./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.03.cil-1.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.03.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5746a53d1ab0f7d20d2e5362b7235e80167d7cee80ddadf160c57caf25829fe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 00:05:18,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 00:05:18,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 00:05:18,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 00:05:18,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 00:05:18,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 00:05:18,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 00:05:18,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 00:05:18,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 00:05:18,468 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 00:05:18,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 00:05:18,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 00:05:18,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 00:05:18,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 00:05:18,470 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 00:05:18,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 00:05:18,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 00:05:18,471 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 00:05:18,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 00:05:18,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 00:05:18,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 00:05:18,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 00:05:18,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 00:05:18,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 00:05:18,477 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 00:05:18,478 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 00:05:18,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 00:05:18,478 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 00:05:18,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 00:05:18,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 00:05:18,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 00:05:18,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 00:05:18,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:05:18,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 00:05:18,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 00:05:18,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 00:05:18,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 00:05:18,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 00:05:18,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 00:05:18,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 00:05:18,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 00:05:18,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 00:05:18,489 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5746a53d1ab0f7d20d2e5362b7235e80167d7cee80ddadf160c57caf25829fe [2024-11-20 00:05:18,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 00:05:18,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 00:05:18,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 00:05:18,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 00:05:18,750 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 00:05:18,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c [2024-11-20 00:05:20,271 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 00:05:20,493 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 00:05:20,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.03.cil-1.c [2024-11-20 00:05:20,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20092dcf/1bb2a3ac83e0463983656a1d674ea527/FLAG0204187e0 [2024-11-20 00:05:20,855 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b20092dcf/1bb2a3ac83e0463983656a1d674ea527 [2024-11-20 00:05:20,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 00:05:20,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 00:05:20,860 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 00:05:20,860 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 00:05:20,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 00:05:20,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:05:20" (1/1) ... [2024-11-20 00:05:20,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c4916f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:20, skipping insertion in model container [2024-11-20 00:05:20,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:05:20" (1/1) ... [2024-11-20 00:05:20,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 00:05:21,108 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.03.cil-1.c[913,926] [2024-11-20 00:05:21,170 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.03.cil-1.c[5977,5990] [2024-11-20 00:05:21,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:05:21,241 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 00:05:21,252 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.03.cil-1.c[913,926] [2024-11-20 00:05:21,268 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.03.cil-1.c[5977,5990] [2024-11-20 00:05:21,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 00:05:21,327 INFO L204 MainTranslator]: Completed translation [2024-11-20 00:05:21,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21 WrapperNode [2024-11-20 00:05:21,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 00:05:21,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 00:05:21,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 00:05:21,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 00:05:21,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,405 INFO L138 Inliner]: procedures = 54, calls = 58, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 549 [2024-11-20 00:05:21,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 00:05:21,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 00:05:21,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 00:05:21,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 00:05:21,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,472 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 00:05:21,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,518 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,540 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 00:05:21,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 00:05:21,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 00:05:21,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 00:05:21,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (1/1) ... [2024-11-20 00:05:21,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 00:05:21,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:21,617 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 00:05:21,623 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 00:05:21,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 00:05:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-20 00:05:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-20 00:05:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-20 00:05:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-20 00:05:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-20 00:05:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-20 00:05:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-20 00:05:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-20 00:05:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-20 00:05:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-20 00:05:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-20 00:05:21,670 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-20 00:05:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-20 00:05:21,670 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-20 00:05:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 00:05:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-20 00:05:21,670 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-20 00:05:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 00:05:21,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 00:05:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-20 00:05:21,671 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-20 00:05:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-20 00:05:21,671 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-20 00:05:21,777 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 00:05:21,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 00:05:22,346 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-20 00:05:22,347 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 00:05:22,376 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 00:05:22,376 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-20 00:05:22,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:22 BoogieIcfgContainer [2024-11-20 00:05:22,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 00:05:22,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 00:05:22,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 00:05:22,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 00:05:22,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:05:20" (1/3) ... [2024-11-20 00:05:22,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b872976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:05:22, skipping insertion in model container [2024-11-20 00:05:22,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:21" (2/3) ... [2024-11-20 00:05:22,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b872976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:05:22, skipping insertion in model container [2024-11-20 00:05:22,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:22" (3/3) ... [2024-11-20 00:05:22,391 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.03.cil-1.c [2024-11-20 00:05:22,412 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 00:05:22,412 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 00:05:22,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 00:05:22,487 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;@226e0d7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 00:05:22,488 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 00:05:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 203 states have (on average 1.5812807881773399) internal successors, (321), 210 states have internal predecessors, (321), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-20 00:05:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 00:05:22,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:22,504 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 00:05:22,505 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:22,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1404070577, now seen corresponding path program 1 times [2024-11-20 00:05:22,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:22,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458385965] [2024-11-20 00:05:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:22,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:22,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:22,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-20 00:05:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:22,891 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 00:05:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:22,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458385965] [2024-11-20 00:05:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458385965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:05:22,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248615125] [2024-11-20 00:05:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:22,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:05:22,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:22,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:05:22,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:05:22,942 INFO L87 Difference]: Start difference. First operand has 241 states, 203 states have (on average 1.5812807881773399) internal successors, (321), 210 states have internal predecessors, (321), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) 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 