./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.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_label49+token_ring.12.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 02a5384e72a6893ea777db3cb5d438cb5a46ff3cad82e91f14686b217f61c414 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:44:22,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:44:22,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:44:22,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:44:22,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:44:22,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:44:22,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:44:22,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:44:22,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:44:22,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:44:22,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:44:22,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:44:22,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:44:22,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:44:22,929 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:44:22,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:44:22,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:44:22,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:44:22,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:44:22,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:44:22,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:44:22,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:44:22,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:44:22,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:44:22,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:44:22,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:44:22,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:44:22,935 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:44:22,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:44:22,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:44:22,935 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:44:22,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:44:22,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:44:22,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:44:22,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:44:22,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:44:22,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:44:22,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:44:22,936 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:44:22,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:44:22,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:44:22,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:44:22,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02a5384e72a6893ea777db3cb5d438cb5a46ff3cad82e91f14686b217f61c414 [2024-11-18 15:44:23,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:44:23,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:44:23,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:44:23,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:44:23,167 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:44:23,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-2.c [2024-11-18 15:44:24,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:44:25,173 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:44:25,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.12.cil-2.c [2024-11-18 15:44:25,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966c1fe42/b59863cfe559411f9c3f034700b2e5b8/FLAGb5c6efd78 [2024-11-18 15:44:25,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/966c1fe42/b59863cfe559411f9c3f034700b2e5b8 [2024-11-18 15:44:25,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:44:25,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:44:25,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:44:25,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:44:25,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:44:25,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:44:25" (1/1) ... [2024-11-18 15:44:25,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e45e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:25, skipping insertion in model container [2024-11-18 15:44:25,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:44:25" (1/1) ... [2024-11-18 15:44:25,840 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:44:27,287 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_label49+token_ring.12.cil-2.c[380593,380606] [2024-11-18 15:44:27,313 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_label49+token_ring.12.cil-2.c[383339,383352] [2024-11-18 15:44:27,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:44:27,561 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:44:28,550 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_label49+token_ring.12.cil-2.c[380593,380606] [2024-11-18 15:44:28,564 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_label49+token_ring.12.cil-2.c[383339,383352] [2024-11-18 15:44:28,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:44:28,714 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:44:28,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28 WrapperNode [2024-11-18 15:44:28,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:44:28,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:44:28,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:44:28,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:44:28,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:28,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,267 INFO L138 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13233 [2024-11-18 15:44:29,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:44:29,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:44:29,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:44:29,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:44:29,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,335 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,406 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 15:44:29,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,672 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,760 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:44:29,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:44:29,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:44:29,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:44:29,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (1/1) ... [2024-11-18 15:44:29,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:44:29,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:44:29,859 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 15:44:29,864 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 15:44:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:44:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:44:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:44:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:44:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:44:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:44:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:44:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:44:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:44:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:44:29,899 