./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.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_label41+token_ring.06.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 b643fcd36e1cc4587225d57a08c62d9a71f0676d69600864fd61c6c0403013f3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:31:20,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:31:20,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:31:20,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:31:20,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:31:20,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:31:20,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:31:20,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:31:20,403 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:31:20,403 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:31:20,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:31:20,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:31:20,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:31:20,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:31:20,405 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:31:20,406 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:31:20,406 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:31:20,407 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:31:20,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:31:20,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:31:20,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:31:20,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:31:20,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:31:20,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:31:20,410 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:31:20,411 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:31:20,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:31:20,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:31:20,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:31:20,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:31:20,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:31:20,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:31:20,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:31:20,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:31:20,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:31:20,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:31:20,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:31:20,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:31:20,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:31:20,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:31:20,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:31:20,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:31:20,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b643fcd36e1cc4587225d57a08c62d9a71f0676d69600864fd61c6c0403013f3 [2024-11-18 15:31:20,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:31:20,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:31:20,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:31:20,704 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:31:20,704 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:31:20,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c [2024-11-18 15:31:22,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:31:22,821 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:31:22,821 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c [2024-11-18 15:31:22,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26156fa3d/3f96ebf9aaad45799011dea1a8e116e2/FLAG8ea3220c1 [2024-11-18 15:31:22,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26156fa3d/3f96ebf9aaad45799011dea1a8e116e2 [2024-11-18 15:31:22,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:31:22,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:31:22,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:31:22,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:31:22,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:31:22,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:31:22" (1/1) ... [2024-11-18 15:31:22,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185bf786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:22, skipping insertion in model container [2024-11-18 15:31:22,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:31:22" (1/1) ... [2024-11-18 15:31:23,078 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:31:24,771 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_label41+token_ring.06.cil-2.c[376251,376264] [2024-11-18 15:31:24,851 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_label41+token_ring.06.cil-2.c[383339,383352] [2024-11-18 15:31:25,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:31:25,048 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:31:25,835 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_label41+token_ring.06.cil-2.c[376251,376264] [2024-11-18 15:31:25,845 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_label41+token_ring.06.cil-2.c[383339,383352] [2024-11-18 15:31:25,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:31:25,961 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:31:25,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25 WrapperNode [2024-11-18 15:31:25,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:31:25,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:31:25,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:31:25,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:31:25,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:26,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:26,480 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12873 [2024-11-18 15:31:26,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:31:26,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:31:26,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:31:26,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:31:26,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:26,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:26,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:26,664 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 15:31:26,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:26,664 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:26,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:27,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:27,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:27,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:27,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:31:27,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:31:27,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:31:27,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:31:27,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (1/1) ... [2024-11-18 15:31:27,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:31:27,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:31:27,214 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 15:31:27,218 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 15:31:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:31:27,269 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:31:27,270 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:31:27,270 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:31:27,271 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:31:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:31:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:31:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:31:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:31:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:31:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:31:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:31:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:31:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:31:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:31:27,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:31:27,378 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:31:27,380 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:31:35,167 INFO L? ?]: Removed 1719 outVars from TransFormulas that were not future-live. [2024-11-18 15:31:35,168 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:31:35,241 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:31:35,241 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-18 