:17:08,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 04:17:08,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 04:17:08,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 04:17:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 04:17:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-01-09 04:17:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-01-09 04:17:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-01-09 04:17:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-01-09 04:17:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-01-09 04:17:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-01-09 04:17:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-01-09 04:17:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-01-09 04:17:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-01-09 04:17:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-01-09 04:17:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-01-09 04:17:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-01-09 04:17:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 04:17:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-01-09 04:17:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-01-09 04:17:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 04:17:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 04:17:09,047 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 04:17:09,049 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 04:17:09,705 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2025-01-09 04:17:09,705 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 04:17:09,728 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 04:17:09,731 INFO L312 CfgBuilder]: Removed 13 assume(true) statements. [2025-01-09 04:17:09,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:17:09 BoogieIcfgContainer [2025-01-09 04:17:09,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 04:17:09,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 04:17:09,735 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 04:17:09,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 04:17:09,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:17:08" (1/3) ... [2025-01-09 04:17:09,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f5f3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:17:09, skipping insertion in model container [2025-01-09 04:17:09,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:17:08" (2/3) ... [2025-01-09 04:17:09,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f5f3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:17:09, skipping insertion in model container [2025-01-09 04:17:09,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:17:09" (3/3) ... [2025-01-09 04:17:09,741 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.c [2025-01-09 04:17:09,757 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 04:17:09,759 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.10.cil-1.c that has 8 procedures, 338 locations, 1 initial locations, 13 loop locations, and 1 error locations. [2025-01-09 04:17:09,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 04:17:09,845 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;@11cc769e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 04:17:09,846 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 04:17:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 338 states, 304 states have (on average 1.618421052631579) internal successors, (492), 307 states have internal predecessors, (492), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-01-09 04:17:09,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:09,867 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:09,868 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:09,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:09,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1670142796, now seen corresponding path program 1 times [2025-01-09 04:17:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:09,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231926554] [2025-01-09 04:17:09,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:09,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:10,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:10,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:10,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:10,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:10,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:10,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231926554] [2025-01-09 04:17:10,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231926554] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:10,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:10,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 04:17:10,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018592463] [2025-01-09 04:17:10,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:10,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 04:17:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:10,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 04:17:10,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 04:17:10,276 INFO L87 Difference]: Start difference. First operand has 338 states, 304 states have (on average 1.618421052631579) internal successors, (492), 307 states have internal predecessors, (492), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:10,359 INFO L93 Difference]: Finished difference Result 668 states and 1079 transitions. [2025-01-09 04:17:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 04:17:10,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:10,374 INFO L225 Difference]: With dead ends: 668 [2025-01-09 04:17:10,374 INFO L226 Difference]: Without dead ends: 332 [2025-01-09 04:17:10,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 04:17:10,385 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 521 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:10,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 525 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:17:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-01-09 04:17:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2025-01-09 04:17:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 299 states have (on average 1.5785953177257526) internal successors, (472), 301 states have internal predecessors, (472), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 04:17:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 522 transitions. [2025-01-09 04:17:10,438 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 522 transitions. Word has length 154 [2025-01-09 04:17:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:10,439 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 522 transitions. [2025-01-09 04:17:10,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 522 transitions. [2025-01-09 04:17:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:10,443 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:10,443 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:10,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 04:17:10,444 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:10,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:10,444 INFO L85 PathProgramCache]: Analyzing trace with hash -260982838, now seen corresponding path program 1 times [2025-01-09 04:17:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:10,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056002746] [2025-01-09 04:17:10,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:10,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:10,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:10,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:10,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:10,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:10,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056002746] [2025-01-09 04:17:10,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056002746] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:10,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:10,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 04:17:10,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549819100] [2025-01-09 04:17:10,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:10,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 04:17:10,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:10,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 