./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/combinations/Problem05_label42+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 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:32:17,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:32:17,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:32:17,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:32:17,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:32:17,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:32:17,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:32:17,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:32:17,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:32:17,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:32:17,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:32:17,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:32:17,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:32:17,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:32:17,329 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:32:17,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:32:17,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:32:17,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:32:17,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:32:17,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:32:17,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:32:17,334 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:32:17,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:32:17,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:32:17,335 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:32:17,335 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:32:17,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:32:17,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:32:17,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:32:17,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:32:17,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:32:17,337 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:32:17,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:32:17,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:32:17,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:32:17,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:32:17,338 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:32:17,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:32:17,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:32:17,339 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:32:17,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:32:17,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:32:17,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 [2024-11-18 15:32:17,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:32:17,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:32:17,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:32:17,667 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:32:17,668 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:32:17,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2024-11-18 15:32:19,213 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:32:19,905 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:32:19,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2024-11-18 15:32:19,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/856c01e59/1f02f04beaa048a98a051358bc2816b5/FLAGf3c10c275 [2024-11-18 15:32:20,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/856c01e59/1f02f04beaa048a98a051358bc2816b5 [2024-11-18 15:32:20,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:32:20,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:32:20,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:32:20,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:32:20,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:32:20,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:32:20" (1/1) ... [2024-11-18 15:32:20,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d629b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:20, skipping insertion in model container [2024-11-18 15:32:20,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:32:20" (1/1) ... [2024-11-18 15:32:20,491 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:32:22,122 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2024-11-18 15:32:22,156 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2024-11-18 15:32:22,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:32:22,343 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:32:23,237 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2024-11-18 15:32:23,248 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2024-11-18 15:32:23,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:32:23,322 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:32:23,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23 WrapperNode [2024-11-18 15:32:23,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:32:23,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:32:23,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:32:23,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:32:23,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:23,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:23,946 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12699 [2024-11-18 15:32:23,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:32:23,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:32:23,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:32:23,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:32:23,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:23,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,114 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]. [2024-11-18 15:32:24,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,676 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,815 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:32:24,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:32:24,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:32:24,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:32:24,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (1/1) ... [2024-11-18 15:32:24,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:32:24,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:32:24,893 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) [2024-11-18 15:32:24,912 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 [2024-11-18 15:32:24,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:32:24,997 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:32:24,997 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:32:25,000 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:32:25,001 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:32:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:32:25,001 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:32:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 15:32:25,001 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 15:32:25,001 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:32:25,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:32:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:32:25,002 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:32:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:32:25,002 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:32:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:32:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:32:25,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:32:25,137 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:32:25,140 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:32:33,452 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2024-11-18 15:32:33,453 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:32:33,524 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:32:33,524 