15:31:35,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:31:35 BoogieIcfgContainer [2024-11-18 15:31:35,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:31:35,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:31:35,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:31:35,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:31:35,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:31:22" (1/3) ... [2024-11-18 15:31:35,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7453a4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:31:35, skipping insertion in model container [2024-11-18 15:31:35,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:31:25" (2/3) ... [2024-11-18 15:31:35,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7453a4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:31:35, skipping insertion in model container [2024-11-18 15:31:35,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:31:35" (3/3) ... [2024-11-18 15:31:35,251 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.06.cil-2.c [2024-11-18 15:31:35,269 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:31:35,270 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:31:35,402 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:31:35,411 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;@386f275c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:31:35,411 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:31:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:31:35,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:35,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:35,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:35,444 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:35,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:35,449 INFO L85 PathProgramCache]: Analyzing trace with hash -603322071, now seen corresponding path program 1 times [2024-11-18 15:31:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:35,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893883020] [2024-11-18 15:31:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:35,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:35,869 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 15:31:35,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:35,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893883020] [2024-11-18 15:31:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893883020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:35,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:31:35,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6396125] [2024-11-18 15:31:35,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:35,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:31:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:35,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:31:35,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:31:35,915 INFO L87 Difference]: Start difference. First operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:36,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:36,126 INFO L93 Difference]: Finished difference Result 4834 states and 8909 transitions. [2024-11-18 15:31:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:31:36,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:36,162 INFO L225 Difference]: With dead ends: 4834 [2024-11-18 15:31:36,162 INFO L226 Difference]: Without dead ends: 2355 [2024-11-18 15:31:36,171 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 15:31:36,175 INFO L432 NwaCegarLoop]: 4381 mSDtfsCounter, 350 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 8403 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 15:31:36,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 8403 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:31:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2024-11-18 15:31:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2024-11-18 15:31:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2327 states have (on average 1.8362698753760207) internal successors, (4273), 2329 states have internal predecessors, (4273), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:31:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4313 transitions. [2024-11-18 15:31:36,375 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4313 transitions. Word has length 112 [2024-11-18 15:31:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:36,377 INFO L471 AbstractCegarLoop]: Abstraction has 2355 states and 4313 transitions. [2024-11-18 15:31:36,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:36,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4313 transitions. [2024-11-18 15:31:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:36,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:36,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:36,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:31:36,386 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:36,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1634362969, now seen corresponding path program 1 times [2024-11-18 15:31:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629291468] [2024-11-18 15:31:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:36,776 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 15:31:36,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:36,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629291468] [2024-11-18 15:31:36,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629291468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:36,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:36,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:36,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504607646] [2024-11-18 15:31:36,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:36,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:36,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:36,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:36,783 INFO L87 Difference]: Start difference. First operand 2355 states and 4313 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:37,688 INFO L93 Difference]: Finished difference Result 2835 states and 5064 transitions. [2024-11-18 15:31:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:37,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:37,707 INFO L225 Difference]: With dead ends: 2835 [2024-11-18 15:31:37,708 INFO L226 Difference]: Without dead ends: 2615 [2024-11-18 15:31:37,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:31:37,713 INFO L432 NwaCegarLoop]: 4424 mSDtfsCounter, 4603 mSDsluCounter, 13357 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 17781 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:37,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 17781 Invalid, 734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:31:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-11-18 15:31:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2585. [2024-11-18 15:31:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2532 states have (on average 1.8131911532385465) internal successors, (4591), 2536 states have internal predecessors, (4591), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-18 15:31:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4672 transitions. [2024-11-18 15:31:37,819 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4672 transitions. Word has length 112 [2024-11-18 15:31:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:37,821 INFO L471 AbstractCegarLoop]: Abstraction has 2585 states and 4672 transitions. [2024-11-18 15:31:37,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4672 transitions. [2024-11-18 15:31:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:37,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:37,828 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:37,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:31:37,829 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:37,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:37,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1041629413, now seen corresponding path program 1 times [2024-11-18 15:31:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:37,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383736418] [2024-11-18 15:31:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:37,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:38,016 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 15:31:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383736418] [2024-11-18 