00:05:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:23,358 INFO L93 Difference]: Finished difference Result 535 states and 828 transitions. [2024-11-20 00:05:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:05:23,361 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 00:05:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:23,372 INFO L225 Difference]: With dead ends: 535 [2024-11-20 00:05:23,372 INFO L226 Difference]: Without dead ends: 300 [2024-11-20 00:05:23,376 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 00:05:23,379 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 420 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:23,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 520 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 00:05:23,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-20 00:05:23,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 294. [2024-11-20 00:05:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 252 states have (on average 1.4523809523809523) internal successors, (366), 257 states have internal predecessors, (366), 29 states have call successors, (29), 12 states have call predecessors, (29), 11 states have return successors, (31), 25 states have call predecessors, (31), 25 states have call successors, (31) [2024-11-20 00:05:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2024-11-20 00:05:23,440 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 44 [2024-11-20 00:05:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:23,440 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2024-11-20 00:05:23,440 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 00:05:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2024-11-20 00:05:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 00:05:23,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:23,447 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 00:05:23,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 00:05:23,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:23,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash 10439565, now seen corresponding path program 1 times [2024-11-20 00:05:23,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:23,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974016684] [2024-11-20 00:05:23,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:23,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:23,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:23,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 00:05:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:23,577 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 00:05:23,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974016684] [2024-11-20 00:05:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974016684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:23,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:23,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:05:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441079438] [2024-11-20 00:05:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:23,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:05:23,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:05:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:05:23,585 INFO L87 Difference]: Start difference. First operand 294 states and 426 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 00:05:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:23,990 INFO L93 Difference]: Finished difference Result 542 states and 766 transitions. [2024-11-20 00:05:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:05:23,991 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 00:05:23,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:23,998 INFO L225 Difference]: With dead ends: 542 [2024-11-20 00:05:23,998 INFO L226 Difference]: Without dead ends: 418 [2024-11-20 00:05:23,999 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 00:05:24,000 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 190 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:24,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 677 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 00:05:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-20 00:05:24,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 361. [2024-11-20 00:05:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 313 states have (on average 1.4376996805111821) internal successors, (450), 318 states have internal predecessors, (450), 32 states have call successors, (32), 15 states have call predecessors, (32), 14 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-20 00:05:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 516 transitions. [2024-11-20 00:05:24,055 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 516 transitions. Word has length 45 [2024-11-20 00:05:24,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:24,056 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 516 transitions. [2024-11-20 00:05:24,056 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 00:05:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 516 transitions. [2024-11-20 00:05:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 00:05:24,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:24,058 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 00:05:24,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 00:05:24,059 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:24,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1273917896, now seen corresponding path program 1 times [2024-11-20 00:05:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:24,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755316748] [2024-11-20 00:05:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:24,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:24,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-20 00:05:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:24,164 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 00:05:24,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:24,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755316748] [2024-11-20 00:05:24,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755316748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:24,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:24,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:05:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564203588] [2024-11-20 00:05:24,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:24,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:05:24,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:24,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:05:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:05:24,171 INFO L87 Difference]: Start difference. First operand 361 states and 516 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 00:05:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:24,451 INFO L93 Difference]: Finished difference Result 769 states and 1075 transitions. [2024-11-20 00:05:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:05:24,452 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 00:05:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:24,456 INFO L225 Difference]: With dead ends: 769 [2024-11-20 00:05:24,456 INFO L226 Difference]: Without dead ends: 578 [2024-11-20 00:05:24,457 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 00:05:24,458 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 430 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:24,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 511 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 00:05:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-20 00:05:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 526. [2024-11-20 00:05:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 459 states have (on average 1.3943355119825709) internal successors, (640), 467 states have internal predecessors, (640), 43 states have call successors, (43), 22 states have call predecessors, (43), 22 states have return successors, (51), 37 states have call predecessors, (51), 39 states have call successors, (51) [2024-11-20 00:05:24,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 734 transitions. [2024-11-20 00:05:24,506 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 734 transitions. Word has length 45 [2024-11-20 00:05:24,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:24,506 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 734 transitions. [2024-11-20 00:05:24,507 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 00:05:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 734 transitions. [2024-11-20 00:05:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 00:05:24,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:24,510 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 00:05:24,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 00:05:24,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:24,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:24,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1315446913, now seen corresponding path program 1 times [2024-11-20 00:05:24,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:24,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771548702] [2024-11-20 00:05:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:24,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:24,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:24,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-20 00:05:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:24,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 00:05:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:24,625 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 00:05:24,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:24,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771548702] [2024-11-20 00:05:24,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771548702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:24,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:24,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:05:24,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552084852] [2024-11-20 00:05:24,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:24,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:05:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:24,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:05:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:05:24,629 INFO L87 Difference]: Start difference. First operand 526 states and 734 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 00:05:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:24,936 INFO L93 Difference]: Finished difference Result 1110 states and 1519 transitions. [2024-11-20 00:05:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:05:24,936 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 00:05:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:24,941 INFO L225 Difference]: With dead ends: 1110 [2024-11-20 00:05:24,941 INFO L226 Difference]: Without dead ends: 754 [2024-11-20 00:05:24,942 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 00:05:24,943 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 174 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:24,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 730 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 00:05:24,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-20 00:05:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 716. [2024-11-20 00:05:25,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 625 states have (on average 1.344) internal successors, (840), 635 states have internal predecessors, (840), 57 states have call successors, (57), 30 states have call predecessors, (57), 32 states have return successors, (75), 51 states have call predecessors, (75), 53 states have call successors, (75) [2024-11-20 00:05:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 972 transitions. [2024-11-20 00:05:25,019 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 972 transitions. Word has length 62 [2024-11-20 00:05:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:25,020 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 972 