./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8099d26797381b80337a430cbea65f80d24d8bb2ab20ef5e1337fe6b0f67d890 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:43:31,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:43:31,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:43:31,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:43:31,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:43:31,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:43:31,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:43:31,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:43:31,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:43:31,833 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:43:31,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:43:31,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:43:31,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:43:31,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:43:31,837 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:43:31,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:43:31,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:43:31,838 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:43:31,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:43:31,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:43:31,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:43:31,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:43:31,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:43:31,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:43:31,842 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:43:31,843 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:43:31,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:43:31,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:43:31,843 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:43:31,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:43:31,844 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:43:31,844 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:43:31,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:43:31,844 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:43:31,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:43:31,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:43:31,845 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:43:31,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:43:31,845 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:43:31,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:43:31,846 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:43:31,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:43:31,847 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8099d26797381b80337a430cbea65f80d24d8bb2ab20ef5e1337fe6b0f67d890 [2024-11-18 15:43:32,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:43:32,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:43:32,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:43:32,153 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:43:32,154 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:43:32,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c [2024-11-18 15:43:33,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:43:34,207 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:43:34,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c [2024-11-18 15:43:34,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54cc5852f/a1edcd69a184456cbace0f255e496999/FLAGb0fc6608c [2024-11-18 15:43:34,272 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54cc5852f/a1edcd69a184456cbace0f255e496999 [2024-11-18 15:43:34,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:43:34,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:43:34,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:43:34,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:43:34,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:43:34,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:43:34" (1/1) ... [2024-11-18 15:43:34,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@397758d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:34, skipping insertion in model container [2024-11-18 15:43:34,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:43:34" (1/1) ... [2024-11-18 15:43:34,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:43:36,062 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.06.cil-2.c[380593,380606] [2024-11-18 15:43:36,088 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.06.cil-2.c[383339,383352] [2024-11-18 15:43:36,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:43:36,273 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:43:37,002 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.06.cil-2.c[380593,380606] [2024-11-18 15:43:37,007 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.06.cil-2.c[383339,383352] [2024-11-18 15:43:37,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:43:37,082 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:43:37,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37 WrapperNode [2024-11-18 15:43:37,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:43:37,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:43:37,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:43:37,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:43:37,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:37,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:37,579 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12873 [2024-11-18 15:43:37,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:43:37,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:43:37,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:43:37,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:43:37,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:37,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:37,835 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:37,953 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 15:43:37,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:37,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:38,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:38,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:38,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:38,248 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:38,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:43:38,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:43:38,319 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:43:38,319 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:43:38,320 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (1/1) ... [2024-11-18 15:43:38,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:43:38,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:38,356 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 15:43:38,360 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 15:43:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:43:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:43:38,414 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:43:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:43:38,416 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:43:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:43:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:43:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:43:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:43:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:43:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:43:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:43:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:43:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:43:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:43:38,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:43:38,559 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:43:38,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:43:46,083 INFO L? ?]: Removed 1719 outVars from TransFormulas that were not future-live. [2024-11-18 15:43:46,084 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:43:46,146 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:43:46,146 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-18 15:43:46,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:43:46 BoogieIcfgContainer [2024-11-18 15:43:46,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:43:46,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:43:46,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:43:46,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:43:46,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:43:34" (1/3) ... [2024-11-18 15:43:46,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c389eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:43:46, skipping insertion in model container [2024-11-18 15:43:46,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:37" (2/3) ... [2024-11-18 