./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.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_label43+token_ring.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c5568751dd37ae3ac79e02a0fd7273b3ab2af9e94f13bec2f84e6a22bfe26f6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:34:37,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:34:37,456 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:34:37,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:34:37,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:34:37,486 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:34:37,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:34:37,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:34:37,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:34:37,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:34:37,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:34:37,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:34:37,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:34:37,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:34:37,491 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:34:37,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:34:37,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:34:37,492 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:34:37,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:34:37,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:34:37,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:34:37,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:34:37,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:34:37,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:34:37,495 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:34:37,496 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:34:37,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:34:37,496 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:34:37,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:34:37,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:34:37,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:34:37,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:34:37,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:34:37,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:34:37,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:34:37,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:34:37,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:34:37,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:34:37,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:34:37,499 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:34:37,499 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:34:37,500 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:34:37,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c5568751dd37ae3ac79e02a0fd7273b3ab2af9e94f13bec2f84e6a22bfe26f6 [2024-11-18 15:34:37,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:34:37,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:34:37,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:34:37,729 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:34:37,730 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:34:37,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c [2024-11-18 15:34:38,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:34:39,432 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:34:39,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c [2024-11-18 15:34:39,474 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/111aa6824/fb2d82d39b3a4b72b91b2a373c58a3da/FLAG9d2504e13 [2024-11-18 15:34:39,534 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/111aa6824/fb2d82d39b3a4b72b91b2a373c58a3da [2024-11-18 15:34:39,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:34:39,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:34:39,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:34:39,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:34:39,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:34:39,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:34:39" (1/1) ... [2024-11-18 15:34:39,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73da2c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:39, skipping insertion in model container [2024-11-18 15:34:39,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:34:39" (1/1) ... [2024-11-18 15:34:39,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:34:41,031 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_label43+token_ring.04.cil-2.c[381679,381692] [2024-11-18 15:34:41,053 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_label43+token_ring.04.cil-2.c[383339,383352] [2024-11-18 15:34:41,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:34:41,196 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:34:41,838 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_label43+token_ring.04.cil-2.c[381679,381692] [2024-11-18 15:34:41,841 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_label43+token_ring.04.cil-2.c[383339,383352] [2024-11-18 15:34:41,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:34:41,901 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:34:41,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41 WrapperNode [2024-11-18 15:34:41,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:34:41,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:34:41,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:34:41,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:34:41,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:41,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,264 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12759 [2024-11-18 15:34:42,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:34:42,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:34:42,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:34:42,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:34:42,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,327 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,436 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 15:34:42,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:34:42,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:34:42,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:34:42,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:34:42,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (1/1) ... [2024-11-18 15:34:42,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:34:42,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:34:42,803 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 15:34:42,812 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 15:34:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:34:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:34:42,871 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:34:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:34:42,873 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:34:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:34:42,873 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:34:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 15:34:42,874 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 15:34:42,874 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:34:42,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:34:42,874 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:34:42,874 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:34:42,874 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:34:42,875 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:34:42,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:34:42,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:34:42,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:34:43,017 