./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 00:06:02,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 00:06:02,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 00:06:02,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 00:06:02,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 00:06:03,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 00:06:03,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 00:06:03,005 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 00:06:03,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 00:06:03,006 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 00:06:03,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 00:06:03,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 00:06:03,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 00:06:03,008 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 00:06:03,008 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 00:06:03,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 00:06:03,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 00:06:03,009 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 00:06:03,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 00:06:03,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 00:06:03,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 00:06:03,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 00:06:03,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 00:06:03,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 00:06:03,012 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 00:06:03,012 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 00:06:03,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 00:06:03,013 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 00:06:03,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 00:06:03,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 00:06:03,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 00:06:03,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 00:06:03,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:06:03,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 00:06:03,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 00:06:03,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 00:06:03,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 00:06:03,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 00:06:03,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 00:06:03,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 00:06:03,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 00:06:03,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 00:06:03,018 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574 [2024-11-20 00:06:03,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 00:06:03,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 00:06:03,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 00:06:03,304 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 00:06:03,304 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 00:06:03,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-20 00:06:04,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 00:06:04,943 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 00:06:04,944 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-20 00:06:04,956 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007879334/4ca632b35f434d518ac635e922b51396/FLAGb4ea2f5c7 [2024-11-20 00:06:04,969 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/007879334/4ca632b35f434d518ac635e922b51396 [2024-11-20 00:06:04,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 00:06:04,973 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 00:06:04,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 00:06:04,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 00:06:04,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 00:06:04,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:06:04" (1/1) ... [2024-11-20 00:06:04,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d55b6aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:04, skipping insertion in model container [2024-11-20 00:06:04,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:06:04" (1/1) ... [2024-11-20 00:06:05,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 00:06:05,162 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c[913,926] [2024-11-20 00:06:05,199 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c[5977,5990] [2024-11-20 00:06:05,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:06:05,350 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 00:06:05,363 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c[913,926] [2024-11-20 00:06:05,375 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c[5977,5990] [2024-11-20 00:06:05,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:06:05,455 INFO L204 MainTranslator]: Completed translation [2024-11-20 00:06:05,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05 WrapperNode [2024-11-20 00:06:05,456 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 00:06:05,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 00:06:05,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 00:06:05,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 00:06:05,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,512 INFO L138 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 789 [2024-11-20 00:06:05,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 00:06:05,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 00:06:05,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 00:06:05,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 00:06:05,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,532 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,553 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]. [2024-11-20 00:06:05,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 00:06:05,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 00:06:05,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 00:06:05,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 00:06:05,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (1/1) ... [2024-11-20 00:06:05,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:06:05,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:05,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 00:06:05,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 00:06:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 00:06:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-20 00:06:05,682 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-20 00:06:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-20 00:06:05,684 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-20 00:06:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-20 00:06:05,684 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-20 00:06:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-20 00:06:05,684 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-20 00:06:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-20 00:06:05,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-20 00:06:05,684 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-20 00:06:05,684 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-20 00:06:05,685 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-20 00:06:05,685 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-20 00:06:05,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 00:06:05,685 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-20 00:06:05,685 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-20 00:06:05,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 00:06:05,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 00:06:05,685 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-20 00:06:05,685 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-20 00:06:05,686 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-20 00:06:05,686 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-20 00:06:05,795 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 00:06:05,797 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 00:06:06,396 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-11-20 00:06:06,396 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 00:06:06,424 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 00:06:06,424 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-20 00:06:06,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:06 BoogieIcfgContainer [2024-11-20 00:06:06,426 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 00:06:06,427 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 00:06:06,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 00:06:06,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 00:06:06,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:06:04" (1/3) ... [2024-11-20 00:06:06,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519e61e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:06, skipping insertion in model container [2024-11-20 00:06:06,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:05" (2/3) ... [2024-11-20 00:06:06,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519e61e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:06, skipping insertion in model container [2024-11-20 00:06:06,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:06" (3/3) ... [2024-11-20 00:06:06,440 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-20 00:06:06,454 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 00:06:06,454 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 00:06:06,583 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 00:06:06,589 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;@1ba5815b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 00:06:06,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 00:06:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 345 states, 303 states have (on average 1.613861386138614) internal successors, (489), 310 states have internal predecessors, (489), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-20 00:06:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 00:06:06,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:06,605 INFO L215 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] [2024-11-20 00:06:06,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:06,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash 269349357, now seen corresponding path program 1 times [2024-11-20 00:06:06,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:06,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682977544] [2024-11-20 00:06:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:06,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:06,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:06,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-20 00:06:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:06,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:06,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682977544] [2024-11-20 00:06:06,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682977544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:06,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:06,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:06,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109410705] [2024-11-20 00:06:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:06,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:06,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:06,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:07,003 INFO L87 Difference]: Start difference. First operand has 345 states, 303 states have (on average 1.613861386138614) internal successors, (489), 310 states have internal predecessors, (489), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:07,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:07,472 