15:43:46,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c389eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:43:46, skipping insertion in model container [2024-11-18 15:43:46,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:43:46" (3/3) ... [2024-11-18 15:43:46,161 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.06.cil-2.c [2024-11-18 15:43:46,179 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:43:46,180 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:43:46,307 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:43:46,315 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;@53fcab7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:43:46,316 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:43:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:43:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:46,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:46,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:46,343 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:46,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash -603322071, now seen corresponding path program 1 times [2024-11-18 15:43:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788737897] [2024-11-18 15:43:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:46,728 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 15:43:46,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:46,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788737897] [2024-11-18 15:43:46,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788737897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:46,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:46,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:43:46,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455922439] [2024-11-18 15:43:46,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:46,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:46,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:46,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:43:46,778 INFO L87 Difference]: Start difference. First operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:46,987 INFO L93 Difference]: Finished difference Result 4834 states and 8909 transitions. [2024-11-18 15:43:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:46,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:43:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:47,024 INFO L225 Difference]: With dead ends: 4834 [2024-11-18 15:43:47,024 INFO L226 Difference]: Without dead ends: 2355 [2024-11-18 15:43:47,036 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 15:43:47,039 INFO L432 NwaCegarLoop]: 4381 mSDtfsCounter, 350 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 8403 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:47,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 8403 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2024-11-18 15:43:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2024-11-18 15:43:47,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2327 states have (on average 1.8362698753760207) internal successors, (4273), 2329 states have internal predecessors, (4273), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:43:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4313 transitions. [2024-11-18 15:43:47,202 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4313 transitions. Word has length 112 [2024-11-18 15:43:47,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:47,204 INFO L471 AbstractCegarLoop]: Abstraction has 2355 states and 4313 transitions. [2024-11-18 15:43:47,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4313 transitions. [2024-11-18 15:43:47,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:47,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:47,210 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:47,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:43:47,210 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:47,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1634362969, now seen corresponding path program 1 times [2024-11-18 15:43:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895003785] [2024-11-18 15:43:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:47,598 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 15:43:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:47,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895003785] [2024-11-18 15:43:47,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895003785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:47,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:47,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:47,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459108535] [2024-11-18 15:43:47,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:47,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:47,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:47,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:47,606 INFO L87 Difference]: Start difference. First operand 2355 states and 4313 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:48,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:48,396 INFO L93 Difference]: Finished difference Result 2835 states and 5064 transitions. [2024-11-18 15:43:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:43:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:48,414 INFO L225 Difference]: With dead ends: 2835 [2024-11-18 15:43:48,414 INFO L226 Difference]: Without dead ends: 2615 [2024-11-18 15:43:48,417 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 15:43:48,418 INFO L432 NwaCegarLoop]: 4424 mSDtfsCounter, 4603 mSDsluCounter, 13357 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 17781 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:48,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 17781 Invalid, 734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:43:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-11-18 15:43:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2585. [2024-11-18 15:43:48,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2532 states have (on average 1.8131911532385465) internal successors, (4591), 2536 states have internal predecessors, (4591), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-18 15:43:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4672 transitions. [2024-11-18 15:43:48,506 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4672 transitions. Word has length 112 [2024-11-18 15:43:48,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:48,506 INFO L471 AbstractCegarLoop]: Abstraction has 2585 states and 4672 transitions. [2024-11-18 15:43:48,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:48,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4672 transitions. [2024-11-18 15:43:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:48,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:48,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:48,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:43:48,511 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:48,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:48,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1041629413, now seen corresponding path program 1 times [2024-11-18 15:43:48,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:48,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812387485] [2024-11-18 15:43:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:48,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:48,872 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 15:43:48,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812387485] [2024-11-18 15:43:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812387485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:48,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:48,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176882565] [2024-11-18 15:43:48,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:48,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:48,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:48,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:48,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:48,878 INFO L87 Difference]: Start difference. First operand 2585 states and 4672 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:49,513 INFO L93 Difference]: Finished difference Result 3524 states and 6140 transitions. [2024-11-18 15:43:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:43:49,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:49,529 INFO L225 Difference]: With dead ends: 3524 [2024-11-18 15:43:49,529 INFO L226 Difference]: Without dead ends: 3076 [2024-11-18 15:43:49,532 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 15:43:49,535 INFO L432 NwaCegarLoop]: 4364 mSDtfsCounter, 4599 mSDsluCounter, 13206 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 17570 