15:31:38,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383736418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:38,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:38,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:38,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046102165] [2024-11-18 15:31:38,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:38,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:38,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:38,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:38,022 INFO L87 Difference]: Start difference. First operand 2585 states and 4672 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:38,698 INFO L93 Difference]: Finished difference Result 3524 states and 6140 transitions. [2024-11-18 15:31:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:38,715 INFO L225 Difference]: With dead ends: 3524 [2024-11-18 15:31:38,716 INFO L226 Difference]: Without dead ends: 3076 [2024-11-18 15:31:38,720 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 15:31:38,721 INFO L432 NwaCegarLoop]: 4364 mSDtfsCounter, 4599 mSDsluCounter, 13206 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 17570 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:38,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 17570 Invalid, 693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:31:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2024-11-18 15:31:38,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3035. [2024-11-18 15:31:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2936 states have (on average 1.7758855585831064) internal successors, (5214), 2944 states have internal predecessors, (5214), 67 states have call successors, (67), 24 states have call predecessors, (67), 30 states have return successors, (90), 70 states have call predecessors, (90), 67 states have call successors, (90) [2024-11-18 15:31:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 5371 transitions. [2024-11-18 15:31:38,908 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 5371 transitions. Word has length 112 [2024-11-18 15:31:38,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:38,909 INFO L471 AbstractCegarLoop]: Abstraction has 3035 states and 5371 transitions. [2024-11-18 15:31:38,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 5371 transitions. [2024-11-18 15:31:38,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:38,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:38,912 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:38,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:31:38,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:38,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:38,914 INFO L85 PathProgramCache]: Analyzing trace with hash 158120423, now seen corresponding path program 1 times [2024-11-18 15:31:38,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:38,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103207607] [2024-11-18 15:31:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:38,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:39,064 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 15:31:39,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:39,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103207607] [2024-11-18 15:31:39,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103207607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:39,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:39,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:39,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291901800] [2024-11-18 15:31:39,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:39,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:39,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:39,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:39,068 INFO L87 Difference]: Start difference. First operand 3035 states and 5371 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:39,725 INFO L93 Difference]: Finished difference Result 4963 states and 8421 transitions. [2024-11-18 15:31:39,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:39,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:39,747 INFO L225 Difference]: With dead ends: 4963 [2024-11-18 15:31:39,747 INFO L226 Difference]: Without dead ends: 4065 [2024-11-18 15:31:39,753 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 15:31:39,754 INFO L432 NwaCegarLoop]: 4416 mSDtfsCounter, 4593 mSDsluCounter, 13321 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 17737 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:39,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 17737 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:31:39,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2024-11-18 15:31:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4003. [2024-11-18 15:31:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3806 states have (on average 1.7277982133473464) internal successors, (6576), 3828 states have internal predecessors, (6576), 127 states have call successors, (127), 48 states have call predecessors, (127), 68 states have return successors, (206), 134 states have call predecessors, (206), 127 states have call successors, (206) [2024-11-18 15:31:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 6909 transitions. [2024-11-18 15:31:39,926 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 6909 transitions. Word has length 112 [2024-11-18 15:31:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:39,927 INFO L471 AbstractCegarLoop]: Abstraction has 4003 states and 6909 transitions. [2024-11-18 15:31:39,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 6909 transitions. [2024-11-18 15:31:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:39,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:39,930 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:39,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:31:39,931 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:39,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash 129620133, now seen corresponding path program 1 times [2024-11-18 15:31:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:39,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822141238] [2024-11-18 15:31:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:39,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:40,066 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 15:31:40,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822141238] [2024-11-18 15:31:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822141238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:40,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:40,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:40,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987087649] [2024-11-18 15:31:40,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:40,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:40,070 INFO L87 Difference]: Start difference. First operand 4003 states and 6909 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:40,779 INFO L93 Difference]: Finished difference Result 8094 states and 13531 transitions. [2024-11-18 15:31:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:40,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:40,813 INFO L225 Difference]: With dead ends: 8094 [2024-11-18 15:31:40,813 INFO L226 Difference]: Without dead ends: 6228 [2024-11-18 15:31:40,824 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 15:31:40,825 INFO L432 NwaCegarLoop]: 4415 mSDtfsCounter, 4588 mSDsluCounter, 13313 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 17728 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:40,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4602 Valid, 17728 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:31:40,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2024-11-18 15:31:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 6127. [2024-11-18 15:31:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6127 states, 5716 states have (on average 1.6826452064380686) internal successors, (9618), 5784 states have internal predecessors, (9618), 247 states have call successors, (247), 96 states have call predecessors, (247), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-11-18 15:31:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 10399 transitions. [2024-11-18 15:31:41,089 INFO L78 Accepts]: Start accepts. Automaton