INFO L93 Difference]: Finished difference Result 739 states and 1172 transitions. [2024-11-20 00:06:07,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-20 00:06:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:07,485 INFO L225 Difference]: With dead ends: 739 [2024-11-20 00:06:07,485 INFO L226 Difference]: Without dead ends: 404 [2024-11-20 00:06:07,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:07,492 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 664 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:07,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 690 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 00:06:07,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-20 00:06:07,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 398. [2024-11-20 00:06:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 352 states have (on average 1.4943181818181819) internal successors, (526), 357 states have internal predecessors, (526), 33 states have call successors, (33), 12 states have call predecessors, (33), 11 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2024-11-20 00:06:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 594 transitions. [2024-11-20 00:06:07,570 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 594 transitions. Word has length 44 [2024-11-20 00:06:07,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:07,570 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 594 transitions. [2024-11-20 00:06:07,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:07,570 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 594 transitions. [2024-11-20 00:06:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 00:06:07,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:07,573 INFO L215 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] [2024-11-20 00:06:07,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 00:06:07,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:07,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash -461325641, now seen corresponding path program 1 times [2024-11-20 00:06:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:07,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011588453] [2024-11-20 00:06:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:07,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:07,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 00:06:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:07,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:07,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011588453] [2024-11-20 00:06:07,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011588453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:07,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:07,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:07,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800290851] [2024-11-20 00:06:07,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:07,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:07,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:07,650 INFO L87 Difference]: Start difference. First operand 398 states and 594 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:08,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:08,170 INFO L93 Difference]: Finished difference Result 646 states and 934 transitions. [2024-11-20 00:06:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:08,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-20 00:06:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:08,175 INFO L225 Difference]: With dead ends: 646 [2024-11-20 00:06:08,175 INFO L226 Difference]: Without dead ends: 522 [2024-11-20 00:06:08,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:08,181 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 280 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:08,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 899 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 00:06:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-20 00:06:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 465. [2024-11-20 00:06:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 413 states have (on average 1.476997578692494) internal successors, (610), 418 states have internal predecessors, (610), 36 states have call successors, (36), 15 states have call predecessors, (36), 14 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-20 00:06:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 684 transitions. [2024-11-20 00:06:08,232 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 684 transitions. Word has length 45 [2024-11-20 00:06:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:08,232 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 684 transitions. [2024-11-20 00:06:08,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 684 transitions. [2024-11-20 00:06:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 00:06:08,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:08,237 INFO L215 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] [2024-11-20 00:06:08,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 00:06:08,238 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:08,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:08,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1745683102, now seen corresponding path program 1 times [2024-11-20 00:06:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149940550] [2024-11-20 00:06:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:08,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:08,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 00:06:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149940550] [2024-11-20 00:06:08,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149940550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:08,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:08,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:08,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861810923] [2024-11-20 00:06:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:08,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:08,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:08,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:08,356 INFO L87 Difference]: Start difference. First operand 465 states and 684 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:08,638 INFO L93 Difference]: Finished difference Result 873 states and 1243 transitions. [2024-11-20 00:06:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:08,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-20 00:06:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:08,642 INFO L225 Difference]: With dead ends: 873 [2024-11-20 00:06:08,642 INFO L226 Difference]: Without dead ends: 682 [2024-11-20 00:06:08,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:08,644 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 681 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:08,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 662 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 00:06:08,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-20 00:06:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 630. [2024-11-20 00:06:08,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 559 states have (on average 1.4311270125223614) internal successors, (800), 567 states have internal predecessors, (800), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (55), 41 states have call predecessors, (55), 43 states have call successors, (55) [2024-11-20 00:06:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 902 transitions. [2024-11-20 00:06:08,672 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 902 transitions. Word has length 45 [2024-11-20 00:06:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:08,673 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 902 transitions. [2024-11-20 00:06:08,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 00:06:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 902 transitions. [2024-11-20 00:06:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 00:06:08,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:08,674 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:08,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 00:06:08,675 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:08,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:08,675 INFO L85 PathProgramCache]: Analyzing trace with hash 201479069, now seen corresponding path program 1 times [2024-11-20 00:06:08,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:08,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061659536] [2024-11-20 00:06:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:08,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:08,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:08,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:06:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:08,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 00:06:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 00:06:08,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:08,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061659536] [2024-11-20 00:06:08,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061659536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:08,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:08,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:08,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861870959] [2024-11-20 00:06:08,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:08,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:08,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:08,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:08,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:08,796 INFO L87 Difference]: Start difference. First operand 630 states and 902 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 00:06:09,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:09,130 INFO L93 Difference]: Finished difference Result 1214 states and 1687 transitions. [2024-11-20 00:06:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:09,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-11-20 00:06:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:09,134 INFO L225 Difference]: With dead ends: 1214 [2024-11-20 00:06:09,134 INFO L226 Difference]: Without dead ends: 858 [2024-11-20 00:06:09,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:09,136 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 264 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:09,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 951 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 00:06:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-11-20 00:06:09,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 820. [2024-11-20 00:06:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 725 states have (on average 1.3793103448275863) internal successors, (1000), 735 states have internal predecessors, (1000), 61 states have call successors, (61), 30 states have call predecessors, (61), 32 states have return successors, (79), 55 states have call predecessors, (79), 57 states have call successors, (79) [2024-11-20 00:06:09,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1140 transitions. [2024-11-20 00:06:09,198 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1140 transitions. Word has length 62 [2024-11-20 00:06:09,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:09,198 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1140 transitions. [2024-11-20 00:06:09,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 00:06:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1140 transitions. [2024-11-20 00:06:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-20 