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-18 15:32:33,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:32:33 BoogieIcfgContainer [2024-11-18 15:32:33,525 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:32:33,527 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:32:33,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:32:33,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:32:33,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:32:20" (1/3) ... [2024-11-18 15:32:33,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351a90bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:32:33, skipping insertion in model container [2024-11-18 15:32:33,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:23" (2/3) ... [2024-11-18 15:32:33,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351a90bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:32:33, skipping insertion in model container [2024-11-18 15:32:33,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:32:33" (3/3) ... [2024-11-18 15:32:33,534 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-1.c [2024-11-18 15:32:33,553 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:32:33,554 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:32:33,696 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:32:33,703 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;@26aeb896, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:32:33,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:32:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-18 15:32:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:32:33,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:33,733 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] [2024-11-18 15:32:33,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:33,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1300199463, now seen corresponding path program 1 times [2024-11-18 15:32:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:33,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693433143] [2024-11-18 15:32:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:33,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693433143] [2024-11-18 15:32:34,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693433143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:34,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:32:34,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439018251] [2024-11-18 15:32:34,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:34,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:32:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:32:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:32:34,339 INFO L87 Difference]: Start difference. First operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:34,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:34,940 INFO L93 Difference]: Finished difference Result 4859 states and 8943 transitions. [2024-11-18 15:32:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:32:34,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 15:32:34,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:34,971 INFO L225 Difference]: With dead ends: 4859 [2024-11-18 15:32:34,971 INFO L226 Difference]: Without dead ends: 2448 [2024-11-18 15:32:34,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:34,987 INFO L432 NwaCegarLoop]: 4217 mSDtfsCounter, 4429 mSDsluCounter, 8526 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 12743 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:34,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 12743 Invalid, 310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2024-11-18 15:32:35,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2435. [2024-11-18 15:32:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2389 states have (on average 1.8271243197990792) internal successors, (4365), 2393 states have internal predecessors, (4365), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-18 15:32:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4426 transitions. [2024-11-18 15:32:35,142 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4426 transitions. Word has length 80 [2024-11-18 15:32:35,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:35,143 INFO L471 AbstractCegarLoop]: Abstraction has 2435 states and 4426 transitions. [2024-11-18 15:32:35,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:35,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4426 transitions. [2024-11-18 15:32:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:32:35,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:35,147 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] [2024-11-18 15:32:35,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:32:35,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:35,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1753327317, now seen corresponding path program 1 times [2024-11-18 15:32:35,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:35,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198332437] [2024-11-18 15:32:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:35,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:35,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198332437] [2024-11-18 15:32:35,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198332437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:35,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:35,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:35,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017656699] [2024-11-18 15:32:35,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:35,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:35,367 INFO L87 Difference]: Start difference. First operand 2435 states and 4426 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:35,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:35,980 INFO L93 Difference]: Finished difference Result 2925 states and 5165 transitions. [2024-11-18 15:32:35,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:35,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 15:32:35,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:35,996 INFO L225 Difference]: With dead ends: 2925 [2024-11-18 15:32:35,997 INFO L226 Difference]: Without dead ends: 2622 [2024-11-18 15:32:36,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:32:36,002 INFO L432 NwaCegarLoop]: 4272 mSDtfsCounter, 4353 mSDsluCounter, 12794 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 17066 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:36,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4364 Valid, 17066 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:36,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2024-11-18 15:32:36,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 2577. [2024-11-18 15:32:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2512 states have (on average 1.8105095541401275) internal successors, (4548), 2517 states have internal predecessors, (4548), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-18 15:32:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4636 transitions. [2024-11-18 15:32:36,088 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4636 transitions. Word has length 80 [2024-11-18 15:32:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:36,089 INFO L471 AbstractCegarLoop]: Abstraction has 2577 states and 4636 transitions. [2024-11-18 15:32:36,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4636 transitions. [2024-11-18 15:32:36,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:32:36,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:36,098 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] [2024-11-18 15:32:36,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:32:36,098 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:36,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash 67147479, now seen corresponding path program 1 times [2024-11-18 15:32:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672779875] [2024-11-18 15:32:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:36,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672779875] [2024-11-18 15:32:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672779875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:36,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:36,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280515683] [2024-11-18 15:32:36,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:36,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:36,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:36,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:36,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:36,306 INFO L87 Difference]: Start difference. First operand 2577 states and 4636 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:36,983 INFO L93 Difference]: Finished difference Result 3367 states and 5826 transitions. [2024-11-18 15:32:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 15:32:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:36,999 INFO L225 Difference]: With dead ends: 3367 [2024-11-18 15:32:37,000 INFO L226 Difference]: Without dead ends: 2922 [2024-11-18 15:32:37,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:32:37,005 INFO L432 NwaCegarLoop]: 4268 mSDtfsCounter, 4348 mSDsluCounter, 12782 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 17050 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:37,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 17050 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2024-11-18 15:32:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2874. [2024-11-18 15:32:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2769 states have (on average 1.7815095702419645) internal successors, (4933), 2778 states have internal predecessors, (4933), 67 states have call successors, (67), 31 states have call predecessors, (67), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-18 15:32:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5081 transitions. [2024-11-18 15:32:37,133 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5081 transitions. Word has length 80 [2024-11-18 15:32:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:37,134 INFO L471 AbstractCegarLoop]: Abstraction has 2874 states and 5081 transitions. [2024-11-18 15:32:37,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5081 transitions. [2024-11-18 15:32:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:32:37,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:37,138 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] [2024-11-18 15:32:37,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:32:37,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:37,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash 12754581, now seen corresponding path program 1 times [2024-11-18 15:32:37,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:37,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312770695] [2024-11-18 15:32:37,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:37,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:37,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:37,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312770695] [2024-11-18 15:32:37,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312770695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:37,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:37,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809073729] [2024-11-18 15:32:37,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:37,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:37,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:37,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:37,312 INFO L87 Difference]: Start difference. First operand 2874 states and 5081 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:37,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:37,941 INFO L93 Difference]: Finished difference Result 4298 states and 7245 transitions. [2024-11-18 15:32:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:37,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 15:32:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:37,966 INFO L225 Difference]: With dead ends: 4298 [2024-11-18 15:32:37,967 INFO L226 Difference]: Without dead ends: 3556 [2024-11-18 15:32:37,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:32:37,976 INFO L432 NwaCegarLoop]: 4265 mSDtfsCounter, 4343 mSDsluCounter, 12773 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4354 SdHoareTripleChecker+Valid, 17038 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:37,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4354 Valid, 17038 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2024-11-18 15:32:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3501. [2024-11-18 15:32:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3310 states have (on average 1.736858006042296) internal successors, (5749), 3333 states have internal predecessors, (5749), 115 states have call successors, (115), 55 states have call predecessors, (115), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2024-11-18 15:32:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 6041 transitions. [2024-11-18 15:32:38,171 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 6041 transitions. Word has length 80 [2024-11-18 15:32:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:38,171 INFO L471 AbstractCegarLoop]: Abstraction has 3501 states and 6041 transitions. [2024-11-18 15:32:38,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 6041 transitions. [2024-11-18 15:32:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:32:38,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:38,175 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] [2024-11-18 15:32:38,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:32:38,176 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:38,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash -404642025, now seen corresponding path program 1 times [2024-11-18 15:32:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712411] [2024-11-18 15:32:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:38,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:38,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712411] [2024-11-18 15:32:38,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:38,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:38,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:38,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275839741] [2024-11-18 15:32:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:38,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:38,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:38,318 INFO L87 Difference]: Start difference. First operand 3501 states and 6041 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:38,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:38,998 INFO L93 Difference]: Finished difference Result 6481 states and 10656 transitions. [2024-11-18 15:32:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:38,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 15:32:39,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:39,030 INFO L225 Difference]: With dead ends: 6481 [2024-11-18 15:32:39,031 INFO L226 Difference]: Without dead ends: 5112 [2024-11-18 15:32:39,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:32:39,040 INFO L432 NwaCegarLoop]: 4260 mSDtfsCounter, 4442 mSDsluCounter, 12753 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 17013 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:39,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4457 Valid, 17013 Invalid, 534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:39,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5112 