04:17:10,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 04:17:10,561 INFO L87 Difference]: Start difference. First operand 332 states and 522 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:10,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:10,586 INFO L93 Difference]: Finished difference Result 650 states and 1021 transitions. [2025-01-09 04:17:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 04:17:10,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:10,591 INFO L225 Difference]: With dead ends: 650 [2025-01-09 04:17:10,593 INFO L226 Difference]: Without dead ends: 332 [2025-01-09 04:17:10,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 04:17:10,595 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 508 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:10,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 520 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 04:17:10,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-01-09 04:17:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2025-01-09 04:17:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 299 states have (on average 1.5752508361204014) internal successors, (471), 301 states have internal predecessors, (471), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 04:17:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 521 transitions. [2025-01-09 04:17:10,613 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 521 transitions. Word has length 154 [2025-01-09 04:17:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:10,614 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 521 transitions. [2025-01-09 04:17:10,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 521 transitions. [2025-01-09 04:17:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:10,615 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:10,615 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:10,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 04:17:10,616 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:10,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:10,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1526886984, now seen corresponding path program 1 times [2025-01-09 04:17:10,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:10,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051756910] [2025-01-09 04:17:10,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:10,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:10,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:10,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:10,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:10,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:10,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:10,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051756910] [2025-01-09 04:17:10,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051756910] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:10,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:10,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 04:17:10,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433708192] [2025-01-09 04:17:10,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:10,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 04:17:10,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:10,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 04:17:10,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 04:17:10,897 INFO L87 Difference]: Start difference. First operand 332 states and 521 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:11,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:11,449 INFO L93 Difference]: Finished difference Result 1000 states and 1587 transitions. [2025-01-09 04:17:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 04:17:11,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:11,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:11,454 INFO L225 Difference]: With dead ends: 1000 [2025-01-09 04:17:11,454 INFO L226 Difference]: Without dead ends: 686 [2025-01-09 04:17:11,456 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 [2025-01-09 04:17:11,456 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 992 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:11,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1436 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:17:11,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2025-01-09 04:17:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 659. [2025-01-09 04:17:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 600 states have (on average 1.5883333333333334) internal successors, (953), 603 states have internal predecessors, (953), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2025-01-09 04:17:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1042 transitions. [2025-01-09 04:17:11,490 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1042 transitions. Word has length 154 [2025-01-09 04:17:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:11,490 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1042 transitions. [2025-01-09 04:17:11,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1042 transitions. [2025-01-09 04:17:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:11,492 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:11,492 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:11,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 04:17:11,492 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:11,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1462360764, now seen corresponding path program 1 times [2025-01-09 04:17:11,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:11,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666675382] [2025-01-09 04:17:11,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:11,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:11,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:11,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:11,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:11,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:11,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:11,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:11,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666675382] [2025-01-09 04:17:11,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666675382] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:11,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:11,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 04:17:11,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274983538] [2025-01-09 04:17:11,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:11,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 04:17:11,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:11,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 04:17:11,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:17:11,661 INFO L87 Difference]: Start difference. First operand 659 states and 1042 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:12,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:12,332 INFO L93 Difference]: Finished difference Result 1719 states and 2750 transitions. [2025-01-09 04:17:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:17:12,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:12,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:12,337 INFO L225 Difference]: With dead ends: 1719 [2025-01-09 04:17:12,337 INFO L226 Difference]: Without dead ends: 1078 [2025-01-09 04:17:12,339 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 [2025-01-09 04:17:12,339 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 997 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:12,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 2775 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 04:17:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2025-01-09 04:17:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 963. [2025-01-09 04:17:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 878 states have (on average 1.582004555808656) internal successors, (1389), 882 states have internal predecessors, (1389), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (66), 63 states have call predecessors, (66), 62 states have call successors, (66) [2025-01-09 04:17:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1519 transitions. [2025-01-09 