00:06:09,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:09,200 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:09,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 00:06:09,201 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:09,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1220888774, now seen corresponding path program 1 times [2024-11-20 00:06:09,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:09,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466598068] [2024-11-20 00:06:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:09,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-20 00:06:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-20 00:06:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-20 00:06:09,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466598068] [2024-11-20 00:06:09,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466598068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:09,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:09,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:09,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164901269] [2024-11-20 00:06:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:09,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:09,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:09,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:09,269 INFO L87 Difference]: Start difference. First operand 820 states and 1140 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 00:06:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:09,558 INFO L93 Difference]: Finished difference Result 1473 states and 1993 transitions. [2024-11-20 00:06:09,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:09,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-20 00:06:09,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:09,567 INFO L225 Difference]: With dead ends: 1473 [2024-11-20 00:06:09,567 INFO L226 Difference]: Without dead ends: 1019 [2024-11-20 00:06:09,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:09,571 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 671 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:09,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 658 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 00:06:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2024-11-20 00:06:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 964. [2024-11-20 00:06:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 853 states have (on average 1.3493552168815943) internal successors, (1151), 865 states have internal predecessors, (1151), 69 states have call successors, (69), 36 states have call predecessors, (69), 40 states have return successors, (93), 63 states have call predecessors, (93), 65 states have call successors, (93) [2024-11-20 00:06:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1313 transitions. [2024-11-20 00:06:09,634 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1313 transitions. Word has length 67 [2024-11-20 00:06:09,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:09,635 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1313 transitions. [2024-11-20 00:06:09,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 00:06:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1313 transitions. [2024-11-20 00:06:09,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 00:06:09,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:09,637 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:09,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 00:06:09,637 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:09,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash 890321295, now seen corresponding path program 1 times [2024-11-20 00:06:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:09,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641972102] [2024-11-20 00:06:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:09,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:06:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 00:06:09,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:09,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641972102] [2024-11-20 00:06:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641972102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131710284] [2024-11-20 00:06:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:09,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:09,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:09,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:09,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 00:06:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:09,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 00:06:09,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 00:06:09,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:06:09,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131710284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:09,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:06:09,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-20 00:06:09,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620081229] [2024-11-20 00:06:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:09,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:06:09,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:09,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:06:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:09,888 INFO L87 Difference]: Start difference. First operand 964 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 00:06:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:09,933 INFO L93 Difference]: Finished difference Result 1507 states and 2036 transitions. [2024-11-20 00:06:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:06:09,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-11-20 00:06:09,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:09,937 INFO L225 Difference]: With dead ends: 1507 [2024-11-20 00:06:09,937 INFO L226 Difference]: Without dead ends: 962 [2024-11-20 00:06:09,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:09,939 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 72 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:09,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1027 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:06:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-20 00:06:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 918. [2024-11-20 00:06:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 813 states have (on average 1.3357933579335792) internal successors, (1086), 825 states have internal predecessors, (1086), 65 states have call successors, (65), 34 states have call predecessors, (65), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2024-11-20 00:06:09,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1238 transitions. [2024-11-20 00:06:09,970 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1238 transitions. Word has length 68 [2024-11-20 00:06:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:09,971 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1238 transitions. [2024-11-20 00:06:09,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 00:06:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1238 transitions. [2024-11-20 00:06:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 00:06:09,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:09,972 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:09,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 00:06:10,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-20 00:06:10,174 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:10,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1224674226, now seen corresponding path program 1 times [2024-11-20 00:06:10,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:10,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742011790] [2024-11-20 00:06:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:06:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 00:06:10,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:10,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742011790] [2024-11-20 00:06:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742011790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:10,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513793555] [2024-11-20 00:06:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:10,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:10,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:10,253 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:10,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 00:06:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 00:06:10,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 00:06:10,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:06:10,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513793555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:10,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:06:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-20 00:06:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953712940] [2024-11-20 00:06:10,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:10,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 00:06:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 00:06:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:06:10,414 INFO L87 Difference]: Start difference. First operand 918 states and 1238 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-20 00:06:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:10,465 INFO L93 Difference]: Finished difference Result 1344 states and 1799 transitions. [2024-11-20 00:06:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:10,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2024-11-20 00:06:10,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:10,469 INFO L225 Difference]: With dead ends: 1344 [2024-11-20 00:06:10,470 INFO L226 Difference]: Without dead ends: 942 [2024-11-20 00:06:10,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:06:10,472 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 0 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:10,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1996 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:06:10,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-20 00:06:10,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2024-11-20 00:06:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 837 states have (on average 1.3261648745519714) internal successors, (1110), 849 states have internal predecessors, (1110), 65 states have call successors, (65), 34 states have call predecessors, (65), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2024-11-20 00:06:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1262 transitions. [2024-11-20 00:06:10,510 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1262 transitions. Word has length 68 [2024-11-20 00:06:10,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:10,515 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1262 transitions. [2024-11-20 00:06:10,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-20 00:06:10,516 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1262 transitions. [2024-11-20 00:06:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 00:06:10,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:10,518 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:10,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 00:06:10,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-20 00:06:10,725 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:10,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:10,726 INFO L85 PathProgramCache]: Analyzing trace with hash -637868212, now seen corresponding path program 1 times [2024-11-20 