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:49,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 17570 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:43:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2024-11-18 15:43:49,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3035. [2024-11-18 15:43:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2936 states have (on average 1.7758855585831064) internal successors, (5214), 2944 states have internal predecessors, (5214), 67 states have call successors, (67), 24 states have call predecessors, (67), 30 states have return successors, (90), 70 states have call predecessors, (90), 67 states have call successors, (90) [2024-11-18 15:43:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 5371 transitions. [2024-11-18 15:43:49,629 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 5371 transitions. Word has length 112 [2024-11-18 15:43:49,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:49,630 INFO L471 AbstractCegarLoop]: Abstraction has 3035 states and 5371 transitions. [2024-11-18 15:43:49,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 5371 transitions. [2024-11-18 15:43:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:49,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:49,634 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:49,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:43:49,635 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:49,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash 158120423, now seen corresponding path program 1 times [2024-11-18 15:43:49,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:49,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355849424] [2024-11-18 15:43:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:49,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:49,799 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 15:43:49,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355849424] [2024-11-18 15:43:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355849424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543049287] [2024-11-18 15:43:49,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:49,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:49,804 INFO L87 Difference]: Start difference. First operand 3035 states and 5371 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:50,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:50,447 INFO L93 Difference]: Finished difference Result 4963 states and 8421 transitions. [2024-11-18 15:43:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:50,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:43:50,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:50,470 INFO L225 Difference]: With dead ends: 4963 [2024-11-18 15:43:50,471 INFO L226 Difference]: Without dead ends: 4065 [2024-11-18 15:43:50,478 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 15:43:50,479 INFO L432 NwaCegarLoop]: 4416 mSDtfsCounter, 4593 mSDsluCounter, 13321 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 17737 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:50,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 17737 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:43:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2024-11-18 15:43:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4003. [2024-11-18 15:43:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3806 states have (on average 1.7277982133473464) internal successors, (6576), 3828 states have internal predecessors, (6576), 127 states have call successors, (127), 48 states have call predecessors, (127), 68 states have return successors, (206), 134 states have call predecessors, (206), 127 states have call successors, (206) [2024-11-18 15:43:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 6909 transitions. [2024-11-18 15:43:50,636 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 6909 transitions. Word has length 112 [2024-11-18 15:43:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:50,637 INFO L471 AbstractCegarLoop]: Abstraction has 4003 states and 6909 transitions. [2024-11-18 15:43:50,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 6909 transitions. [2024-11-18 15:43:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:50,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:50,640 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:50,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:43:50,640 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:50,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:50,641 INFO L85 PathProgramCache]: Analyzing trace with hash 129620133, now seen corresponding path program 1 times [2024-11-18 15:43:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:50,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044364711] [2024-11-18 15:43:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:50,818 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 15:43:50,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:50,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044364711] [2024-11-18 15:43:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044364711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:50,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:50,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:50,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834302032] [2024-11-18 15:43:50,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:50,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:50,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:50,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:50,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:50,821 INFO L87 Difference]: Start difference. First operand 4003 states and 6909 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:51,511 INFO L93 Difference]: Finished difference Result 8094 states and 13531 transitions. [2024-11-18 15:43:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:51,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:43:51,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:51,550 INFO L225 Difference]: With dead ends: 8094 [2024-11-18 15:43:51,551 INFO L226 Difference]: Without dead ends: 6228 [2024-11-18 15:43:51,562 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 15:43:51,563 INFO L432 NwaCegarLoop]: 4415 mSDtfsCounter, 4588 mSDsluCounter, 13313 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 17728 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:51,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4602 Valid, 17728 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:43:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2024-11-18 15:43:51,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 6127. [2024-11-18 15:43:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6127 states, 5716 states have (on average 1.6826452064380686) internal successors, (9618), 5784 states have internal predecessors, (9618), 247 states have call successors, (247), 96 states have call predecessors, (247), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-11-18 15:43:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 10399 transitions. [2024-11-18 15:43:51,887 INFO L78 Accepts]: Start accepts. Automaton has 6127 states and 10399 transitions. Word has length 112 [2024-11-18 15:43:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:51,888 INFO L471 AbstractCegarLoop]: Abstraction has 6127 states and 10399 transitions. [2024-11-18 15:43:51,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 6127 states and 10399 transitions. [2024-11-18 15:43:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:51,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:51,893 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:51,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:43:51,893 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:51,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1810961881, now seen corresponding path program 1 times [2024-11-18 15:43:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:51,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625157492] [2024-11-18 15:43:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:52,033 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 15:43:52,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625157492] [2024-11-18 15:43:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625157492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:52,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:52,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:52,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343955690] [2024-11-18 15:43:52,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:52,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:52,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:52,036 INFO L87 Difference]: Start difference. First operand 6127 states and 10399 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:52,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:52,854 