transitions. [2024-11-20 00:05:25,020 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 00:05:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 972 transitions. [2024-11-20 00:05:25,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-20 00:05:25,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:25,024 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 00:05:25,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 00:05:25,025 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:25,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash -322850286, now seen corresponding path program 1 times [2024-11-20 00:05:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058872750] [2024-11-20 00:05:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-20 00:05:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-20 00:05:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,105 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 00:05:25,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:25,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058872750] [2024-11-20 00:05:25,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058872750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:25,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:25,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 00:05:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993559227] [2024-11-20 00:05:25,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:25,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:05:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:05:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 00:05:25,108 INFO L87 Difference]: Start difference. First operand 716 states and 972 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 00:05:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:25,367 INFO L93 Difference]: Finished difference Result 1369 states and 1825 transitions. [2024-11-20 00:05:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 00:05:25,367 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 00:05:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:25,375 INFO L225 Difference]: With dead ends: 1369 [2024-11-20 00:05:25,376 INFO L226 Difference]: Without dead ends: 915 [2024-11-20 00:05:25,378 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 00:05:25,379 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 417 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:25,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 510 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 00:05:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2024-11-20 00:05:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 860. [2024-11-20 00:05:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 753 states have (on average 1.3160690571049136) internal successors, (991), 765 states have internal predecessors, (991), 65 states have call successors, (65), 36 states have call predecessors, (65), 40 states have return successors, (89), 59 states have call predecessors, (89), 61 states have call successors, (89) [2024-11-20 00:05:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1145 transitions. [2024-11-20 00:05:25,435 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1145 transitions. Word has length 67 [2024-11-20 00:05:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:25,436 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1145 transitions. [2024-11-20 00:05:25,436 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 00:05:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1145 transitions. [2024-11-20 00:05:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-20 00:05:25,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:25,439 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 00:05:25,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 00:05:25,440 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:25,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:25,441 INFO L85 PathProgramCache]: Analyzing trace with hash -189081006, now seen corresponding path program 1 times [2024-11-20 00:05:25,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:25,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215461168] [2024-11-20 00:05:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:25,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:05:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 00:05:25,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215461168] [2024-11-20 00:05:25,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215461168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697642215] [2024-11-20 00:05:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:25,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:25,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:25,570 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 00:05:25,572 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 00:05:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:25,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 00:05:25,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:05:25,800 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 00:05:25,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:05:25,857 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 00:05:25,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697642215] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:25,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 00:05:25,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-11-20 00:05:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561024216] [2024-11-20 00:05:25,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:25,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 00:05:25,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 00:05:25,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:25,860 INFO L87 Difference]: Start difference. First operand 860 states and 1145 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 00:05:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:26,013 INFO L93 Difference]: Finished difference Result 916 states and 1213 transitions. [2024-11-20 00:05:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 00:05:26,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 00:05:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:26,020 INFO L225 Difference]: With dead ends: 916 [2024-11-20 00:05:26,020 INFO L226 Difference]: Without dead ends: 913 [2024-11-20 00:05:26,021 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 00:05:26,024 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 585 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:26,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 426 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 00:05:26,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-11-20 00:05:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 859. [2024-11-20 00:05:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 753 states have (on average 1.3134130146082337) internal successors, (989), 764 states have internal predecessors, (989), 64 states have call successors, (64), 36 states have call predecessors, (64), 40 states have return successors, (89), 59 states have call predecessors, (89), 61 states have call successors, (89) [2024-11-20 00:05:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1142 transitions. [2024-11-20 00:05:26,078 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1142 transitions. Word has length 68 [2024-11-20 00:05:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:26,079 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 1142 transitions. [2024-11-20 00:05:26,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 00:05:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1142 transitions. [2024-11-20 00:05:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-20 00:05:26,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:26,081 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, 1] [2024-11-20 00:05:26,092 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 00:05:26,281 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 00:05:26,282 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:26,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:26,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1567308267, now seen corresponding path program 1 times [2024-11-20 00:05:26,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:26,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052452987] [2024-11-20 00:05:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:26,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:26,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:26,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:26,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-20 00:05:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 00:05:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052452987] [2024-11-20 00:05:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052452987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:26,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609561076] [2024-11-20 00:05:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:26,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:26,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:26,435 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 00:05:26,438 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 00:05:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:26,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 00:05:26,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:05:26,781 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 00:05:26,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 00:05:26,876 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 00:05:26,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609561076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 00:05:26,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 00:05:26,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-11-20 00:05:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745148687] [2024-11-20 00:05:26,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 00:05:26,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 00:05:26,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 00:05:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:05:26,879 INFO L87 Difference]: Start difference. First operand 859 states and 1142 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 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 00:05:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:27,897 INFO L93 Difference]: Finished difference Result 2366 states and 3130 transitions. [2024-11-20 00:05:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-20 00:05:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 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 00:05:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:27,909 INFO L225 Difference]: With dead ends: 2366 [2024-11-20 00:05:27,910 INFO L226 Difference]: Without dead ends: 1822 [2024-11-20 00:05:27,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-20 00:05:27,914 INFO L432 NwaCegarLoop]: 326 mSDtfsCounter, 902 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:27,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 2078 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 00:05:27,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2024-11-20 00:05:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1222. [2024-11-20 00:05:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1077 states have (on average 1.2896935933147633) internal successors, (1389), 1096 states have internal predecessors, (1389), 84 states have call successors, (84), 50 states have call predecessors, (84), 59 states have return successors, (123), 76 states have call predecessors, (123), 81 states have call successors, (123) [2024-11-20 00:05:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1596 transitions. [2024-11-20 00:05:28,034 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1596 transitions. Word has length 69 [2024-11-20 00:05:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:28,034 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 