00:06:10,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:10,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535006490] [2024-11-20 00:06:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:10,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:06:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 00:06:10,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:10,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535006490] [2024-11-20 00:06:10,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535006490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:10,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783259283] [2024-11-20 00:06:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:10,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:10,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:10,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:10,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 00:06:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:10,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 00:06:10,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:11,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:06:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 00:06:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783259283] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:11,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:06:11,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-11-20 00:06:11,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232624096] [2024-11-20 00:06:11,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:11,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:11,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:06:11,080 INFO L87 Difference]: Start difference. First operand 942 states and 1262 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 00:06:11,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:11,198 INFO L93 Difference]: Finished difference Result 994 states and 1324 transitions. [2024-11-20 00:06:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 00:06:11,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-20 00:06:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:11,205 INFO L225 Difference]: With dead ends: 994 [2024-11-20 00:06:11,205 INFO L226 Difference]: Without dead ends: 991 [2024-11-20 00:06:11,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-20 00:06:11,207 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 901 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:11,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 589 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 00:06:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-20 00:06:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 941. [2024-11-20 00:06:11,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 837 states have (on average 1.3237753882915173) internal successors, (1108), 848 states have internal predecessors, (1108), 64 states have call successors, (64), 34 states have call predecessors, (64), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2024-11-20 00:06:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1259 transitions. [2024-11-20 00:06:11,267 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1259 transitions. Word has length 68 [2024-11-20 00:06:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:11,268 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1259 transitions. [2024-11-20 00:06:11,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 00:06:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1259 transitions. [2024-11-20 00:06:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-20 00:06:11,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:11,272 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:11,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 00:06:11,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:11,473 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:11,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1699860191, now seen corresponding path program 1 times [2024-11-20 00:06:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707713882] [2024-11-20 00:06:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:11,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:11,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:11,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:11,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:06:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-20 00:06:11,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:11,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707713882] [2024-11-20 00:06:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707713882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:11,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982383252] [2024-11-20 00:06:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:11,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:11,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:11,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:11,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 00:06:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:11,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 00:06:11,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:11,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:06:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 00:06:11,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982383252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 00:06:11,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 00:06:11,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-11-20 00:06:11,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879687166] [2024-11-20 00:06:11,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 00:06:11,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 00:06:11,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 00:06:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:06:11,930 INFO L87 Difference]: Start difference. First operand 941 states and 1259 transitions. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-20 00:06:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:13,077 INFO L93 Difference]: Finished difference Result 2270 states and 2958 transitions. [2024-11-20 00:06:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-20 00:06:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-11-20 00:06:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:13,084 INFO L225 Difference]: With dead ends: 2270 [2024-11-20 00:06:13,084 INFO L226 Difference]: Without dead ends: 1633 [2024-11-20 00:06:13,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=1566, Unknown=0, NotChecked=0, Total=1806 [2024-11-20 00:06:13,087 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 1307 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:13,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 2544 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 00:06:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2024-11-20 00:06:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1157. [2024-11-20 00:06:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1035 states have (on average 1.2995169082125604) internal successors, (1345), 1050 states have internal predecessors, (1345), 73 states have call successors, (73), 41 states have call predecessors, (73), 47 states have return successors, (98), 66 states have call predecessors, (98), 70 states have call successors, (98) [2024-11-20 00:06:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1516 transitions. [2024-11-20 00:06:13,138 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1516 transitions. Word has length 69 [2024-11-20 00:06:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:13,138 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1516 transitions. [2024-11-20 00:06:13,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-20 00:06:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1516 transitions. [2024-11-20 00:06:13,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-20 00:06:13,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:13,141 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:13,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 00:06:13,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:13,346 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:13,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:13,346 INFO L85 PathProgramCache]: Analyzing trace with hash -651103349, now seen corresponding path program 1 times [2024-11-20 00:06:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:13,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820385321] [2024-11-20 00:06:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:13,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 00:06:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 00:06:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-20 00:06:13,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:13,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820385321] [2024-11-20 00:06:13,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820385321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:13,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:13,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:06:13,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140184328] [2024-11-20 00:06:13,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:13,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:06:13,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:13,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:06:13,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:06:13,387 INFO L87 Difference]: Start difference. First operand 1157 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 00:06:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:13,703 INFO L93 Difference]: Finished difference Result 1869 states and 2392 transitions. [2024-11-20 00:06:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:06:13,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-20 00:06:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:13,708 INFO L225 Difference]: With dead ends: 1869 [2024-11-20 00:06:13,708 INFO L226 Difference]: Without dead ends: 1177 [2024-11-20 00:06:13,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:13,710 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 673 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:13,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 677 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 00:06:13,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-11-20 00:06:13,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1075. [2024-11-20 00:06:13,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 960 states have (on average 1.2927083333333333) internal successors, (1241), 975 states have internal predecessors, (1241), 70 states have call successors, (70), 38 states have call predecessors, (70), 43 states have return successors, (93), 62 states have call predecessors, (93), 67 states have call successors, (93) [2024-11-20 00:06:13,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1404 transitions. [2024-11-20 00:06:13,745 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1404 transitions. Word has length 88 [2024-11-20 00:06:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:13,745 INFO L471 AbstractCegarLoop]: Abstraction has 1075 states and 1404 transitions. [2024-11-20 00:06:13,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 00:06:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1404 transitions. [2024-11-20 00:06:13,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-20 00:06:13,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:13,747 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 