states. [2024-11-18 15:32:39,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5112 to 4812. [2024-11-18 15:32:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4812 states, 4439 states have (on average 1.6825861680558685) internal successors, (7469), 4508 states have internal predecessors, (7469), 203 states have call successors, (203), 103 states have call predecessors, (203), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2024-11-18 15:32:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4812 states to 4812 states and 8129 transitions. [2024-11-18 15:32:39,304 INFO L78 Accepts]: Start accepts. Automaton has 4812 states and 8129 transitions. Word has length 80 [2024-11-18 15:32:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:39,305 INFO L471 AbstractCegarLoop]: Abstraction has 4812 states and 8129 transitions. [2024-11-18 15:32:39,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:39,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4812 states and 8129 transitions. [2024-11-18 15:32:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:32:39,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:39,310 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] [2024-11-18 15:32:39,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:32:39,310 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:39,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash 274630229, now seen corresponding path program 1 times [2024-11-18 15:32:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788822470] [2024-11-18 15:32:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:39,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:39,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788822470] [2024-11-18 15:32:39,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788822470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:39,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:39,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367588048] [2024-11-18 15:32:39,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:39,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:39,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:39,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:39,441 INFO L87 Difference]: Start difference. First operand 4812 states and 8129 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:40,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:40,338 INFO L93 Difference]: Finished difference Result 10704 states and 17674 transitions. [2024-11-18 15:32:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 15:32:40,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:40,402 INFO L225 Difference]: With dead ends: 10704 [2024-11-18 15:32:40,406 INFO L226 Difference]: Without dead ends: 8024 [2024-11-18 15:32:40,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:32:40,424 INFO L432 NwaCegarLoop]: 4256 mSDtfsCounter, 4355 mSDsluCounter, 12741 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 16997 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:40,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 16997 Invalid, 607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2024-11-18 15:32:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7439. [2024-11-18 15:32:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7439 states, 6656 states have (on average 1.6245492788461537) internal successors, (10813), 6871 states have internal predecessors, (10813), 371 states have call successors, (371), 199 states have call predecessors, (371), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2024-11-18 15:32:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7439 states to 7439 states and 12577 transitions. [2024-11-18 15:32:40,918 INFO L78 Accepts]: Start accepts. Automaton has 7439 states and 12577 transitions. Word has length 80 [2024-11-18 15:32:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:40,919 INFO L471 AbstractCegarLoop]: Abstraction has 7439 states and 12577 transitions. [2024-11-18 15:32:40,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7439 states and 12577 transitions. [2024-11-18 15:32:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:32:40,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:40,925 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] [2024-11-18 15:32:40,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:32:40,926 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:40,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2058762409, now seen corresponding path program 1 times [2024-11-18 15:32:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:40,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855853646] [2024-11-18 15:32:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:41,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:41,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855853646] [2024-11-18 15:32:41,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855853646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:41,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:41,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:41,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015121021] [2024-11-18 15:32:41,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:41,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:41,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:41,030 INFO L87 Difference]: Start difference. First operand 7439 states and 12577 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:42,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:42,010 INFO L93 Difference]: Finished difference Result 18613 states and 32164 transitions. [2024-11-18 15:32:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:42,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-11-18 15:32:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:42,106 INFO L225 Difference]: With dead ends: 18613 [2024-11-18 15:32:42,107 INFO L226 Difference]: Without dead ends: 13306 [2024-11-18 15:32:42,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:32:42,133 INFO L432 NwaCegarLoop]: 4250 mSDtfsCounter, 4339 mSDsluCounter, 12725 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4354 SdHoareTripleChecker+Valid, 16975 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:42,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4354 Valid, 16975 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:32:42,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13306 states. [2024-11-18 15:32:43,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13306 to 12967. [2024-11-18 15:32:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12967 states, 11218 states have (on average 1.567035122125156) internal successors, (17579), 11887 states have internal predecessors, (17579), 691 states have call successors, (691), 391 states have call predecessors, (691), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2024-11-18 15:32:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12967 states to 12967 states and 23055 transitions. [2024-11-18 15:32:43,151 INFO L78 Accepts]: Start accepts. Automaton has 12967 states and 23055 transitions. Word has length 80 [2024-11-18 15:32:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:43,151 INFO L471 AbstractCegarLoop]: Abstraction has 12967 states and 23055 transitions. [2024-11-18 15:32:43,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:43,153 INFO L276 IsEmpty]: Start isEmpty. Operand 12967 states and 23055 transitions. [2024-11-18 15:32:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-18 15:32:43,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:43,165 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] [2024-11-18 15:32:43,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:32:43,167 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:43,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:43,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1498062631, now