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:34:43,019 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:34:48,734 INFO L? ?]: Removed 1711 outVars from TransFormulas that were not future-live. [2024-11-18 15:34:48,734 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:34:48,790 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:34:48,791 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-18 15:34:48,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:34:48 BoogieIcfgContainer [2024-11-18 15:34:48,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:34:48,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:34:48,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:34:48,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:34:48,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:34:39" (1/3) ... [2024-11-18 15:34:48,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a32c8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:34:48, skipping insertion in model container [2024-11-18 15:34:48,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:34:41" (2/3) ... [2024-11-18 15:34:48,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a32c8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:34:48, skipping insertion in model container [2024-11-18 15:34:48,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:34:48" (3/3) ... [2024-11-18 15:34:48,800 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.04.cil-2.c [2024-11-18 15:34:48,813 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:34:48,813 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:34:48,902 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:34:48,907 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;@2834f5d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:34:48,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:34:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 2378 states, 2348 states have (on average 1.852640545144804) internal successors, (4350), 2353 states have internal predecessors, (4350), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:34:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:48,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:48,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:48,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:48,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:48,935 INFO L85 PathProgramCache]: Analyzing trace with hash 482633735, now seen corresponding path program 1 times [2024-11-18 15:34:48,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:48,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248475243] [2024-11-18 15:34:48,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:48,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:49,225 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 15:34:49,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:49,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248475243] [2024-11-18 15:34:49,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248475243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:49,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:49,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:34:49,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949821183] [2024-11-18 15:34:49,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:49,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:34:49,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:34:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:34:49,258 INFO L87 Difference]: Start difference. First operand has 2378 states, 2348 states have (on average 1.852640545144804) internal successors, (4350), 2353 states have internal predecessors, (4350), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:34:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:49,392 INFO L93 Difference]: Finished difference Result 4749 states and 8769 transitions. [2024-11-18 15:34:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:34:49,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2024-11-18 15:34:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:49,420 INFO L225 Difference]: With dead ends: 4749 [2024-11-18 15:34:49,420 INFO L226 Difference]: Without dead ends: 2310 [2024-11-18 15:34:49,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:34:49,429 INFO L432 NwaCegarLoop]: 4309 mSDtfsCounter, 282 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 8331 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:49,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 8331 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:34:49,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2024-11-18 15:34:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2310. [2024-11-18 15:34:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2310 states, 2282 states have (on average 1.8418054338299736) internal successors, (4203), 2285 states have internal predecessors, (4203), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-18 15:34:49,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 4241 transitions. [2024-11-18 15:34:49,538 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 4241 transitions. Word has length 91 [2024-11-18 15:34:49,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:49,539 INFO L471 AbstractCegarLoop]: Abstraction has 2310 states and 4241 transitions. [2024-11-18 15:34:49,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:34:49,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 4241 transitions. [2024-11-18 15:34:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:49,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:49,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:49,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:34:49,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:49,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:49,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1084124215, now seen corresponding path program 1 times [2024-11-18 15:34:49,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:49,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117116903] [2024-11-18 15:34:49,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:49,804 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 15:34:49,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117116903] [2024-11-18 15:34:49,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117116903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:49,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:49,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:34:49,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518221937] [2024-11-18 15:34:49,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:49,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:34:49,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:34:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:34:49,812 INFO L87 Difference]: Start difference. First operand 2310 states and 4241 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 15:34:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:50,185 INFO L93 Difference]: Finished difference Result 2680 states and 4805 transitions. [2024-11-18 15:34:50,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:34:50,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2024-11-18 15:34:50,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:50,196 INFO L225 Difference]: With dead ends: 2680 [2024-11-18 15:34:50,197 INFO L226 Difference]: Without dead ends: 2503 [2024-11-18 15:34:50,198 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 15:34:50,199 INFO L432 NwaCegarLoop]: 4179 mSDtfsCounter, 4447 mSDsluCounter, 8466 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 12645 