00:06:13,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 00:06:13,747 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:13,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:13,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1364600849, now seen corresponding path program 1 times [2024-11-20 00:06:13,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:13,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099861291] [2024-11-20 00:06:13,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:13,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:06:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-20 00:06:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-20 00:06:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-20 00:06:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-20 00:06:13,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:13,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099861291] [2024-11-20 00:06:13,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099861291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:13,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972005536] [2024-11-20 00:06:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:13,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:13,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:13,810 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:13,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 00:06:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:13,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 00:06:13,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-20 00:06:13,906 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:06:13,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972005536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:13,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:06:13,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-20 00:06:13,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598203443] [2024-11-20 00:06:13,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:13,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:06:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:06:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:06:13,908 INFO L87 Difference]: Start difference. First operand 1075 states and 1404 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:06:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:13,941 INFO L93 Difference]: Finished difference Result 1397 states and 1796 transitions. [2024-11-20 00:06:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:06:13,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-11-20 00:06:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:13,944 INFO L225 Difference]: With dead ends: 1397 [2024-11-20 00:06:13,944 INFO L226 Difference]: Without dead ends: 268 [2024-11-20 00:06:13,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:06:13,946 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 60 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:13,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1021 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:06:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-20 00:06:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-20 00:06:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 238 states have (on average 1.5420168067226891) internal successors, (367), 240 states have internal predecessors, (367), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-20 00:06:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 411 transitions. [2024-11-20 00:06:13,955 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 411 transitions. Word has length 103 [2024-11-20 00:06:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:13,955 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 411 transitions. [2024-11-20 00:06:13,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 00:06:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 411 transitions. [2024-11-20 00:06:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:13,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:13,956 INFO L215 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] [2024-11-20 00:06:13,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 00:06:14,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-20 00:06:14,158 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:14,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:14,158 INFO L85 PathProgramCache]: Analyzing trace with hash 535279623, now seen corresponding path program 1 times [2024-11-20 00:06:14,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:14,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169251049] [2024-11-20 00:06:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:14,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:14,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:14,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:14,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:14,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:14,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169251049] [2024-11-20 00:06:14,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169251049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:14,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:14,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 00:06:14,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448936619] [2024-11-20 00:06:14,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:14,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 00:06:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:14,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 00:06:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 00:06:14,274 INFO L87 Difference]: Start difference. First operand 268 states and 411 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:15,128 INFO L93 Difference]: Finished difference Result 611 states and 953 transitions. [2024-11-20 00:06:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 00:06:15,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:15,130 INFO L225 Difference]: With dead ends: 611 [2024-11-20 00:06:15,131 INFO L226 Difference]: Without dead ends: 355 [2024-11-20 00:06:15,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:06:15,132 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 680 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:15,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 549 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 00:06:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-20 00:06:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 268. [2024-11-20 00:06:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 238 states have (on average 1.5378151260504203) internal successors, (366), 240 states have internal predecessors, (366), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-20 00:06:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 410 transitions. [2024-11-20 00:06:15,150 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 410 transitions. Word has length 124 [2024-11-20 00:06:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:15,150 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 410 transitions. [2024-11-20 00:06:15,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 410 transitions. [2024-11-20 00:06:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:15,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:15,151 INFO L215 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] [2024-11-20 00:06:15,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 00:06:15,151 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:15,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2112324731, now seen corresponding path program 1 times [2024-11-20 00:06:15,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:15,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593106358] [2024-11-20 00:06:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:15,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:15,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:15,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:15,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:15,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:15,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593106358] [2024-11-20 00:06:15,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593106358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:15,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:15,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:06:15,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445630092] [2024-11-20 00:06:15,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:15,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:06:15,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:06:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:06:15,331 INFO L87 Difference]: Start difference. First operand 268 states and 410 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:16,871 INFO L93 Difference]: Finished difference Result 954 states and 1497 transitions. [2024-11-20 00:06:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:06:16,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:16,875 INFO L225 Difference]: With dead ends: 954 [2024-11-20 00:06:16,875 INFO L226 Difference]: Without dead ends: 702 [2024-11-20 00:06:16,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:06:16,876 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 1010 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:16,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 935 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-20 00:06:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-20 00:06:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 527. [2024-11-20 00:06:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 474 states have (on average 1.5506329113924051) internal successors, (735), 477 states have internal predecessors, (735), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2024-11-20 00:06:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 814 transitions. [2024-11-20 00:06:16,903 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 814 transitions. Word has length 124 [2024-11-20 00:06:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:16,903 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 814 transitions. [2024-11-20 00:06:16,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 814 transitions. [2024-11-20 00:06:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:16,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:16,904 INFO L215 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] [2024-11-20 00:06:16,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 00:06:16,905 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:16,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:16,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1559360963, now seen corresponding path program 1 times [2024-11-20 00:06:16,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:16,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985662984] [2024-11-20 00:06:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:16,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:16,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:17,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:17,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:17,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:17,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:17,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:17,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985662984] [2024-11-20 00:06:17,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985662984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:17,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:17,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:17,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123063651] [2024-11-20 