04:17:12,376 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1519 transitions. Word has length 154 [2025-01-09 04:17:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:12,376 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1519 transitions. [2025-01-09 04:17:12,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1519 transitions. [2025-01-09 04:17:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:12,378 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:12,378 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:12,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 04:17:12,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:12,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1098894266, now seen corresponding path program 1 times [2025-01-09 04:17:12,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:12,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174145326] [2025-01-09 04:17:12,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:12,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:12,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:12,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:12,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:12,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:12,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:12,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:12,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174145326] [2025-01-09 04:17:12,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174145326] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:12,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:12,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 04:17:12,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543382121] [2025-01-09 04:17:12,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:12,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 04:17:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:12,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 04:17:12,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:17:12,539 INFO L87 Difference]: Start difference. First operand 963 states and 1519 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:13,165 INFO L93 Difference]: Finished difference Result 2689 states and 4296 transitions. [2025-01-09 04:17:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:17:13,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:13,176 INFO L225 Difference]: With dead ends: 2689 [2025-01-09 04:17:13,177 INFO L226 Difference]: Without dead ends: 1744 [2025-01-09 04:17:13,180 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 [2025-01-09 04:17:13,180 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 1021 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:13,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1942 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:17:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2025-01-09 04:17:13,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1612. [2025-01-09 04:17:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1473 states have (on average 1.5858791581805838) internal successors, (2336), 1481 states have internal predecessors, (2336), 102 states have call successors, (102), 31 states have call predecessors, (102), 36 states have return successors, (116), 103 states have call predecessors, (116), 100 states have call successors, (116) [2025-01-09 04:17:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2554 transitions. [2025-01-09 04:17:13,268 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2554 transitions. Word has length 154 [2025-01-09 04:17:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:13,268 INFO L471 AbstractCegarLoop]: Abstraction has 1612 states and 2554 transitions. [2025-01-09 04:17:13,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2554 transitions. [2025-01-09 04:17:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:13,270 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:13,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:13,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 04:17:13,273 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:13,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash -810074876, now seen corresponding path program 1 times [2025-01-09 04:17:13,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:13,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325930565] [2025-01-09 04:17:13,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:13,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:13,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:13,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:13,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:13,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325930565] [2025-01-09 04:17:13,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325930565] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:13,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:13,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 04:17:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986263390] [2025-01-09 04:17:13,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:13,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 04:17:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:13,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 04:17:13,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:17:13,407 INFO L87 Difference]: Start difference. First operand 1612 states and 2554 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:14,051 INFO L93 Difference]: Finished difference Result 4772 states and 7677 transitions. [2025-01-09 04:17:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:17:14,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:14,064 INFO L225 Difference]: With dead ends: 4772 [2025-01-09 04:17:14,064 INFO L226 Difference]: Without dead ends: 3178 [2025-01-09 04:17:14,068 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 [2025-01-09 04:17:14,068 INFO L435 NwaCegarLoop]: 674 mSDtfsCounter, 984 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:14,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 2733 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:17:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2025-01-09 04:17:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 3018. [2025-01-09 04:17:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 2765 states have (on average 1.6007233273056058) internal successors, (4426), 2787 states have internal predecessors, (4426), 178 states have call successors, (178), 55 states have call predecessors, (178), 74 states have return successors, (240), 183 states have call predecessors, (240), 176 states have call successors, (240) [2025-01-09 04:17:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 4844 transitions. [2025-01-09 04:17:14,226 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 4844 transitions. Word has length 154 [2025-01-09 04:17:14,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:14,226 INFO L471 AbstractCegarLoop]: Abstraction has 3018 states and 4844 transitions. [2025-01-09 04:17:14,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 4844 transitions. [2025-01-09 04:17:14,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:14,229 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:14,229 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:14,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 04:17:14,229 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:14,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:14,229 INFO L85 PathProgramCache]: Analyzing trace with hash -134914750, now seen corresponding path program 1 times [2025-01-09 04:17:14,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:14,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837977832] [2025-01-09 04:17:14,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:14,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:14,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:14,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:14,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:14,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:14,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:14,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837977832] [2025-01-09 04:17:14,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837977832] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:14,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:14,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 