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:50,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4459 Valid, 12645 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:34:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2024-11-18 15:34:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2488. [2024-11-18 15:34:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2440 states have (on average 1.8221311475409836) internal successors, (4446), 2444 states have internal predecessors, (4446), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2024-11-18 15:34:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 4511 transitions. [2024-11-18 15:34:50,259 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 4511 transitions. Word has length 91 [2024-11-18 15:34:50,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:50,259 INFO L471 AbstractCegarLoop]: Abstraction has 2488 states and 4511 transitions. [2024-11-18 15:34:50,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 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 15:34:50,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 4511 transitions. [2024-11-18 15:34:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:50,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:50,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:50,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:34:50,263 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:50,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:50,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1156138437, now seen corresponding path program 1 times [2024-11-18 15:34:50,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:50,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253008171] [2024-11-18 15:34:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:50,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:50,391 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 15:34:50,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253008171] [2024-11-18 15:34:50,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253008171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:50,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:50,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:50,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671448102] [2024-11-18 15:34:50,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:50,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:50,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:50,394 INFO L87 Difference]: Start difference. First operand 2488 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:50,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:50,813 INFO L93 Difference]: Finished difference Result 3065 states and 5394 transitions. [2024-11-18 15:34:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:34:50,814 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 15:34:50,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:50,823 INFO L225 Difference]: With dead ends: 3065 [2024-11-18 15:34:50,823 INFO L226 Difference]: Without dead ends: 2710 [2024-11-18 15:34:50,825 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 15:34:50,826 INFO L432 NwaCegarLoop]: 4328 mSDtfsCounter, 4440 mSDsluCounter, 12972 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4452 SdHoareTripleChecker+Valid, 17300 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:50,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4452 Valid, 17300 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:34:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2024-11-18 15:34:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2655. [2024-11-18 15:34:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2655 states, 2587 states have (on average 1.8040201005025125) internal successors, (4667), 2592 states have internal predecessors, (4667), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2024-11-18 15:34:50,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 4761 transitions. [2024-11-18 15:34:50,895 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 4761 transitions. Word has length 91 [2024-11-18 15:34:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:50,896 INFO L471 AbstractCegarLoop]: Abstraction has 2655 states and 4761 transitions. [2024-11-18 15:34:50,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:50,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 4761 transitions. [2024-11-18 15:34:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:50,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:50,901 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:50,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:34:50,901 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:50,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1404724409, now seen corresponding path program 1 times [2024-11-18 15:34:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:50,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623707038] [2024-11-18 15:34:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:50,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:51,016 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 15:34:51,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623707038] [2024-11-18 15:34:51,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623707038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:51,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:51,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:51,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459280455] [2024-11-18 15:34:51,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:51,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:51,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:51,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:51,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:51,020 INFO L87 Difference]: Start difference. First operand 2655 states and 4761 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:51,406 INFO L93 Difference]: Finished difference Result 3588 states and 6187 transitions. [2024-11-18 15:34:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:34:51,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 15:34:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:51,419 INFO L225 Difference]: With dead ends: 3588 [2024-11-18 15:34:51,419 INFO L226 Difference]: Without dead ends: 3066 [2024-11-18 15:34:51,422 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 15:34:51,424 INFO L432 NwaCegarLoop]: 4189 mSDtfsCounter, 4452 mSDsluCounter, 12646 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 16835 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:51,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 16835 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:34:51,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2024-11-18 15:34:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 3006. [2024-11-18 15:34:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2896 states have (on average 1.7734806629834254) internal successors, (5136), 2905 states have internal predecessors, (5136), 72 states have call successors, (72), 31 states have call predecessors, (72), 36 states have return successors, (86), 73 states have call predecessors, (86), 70 states have call successors, (86) [2024-11-18 15:34:51,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 5294 transitions. [2024-11-18 15:34:51,502 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 5294 transitions. Word has length 91 [2024-11-18 15:34:51,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:51,502 INFO L471 AbstractCegarLoop]: Abstraction has 3006 states and 5294 transitions. [2024-11-18 15:34:51,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:51,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 5294 transitions. [2024-11-18 