00:06:17,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:17,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:17,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:17,078 INFO L87 Difference]: Start difference. First operand 527 states and 814 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:18,979 INFO L93 Difference]: Finished difference Result 1568 states and 2462 transitions. [2024-11-20 00:06:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:18,984 INFO L225 Difference]: With dead ends: 1568 [2024-11-20 00:06:18,984 INFO L226 Difference]: Without dead ends: 1057 [2024-11-20 00:06:18,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:18,985 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 1021 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:18,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1801 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 00:06:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2024-11-20 00:06:19,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 769. [2024-11-20 00:06:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 693 states have (on average 1.544011544011544) internal successors, (1070), 697 states have internal predecessors, (1070), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-20 00:06:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1183 transitions. [2024-11-20 00:06:19,023 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1183 transitions. Word has length 124 [2024-11-20 00:06:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:19,023 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1183 transitions. [2024-11-20 00:06:19,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1183 transitions. [2024-11-20 00:06:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:19,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:19,024 INFO L215 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] [2024-11-20 00:06:19,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 00:06:19,024 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:19,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1677802437, now seen corresponding path program 1 times [2024-11-20 00:06:19,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:19,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150889816] [2024-11-20 00:06:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:19,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:19,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:19,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:19,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:19,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:19,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:19,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150889816] [2024-11-20 00:06:19,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150889816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:19,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:19,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157515594] [2024-11-20 00:06:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:19,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:19,190 INFO L87 Difference]: Start difference. First operand 769 states and 1183 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:21,017 INFO L93 Difference]: Finished difference Result 2473 states and 3875 transitions. [2024-11-20 00:06:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:21,024 INFO L225 Difference]: With dead ends: 2473 [2024-11-20 00:06:21,024 INFO L226 Difference]: Without dead ends: 1720 [2024-11-20 00:06:21,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:21,026 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 1025 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:21,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1799 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:06:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2024-11-20 00:06:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1254. [2024-11-20 00:06:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1132 states have (on average 1.5379858657243817) internal successors, (1741), 1138 states have internal predecessors, (1741), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2024-11-20 00:06:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1926 transitions. [2024-11-20 00:06:21,132 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1926 transitions. Word has length 124 [2024-11-20 00:06:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:21,132 INFO L471 AbstractCegarLoop]: Abstraction has 1254 states and 1926 transitions. [2024-11-20 00:06:21,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1926 transitions. [2024-11-20 00:06:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:21,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:21,134 INFO L215 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] [2024-11-20 00:06:21,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 00:06:21,134 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:21,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1227870845, now seen corresponding path program 1 times [2024-11-20 00:06:21,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:21,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842216884] [2024-11-20 00:06:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:21,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:21,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:21,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:21,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842216884] [2024-11-20 00:06:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842216884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:21,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:21,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815163875] [2024-11-20 00:06:21,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:21,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:21,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:21,337 INFO L87 Difference]: Start difference. First operand 1254 states and 1926 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:22,346 INFO L93 Difference]: Finished difference Result 2942 states and 4601 transitions. [2024-11-20 00:06:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:06:22,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:22,363 INFO L225 Difference]: With dead ends: 2942 [2024-11-20 00:06:22,363 INFO L226 Difference]: Without dead ends: 1704 [2024-11-20 00:06:22,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:06:22,371 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 858 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:22,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 754 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:06:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2024-11-20 00:06:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1254. [2024-11-20 00:06:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1132 states have (on average 1.5335689045936396) internal successors, (1736), 1138 states have internal predecessors, (1736), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2024-11-20 00:06:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1921 transitions. [2024-11-20 00:06:22,520 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1921 transitions. Word has length 124 [2024-11-20 00:06:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:22,521 INFO L471 AbstractCegarLoop]: Abstraction has 1254 states and 1921 transitions. [2024-11-20 00:06:22,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1921 transitions. [2024-11-20 00:06:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:22,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:22,522 INFO L215 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] [2024-11-20 00:06:22,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 00:06:22,522 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:22,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1200387777, now seen corresponding path program 1 times [2024-11-20 00:06:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:22,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930504391] [2024-11-20 00:06:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:22,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:22,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:22,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930504391] [2024-11-20 00:06:22,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930504391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:22,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:22,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:22,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742246897] [2024-11-20 00:06:22,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:22,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:22,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:22,956 INFO L87 Difference]: Start difference. First operand 1254 states and 1921 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:25,126 INFO L93 Difference]: Finished difference Result 4209 states and 6546 transitions. [2024-11-20 00:06:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:25,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:25,137 INFO L225 Difference]: With dead ends: 4209 [2024-11-20 00:06:25,138 INFO L226 Difference]: Without dead ends: 2971 [2024-11-20 00:06:25,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:25,141 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 1014 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:25,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1799 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 00:06:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2024-11-20 00:06:25,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2235. [2024-11-20 00:06:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2021 states have (on average 1.52894606630381) internal successors, (3090), 2031 states have internal predecessors, (3090), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2024-11-20 00:06:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3425 transitions. [2024-11-20 00:06:25,346 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3425 transitions. Word has length 124 [2024-11-20 00:06:25,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:25,346 INFO L471 AbstractCegarLoop]: Abstraction has 2235 states and 3425 transitions. [2024-11-20 00:06:25,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3425 transitions. [2024-11-20 00:06:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:25,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:25,349 INFO L215 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] [2024-11-20 00:06:25,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 00:06:25,349 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:25,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash -106754621, now seen corresponding path program 1 times [2024-11-20 00:06:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:25,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592487361] [2024-11-20 00:06:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:25,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:25,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592487361] [2024-11-20 00:06:25,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592487361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:25,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:25,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485687423] [2024-11-20 