has 6127 states and 10399 transitions. Word has length 112 [2024-11-18 15:31:41,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:41,090 INFO L471 AbstractCegarLoop]: Abstraction has 6127 states and 10399 transitions. [2024-11-18 15:31:41,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6127 states and 10399 transitions. [2024-11-18 15:31:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:41,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:41,096 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:41,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:31:41,097 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:41,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:41,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1810961881, now seen corresponding path program 1 times [2024-11-18 15:31:41,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:41,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513017944] [2024-11-18 15:31:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:41,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:31:41,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:41,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513017944] [2024-11-18 15:31:41,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513017944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:41,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:41,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:41,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606681049] [2024-11-18 15:31:41,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:41,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:41,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:41,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:41,358 INFO L87 Difference]: Start difference. First operand 6127 states and 10399 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:42,210 INFO L93 Difference]: Finished difference Result 15049 states and 25389 transitions. [2024-11-18 15:31:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:42,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:42,277 INFO L225 Difference]: With dead ends: 15049 [2024-11-18 15:31:42,277 INFO L226 Difference]: Without dead ends: 11059 [2024-11-18 15:31:42,301 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 15:31:42,303 INFO L432 NwaCegarLoop]: 4412 mSDtfsCounter, 4583 mSDsluCounter, 13297 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4597 SdHoareTripleChecker+Valid, 17709 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:42,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4597 Valid, 17709 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:31:42,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2024-11-18 15:31:42,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 10887. [2024-11-18 15:31:42,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10887 states, 9994 states have (on average 1.6565939563738243) internal successors, (16556), 10208 states have internal predecessors, (16556), 487 states have call successors, (487), 192 states have call predecessors, (487), 404 states have return successors, (1574), 518 states have call predecessors, (1574), 487 states have call successors, (1574) [2024-11-18 15:31:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10887 states to 10887 states and 18617 transitions. [2024-11-18 15:31:42,816 INFO L78 Accepts]: Start accepts. Automaton has 10887 states and 18617 transitions. Word has length 112 [2024-11-18 15:31:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:42,817 INFO L471 AbstractCegarLoop]: Abstraction has 10887 states and 18617 transitions. [2024-11-18 15:31:42,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 10887 states and 18617 transitions. [2024-11-18 15:31:42,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:42,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:42,828 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:42,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:31:42,828 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:42,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash 66101349, now seen corresponding path program 1 times [2024-11-18 15:31:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:42,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718830075] [2024-11-18 15:31:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:42,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:42,983 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 15:31:42,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718830075] [2024-11-18 15:31:42,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718830075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:42,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:42,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:42,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067340274] [2024-11-18 15:31:42,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:42,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:42,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:42,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:42,986 INFO L87 Difference]: Start difference. First operand 10887 states and 18617 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:44,184 INFO L93 Difference]: Finished difference Result 30832 states and 54099 transitions. [2024-11-18 15:31:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:44,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:44,318 INFO L225 Difference]: With dead ends: 30832 [2024-11-18 15:31:44,318 INFO L226 Difference]: Without dead ends: 22082 [2024-11-18 15:31:44,375 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 15:31:44,376 INFO L432 NwaCegarLoop]: 4409 mSDtfsCounter, 4578 mSDsluCounter, 13284 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 17693 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:44,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 17693 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:31:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22082 states. [2024-11-18 15:31:45,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22082 to 21783. [2024-11-18 15:31:45,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 19764 states have (on average 1.653612629022465) internal successors, (32682), 20432 states have internal predecessors, (32682), 967 states have call successors, (967), 384 states have call predecessors, (967), 1050 states have return successors, (5190), 1030 states have call predecessors, (5190), 967 states have call successors, (5190) [2024-11-18 15:31:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 38839 transitions. [2024-11-18 15:31:46,286 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 38839 transitions. Word has length 112 [2024-11-18 15:31:46,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:46,287 INFO L471 AbstractCegarLoop]: Abstraction has 21783 states and 38839 transitions. [2024-11-18 15:31:46,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 38839 transitions. [2024-11-18 15:31:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:46,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:46,300 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:46,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:31:46,301 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:46,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:46,302 INFO L85 PathProgramCache]: Analyzing trace with hash -704632217, now seen corresponding path program 1 times [2024-11-18 15:31:46,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:46,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541619973] [2024-11-18 15:31:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:46,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:46,418 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 15:31:46,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:46,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541619973] [2024-11-18 15:31:46,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541619973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:46,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:46,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416381508] [2024-11-18 15:31:46,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:46,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:46,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:46,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:46,421 