seen corresponding path program 1 times [2024-11-18 15:32:43,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:43,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738673136] [2024-11-18 15:32:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:43,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:43,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:43,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738673136] [2024-11-18 15:32:43,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738673136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:43,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:43,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:32:43,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146655321] [2024-11-18 15:32:43,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:43,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:32:43,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:32:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:32:43,232 INFO L87 Difference]: Start difference. First operand 12967 states and 23055 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:44,206 INFO L93 Difference]: Finished difference Result 29581 states and 52414 transitions. [2024-11-18 15:32:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:32:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 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 [2024-11-18 15:32:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:44,321 INFO L225 Difference]: With dead ends: 29581 [2024-11-18 15:32:44,321 INFO L226 Difference]: Without dead ends: 18747 [2024-11-18 15:32:44,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:32:44,386 INFO L432 NwaCegarLoop]: 4391 mSDtfsCounter, 4358 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 8717 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:44,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 8717 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:32:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18747 states. [2024-11-18 15:32:45,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18747 to 17904. [2024-11-18 15:32:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17904 states, 15380 states have (on average 1.5298439531859558) internal successors, (23529), 16294 states have internal predecessors, (23529), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 1466 states have return successors, (6143), 1084 states have call predecessors, (6143), 1054 states have call successors, (6143) [2024-11-18 15:32:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17904 states to 17904 states and 30728 transitions. [2024-11-18 15:32:46,172 INFO L78 Accepts]: Start accepts. Automaton has 17904 states and 30728 transitions. Word has length 80 [2024-11-18 15:32:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:46,174 INFO L471 AbstractCegarLoop]: Abstraction has 17904 states and 30728 transitions. [2024-11-18 15:32:46,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 17904 states and 30728 transitions. [2024-11-18 15:32:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 15:32:46,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:46,237 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] [2024-11-18 15:32:46,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:32:46,237 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:46,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2122320658, now seen corresponding path program 1 times [2024-11-18 15:32:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:46,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822222206] [2024-11-18 15:32:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:46,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:32:46,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822222206] [2024-11-18 15:32:46,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822222206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:32:46,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773413152] [2024-11-18 15:32:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:46,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:32:46,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:32:46,323 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) [2024-11-18 15:32:46,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:32:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:46,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:32:46,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:32:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 15:32:46,556 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:32:46,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773413152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:46,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:32:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:32:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976038873] [2024-11-18 15:32:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:46,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:32:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:32:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:46,559 INFO L87 Difference]: Start difference. First operand 17904 states and 30728 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) [2024-11-18 15:32:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:48,120 INFO L93 Difference]: Finished difference Result 49099 states and 84084 transitions. [2024-11-18 15:32:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:32:48,120 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 [2024-11-18 15:32:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:48,326 INFO L225 Difference]: With dead ends: 49099 [2024-11-18 15:32:48,327 INFO L226 Difference]: Without dead ends: 33328 [2024-11-18 15:32:48,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:48,388 INFO L432 NwaCegarLoop]: 4195 mSDtfsCounter, 4151 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4151 SdHoareTripleChecker+Valid, 4408 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 [2024-11-18 15:32:48,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4151 Valid, 4408 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:32:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33328 states. [2024-11-18 15:32:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33328 to 33128. [2024-11-18 15:32:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33128 states, 28138 states have (on average 1.5033051389579928) internal successors, (42300), 29963 states have internal predecessors, (42300), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 2932 states have return successors, (12169), 2051 states have call predecessors, (12169), 2054 states have call successors, (12169) [2024-11-18 15:32:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33128 states to 33128 states and 56525 transitions. [2024-11-18 15:32:50,791 INFO L78 Accepts]: Start accepts. Automaton has 33128 states and 56525 transitions. Word has length 130 [2024-11-18 15:32:50,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:50,792 INFO L471 AbstractCegarLoop]: Abstraction has 33128 states and 56525 transitions. [2024-11-18 15:32:50,792 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) [2024-11-18 15:32:50,792 INFO L276 IsEmpty]: Start isEmpty. Operand 33128 states and 56525 transitions. [2024-11-18 15:32:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 15:32:50,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:50,866 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] [2024-11-18 15:32:50,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:32:51,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:32:51,067 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:51,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1621050866, now seen