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:44:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:44:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:44:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:44:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:44:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:44:30,034 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:44:30,036 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:44:36,816 INFO L? ?]: Removed 1755 outVars from TransFormulas that were not future-live. [2024-11-18 15:44:36,817 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:44:36,866 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:44:36,866 INFO L316 CfgBuilder]: Removed 16 assume(true) statements. [2024-11-18 15:44:36,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:44:36 BoogieIcfgContainer [2024-11-18 15:44:36,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:44:36,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:44:36,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:44:36,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:44:36,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:44:25" (1/3) ... [2024-11-18 15:44:36,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c51a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:44:36, skipping insertion in model container [2024-11-18 15:44:36,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:44:28" (2/3) ... [2024-11-18 15:44:36,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c51a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:44:36, skipping insertion in model container [2024-11-18 15:44:36,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:44:36" (3/3) ... [2024-11-18 15:44:36,875 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.12.cil-2.c [2024-11-18 15:44:36,888 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:44:36,889 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:44:37,006 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:44:37,012 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;@49716b2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:44:37,012 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:44:37,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 2578 states, 2543 states have (on average 1.8387731026346834) internal successors, (4676), 2546 states have internal predecessors, (4676), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 15:44:37,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:37,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:37,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:37,040 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:37,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:37,045 INFO L85 PathProgramCache]: Analyzing trace with hash -80490959, now seen corresponding path program 1 times [2024-11-18 15:44:37,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:37,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450266582] [2024-11-18 15:44:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:37,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:37,454 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 15:44:37,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450266582] [2024-11-18 15:44:37,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450266582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:37,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:37,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:44:37,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303808083] [2024-11-18 15:44:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:37,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:44:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:37,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:44:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:44:37,500 INFO L87 Difference]: Start difference. First operand has 2578 states, 2543 states have (on average 1.8387731026346834) internal successors, (4676), 2546 states have internal predecessors, (4676), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 15:44:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:37,657 INFO L93 Difference]: Finished difference Result 5150 states and 9445 transitions. [2024-11-18 15:44:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:44:37,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:37,695 INFO L225 Difference]: With dead ends: 5150 [2024-11-18 15:44:37,695 INFO L226 Difference]: Without dead ends: 2511 [2024-11-18 15:44:37,706 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 15:44:37,709 INFO L432 NwaCegarLoop]: 4633 mSDtfsCounter, 606 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 8655 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 15:44:37,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 8655 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:44:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2024-11-18 15:44:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2024-11-18 15:44:37,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2477 states have (on average 1.8219620508679855) internal successors, (4513), 2479 states have internal predecessors, (4513), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 15:44:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4565 transitions. [2024-11-18 15:44:37,853 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4565 transitions. Word has length 178 [2024-11-18 15:44:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:37,855 INFO L471 AbstractCegarLoop]: Abstraction has 2511 states and 4565 transitions. [2024-11-18 15:44:37,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 15:44:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4565 transitions. [2024-11-18 15:44:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:37,860 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:37,860 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:37,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:44:37,861 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:37,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:37,861 INFO L85 PathProgramCache]: Analyzing trace with hash -170551249, now seen corresponding path program 1 times [2024-11-18 15:44:37,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:37,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082892069] [2024-11-18 15:44:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:37,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:37,960 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 15:44:37,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:37,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082892069] [2024-11-18 15:44:37,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082892069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:37,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:37,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:44:37,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255910788] [2024-11-18 15:44:37,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:37,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:44:37,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:37,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:44:37,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:44:37,965 INFO L87 Difference]: Start difference. First operand 2511 states and 4565 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 15:44:38,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:38,019 INFO L93 Difference]: Finished difference Result 2886 