15:34:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:51,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:51,504 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:34:51,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:34:51,505 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:51,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:51,505 INFO L85 PathProgramCache]: Analyzing trace with hash -517501563, now seen corresponding path program 1 times [2024-11-18 15:34:51,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:51,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703438157] [2024-11-18 15:34:51,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:51,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:51,611 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 15:34:51,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:51,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703438157] [2024-11-18 15:34:51,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703438157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:51,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:51,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:51,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562775464] [2024-11-18 15:34:51,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:51,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:51,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:51,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:51,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:51,613 INFO L87 Difference]: Start difference. First operand 3006 states and 5294 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:52,169 INFO L93 Difference]: Finished difference Result 4697 states and 7902 transitions. [2024-11-18 15:34:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:34:52,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 15:34:52,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:52,186 INFO L225 Difference]: With dead ends: 4697 [2024-11-18 15:34:52,187 INFO L226 Difference]: Without dead ends: 3824 [2024-11-18 15:34:52,190 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 15:34:52,191 INFO L432 NwaCegarLoop]: 4321 mSDtfsCounter, 4430 mSDsluCounter, 12951 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4442 SdHoareTripleChecker+Valid, 17272 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:52,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4442 Valid, 17272 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:34:52,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2024-11-18 15:34:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 3753. [2024-11-18 15:34:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3553 states have (on average 1.7292428933295807) internal successors, (6144), 3576 states have internal predecessors, (6144), 124 states have call successors, (124), 55 states have call predecessors, (124), 74 states have return successors, (186), 129 states have call predecessors, (186), 122 states have call successors, (186) [2024-11-18 15:34:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 6454 transitions. [2024-11-18 15:34:52,337 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 6454 transitions. Word has length 91 [2024-11-18 15:34:52,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:52,338 INFO L471 AbstractCegarLoop]: Abstraction has 3753 states and 6454 transitions. [2024-11-18 15:34:52,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 6454 transitions. [2024-11-18 15:34:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:52,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:52,341 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:52,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:34:52,342 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:52,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:52,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1866423175, now seen corresponding path program 1 times [2024-11-18 15:34:52,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:52,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507880850] [2024-11-18 15:34:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:52,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:52,468 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 15:34:52,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507880850] [2024-11-18 15:34:52,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507880850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:52,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:52,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:52,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618402179] [2024-11-18 15:34:52,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:52,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:52,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:52,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:52,475 INFO L87 Difference]: Start difference. First operand 3753 states and 6454 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:53,061 INFO L93 Difference]: Finished difference Result 7302 states and 12013 transitions. [2024-11-18 15:34:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:34:53,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 15:34:53,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:53,084 INFO L225 Difference]: With dead ends: 7302 [2024-11-18 15:34:53,085 INFO L226 Difference]: Without dead ends: 5682 [2024-11-18 15:34:53,090 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 15:34:53,092 INFO L432 NwaCegarLoop]: 4312 mSDtfsCounter, 4556 mSDsluCounter, 12921 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4573 SdHoareTripleChecker+Valid, 17233 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:53,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4573 Valid, 17233 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:34:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2024-11-18 15:34:53,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 5313. [2024-11-18 15:34:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5313 states, 4923 states have (on average 1.6790574852732074) internal successors, (8266), 4992 states have internal predecessors, (8266), 220 states have call successors, (220), 103 states have call predecessors, (220), 168 states have return successors, (474), 233 states have call predecessors, (474), 218 states have call successors, (474) [2024-11-18 15:34:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5313 states to 5313 states and 8960 transitions. [2024-11-18 15:34:53,332 INFO L78 Accepts]: Start accepts. Automaton has 5313 states and 8960 transitions. Word has length 91 [2024-11-18 15:34:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:53,332 INFO L471 AbstractCegarLoop]: Abstraction has 5313 states and 8960 transitions. [2024-11-18 15:34:53,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 5313 states and 8960 transitions. [2024-11-18 15:34:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:53,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:53,336 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:53,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:34:53,337 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:53,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:53,337 INFO L85 PathProgramCache]: Analyzing trace with hash 899072521, now seen corresponding path program 1 times [2024-11-18 15:34:53,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:53,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255118580] [2024-11-18 15:34:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:53,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:34:53,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255118580] [2024-11-18 