corresponding path program 1 times [2024-11-18 15:32:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:51,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353305727] [2024-11-18 15:32:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:51,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:51,145 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:32:51,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353305727] [2024-11-18 15:32:51,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353305727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:32:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933937547] [2024-11-18 15:32:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:51,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:32:51,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:32:51,147 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) [2024-11-18 15:32:51,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:32:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:51,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:32:51,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:32:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 15:32:51,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:32:51,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933937547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:51,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:32:51,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:32:51,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888019460] [2024-11-18 15:32:51,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:51,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:32:51,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:51,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:32:51,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:51,337 INFO L87 Difference]: Start difference. First operand 33128 states and 56525 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2024-11-18 15:32:54,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:54,273 INFO L93 Difference]: Finished difference Result 94425 states and 161343 transitions. [2024-11-18 15:32:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:32:54,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 [2024-11-18 15:32:54,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:54,669 INFO L225 Difference]: With dead ends: 94425 [2024-11-18 15:32:54,670 INFO L226 Difference]: Without dead ends: 63430 [2024-11-18 15:32:54,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:54,756 INFO L432 NwaCegarLoop]: 4195 mSDtfsCounter, 4145 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4408 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 [2024-11-18 15:32:54,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4145 Valid, 4408 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:32:54,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63430 states. [2024-11-18 15:32:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63430 to 63034. [2024-11-18 15:32:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63034 states, 53162 states have (on average 1.4870772356194275) internal successors, (79056), 56809 states have internal predecessors, (79056), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 5864 states have return successors, (24171), 3935 states have call predecessors, (24171), 4004 states have call successors, (24171) [2024-11-18 15:32:59,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63034 states to 63034 states and 107233 transitions. [2024-11-18 15:32:59,445 INFO L78 Accepts]: Start accepts. Automaton has 63034 states and 107233 transitions. Word has length 130 [2024-11-18 15:32:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:59,446 INFO L471 AbstractCegarLoop]: Abstraction has 63034 states and 107233 transitions. [2024-11-18 15:32:59,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2024-11-18 15:32:59,447 INFO L276 IsEmpty]: Start isEmpty. Operand 63034 states and 107233 transitions. [2024-11-18 15:32:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-18 15:32:59,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:59,587 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] [2024-11-18 15:32:59,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:32:59,788 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,SelfDestructingSolverStorable9 [2024-11-18 15:32:59,789 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:59,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash 771500242, now seen corresponding path program 1 times [2024-11-18 15:32:59,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:59,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138617179] [2024-11-18 15:32:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:59,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:32:59,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138617179] [2024-11-18 15:32:59,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138617179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:32:59,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713380959] [2024-11-18 15:32:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:59,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:32:59,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:32:59,868 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) [2024-11-18 15:32:59,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:32:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:59,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:32:59,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:33:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 15:33:00,016 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:33:00,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713380959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:00,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:33:00,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:33:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94219971] [2024-11-18 15:33:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:00,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:33:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:33:00,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:00,020 INFO L87 Difference]: Start difference. First operand 63034 states and 107233 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) [2024-11-18 15:33:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:05,309 INFO L93 Difference]: Finished difference Result 181941 states and 311905 transitions. [2024-11-18 15:33:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:33:05,309 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 [2024-11-18 15:33:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:06,227 INFO L225 Difference]: With dead ends: 181941 [2024-11-18 15:33:06,228 INFO L226 Difference]: Without dead ends: 121041 [2024-11-18 15:33:06,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:06,473 INFO L432 NwaCegarLoop]: 4401 mSDtfsCounter, 197 mSDsluCounter, 4195 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8596 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 [2024-11-18 15:33:06,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 8596 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:33:06,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121041 states. [2024-11-18 15:33:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121041 to 121041. [2024-11-18 15:33:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121041 states, 101566 states have (on average 1.4724120276470472) internal successors, (149547), 108726 states have internal predecessors, (149547), 7745 states have call successors, (7745), 4705 states have call predecessors, (7745), 11728 states have return successors, (49462), 7737 states have call predecessors, (49462), 7743 states have call successors, (49462)