states and 5147 transitions. [2024-11-18 15:44:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:44:38,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:38,028 INFO L225 Difference]: With dead ends: 2886 [2024-11-18 15:44:38,028 INFO L226 Difference]: Without dead ends: 2511 [2024-11-18 15:44:38,031 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 15:44:38,031 INFO L432 NwaCegarLoop]: 4563 mSDtfsCounter, 592 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 8521 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 15:44:38,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 8521 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:44:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2024-11-18 15:44:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2024-11-18 15:44:38,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2477 states have (on average 1.821558336697618) internal successors, (4512), 2479 states have internal predecessors, (4512), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 15:44:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4564 transitions. [2024-11-18 15:44:38,078 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4564 transitions. Word has length 178 [2024-11-18 15:44:38,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:38,078 INFO L471 AbstractCegarLoop]: Abstraction has 2511 states and 4564 transitions. [2024-11-18 15:44:38,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 15:44:38,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4564 transitions. [2024-11-18 15:44:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:38,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:38,081 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:38,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:44:38,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:38,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1574420435, now seen corresponding path program 1 times [2024-11-18 15:44:38,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:38,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786327681] [2024-11-18 15:44:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:38,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:38,271 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 15:44:38,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:38,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786327681] [2024-11-18 15:44:38,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786327681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:38,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:38,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:44:38,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034360980] [2024-11-18 15:44:38,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:38,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:44:38,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:44:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:44:38,274 INFO L87 Difference]: Start difference. First operand 2511 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 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 15:44:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:38,969 INFO L93 Difference]: Finished difference Result 3299 states and 5808 transitions. [2024-11-18 15:44:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:44:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:38,984 INFO L225 Difference]: With dead ends: 3299 [2024-11-18 15:44:38,985 INFO L226 Difference]: Without dead ends: 2929 [2024-11-18 15:44:38,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:38,989 INFO L432 NwaCegarLoop]: 4431 mSDtfsCounter, 5120 mSDsluCounter, 9131 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 13562 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:38,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 13562 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:44:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2024-11-18 15:44:39,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2900. [2024-11-18 15:44:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2838 states have (on average 1.7903453136011276) internal successors, (5081), 2841 states have internal predecessors, (5081), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2024-11-18 15:44:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 5176 transitions. [2024-11-18 15:44:39,234 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 5176 transitions. Word has length 178 [2024-11-18 15:44:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:39,234 INFO L471 AbstractCegarLoop]: Abstraction has 2900 states and 5176 transitions. [2024-11-18 15:44:39,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 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 15:44:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 5176 transitions. [2024-11-18 15:44:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:39,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:39,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:39,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:44:39,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:39,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1844561585, now seen corresponding path program 1 times [2024-11-18 15:44:39,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:39,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873800705] [2024-11-18 15:44:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:39,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:39,452 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 15:44:39,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:39,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873800705] [2024-11-18 15:44:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873800705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:39,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:39,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:39,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566073278] [2024-11-18 15:44:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:39,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:39,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:39,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:39,457 INFO L87 Difference]: Start difference. First operand 2900 states and 5176 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:40,304 INFO L93 Difference]: Finished difference Result 4154 states and 7177 transitions. [2024-11-18 15:44:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:44:40,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:40,318 INFO L225 Difference]: With dead ends: 4154 [2024-11-18 15:44:40,319 INFO L226 Difference]: Without dead ends: 3395 [2024-11-18 15:44:40,322 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 15:44:40,323 INFO L432 NwaCegarLoop]: 4761 mSDtfsCounter, 5130 mSDsluCounter, 14352 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5150 SdHoareTripleChecker+Valid, 19113 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:40,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5150 Valid, 19113 Invalid, 1114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 15:44:40,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2024-11-18 15:44:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3262. [2024-11-18 15:44:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3262 states, 3172 states have (on average 1.764186633039092) internal