1596 transitions. [2024-11-20 00:05:28,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 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 00:05:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1596 transitions. [2024-11-20 00:05:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 00:05:28,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:28,038 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] [2024-11-20 00:05:28,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 00:05:28,238 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 00:05:28,239 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:28,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash -534656364, now seen corresponding path program 1 times [2024-11-20 00:05:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:28,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772738459] [2024-11-20 00:05:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:28,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:28,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:28,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:28,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:28,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:28,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:28,353 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 00:05:28,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:28,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772738459] [2024-11-20 00:05:28,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772738459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:28,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:28,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:05:28,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472118177] [2024-11-20 00:05:28,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:28,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:05:28,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:28,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:05:28,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:05:28,355 INFO L87 Difference]: Start difference. First operand 1222 states and 1596 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 00:05:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:29,370 INFO L93 Difference]: Finished difference Result 1612 states and 2195 transitions. [2024-11-20 00:05:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:05:29,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 80 [2024-11-20 00:05:29,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:29,377 INFO L225 Difference]: With dead ends: 1612 [2024-11-20 00:05:29,378 INFO L226 Difference]: Without dead ends: 1460 [2024-11-20 00:05:29,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:05:29,379 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 691 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:29,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 799 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 00:05:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2024-11-20 00:05:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1373. [2024-11-20 00:05:29,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1209 states have (on average 1.315136476426799) internal successors, (1590), 1229 states have internal predecessors, (1590), 96 states have call successors, (96), 56 states have call predecessors, (96), 66 states have return successors, (138), 88 states have call predecessors, (138), 93 states have call successors, (138) [2024-11-20 00:05:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1824 transitions. [2024-11-20 00:05:29,470 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1824 transitions. Word has length 80 [2024-11-20 00:05:29,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:29,471 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 1824 transitions. [2024-11-20 00:05:29,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 00:05:29,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1824 transitions. [2024-11-20 00:05:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 00:05:29,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:29,474 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] [2024-11-20 00:05:29,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 00:05:29,475 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:29,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1776096880, now seen corresponding path program 1 times [2024-11-20 00:05:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:29,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794396959] [2024-11-20 00:05:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:29,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:29,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:29,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:29,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:29,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:29,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:29,626 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 00:05:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:29,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794396959] [2024-11-20 00:05:29,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794396959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:29,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:29,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:05:29,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116107148] [2024-11-20 00:05:29,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:29,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:05:29,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:05:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:05:29,628 INFO L87 Difference]: Start difference. First operand 1373 states and 1824 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:31,027 INFO L93 Difference]: Finished difference Result 1958 states and 2716 transitions. [2024-11-20 00:05:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:05:31,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 80 [2024-11-20 00:05:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:31,036 INFO L225 Difference]: With dead ends: 1958 [2024-11-20 00:05:31,037 INFO L226 Difference]: Without dead ends: 1655 [2024-11-20 00:05:31,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:05:31,040 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 686 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:31,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1370 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 00:05:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2024-11-20 00:05:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1515. [2024-11-20 00:05:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1332 states have (on average 1.3310810810810811) internal successors, (1773), 1353 states have internal predecessors, (1773), 108 states have call successors, (108), 62 states have call predecessors, (108), 73 states have return successors, (152), 101 states have call predecessors, (152), 105 states have call successors, (152) [2024-11-20 00:05:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2033 transitions. [2024-11-20 00:05:31,146 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2033 transitions. Word has length 80 [2024-11-20 00:05:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:31,147 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 2033 transitions. [2024-11-20 00:05:31,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:31,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2033 transitions. [2024-11-20 00:05:31,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 00:05:31,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:31,151 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] [2024-11-20 00:05:31,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 00:05:31,151 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:31,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash 832690578, now seen corresponding path program 1 times [2024-11-20 00:05:31,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:31,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842907653] [2024-11-20 00:05:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:31,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:31,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:31,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:31,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:31,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:31,293 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 00:05:31,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:31,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842907653] [2024-11-20 00:05:31,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842907653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:31,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:31,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:05:31,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916343286] [2024-11-20 00:05:31,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:31,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:05:31,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:05:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:05:31,295 INFO L87 Difference]: Start difference. First operand 1515 states and 2033 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:32,687 INFO L93 Difference]: Finished difference Result 2467 states and 3481 transitions. [2024-11-20 00:05:32,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 00:05:32,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 80 [2024-11-20 00:05:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:32,697 INFO L225 Difference]: With dead ends: 2467 [2024-11-20 00:05:32,697 INFO L226 Difference]: Without dead ends: 2022 [2024-11-20 00:05:32,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-20 00:05:32,699 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 684 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:32,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1368 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 00:05:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2024-11-20 00:05:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1800. [2024-11-20 00:05:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1579 states have (on average 1.3552881570614312) internal successors, (2140), 1602 states have internal predecessors, (2140), 132 states have call successors, (132), 74 states have call predecessors, (132), 87 states have return successors, (184), 127 states have call predecessors, (184), 129 states have call successors, (184) [2024-11-20 00:05:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2456 transitions. [2024-11-20 00:05:32,832 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2456 transitions. Word has length 80 [2024-11-20 00:05:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:32,832 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2456 transitions. [2024-11-20 00:05:32,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:32,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2456 transitions. [2024-11-20 00:05:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 00:05:32,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:32,836 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] [2024-11-20 00:05:32,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 00:05:32,836 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:32,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 778297680, now seen corresponding path program 1 times [2024-11-20 00:05:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551990755] [2024-11-20 00:05:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:32,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:32,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:32,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:32,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:32,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:32,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:32,947 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 