04:17:14,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258910885] [2025-01-09 04:17:14,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:14,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 04:17:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:14,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 04:17:14,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:17:14,338 INFO L87 Difference]: Start difference. First operand 3018 states and 4844 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:15,049 INFO L93 Difference]: Finished difference Result 9370 states and 15345 transitions. [2025-01-09 04:17:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:17:15,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:15,078 INFO L225 Difference]: With dead ends: 9370 [2025-01-09 04:17:15,078 INFO L226 Difference]: Without dead ends: 6370 [2025-01-09 04:17:15,089 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 [2025-01-09 04:17:15,090 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 979 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:15,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 2721 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:17:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2025-01-09 04:17:15,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 6145. [2025-01-09 04:17:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 5646 states have (on average 1.6255756287637266) internal successors, (9178), 5714 states have internal predecessors, (9178), 330 states have call successors, (330), 103 states have call predecessors, (330), 168 states have return successors, (584), 343 states have call predecessors, (584), 328 states have call successors, (584) [2025-01-09 04:17:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 10092 transitions. [2025-01-09 04:17:15,364 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 10092 transitions. Word has length 154 [2025-01-09 04:17:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:15,364 INFO L471 AbstractCegarLoop]: Abstraction has 6145 states and 10092 transitions. [2025-01-09 04:17:15,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:15,364 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 10092 transitions. [2025-01-09 04:17:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:15,368 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:15,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:15,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 04:17:15,369 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:15,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:15,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1082966716, now seen corresponding path program 1 times [2025-01-09 04:17:15,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:15,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222173001] [2025-01-09 04:17:15,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:15,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:15,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:15,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:15,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:15,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:15,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:15,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222173001] [2025-01-09 04:17:15,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222173001] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:15,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:15,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 04:17:15,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231356412] [2025-01-09 04:17:15,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:15,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 04:17:15,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:15,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 04:17:15,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:17:15,519 INFO L87 Difference]: Start difference. First operand 6145 states and 10092 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:16,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:16,340 INFO L93 Difference]: Finished difference Result 19767 states and 33335 transitions. [2025-01-09 04:17:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:17:16,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:16,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:16,409 INFO L225 Difference]: With dead ends: 19767 [2025-01-09 04:17:16,409 INFO L226 Difference]: Without dead ends: 13640 [2025-01-09 04:17:16,431 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 [2025-01-09 04:17:16,432 INFO L435 NwaCegarLoop]: 668 mSDtfsCounter, 974 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:16,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 2709 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 04:17:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13640 states. [2025-01-09 04:17:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13640 to 13290. [2025-01-09 04:17:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13290 states, 12245 states have (on average 1.6573295222539812) internal successors, (20294), 12459 states have internal predecessors, (20294), 634 states have call successors, (634), 199 states have call predecessors, (634), 410 states have return successors, (1656), 663 states have call predecessors, (1656), 632 states have call successors, (1656) [2025-01-09 04:17:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13290 states to 13290 states and 22584 transitions. [2025-01-09 04:17:17,025 INFO L78 Accepts]: Start accepts. Automaton has 13290 states and 22584 transitions. Word has length 154 [2025-01-09 04:17:17,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:17,026 INFO L471 AbstractCegarLoop]: Abstraction has 13290 states and 22584 transitions. [2025-01-09 04:17:17,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 13290 states and 22584 transitions. [2025-01-09 04:17:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:17,034 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:17,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:17,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 04:17:17,034 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:17,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1667738366, now seen corresponding path program 1 times [2025-01-09 04:17:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735219037] [2025-01-09 04:17:17,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:17,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:17,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:17,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:17,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:17,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:17,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735219037] [2025-01-09 04:17:17,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735219037] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:17,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:17,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 04:17:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179619367] [2025-01-09 04:17:17,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:17,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 04:17:17,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:17,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 04:17:17,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:17:17,174 INFO L87 Difference]: Start difference. First operand 13290 states and 22584 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:18,383 INFO L93 Difference]: Finished difference Result 43950 states and 77341 transitions. [2025-01-09 04:17:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:17:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:18,508 INFO L225 Difference]: With dead ends: 43950 [2025-01-09 04:17:18,508 INFO L226 Difference]: Without dead ends: 30678 [2025-01-09 04:17:18,552 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 [2025-01-09 04:17:18,555 INFO L435 NwaCegarLoop]: 665 mSDtfsCounter, 969 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:18,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 2697 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 