successors, (5596), 3176 states have internal predecessors, (5596), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (72), 69 states have call predecessors, (72), 68 states have call successors, (72) [2024-11-18 15:44:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3262 states to 3262 states and 5736 transitions. [2024-11-18 15:44:40,406 INFO L78 Accepts]: Start accepts. Automaton has 3262 states and 5736 transitions. Word has length 178 [2024-11-18 15:44:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:40,406 INFO L471 AbstractCegarLoop]: Abstraction has 3262 states and 5736 transitions. [2024-11-18 15:44:40,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3262 states and 5736 transitions. [2024-11-18 15:44:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:40,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:40,409 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:40,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:44:40,409 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:40,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:40,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1233292527, now seen corresponding path program 1 times [2024-11-18 15:44:40,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:40,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403993247] [2024-11-18 15:44:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:40,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:40,571 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 15:44:40,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:40,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403993247] [2024-11-18 15:44:40,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403993247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:40,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:40,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86878340] [2024-11-18 15:44:40,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:40,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:40,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:40,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:40,574 INFO L87 Difference]: Start difference. First operand 3262 states and 5736 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:41,394 INFO L93 Difference]: Finished difference Result 5310 states and 8996 transitions. [2024-11-18 15:44:41,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:44:41,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:41,414 INFO L225 Difference]: With dead ends: 5310 [2024-11-18 15:44:41,414 INFO L226 Difference]: Without dead ends: 4189 [2024-11-18 15:44:41,419 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 15:44:41,422 INFO L432 NwaCegarLoop]: 4473 mSDtfsCounter, 5157 mSDsluCounter, 13653 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5177 SdHoareTripleChecker+Valid, 18126 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:41,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5177 Valid, 18126 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:44:41,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2024-11-18 15:44:41,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 4035. [2024-11-18 15:44:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 3887 states have (on average 1.7280679187033703) internal successors, (6717), 3895 states have internal predecessors, (6717), 110 states have call successors, (110), 30 states have call predecessors, (110), 36 states have return successors, (126), 113 states have call predecessors, (126), 110 states have call successors, (126) [2024-11-18 15:44:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 6953 transitions. [2024-11-18 15:44:41,559 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 6953 transitions. Word has length 178 [2024-11-18 15:44:41,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:41,559 INFO L471 AbstractCegarLoop]: Abstraction has 4035 states and 6953 transitions. [2024-11-18 15:44:41,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 6953 transitions. [2024-11-18 15:44:41,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:41,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:41,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:41,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:44:41,563 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:41,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash -171899151, now seen corresponding path program 1 times [2024-11-18 15:44:41,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:41,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655518788] [2024-11-18 15:44:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:41,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:41,732 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 15:44:41,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:41,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655518788] [2024-11-18 15:44:41,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655518788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:41,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:41,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978218843] [2024-11-18 15:44:41,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:41,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:41,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:41,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:41,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:41,738 INFO L87 Difference]: Start difference. First operand 4035 states and 6953 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:42,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:42,625 INFO L93 Difference]: Finished difference Result 7813 states and 13019 transitions. [2024-11-18 15:44:42,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:44:42,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:42,649 INFO L225 Difference]: With dead ends: 7813 [2024-11-18 15:44:42,650 INFO L226 Difference]: Without dead ends: 5919 [2024-11-18 15:44:42,658 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 15:44:42,661 INFO L432 NwaCegarLoop]: 4754 mSDtfsCounter, 5120 mSDsluCounter, 14331 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 19085 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:42,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5140 Valid, 19085 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 15:44:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5919 states. [2024-11-18 15:44:42,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5919 to 5722. [2024-11-18 15:44:42,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 5452 states have (on average 1.6913059427732942) internal successors, (9221), 5474 states have internal predecessors, (9221), 194 states have call successors, (194), 54 states have call predecessors, (194), 74 states have return successors, (258), 201 states have call predecessors, (258), 194 states have call successors, (258) [2024-11-18 15:44:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 9673 transitions. [2024-11-18 15:44:42,863 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 9673 transitions. Word has length 178 [2024-11-18 15:44:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:42,864 INFO L471 AbstractCegarLoop]: Abstraction has 5722 states and 9673 transitions. [2024-11-18 15:44:42,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 9673 transitions. [2024-11-18 