00:05:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:32,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551990755] [2024-11-20 00:05:32,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551990755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:32,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:32,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:05:32,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32319693] [2024-11-20 00:05:32,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:32,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:05:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:05:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:05:32,950 INFO L87 Difference]: Start difference. First operand 1800 states and 2456 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:33,743 INFO L93 Difference]: Finished difference Result 2740 states and 3895 transitions. [2024-11-20 00:05:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:05:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 80 [2024-11-20 00:05:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:33,755 INFO L225 Difference]: With dead ends: 2740 [2024-11-20 00:05:33,755 INFO L226 Difference]: Without dead ends: 2010 [2024-11-20 00:05:33,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:05:33,760 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 560 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:33,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 814 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 00:05:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2024-11-20 00:05:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1800. [2024-11-20 00:05:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1579 states have (on average 1.3521215959468018) internal successors, (2135), 1602 states have internal predecessors, (2135), 132 states have call successors, (132), 74 states have call predecessors, (132), 87 states have return successors, (184), 127 states have call predecessors, (184), 129 states have call successors, (184) [2024-11-20 00:05:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2451 transitions. [2024-11-20 00:05:33,963 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2451 transitions. Word has length 80 [2024-11-20 00:05:33,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:33,964 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2451 transitions. [2024-11-20 00:05:33,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2451 transitions. [2024-11-20 00:05:33,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 00:05:33,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:33,968 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] [2024-11-20 00:05:33,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 00:05:33,969 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:33,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash 360901074, now seen corresponding path program 1 times [2024-11-20 00:05:33,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:33,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747836831] [2024-11-20 00:05:33,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:33,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:34,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:34,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:34,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:34,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:34,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:34,082 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 00:05:34,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:34,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747836831] [2024-11-20 00:05:34,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747836831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:34,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:34,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:05:34,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829011250] [2024-11-20 00:05:34,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:34,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:05:34,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:05:34,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:05:34,085 INFO L87 Difference]: Start difference. First operand 1800 states and 2451 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:34,748 INFO L93 Difference]: Finished difference Result 2734 states and 3869 transitions. [2024-11-20 00:05:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 00:05:34,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 80 [2024-11-20 00:05:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:34,758 INFO L225 Difference]: With dead ends: 2734 [2024-11-20 00:05:34,759 INFO L226 Difference]: Without dead ends: 2004 [2024-11-20 00:05:34,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-20 00:05:34,762 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 561 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:34,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 812 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 00:05:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2024-11-20 00:05:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1800. [2024-11-20 00:05:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1579 states have (on average 1.3489550348321722) internal successors, (2130), 1602 states have internal predecessors, (2130), 132 states have call successors, (132), 74 states have call predecessors, (132), 87 states have return successors, (184), 127 states have call predecessors, (184), 129 states have call successors, (184) [2024-11-20 00:05:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2446 transitions. [2024-11-20 00:05:34,893 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2446 transitions. Word has length 80 [2024-11-20 00:05:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:34,894 INFO L471 AbstractCegarLoop]: Abstraction has 1800 states and 2446 transitions. [2024-11-20 00:05:34,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2446 transitions. [2024-11-20 00:05:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 00:05:34,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:34,897 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] [2024-11-20 00:05:34,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 00:05:34,897 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:34,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1040173328, now seen corresponding path program 1 times [2024-11-20 00:05:34,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:34,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321134539] [2024-11-20 00:05:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:34,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:35,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:35,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:35,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:35,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:35,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:35,072 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 00:05:35,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:35,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321134539] [2024-11-20 00:05:35,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321134539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:35,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:35,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:05:35,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813251676] [2024-11-20 00:05:35,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:35,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:05:35,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:35,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:05:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:05:35,075 INFO L87 Difference]: Start difference. First operand 1800 states and 2446 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:36,186 INFO L93 Difference]: Finished difference Result 3537 states and 5034 transitions. [2024-11-20 00:05:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:05:36,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 80 [2024-11-20 00:05:36,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:36,200 INFO L225 Difference]: With dead ends: 3537 [2024-11-20 00:05:36,200 INFO L226 Difference]: Without dead ends: 2807 [2024-11-20 00:05:36,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:05:36,204 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 768 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:36,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 993 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 00:05:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2024-11-20 00:05:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2372. [2024-11-20 00:05:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2079 states have (on average 1.3795093795093796) internal successors, (2868), 2106 states have internal predecessors, (2868), 176 states have call successors, (176), 98 states have call predecessors, (176), 115 states have return successors, (250), 175 states have call predecessors, (250), 173 states have call successors, (250) [2024-11-20 00:05:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3294 transitions. [2024-11-20 00:05:36,442 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3294 transitions. Word has length 80 [2024-11-20 00:05:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:36,443 INFO L471 AbstractCegarLoop]: Abstraction has 2372 states and 3294 transitions. [2024-11-20 00:05:36,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:36,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3294 transitions. [2024-11-20 00:05:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 00:05:36,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:36,448 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] [2024-11-20 00:05:36,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 00:05:36,449 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:36,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1241997262, now seen corresponding path program 1 times [2024-11-20 00:05:36,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:36,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252018912] [2024-11-20 00:05:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:36,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:36,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:36,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:36,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:36,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:36,619 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 00:05:36,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:36,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252018912] [2024-11-20 00:05:36,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252018912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:36,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:36,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 00:05:36,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951808048] [2024-11-20 00:05:36,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:36,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 00:05:36,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:36,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 00:05:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:05:36,624 INFO L87 Difference]: Start difference. First operand 2372 states and 3294 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:37,936 INFO L93 Difference]: Finished difference Result 5463 states and 7896 transitions. [2024-11-20 00:05:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 00:05:37,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 80 [2024-11-20 00:05:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:37,959 INFO L225 Difference]: With dead ends: 5463 [2024-11-20 00:05:37,959 INFO L226 Difference]: Without dead ends: 4161 [2024-11-20 00:05:37,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-20 00:05:37,966 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 