INFO L87 Difference]: Start difference. First operand 21783 states and 38839 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:48,963 INFO L93 Difference]: Finished difference Result 70395 states and 131730 transitions. [2024-11-18 15:31:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:49,287 INFO L225 Difference]: With dead ends: 70395 [2024-11-18 15:31:49,287 INFO L226 Difference]: Without dead ends: 50749 [2024-11-18 15:31:49,407 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 15:31:49,409 INFO L432 NwaCegarLoop]: 4405 mSDtfsCounter, 4767 mSDsluCounter, 13261 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 17666 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:49,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 17666 Invalid, 734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:31:49,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50749 states. [2024-11-18 15:31:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50749 to 47027. [2024-11-18 15:31:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47027 states, 42334 states have (on average 1.6677847592951291) internal successors, (70604), 44396 states have internal predecessors, (70604), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 2828 states have return successors, (18502), 1990 states have call predecessors, (18502), 1863 states have call successors, (18502) [2024-11-18 15:31:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47027 states to 47027 states and 90969 transitions. [2024-11-18 15:31:53,184 INFO L78 Accepts]: Start accepts. Automaton has 47027 states and 90969 transitions. Word has length 112 [2024-11-18 15:31:53,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:31:53,185 INFO L471 AbstractCegarLoop]: Abstraction has 47027 states and 90969 transitions. [2024-11-18 15:31:53,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand 47027 states and 90969 transitions. [2024-11-18 15:31:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:31:53,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:31:53,213 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:31:53,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:31:53,214 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:31:53,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:31:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1699325915, now seen corresponding path program 1 times [2024-11-18 15:31:53,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:31:53,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662915756] [2024-11-18 15:31:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:31:53,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:31:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:31:53,339 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 15:31:53,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:31:53,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662915756] [2024-11-18 15:31:53,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662915756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:31:53,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:31:53,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:31:53,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283941381] [2024-11-18 15:31:53,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:31:53,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:31:53,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:31:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:31:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:31:53,346 INFO L87 Difference]: Start difference. First operand 47027 states and 90969 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:31:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:31:57,733 INFO L93 Difference]: Finished difference Result 154887 states and 325330 transitions. [2024-11-18 15:31:57,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:31:57,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:31:57,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:31:58,817 INFO L225 Difference]: With dead ends: 154887 [2024-11-18 15:31:58,818 INFO L226 Difference]: Without dead ends: 109997 [2024-11-18 15:31:58,969 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 15:31:58,971 INFO L432 NwaCegarLoop]: 4402 mSDtfsCounter, 4699 mSDsluCounter, 13241 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 17643 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:31:58,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4720 Valid, 17643 Invalid, 740 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [32 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:31:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109997 states. [2024-11-18 15:32:07,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109997 to 104613. [2024-11-18 15:32:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104613 states, 93178 states have (on average 1.6791731953894695) internal successors, (156462), 99486 states have internal predecessors, (156462), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 7842 states have return successors, (69638), 3846 states have call predecessors, (69638), 3591 states have call successors, (69638) [2024-11-18 15:32:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104613 states to 104613 states and 229691 transitions. [2024-11-18 15:32:09,367 INFO L78 Accepts]: Start accepts. Automaton has 104613 states and 229691 transitions. Word has length 112 [2024-11-18 15:32:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:32:09,368 INFO L471 AbstractCegarLoop]: Abstraction has 104613 states and 229691 transitions. [2024-11-18 15:32:09,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:09,368 INFO L276 IsEmpty]: Start isEmpty. Operand 104613 states and 229691 transitions. [2024-11-18 15:32:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:32:09,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:32:09,419 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:32:09,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:32:09,419 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:32:09,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:32:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash 637066595, now seen corresponding path program 1 times [2024-11-18 15:32:09,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:32:09,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657517620] [2024-11-18 15:32:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:32:09,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:32:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:32:09,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:32:09,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:32:09,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657517620] [2024-11-18 15:32:09,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657517620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:32:09,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:32:09,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:32:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937733323] [2024-11-18 15:32:09,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:32:09,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:32:09,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:32:09,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:32:09,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:32:09,531 INFO L87 Difference]: Start difference. First operand 104613 states and 229691 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:32:19,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:32:19,610 INFO L93 Difference]: Finished difference Result 350268 states and 870836 transitions. [2024-11-18 15:32:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:32:19,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:32:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:32:22,079 INFO L225 Difference]: With dead ends: 350268 [2024-11-18 15:32:22,079 INFO L226 Difference]: Without dead ends: 247792 [2024-11-18 15:32:22,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:32:22,401 INFO L432 NwaCegarLoop]: 4362 mSDtfsCounter, 4666 mSDsluCounter, 13148 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 17510 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:32:22,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 17510 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:32:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247792 states.