15:44:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:42,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:42,869 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:42,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:44:42,869 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:42,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:42,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1722434735, now seen corresponding path program 1 times [2024-11-18 15:44:42,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:42,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570282470] [2024-11-18 15:44:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:43,081 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 15:44:43,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570282470] [2024-11-18 15:44:43,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570282470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:43,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:43,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858942016] [2024-11-18 15:44:43,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:43,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:43,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:43,084 INFO L87 Difference]: Start difference. First operand 5722 states and 9673 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:43,874 INFO L93 Difference]: Finished difference Result 13326 states and 22121 transitions. [2024-11-18 15:44:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:44:43,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:43,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:43,918 INFO L225 Difference]: With dead ends: 13326 [2024-11-18 15:44:43,919 INFO L226 Difference]: Without dead ends: 9745 [2024-11-18 15:44:43,932 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 15:44:43,933 INFO L432 NwaCegarLoop]: 4747 mSDtfsCounter, 5112 mSDsluCounter, 14312 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 19059 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:43,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5132 Valid, 19059 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:44:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9745 states. [2024-11-18 15:44:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9745 to 9474. [2024-11-18 15:44:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9474 states, 8942 states have (on average 1.6693133527175128) internal successors, (14927), 9010 states have internal predecessors, (14927), 362 states have call successors, (362), 102 states have call predecessors, (362), 168 states have return successors, (618), 377 states have call predecessors, (618), 362 states have call successors, (618) [2024-11-18 15:44:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9474 states to 9474 states and 15907 transitions. [2024-11-18 15:44:44,165 INFO L78 Accepts]: Start accepts. Automaton has 9474 states and 15907 transitions. Word has length 178 [2024-11-18 15:44:44,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:44,165 INFO L471 AbstractCegarLoop]: Abstraction has 9474 states and 15907 transitions. [2024-11-18 15:44:44,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:44,166 INFO L276 IsEmpty]: Start isEmpty. Operand 9474 states and 15907 transitions. [2024-11-18 15:44:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:44,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:44,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:44,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:44:44,170 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:44,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:44,172 INFO L85 PathProgramCache]: Analyzing trace with hash 799267309, now seen corresponding path program 1 times [2024-11-18 15:44:44,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:44,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224438744] [2024-11-18 15:44:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:44,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:44,303 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 15:44:44,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224438744] [2024-11-18 15:44:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224438744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:44,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:44,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:44,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727654598] [2024-11-18 15:44:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:44,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:44,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:44,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:44,306 INFO L87 Difference]: Start difference. First operand 9474 states and 15907 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:45,309 INFO L93 Difference]: Finished difference Result 25846 states and 43565 transitions. [2024-11-18 15:44:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:44:45,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:45,361 INFO L225 Difference]: With dead ends: 25846 [2024-11-18 15:44:45,362 INFO L226 Difference]: Without dead ends: 18513 [2024-11-18 15:44:45,386 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 15:44:45,387 INFO L432 NwaCegarLoop]: 4744 mSDtfsCounter, 5107 mSDsluCounter, 14303 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 19047 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:45,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5127 Valid, 19047 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:44:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18513 states. [2024-11-18 15:44:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18513 to 18085. [2024-11-18 15:44:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18085 states, 16975 states have (on average 1.6720471281296023) internal successors, (28383), 17189 states have internal predecessors, (28383), 698 states have call successors, (698), 198 states have call predecessors, (698), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2024-11-18 15:44:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18085 states to 18085 states and 30803 transitions. [2024-11-18 15:44:45,833 INFO L78 Accepts]: Start accepts. Automaton has 18085 states and 30803 transitions. Word has length 178 [2024-11-18 15:44:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:45,833 INFO L471 AbstractCegarLoop]: Abstraction has 18085 states and 30803 transitions. [2024-11-18 15:44:45,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 18085 states and 30803 transitions. [2024-11-18 15:44:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:45,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:45,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:45,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:44:45,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:45,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1185129711, now seen corresponding path program 1 times [2024-11-18 15:44:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:45,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057590234] [2024-11-18 15:44:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:45,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:45,940 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 15:44:45,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:45,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057590234] [2024-11-18 