04:17:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30678 states. [2025-01-09 04:17:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30678 to 30091. [2025-01-09 04:17:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30091 states, 27792 states have (on average 1.6927892918825562) internal successors, (47046), 28460 states have internal predecessors, (47046), 1242 states have call successors, (1242), 391 states have call predecessors, (1242), 1056 states have return successors, (5336), 1303 states have call predecessors, (5336), 1240 states have call successors, (5336) [2025-01-09 04:17:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30091 states to 30091 states and 53624 transitions. [2025-01-09 04:17:19,917 INFO L78 Accepts]: Start accepts. Automaton has 30091 states and 53624 transitions. Word has length 154 [2025-01-09 04:17:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:19,917 INFO L471 AbstractCegarLoop]: Abstraction has 30091 states and 53624 transitions. [2025-01-09 04:17:19,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 30091 states and 53624 transitions. [2025-01-09 04:17:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:19,932 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:19,933 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:19,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 04:17:19,933 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:19,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:19,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2102243964, now seen corresponding path program 1 times [2025-01-09 04:17:19,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:19,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835866837] [2025-01-09 04:17:19,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:19,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:19,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:19,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:19,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:19,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:20,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:20,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835866837] [2025-01-09 04:17:20,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835866837] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:20,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:20,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 04:17:20,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039708898] [2025-01-09 04:17:20,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:20,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 04:17:20,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:20,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 04:17:20,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:17:20,088 INFO L87 Difference]: Start difference. First operand 30091 states and 53624 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:22,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:22,461 INFO L93 Difference]: Finished difference Result 101845 states and 190099 transitions. [2025-01-09 04:17:22,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:17:22,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:22,798 INFO L225 Difference]: With dead ends: 101845 [2025-01-09 04:17:22,798 INFO L226 Difference]: Without dead ends: 71772 [2025-01-09 04:17:22,880 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 [2025-01-09 04:17:22,881 INFO L435 NwaCegarLoop]: 662 mSDtfsCounter, 964 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:22,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 2685 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 04:17:22,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71772 states. [2025-01-09 04:17:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71772 to 70740. [2025-01-09 04:17:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70740 states, 65447 states have (on average 1.7289409751401899) internal successors, (113154), 67509 states have internal predecessors, (113154), 2458 states have call successors, (2458), 775 states have call predecessors, (2458), 2834 states have return successors, (18840), 2583 states have call predecessors, (18840), 2456 states have call successors, (18840) [2025-01-09 04:17:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70740 states to 70740 states and 134452 transitions. [2025-01-09 04:17:26,451 INFO L78 Accepts]: Start accepts. Automaton has 70740 states and 134452 transitions. Word has length 154 [2025-01-09 04:17:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 04:17:26,452 INFO L471 AbstractCegarLoop]: Abstraction has 70740 states and 134452 transitions. [2025-01-09 04:17:26,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:26,452 INFO L276 IsEmpty]: Start isEmpty. Operand 70740 states and 134452 transitions. [2025-01-09 04:17:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-01-09 04:17:26,488 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 04:17:26,488 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 04:17:26,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 04:17:26,489 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 04:17:26,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 04:17:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1763065026, now seen corresponding path program 1 times [2025-01-09 04:17:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 04:17:26,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632390082] [2025-01-09 04:17:26,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 04:17:26,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 04:17:26,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-01-09 04:17:26,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-01-09 04:17:26,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 04:17:26,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 04:17:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 04:17:26,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 04:17:26,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632390082] [2025-01-09 04:17:26,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632390082] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 04:17:26,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 04:17:26,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 04:17:26,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069183646] [2025-01-09 04:17:26,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 04:17:26,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 04:17:26,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 04:17:26,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 04:17:26,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 04:17:26,598 INFO L87 Difference]: Start difference. First operand 70740 states and 134452 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-09 04:17:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 04:17:31,538 INFO L93 Difference]: Finished difference Result 244304 states and 493745 transitions. [2025-01-09 04:17:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 04:17:31,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 5 states have internal predecessors, (143), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 154 [2025-01-09 04:17:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 04:17:32,540 INFO L225 Difference]: With dead ends: 244304 [2025-01-09 04:17:32,541 INFO L226 Difference]: Without dead ends: 173582 [2025-01-09 04:17:32,707 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 [2025-01-09 04:17:32,708 INFO L435 NwaCegarLoop]: 659 mSDtfsCounter, 959 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 04:17:32,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 2673 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 04:17:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173582 states. [2025-01-09 04:17:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173582 to 171721. [2025-01-09 04:17:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171721 states, 158982 states have (on average 1.7630800971179128) internal successors, (280298), 165290 states have internal predecessors, (280298), 4890 states have call successors, (4890), 1543 states have call predecessors, (4890), 7848 states have return successors, (70424), 5143 states have call predecessors, (70424), 4888 states have call successors, (70424)