669 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:37,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1358 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 00:05:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2024-11-20 00:05:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 3505. [2024-11-20 00:05:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 3072 states have (on average 1.4108072916666667) internal successors, (4334), 3107 states have internal predecessors, (4334), 260 states have call successors, (260), 146 states have call predecessors, (260), 171 states have return successors, (396), 267 states have call predecessors, (396), 257 states have call successors, (396) [2024-11-20 00:05:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4990 transitions. [2024-11-20 00:05:38,270 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4990 transitions. Word has length 80 [2024-11-20 00:05:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:38,270 INFO L471 AbstractCegarLoop]: Abstraction has 3505 states and 4990 transitions. [2024-11-20 00:05:38,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 00:05:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4990 transitions. [2024-11-20 00:05:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 00:05:38,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:38,275 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] [2024-11-20 00:05:38,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 00:05:38,275 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:38,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1802697040, now seen corresponding path program 1 times [2024-11-20 00:05:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:38,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352933264] [2024-11-20 00:05:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:38,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:38,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:38,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:38,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:38,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:38,368 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 00:05:38,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:38,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352933264] [2024-11-20 00:05:38,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352933264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:38,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 00:05:38,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 00:05:38,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437241527] [2024-11-20 00:05:38,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:38,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 00:05:38,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:38,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 00:05:38,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 00:05:38,370 INFO L87 Difference]: Start difference. First operand 3505 states and 4990 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 00:05:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:39,647 INFO L93 Difference]: Finished difference Result 9219 states and 13484 transitions. [2024-11-20 00:05:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 00:05:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 80 [2024-11-20 00:05:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:39,692 INFO L225 Difference]: With dead ends: 9219 [2024-11-20 00:05:39,692 INFO L226 Difference]: Without dead ends: 6785 [2024-11-20 00:05:39,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-20 00:05:39,704 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 849 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:39,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1001 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 00:05:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6785 states. [2024-11-20 00:05:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6785 to 5764. [2024-11-20 00:05:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5764 states, 5024 states have (on average 1.4160031847133758) internal successors, (7114), 5092 states have internal predecessors, (7114), 449 states have call successors, (449), 248 states have call predecessors, (449), 289 states have return successors, (667), 439 states have call predecessors, (667), 446 states have call successors, (667) [2024-11-20 00:05:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5764 states to 5764 states and 8230 transitions. [2024-11-20 00:05:40,172 INFO L78 Accepts]: Start accepts. Automaton has 5764 states and 8230 transitions. Word has length 80 [2024-11-20 00:05:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:40,172 INFO L471 AbstractCegarLoop]: Abstraction has 5764 states and 8230 transitions. [2024-11-20 00:05:40,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 00:05:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5764 states and 8230 transitions. [2024-11-20 00:05:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-20 00:05:40,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:40,179 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 00:05:40,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 00:05:40,180 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:40,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1841362161, now seen corresponding path program 1 times [2024-11-20 00:05:40,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263533581] [2024-11-20 00:05:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:40,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:40,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:40,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-20 00:05:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:40,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 00:05:40,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-20 00:05:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263533581] [2024-11-20 00:05:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263533581] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659229767] [2024-11-20 00:05:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:40,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:40,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:40,273 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 00:05:40,274 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 00:05:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:40,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 00:05:40,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:05:40,393 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-20 00:05:40,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:05:40,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659229767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:40,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:05:40,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-20 00:05:40,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678771901] [2024-11-20 00:05:40,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:40,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:05:40,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:05:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:05:40,397 INFO L87 Difference]: Start difference. First operand 5764 states and 8230 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 00:05:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:40,701 INFO L93 Difference]: Finished difference Result 6461 states and 9134 transitions. [2024-11-20 00:05:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:05:40,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-20 00:05:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:40,730 INFO L225 Difference]: With dead ends: 6461 [2024-11-20 00:05:40,730 INFO L226 Difference]: Without dead ends: 5642 [2024-11-20 00:05:40,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 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 00:05:40,735 INFO L432 NwaCegarLoop]: 363 mSDtfsCounter, 293 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:40,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 438 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:05:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2024-11-20 00:05:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5627. [2024-11-20 00:05:41,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5627 states, 4903 states have (on average 1.418723230675097) internal successors, (6956), 4970 states have internal predecessors, (6956), 441 states have call successors, (441), 242 states have call predecessors, (441), 281 states have return successors, (653), 430 states have call predecessors, (653), 438 states have call successors, (653) [2024-11-20 00:05:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 8050 transitions. [2024-11-20 00:05:41,264 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 8050 transitions. Word has length 88 [2024-11-20 00:05:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:41,264 INFO L471 AbstractCegarLoop]: Abstraction has 5627 states and 8050 transitions. [2024-11-20 00:05:41,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 00:05:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 8050 transitions. [2024-11-20 00:05:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-20 00:05:41,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:41,272 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 00:05:41,281 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 00:05:41,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:41,477 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:41,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:41,477 INFO L85 PathProgramCache]: Analyzing trace with hash -721497787, now seen corresponding path program 1 times [2024-11-20 00:05:41,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:41,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221314769] [2024-11-20 00:05:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:41,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:41,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 00:05:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:41,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:41,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-20 00:05:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:41,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-20 00:05:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:41,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-20 00:05:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-20 00:05:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221314769] [2024-11-20 00:05:41,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221314769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:41,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841279723] [2024-11-20 00:05:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:41,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:41,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:41,587 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 00:05:41,588 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 00:05:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:41,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 00:05:41,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:05:41,710 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 00:05:41,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:05:41,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841279723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:41,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:05:41,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-20 00:05:41,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945359285] [2024-11-20 00:05:41,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:41,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:05:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:41,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:05:41,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 00:05:41,713 