00:06:25,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:25,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:25,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:25,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:25,500 INFO L87 Difference]: Start difference. First operand 2235 states and 3425 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:26,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:26,546 INFO L93 Difference]: Finished difference Result 5196 states and 8088 transitions. [2024-11-20 00:06:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:06:26,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:26,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:26,557 INFO L225 Difference]: With dead ends: 5196 [2024-11-20 00:06:26,557 INFO L226 Difference]: Without dead ends: 2977 [2024-11-20 00:06:26,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:06:26,562 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 857 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:26,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 754 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 00:06:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2024-11-20 00:06:26,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2235. [2024-11-20 00:06:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2021 states have (on average 1.524492825333993) internal successors, (3081), 2031 states have internal predecessors, (3081), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2024-11-20 00:06:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3416 transitions. [2024-11-20 00:06:26,690 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3416 transitions. Word has length 124 [2024-11-20 00:06:26,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:26,691 INFO L471 AbstractCegarLoop]: Abstraction has 2235 states and 3416 transitions. [2024-11-20 00:06:26,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3416 transitions. [2024-11-20 00:06:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:26,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:26,692 INFO L215 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] [2024-11-20 00:06:26,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 00:06:26,693 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:26,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:26,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1790742145, now seen corresponding path program 1 times [2024-11-20 00:06:26,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:26,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538350671] [2024-11-20 00:06:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:26,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538350671] [2024-11-20 00:06:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538350671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:26,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:26,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:26,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990303123] [2024-11-20 00:06:26,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:26,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:26,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:26,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:26,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:26,923 INFO L87 Difference]: Start difference. First operand 2235 states and 3416 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:29,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:29,138 INFO L93 Difference]: Finished difference Result 7694 states and 11908 transitions. [2024-11-20 00:06:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:06:29,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:29,170 INFO L225 Difference]: With dead ends: 7694 [2024-11-20 00:06:29,174 INFO L226 Difference]: Without dead ends: 5475 [2024-11-20 00:06:29,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:06:29,189 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 1006 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:29,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1799 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:06:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2024-11-20 00:06:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 4209. [2024-11-20 00:06:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 3811 states have (on average 1.5200734715297821) internal successors, (5793), 3829 states have internal predecessors, (5793), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2024-11-20 00:06:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 6446 transitions. [2024-11-20 00:06:29,759 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 6446 transitions. Word has length 124 [2024-11-20 00:06:29,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:29,760 INFO L471 AbstractCegarLoop]: Abstraction has 4209 states and 6446 transitions. [2024-11-20 00:06:29,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 6446 transitions. [2024-11-20 00:06:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:29,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:29,766 INFO L215 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] [2024-11-20 00:06:29,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 00:06:29,766 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:29,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1473184253, now seen corresponding path program 1 times [2024-11-20 00:06:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:29,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693589332] [2024-11-20 00:06:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:29,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693589332] [2024-11-20 00:06:29,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693589332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:29,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:29,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103085254] [2024-11-20 00:06:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:29,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:29,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:29,949 INFO L87 Difference]: Start difference. First operand 4209 states and 6446 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:31,206 INFO L93 Difference]: Finished difference Result 9700 states and 15071 transitions. [2024-11-20 00:06:31,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:06:31,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:31,233 INFO L225 Difference]: With dead ends: 9700 [2024-11-20 00:06:31,234 INFO L226 Difference]: Without dead ends: 5507 [2024-11-20 00:06:31,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:06:31,241 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 884 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:31,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 751 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:06:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2024-11-20 00:06:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 4209. [2024-11-20 00:06:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 3811 states have (on average 1.5156127000787194) internal successors, (5776), 3829 states have internal predecessors, (5776), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2024-11-20 00:06:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 6429 transitions. [2024-11-20 00:06:31,491 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 6429 transitions. Word has length 124 [2024-11-20 00:06:31,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:31,491 INFO L471 AbstractCegarLoop]: Abstraction has 4209 states and 6429 transitions. [2024-11-20 00:06:31,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 6429 transitions. [2024-11-20 00:06:31,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:31,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:31,496 INFO L215 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] [2024-11-20 00:06:31,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 00:06:31,496 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:31,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash 915379777, now seen corresponding path program 1 times [2024-11-20 00:06:31,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:31,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769510019] [2024-11-20 00:06:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:31,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769510019] [2024-11-20 00:06:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769510019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:31,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:31,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213215639] [2024-11-20 00:06:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:31,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:31,653 INFO L87 Difference]: Start difference. First operand 4209 states and 6429 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:34,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:34,350 INFO L93 Difference]: Finished difference Result 16184 states and 24970 transitions. [2024-11-20 00:06:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:06:34,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:34,423 INFO L225 Difference]: With dead ends: 16184 [2024-11-20 00:06:34,423 INFO L226 Difference]: Without dead ends: 11991 [2024-11-20 00:06:34,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:06:34,432 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 1060 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:34,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1785 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-20 00:06:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11991 states. [2024-11-20 00:06:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11991 to 7979. [2024-11-20 00:06:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7979 states, 7229 states have (on average 1.507815742149675) internal successors, (10900), 7263 states have internal predecessors, (10900), 519 states have call successors, (519), 199 states have call predecessors, (519), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2024-11-20 00:06:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7979 states to 7979 states and 12211 transitions. [2024-11-20 00:06:34,960 INFO L78 Accepts]: Start accepts. Automaton has 7979 states and 12211 transitions. Word has length 124 [2024-11-20 00:06:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:34,960 INFO L471 AbstractCegarLoop]: Abstraction has 7979 states and 12211 transitions. [2024-11-20 00:06:34,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7979 states and 12211 transitions. [2024-11-20 00:06:34,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:34,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:34,965 INFO L215 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] [2024-11-20 00:06:34,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 00:06:34,965 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:34,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1778516413, now seen corresponding path program 1 times [2024-11-20 00:06:34,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:34,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167516403] [2024-11-20 00:06:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:34,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:35,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:35,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167516403] [2024-11-20 00:06:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167516403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:35,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:35,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807523493] [2024-11-20 