15:34:53,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255118580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:53,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:53,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:53,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106227055] [2024-11-18 15:34:53,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:53,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:53,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:53,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:53,459 INFO L87 Difference]: Start difference. First operand 5313 states and 8960 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:54,230 INFO L93 Difference]: Finished difference Result 12390 states and 20497 transitions. [2024-11-18 15:34:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:34:54,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 15:34:54,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:54,280 INFO L225 Difference]: With dead ends: 12390 [2024-11-18 15:34:54,280 INFO L226 Difference]: Without dead ends: 9210 [2024-11-18 15:34:54,294 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 15:34:54,295 INFO L432 NwaCegarLoop]: 4308 mSDtfsCounter, 4449 mSDsluCounter, 12909 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 17217 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:54,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4460 Valid, 17217 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:34:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9210 states. [2024-11-18 15:34:54,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9210 to 8492. [2024-11-18 15:34:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8492 states, 7676 states have (on average 1.6313183949973944) internal successors, (12522), 7891 states have internal predecessors, (12522), 404 states have call successors, (404), 199 states have call predecessors, (404), 410 states have return successors, (1426), 433 states have call predecessors, (1426), 402 states have call successors, (1426) [2024-11-18 15:34:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8492 states to 8492 states and 14352 transitions. [2024-11-18 15:34:54,585 INFO L78 Accepts]: Start accepts. Automaton has 8492 states and 14352 transitions. Word has length 91 [2024-11-18 15:34:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:54,586 INFO L471 AbstractCegarLoop]: Abstraction has 8492 states and 14352 transitions. [2024-11-18 15:34:54,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 8492 states and 14352 transitions. [2024-11-18 15:34:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:54,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:54,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:54,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:34:54,591 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:54,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1487436985, now seen corresponding path program 1 times [2024-11-18 15:34:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384256431] [2024-11-18 15:34:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:54,673 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 15:34:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:54,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384256431] [2024-11-18 15:34:54,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384256431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:54,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:54,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:54,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322302468] [2024-11-18 15:34:54,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:54,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:54,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:54,676 INFO L87 Difference]: Start difference. First operand 8492 states and 14352 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:55,394 INFO L93 Difference]: Finished difference Result 22747 states and 39227 transitions. [2024-11-18 15:34:55,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:34:55,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 15:34:55,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:55,548 INFO L225 Difference]: With dead ends: 22747 [2024-11-18 15:34:55,548 INFO L226 Difference]: Without dead ends: 16388 [2024-11-18 15:34:55,564 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 15:34:55,565 INFO L432 NwaCegarLoop]: 4306 mSDtfsCounter, 4486 mSDsluCounter, 12903 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4503 SdHoareTripleChecker+Valid, 17209 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:55,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4503 Valid, 17209 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:34:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16388 states. [2024-11-18 15:34:56,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16388 to 15529. [2024-11-18 15:34:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15529 states, 13715 states have (on average 1.5983959168793291) internal successors, (21922), 14384 states have internal predecessors, (21922), 756 states have call successors, (756), 391 states have call predecessors, (756), 1056 states have return successors, (4850), 817 states have call predecessors, (4850), 754 states have call successors, (4850) [2024-11-18 15:34:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15529 states to 15529 states and 27528 transitions. [2024-11-18 15:34:56,113 INFO L78 Accepts]: Start accepts. Automaton has 15529 states and 27528 transitions. Word has length 91 [2024-11-18 15:34:56,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:56,113 INFO L471 AbstractCegarLoop]: Abstraction has 15529 states and 27528 transitions. [2024-11-18 15:34:56,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand 15529 states and 27528 transitions. [2024-11-18 15:34:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:56,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:56,121 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:56,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:34:56,122 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:56,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:56,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1980063159, now seen corresponding path program 1 times [2024-11-18 15:34:56,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:56,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29978999] [2024-11-18 15:34:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:56,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:56,216 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 15:34:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29978999] [2024-11-18 15:34:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29978999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:56,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:56,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400618517] [2024-11-18 15:34:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:56,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:56,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:56,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:56,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:56,218 INFO L87 Difference]: Start difference. First operand 15529 states and 27528 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:34:57,441 INFO L93 Difference]: Finished difference Result 45294 states and 86185 transitions. [2024-11-18 15:34:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:34:57,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 15:34:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:34:57,719 INFO L225 