15:44:45,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057590234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:45,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:45,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:44:45,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341413065] [2024-11-18 15:44:45,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:45,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:44:45,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:45,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:44:45,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:44:45,944 INFO L87 Difference]: Start difference. First operand 18085 states and 30803 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:46,704 INFO L93 Difference]: Finished difference Result 38929 states and 67772 transitions. [2024-11-18 15:44:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:44:46,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:46,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:46,774 INFO L225 Difference]: With dead ends: 38929 [2024-11-18 15:44:46,774 INFO L226 Difference]: Without dead ends: 22985 [2024-11-18 15:44:46,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:46,823 INFO L432 NwaCegarLoop]: 4408 mSDtfsCounter, 4776 mSDsluCounter, 8661 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 13069 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:46,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4796 Valid, 13069 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:44:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22985 states. [2024-11-18 15:44:47,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22985 to 18085. [2024-11-18 15:44:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18085 states, 16975 states have (on average 1.6701030927835052) internal successors, (28350), 17189 states have internal predecessors, (28350), 698 states have call successors, (698), 198 states have call predecessors, (698), 410 states have return successors, (1722), 729 states have call predecessors, (1722), 698 states have call successors, (1722) [2024-11-18 15:44:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18085 states to 18085 states and 30770 transitions. [2024-11-18 15:44:47,322 INFO L78 Accepts]: Start accepts. Automaton has 18085 states and 30770 transitions. Word has length 178 [2024-11-18 15:44:47,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:47,323 INFO L471 AbstractCegarLoop]: Abstraction has 18085 states and 30770 transitions. [2024-11-18 15:44:47,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:47,323 INFO L276 IsEmpty]: Start isEmpty. Operand 18085 states and 30770 transitions. [2024-11-18 15:44:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:47,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:47,331 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:47,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:44:47,331 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:47,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash 920482221, now seen corresponding path program 1 times [2024-11-18 15:44:47,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:47,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105353575] [2024-11-18 15:44:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:47,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:47,575 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 15:44:47,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:47,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105353575] [2024-11-18 15:44:47,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105353575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:47,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:47,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:47,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615888276] [2024-11-18 15:44:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:47,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:47,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:47,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:47,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:47,578 INFO L87 Difference]: Start difference. First operand 18085 states and 30770 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:49,305 INFO L93 Difference]: Finished difference Result 54861 states and 95552 transitions. [2024-11-18 15:44:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:44:49,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:49,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:49,461 INFO L225 Difference]: With dead ends: 54861 [2024-11-18 15:44:49,462 INFO L226 Difference]: Without dead ends: 38917 [2024-11-18 15:44:49,522 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 15:44:49,523 INFO L432 NwaCegarLoop]: 4736 mSDtfsCounter, 5094 mSDsluCounter, 14280 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5114 SdHoareTripleChecker+Valid, 19016 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:49,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5114 Valid, 19016 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:44:49,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38917 states. [2024-11-18 15:44:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38917 to 38223. [2024-11-18 15:44:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38223 states, 35795 states have (on average 1.6918564045257718) internal successors, (60560), 36463 states have internal predecessors, (60560), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 1056 states have return successors, (5466), 1433 states have call predecessors, (5466), 1370 states have call successors, (5466) [2024-11-18 15:44:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38223 states to 38223 states and 67396 transitions. [2024-11-18 15:44:50,746 INFO L78 Accepts]: Start accepts. Automaton has 38223 states and 67396 transitions. Word has length 178 [2024-11-18 15:44:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:50,746 INFO L471 AbstractCegarLoop]: Abstraction has 38223 states and 67396 transitions. [2024-11-18 15:44:50,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 38223 states and 67396 transitions. [2024-11-18 15:44:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:50,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:50,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:50,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:44:50,759 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:50,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1443359441, now seen corresponding path program 1 times [2024-11-18 15:44:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050182789] [2024-11-18 15:44:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:50,921 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 15:44:50,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:50,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050182789] [2024-11-18 15:44:50,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050182789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:50,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:50,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:50,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114300354] [2024-11-18 15:44:50,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:50,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:50,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:50,926 INFO L87 Difference]: Start difference. First operand 38223 states and 67396 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:54,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:54,010 INFO L93 Difference]: Finished difference Result 124321 states and 228176 transitions. [2024-11-18 15:44:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:44:54,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:44:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:54,390 INFO L225 Difference]: With dead ends: 124321 [2024-11-18 15:44:54,390 INFO L226 Difference]: Without dead ends: 88239 [2024-11-18 15:44:54,580 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 15:44:54,581 INFO L432 NwaCegarLoop]: 4733 mSDtfsCounter, 5089 mSDsluCounter, 14271 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 19004 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:54,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5109 Valid, 19004 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:44:54,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88239 states. [2024-11-18 15:44:57,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88239 to 87004. [2024-11-18 15:44:57,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87004 states, 81454 states have (on average 1.7248999435264076) internal successors, (140500), 83516 states have internal predecessors, (140500), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 2834 states have return successors, (19098), 2841 states have call predecessors, (19098), 2714 states have call successors, (19098) [2024-11-18 15:44:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87004 states to 87004 states and 162312 transitions. [2024-11-18 15:44:57,872 INFO L78 Accepts]: Start accepts. Automaton has 87004 states and 162312 transitions. Word has length 178 [2024-11-18 15:44:57,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:57,873 INFO L471 AbstractCegarLoop]: Abstraction has 87004 states and 162312 transitions. [2024-11-18 15:44:57,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:44:57,874 INFO L276 IsEmpty]: Start isEmpty. Operand 87004 states and 162312 transitions. [2024-11-18 15:44:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:44:57,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:57,907 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:44:57,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 15:44:57,908 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:57,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:57,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1528428909, now seen corresponding path program 1 times [2024-11-18 15:44:57,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:57,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180040795] [2024-11-18 15:44:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:57,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:58,065 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 15:44:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180040795] [2024-11-18 15:44:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180040795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:58,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:58,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503856935] [2024-11-18 15:44:58,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:58,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:58,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:58,068 INFO L87 Difference]: Start difference. First operand 87004 states and 162312 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:45:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:45:04,761 INFO L93 Difference]: Finished difference Result 295742 states and 583218 transitions. [2024-11-18 15:45:04,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:45:04,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2024-11-18 15:45:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:45:05,762 INFO L225 Difference]: With dead ends: 295742 [2024-11-18 15:45:05,762 INFO L226 Difference]: Without dead ends: 210879 [2024-11-18 15:45:06,354 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 15:45:06,355 INFO L432 NwaCegarLoop]: 4456 mSDtfsCounter, 5128 mSDsluCounter, 13601 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5148 SdHoareTripleChecker+Valid, 18057 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:45:06,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5148 Valid, 18057 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:45:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210879 states. [2024-11-18 15:45:16,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210879 to 208623. [2024-11-18 15:45:16,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208623 states, 195371 states have (on average 1.7610392535227848) internal successors, (344056), 201679 states have internal predecessors, (344056), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 7848 states have return successors, (70938), 5657 states have call predecessors, (70938), 5402 states have call successors, (70938) [2024-11-18 15:45:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208623 states to 208623 states and 420396 transitions. [2024-11-18 15:45:18,296 INFO L78 Accepts]: Start accepts. Automaton has 208623 states and 420396 transitions. Word has length 178 [2024-11-18 15:45:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:45:18,297 INFO L471 AbstractCegarLoop]: Abstraction has 208623 states and 420396 transitions. [2024-11-18 15:45:18,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:45:18,297 INFO L276 IsEmpty]: Start isEmpty. Operand 208623 states and 420396 transitions. [2024-11-18 15:45:18,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 15:45:18,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:45:18,352 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:45:18,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 15:45:18,353 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:45:18,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:45:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash -869558929, now seen corresponding path program 1 times [2024-11-18 15:45:18,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:45:18,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261897581] [2024-11-18 15:45:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:45:18,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:45:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:45:18,441 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 15:45:18,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:45:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261897581] [2024-11-18 15:45:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261897581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:45:18,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:45:18,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:45:18,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449442774] [2024-11-18 15:45:18,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:45:18,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:45:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:45:18,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:45:18,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:45:18,444 INFO L87 Difference]: Start difference. First operand 208623 states and 420396 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 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)