00:06:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:35,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:35,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:35,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:35,128 INFO L87 Difference]: Start difference. First operand 7979 states and 12211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:38,255 INFO L93 Difference]: Finished difference Result 30640 states and 47378 transitions. [2024-11-20 00:06:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:06:38,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:38,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:38,308 INFO L225 Difference]: With dead ends: 30640 [2024-11-20 00:06:38,308 INFO L226 Difference]: Without dead ends: 22677 [2024-11-20 00:06:38,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:06:38,329 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 1216 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:38,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1789 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:06:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22677 states. [2024-11-20 00:06:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22677 to 15660. [2024-11-20 00:06:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15660 states, 14222 states have (on average 1.5079454366474476) internal successors, (21446), 14288 states have internal predecessors, (21446), 983 states have call successors, (983), 391 states have call predecessors, (983), 454 states have return successors, (1774), 1044 states have call predecessors, (1774), 981 states have call successors, (1774) [2024-11-20 00:06:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15660 states to 15660 states and 24203 transitions. [2024-11-20 00:06:39,608 INFO L78 Accepts]: Start accepts. Automaton has 15660 states and 24203 transitions. Word has length 124 [2024-11-20 00:06:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:39,609 INFO L471 AbstractCegarLoop]: Abstraction has 15660 states and 24203 transitions. [2024-11-20 00:06:39,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 15660 states and 24203 transitions. [2024-11-20 00:06:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:39,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:39,617 INFO L215 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] [2024-11-20 00:06:39,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 00:06:39,617 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:39,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1459719681, now seen corresponding path program 1 times [2024-11-20 00:06:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717377018] [2024-11-20 00:06:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:39,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:39,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:39,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:39,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:39,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:39,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:39,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717377018] [2024-11-20 00:06:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717377018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:39,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916101779] [2024-11-20 00:06:39,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:39,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:39,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:39,795 INFO L87 Difference]: Start difference. First operand 15660 states and 24203 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:44,186 INFO L93 Difference]: Finished difference Result 58445 states and 91316 transitions. [2024-11-20 00:06:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:06:44,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:44,317 INFO L225 Difference]: With dead ends: 58445 [2024-11-20 00:06:44,317 INFO L226 Difference]: Without dead ends: 42801 [2024-11-20 00:06:44,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:06:44,362 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 1133 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:44,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1789 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:06:44,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42801 states. [2024-11-20 00:06:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42801 to 31054. [2024-11-20 00:06:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31054 states, 28272 states have (on average 1.5102574985851727) internal successors, (42698), 28402 states have internal predecessors, (42698), 1879 states have call successors, (1879), 775 states have call predecessors, (1879), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2024-11-20 00:06:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31054 states to 31054 states and 48769 transitions. [2024-11-20 00:06:46,749 INFO L78 Accepts]: Start accepts. Automaton has 31054 states and 48769 transitions. Word has length 124 [2024-11-20 00:06:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:46,749 INFO L471 AbstractCegarLoop]: Abstraction has 31054 states and 48769 transitions. [2024-11-20 00:06:46,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 31054 states and 48769 transitions. [2024-11-20 00:06:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:06:46,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:46,762 INFO L215 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] [2024-11-20 00:06:46,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 00:06:46,762 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:46,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash -159255233, now seen corresponding path program 1 times [2024-11-20 00:06:46,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:46,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672199157] [2024-11-20 00:06:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:46,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:46,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:46,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:06:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:46,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:06:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:46,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:06:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:46,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:06:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:06:46,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:46,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672199157] [2024-11-20 00:06:46,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672199157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:46,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:06:46,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:06:46,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645888436] [2024-11-20 00:06:46,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:46,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:06:46,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:46,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:06:46,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:06:46,898 INFO L87 Difference]: Start difference. First operand 31054 states and 48769 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:06:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:54,669 INFO L93 Difference]: Finished difference Result 113901 states and 180796 transitions. [2024-11-20 00:06:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:06:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 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 124 [2024-11-20 00:06:54,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:54,972 INFO L225 Difference]: With dead ends: 113901 [2024-11-20 00:06:54,972 INFO L226 Difference]: Without dead ends: 82863 [2024-11-20 00:06:55,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:06:55,064 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 1093 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:55,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1789 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-20 00:06:55,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82863 states. [2024-11-20 00:07:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82863 to 61775. [2024-11-20 00:07:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61775 states, 56369 states have (on average 1.5125334847167768) internal successors, (85260), 56627 states have internal predecessors, (85260), 3607 states have call successors, (3607), 1543 states have call predecessors, (3607), 1798 states have return successors, (10422), 3860 states have call predecessors, (10422), 3605 states have call successors, (10422) [2024-11-20 00:07:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61775 states to 61775 states and 99289 transitions. [2024-11-20 00:07:00,300 INFO L78 Accepts]: Start accepts. Automaton has 61775 states and 99289 transitions. Word has length 124 [2024-11-20 00:07:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:07:00,300 INFO L471 AbstractCegarLoop]: Abstraction has 61775 states and 99289 transitions. [2024-11-20 00:07:00,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 00:07:00,301 INFO L276 IsEmpty]: Start isEmpty. Operand 61775 states and 99289 transitions. [2024-11-20 00:07:00,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-20 00:07:00,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:07:00,329 INFO L215 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] [2024-11-20 00:07:00,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 00:07:00,329 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:07:00,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:07:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1042764223, now seen corresponding path program 1 times [2024-11-20 00:07:00,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:07:00,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156632503] [2024-11-20 00:07:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:07:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:07:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:00,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:07:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:00,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 00:07:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:00,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-20 00:07:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:00,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-20 00:07:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:00,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-20 00:07:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:07:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 00:07:00,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:07:00,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156632503] [2024-11-20 00:07:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156632503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:07:00,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:07:00,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:07:00,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112471078] [2024-11-20 00:07:00,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:07:00,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:07:00,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:07:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:07:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:07:00,459 INFO L87 Difference]: Start difference. First operand 61775 states and 99289 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)