Difference]: With dead ends: 45294 [2024-11-18 15:34:57,719 INFO L226 Difference]: Without dead ends: 31898 [2024-11-18 15:34:57,770 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 15:34:57,771 INFO L432 NwaCegarLoop]: 4303 mSDtfsCounter, 4451 mSDsluCounter, 12894 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4468 SdHoareTripleChecker+Valid, 17197 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:34:57,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4468 Valid, 17197 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:34:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31898 states. [2024-11-18 15:34:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31898 to 30722. [2024-11-18 15:34:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30722 states, 26458 states have (on average 1.5722276816085872) internal successors, (41598), 28521 states have internal predecessors, (41598), 1428 states have call successors, (1428), 775 states have call predecessors, (1428), 2834 states have return successors, (17810), 1553 states have call predecessors, (17810), 1426 states have call successors, (17810) [2024-11-18 15:34:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30722 states to 30722 states and 60836 transitions. [2024-11-18 15:34:59,755 INFO L78 Accepts]: Start accepts. Automaton has 30722 states and 60836 transitions. Word has length 91 [2024-11-18 15:34:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:59,755 INFO L471 AbstractCegarLoop]: Abstraction has 30722 states and 60836 transitions. [2024-11-18 15:34:59,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:34:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 30722 states and 60836 transitions. [2024-11-18 15:34:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:34:59,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:59,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:34:59,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:34:59,772 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:59,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:59,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1026123001, now seen corresponding path program 1 times [2024-11-18 15:34:59,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:59,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551274318] [2024-11-18 15:34:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:59,859 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 15:34:59,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:59,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551274318] [2024-11-18 15:34:59,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551274318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:59,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:59,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63368415] [2024-11-18 15:34:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:59,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:59,861 INFO L87 Difference]: Start difference. First operand 30722 states and 60836 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:35:03,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:03,068 INFO L93 Difference]: Finished difference Result 92953 states and 210479 transitions. [2024-11-18 15:35:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:03,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2024-11-18 15:35:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:03,435 INFO L225 Difference]: With dead ends: 92953 [2024-11-18 15:35:03,436 INFO L226 Difference]: Without dead ends: 64364 [2024-11-18 15:35:03,524 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 15:35:03,525 INFO L432 NwaCegarLoop]: 4298 mSDtfsCounter, 4405 mSDsluCounter, 12887 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4416 SdHoareTripleChecker+Valid, 17185 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:03,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4416 Valid, 17185 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:35:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64364 states. [2024-11-18 15:35:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64364 to 63079. [2024-11-18 15:35:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63079 states, 52537 states have (on average 1.5370120105830176) internal successors, (80750), 58846 states have internal predecessors, (80750), 2700 states have call successors, (2700), 1535 states have call predecessors, (2700), 7840 states have return successors, (68234), 2953 states have call predecessors, (68234), 2698 states have call successors, (68234) [2024-11-18 15:35:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63079 states to 63079 states and 151684 transitions. [2024-11-18 15:35:08,532 INFO L78 Accepts]: Start accepts. Automaton has 63079 states and 151684 transitions. Word has length 91 [2024-11-18 15:35:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:08,534 INFO L471 AbstractCegarLoop]: Abstraction has 63079 states and 151684 transitions. [2024-11-18 15:35:08,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 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 15:35:08,534 INFO L276 IsEmpty]: Start isEmpty. Operand 63079 states and 151684 transitions. [2024-11-18 15:35:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 15:35:08,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:08,561 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:08,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:35:08,562 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:08,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:08,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2052690569, now seen corresponding path program 1 times [2024-11-18 15:35:08,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:08,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446976151] [2024-11-18 15:35:08,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:08,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:08,622 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 15:35:08,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446976151] [2024-11-18 15:35:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446976151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:08,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:08,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:35:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326661145] [2024-11-18 15:35:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:08,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:35:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:35:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:35:08,625 INFO L87 Difference]: Start difference. First operand 63079 states and 151684 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 15:35:13,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:13,907 INFO L93 Difference]: Finished difference Result 157871 states and 378269 transitions. [2024-11-18 15:35:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:35:13,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2024-11-18 15:35:13,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:14,480 INFO L225 Difference]: With dead ends: 157871 [2024-11-18 15:35:14,480 INFO L226 Difference]: Without dead ends: 96926 [2024-11-18 15:35:14,648 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 15:35:14,648 INFO L432 NwaCegarLoop]: 4472 mSDtfsCounter, 4432 mSDsluCounter, 4403 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4432 SdHoareTripleChecker+Valid, 8875 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:14,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4432 Valid, 8875 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:35:14,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96926 states.