INFO L87 Difference]: Start difference. First operand 5627 states and 8050 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 00:05:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:42,016 INFO L93 Difference]: Finished difference Result 6006 states and 8518 transitions. [2024-11-20 00:05:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:05:42,017 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 00:05:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:42,033 INFO L225 Difference]: With dead ends: 6006 [2024-11-20 00:05:42,034 INFO L226 Difference]: Without dead ends: 4706 [2024-11-20 00:05:42,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 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 00:05:42,038 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 62 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:42,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 686 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:05:42,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2024-11-20 00:05:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 4706. [2024-11-20 00:05:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 4085 states have (on average 1.452141982864137) internal successors, (5932), 4136 states have internal predecessors, (5932), 384 states have call successors, (384), 205 states have call predecessors, (384), 236 states have return successors, (561), 380 states have call predecessors, (561), 382 states have call successors, (561) [2024-11-20 00:05:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 6877 transitions. [2024-11-20 00:05:42,448 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 6877 transitions. Word has length 103 [2024-11-20 00:05:42,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:42,449 INFO L471 AbstractCegarLoop]: Abstraction has 4706 states and 6877 transitions. [2024-11-20 00:05:42,449 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 00:05:42,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 6877 transitions. [2024-11-20 00:05:42,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-20 00:05:42,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:42,458 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:42,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 00:05:42,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-20 00:05:42,659 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:42,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1264793319, now seen corresponding path program 1 times [2024-11-20 00:05:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621081090] [2024-11-20 00:05:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-20 00:05:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-20 00:05:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-20 00:05:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,793 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 00:05:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621081090] [2024-11-20 00:05:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621081090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991784331] [2024-11-20 00:05:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:42,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:42,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:42,797 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 00:05:42,799 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 00:05:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:42,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 00:05:42,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:05:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 00:05:42,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:05:42,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991784331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:42,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:05:42,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-20 00:05:42,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956744155] [2024-11-20 00:05:42,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:42,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:05:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:05:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:42,966 INFO L87 Difference]: Start difference. First operand 4706 states and 6877 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:05:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:43,516 INFO L93 Difference]: Finished difference Result 13969 states and 20557 transitions. [2024-11-20 00:05:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:05:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 130 [2024-11-20 00:05:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:43,552 INFO L225 Difference]: With dead ends: 13969 [2024-11-20 00:05:43,553 INFO L226 Difference]: Without dead ends: 9276 [2024-11-20 00:05:43,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:43,572 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 193 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:43,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 449 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:05:43,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2024-11-20 00:05:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 9204. [2024-11-20 00:05:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9204 states, 7987 states have (on average 1.4492299987479655) internal successors, (11575), 8087 states have internal predecessors, (11575), 744 states have call successors, (744), 409 states have call predecessors, (744), 472 states have return successors, (1085), 723 states have call predecessors, (1085), 742 states have call successors, (1085) [2024-11-20 00:05:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9204 states to 9204 states and 13404 transitions. [2024-11-20 00:05:44,457 INFO L78 Accepts]: Start accepts. Automaton has 9204 states and 13404 transitions. Word has length 130 [2024-11-20 00:05:44,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:44,458 INFO L471 AbstractCegarLoop]: Abstraction has 9204 states and 13404 transitions. [2024-11-20 00:05:44,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-20 00:05:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 9204 states and 13404 transitions. [2024-11-20 00:05:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-20 00:05:44,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:44,473 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:44,554 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 00:05:44,677 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,SelfDestructingSolverStorable17 [2024-11-20 00:05:44,678 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:44,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:44,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1766063111, now seen corresponding path program 1 times [2024-11-20 00:05:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42175163] [2024-11-20 00:05:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-20 00:05:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-20 00:05:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-20 00:05:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 00:05:44,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:44,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42175163] [2024-11-20 00:05:44,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42175163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:44,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336707413] [2024-11-20 00:05:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:44,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:44,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:44,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:05:44,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 00:05:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:44,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 00:05:44,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:05:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 00:05:44,935 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:05:44,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336707413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:44,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:05:44,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-20 00:05:44,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300954040] [2024-11-20 00:05:44,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:44,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:05:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:05:44,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:44,936 INFO L87 Difference]: Start difference. First operand 9204 states and 13404 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-20 00:05:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:46,199 INFO L93 Difference]: Finished difference Result 26907 states and 39576 transitions. [2024-11-20 00:05:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:05:46,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 130 [2024-11-20 00:05:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:46,281 INFO L225 Difference]: With dead ends: 26907 [2024-11-20 00:05:46,281 INFO L226 Difference]: Without dead ends: 17717 [2024-11-20 00:05:46,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:46,418 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 195 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:46,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 674 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:05:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17717 states. [2024-11-20 00:05:47,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17717 to 17717. [2024-11-20 00:05:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17717 states, 15355 states have (on average 1.4384890915011397) internal successors, (22088), 15520 states have internal predecessors, (22088), 1417 states have call successors, (1417), 817 states have call predecessors, (1417), 944 states have return successors, (2364), 1411 states have call predecessors, (2364), 1415 states have call successors, (2364) [2024-11-20 00:05:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17717 states to 17717 states and 25869 transitions. [2024-11-20 00:05:48,036 INFO L78 Accepts]: Start accepts. Automaton has 17717 states and 25869 transitions. Word has length 130 [2024-11-20 00:05:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:48,038 INFO L471 AbstractCegarLoop]: Abstraction has 17717 states and 25869 transitions. [2024-11-20 00:05:48,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-20 00:05:48,039 INFO L276 IsEmpty]: Start isEmpty. Operand 17717 states and 25869 transitions. [2024-11-20 00:05:48,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-20 00:05:48,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:48,087 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:48,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 00:05:48,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:48,290 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:48,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash -488180587, now seen corresponding path program 1 times [2024-11-20 00:05:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763776751] [2024-11-20 00:05:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-20 00:05:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-20 00:05:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-20 00:05:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-20 00:05:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 00:05:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-20 00:05:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:48,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763776751] [2024-11-20 00:05:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763776751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467724403] [2024-11-20 00:05:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:48,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:48,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:48,590 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:05:48,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 00:05:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:48,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 00:05:48,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:05:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 00:05:48,856 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:05:48,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467724403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:48,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:05:48,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-20 00:05:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866831901] [2024-11-20 00:05:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:48,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:05:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:05:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:48,858 INFO L87 Difference]: Start difference. First operand 17717 states and 25869 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-20 00:05:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:50,916 INFO L93 Difference]: Finished difference Result 52359 states and 76998 transitions. [2024-11-20 00:05:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:05:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 169 [2024-11-20 00:05:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:51,060 INFO L225 Difference]: With dead ends: 52359 [2024-11-20 00:05:51,060 INFO L226 Difference]: Without dead ends: 34661 [2024-11-20 00:05:51,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:51,131 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 140 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:51,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 449 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:05:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34661 states. [2024-11-20 00:05:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34661 to 34385. [2024-11-20 00:05:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34385 states, 29855 states have (on average 1.4371462066655503) internal successors, (42906), 30182 states have internal predecessors, (42906), 2665 states have call successors, (2665), 1609 states have call predecessors, (2665), 1864 states have return successors, (4438), 2625 states have call predecessors, (4438), 2663 states have call successors, (4438) [2024-11-20 00:05:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34385 states to 34385 states and 50009 transitions. [2024-11-20 00:05:54,122 INFO L78 Accepts]: Start accepts. Automaton has 34385 states and 50009 transitions. Word has length 169 [2024-11-20 00:05:54,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:05:54,122 INFO L471 AbstractCegarLoop]: Abstraction has 34385 states and 50009 transitions. [2024-11-20 00:05:54,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-20 00:05:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 34385 states and 50009 transitions. [2024-11-20 00:05:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-20 00:05:54,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:05:54,185 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:05:54,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 00:05:54,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:54,387 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:05:54,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:05:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1073685065, now seen corresponding path program 1 times [2024-11-20 00:05:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:05:54,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985952458] [2024-11-20 00:05:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:05:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:05:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:05:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:05:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:05:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:05:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-20 00:05:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-20 00:05:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-20 00:05:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-20 00:05:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-20 00:05:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-20 00:05:54,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:05:54,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985952458] [2024-11-20 00:05:54,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985952458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:05:54,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559326073] [2024-11-20 00:05:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:05:54,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:05:54,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:05:54,535 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:05:54,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 00:05:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:05:54,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 00:05:54,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:05:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 00:05:54,781 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:05:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559326073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:05:54,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:05:54,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-20 00:05:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601767503] [2024-11-20 00:05:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:05:54,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:05:54,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:05:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:05:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:54,784 INFO L87 Difference]: Start difference. First operand 34385 states and 50009 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-20 00:05:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:05:59,390 INFO L93 Difference]: Finished difference Result 102061 states and 149552 transitions. [2024-11-20 00:05:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:05:59,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 169 [2024-11-20 00:05:59,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:05:59,683 INFO L225 Difference]: With dead ends: 102061 [2024-11-20 00:05:59,683 INFO L226 Difference]: Without dead ends: 67695 [2024-11-20 00:05:59,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:05:59,800 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 142 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:05:59,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 452 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:05:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2024-11-20 00:06:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 67147. [2024-11-20 00:06:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67147 states, 58293 states have (on average 1.4336541265675125) internal successors, (83572), 58944 states have internal predecessors, (83572), 5151 states have call successors, (5151), 3191 states have call predecessors, (5151), 3702 states have return successors, (8570), 5043 states have call predecessors, (8570), 5149 states have call successors, (8570) [2024-11-20 00:06:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67147 states to 67147 states and 97293 transitions. [2024-11-20 00:06:05,229 INFO L78 Accepts]: Start accepts. Automaton has 67147 states and 97293 transitions. Word has length 169 [2024-11-20 00:06:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 00:06:05,230 INFO L471 AbstractCegarLoop]: Abstraction has 67147 states and 97293 transitions. [2024-11-20 00:06:05,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-20 00:06:05,230 INFO L276 IsEmpty]: Start isEmpty. Operand 67147 states and 97293 transitions. [2024-11-20 00:06:05,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-20 00:06:05,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 00:06:05,610 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:06:05,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 00:06:05,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-20 00:06:05,811 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 00:06:05,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 00:06:05,811 INFO L85 PathProgramCache]: Analyzing trace with hash -922654534, now seen corresponding path program 1 times [2024-11-20 00:06:05,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 00:06:05,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272384209] [2024-11-20 00:06:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:05,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 00:06:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 00:06:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-20 00:06:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-20 00:06:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-20 00:06:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 00:06:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-20 00:06:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-20 00:06:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-20 00:06:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-11-20 00:06:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-20 00:06:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-11-20 00:06:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-20 00:06:05,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 00:06:05,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272384209] [2024-11-20 00:06:05,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272384209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 00:06:05,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584741398] [2024-11-20 00:06:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 00:06:05,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 00:06:05,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 00:06:05,956 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 00:06:05,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 00:06:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 00:06:06,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-20 00:06:06,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 00:06:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-20 00:06:06,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 00:06:06,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584741398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 00:06:06,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 00:06:06,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-20 00:06:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283303901] [2024-11-20 00:06:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 00:06:06,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 00:06:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 00:06:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 00:06:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:06:06,198 INFO L87 Difference]: Start difference. First operand 67147 states and 97293 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-20 00:06:11,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 00:06:11,404 INFO L93 Difference]: Finished difference Result 142619 states and 208868 transitions. [2024-11-20 00:06:11,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 00:06:11,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 188 [2024-11-20 00:06:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 00:06:11,690 INFO L225 Difference]: With dead ends: 142619 [2024-11-20 00:06:11,691 INFO L226 Difference]: Without dead ends: 75493 [2024-11-20 00:06:11,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 00:06:11,794 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 164 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 00:06:11,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 00:06:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75493 states.