INFO L93 Difference]: Finished difference Result 15049 states and 25389 transitions. [2024-11-18 15:43:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:52,855 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:43:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:52,943 INFO L225 Difference]: With dead ends: 15049 [2024-11-18 15:43:52,946 INFO L226 Difference]: Without dead ends: 11059 [2024-11-18 15:43:52,968 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 15:43:52,969 INFO L432 NwaCegarLoop]: 4412 mSDtfsCounter, 4583 mSDsluCounter, 13297 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4597 SdHoareTripleChecker+Valid, 17709 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:52,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4597 Valid, 17709 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:43:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2024-11-18 15:43:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 10887. [2024-11-18 15:43:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10887 states, 9994 states have (on average 1.6565939563738243) internal successors, (16556), 10208 states have internal predecessors, (16556), 487 states have call successors, (487), 192 states have call predecessors, (487), 404 states have return successors, (1574), 518 states have call predecessors, (1574), 487 states have call successors, (1574) [2024-11-18 15:43:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10887 states to 10887 states and 18617 transitions. [2024-11-18 15:43:53,538 INFO L78 Accepts]: Start accepts. Automaton has 10887 states and 18617 transitions. Word has length 112 [2024-11-18 15:43:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:53,539 INFO L471 AbstractCegarLoop]: Abstraction has 10887 states and 18617 transitions. [2024-11-18 15:43:53,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 10887 states and 18617 transitions. [2024-11-18 15:43:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:53,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:53,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:53,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:43:53,549 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:53,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash 66101349, now seen corresponding path program 1 times [2024-11-18 15:43:53,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:53,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879181214] [2024-11-18 15:43:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:53,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:53,671 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 15:43:53,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:53,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879181214] [2024-11-18 15:43:53,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879181214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:53,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:53,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:53,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015950869] [2024-11-18 15:43:53,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:53,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:53,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:53,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:53,674 INFO L87 Difference]: Start difference. First operand 10887 states and 18617 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:54,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:54,748 INFO L93 Difference]: Finished difference Result 30832 states and 54099 transitions. [2024-11-18 15:43:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:54,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:43:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:54,880 INFO L225 Difference]: With dead ends: 30832 [2024-11-18 15:43:54,880 INFO L226 Difference]: Without dead ends: 22082 [2024-11-18 15:43:54,931 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 15:43:54,934 INFO L432 NwaCegarLoop]: 4409 mSDtfsCounter, 4578 mSDsluCounter, 13284 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 17693 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:54,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 17693 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:43:54,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22082 states. [2024-11-18 15:43:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22082 to 21783. [2024-11-18 15:43:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 19764 states have (on average 1.653612629022465) internal successors, (32682), 20432 states have internal predecessors, (32682), 967 states have call successors, (967), 384 states have call predecessors, (967), 1050 states have return successors, (5190), 1030 states have call predecessors, (5190), 967 states have call successors, (5190) [2024-11-18 15:43:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 38839 transitions. [2024-11-18 15:43:56,643 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 38839 transitions. Word has length 112 [2024-11-18 15:43:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:56,644 INFO L471 AbstractCegarLoop]: Abstraction has 21783 states and 38839 transitions. [2024-11-18 15:43:56,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:56,644 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 38839 transitions. [2024-11-18 15:43:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:43:56,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:56,660 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:56,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:43:56,660 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:56,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash -704632217, now seen corresponding path program 1 times [2024-11-18 15:43:56,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:56,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324989761] [2024-11-18 15:43:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:56,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:56,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:56,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324989761] [2024-11-18 15:43:56,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324989761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:56,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:56,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664974245] [2024-11-18 15:43:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:56,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:56,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:56,779 INFO L87 Difference]: Start difference. First operand 21783 states and 38839 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:58,753 INFO L93 Difference]: Finished difference Result 70395 states and 131730 transitions. [2024-11-18 15:43:58,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:43:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:59,123 INFO L225 Difference]: With dead ends: 70395 [2024-11-18 15:43:59,123 INFO L226 Difference]: Without dead ends: 50749 [2024-11-18 15:43:59,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:59,213 INFO L432 NwaCegarLoop]: 4405 mSDtfsCounter, 4767 mSDsluCounter, 13261 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 17666 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:59,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 17666 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:43:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50749 states. [2024-11-18 15:44:01,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50749 to 47027. [2024-11-18 15:44:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47027 states, 42334 states have (on average 1.6677847592951291) internal successors, (70604), 44396 states have internal predecessors, (70604), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 2828 states have return successors, (18502), 1990 states have call predecessors, (18502), 1863 states have call successors, (18502) [2024-11-18 15:44:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47027 states to 47027 states and 90969 transitions. [2024-11-18 15:44:02,059 INFO L78 Accepts]: Start accepts. Automaton has 47027 states and 90969 transitions. Word has length 112 [2024-11-18 15:44:02,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:02,060 INFO L471 AbstractCegarLoop]: Abstraction has 47027 states and 90969 transitions. [2024-11-18 15:44:02,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:44:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 47027 states and 90969 transitions. [2024-11-18 15:44:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:44:02,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:02,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:44:02,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:44:02,092 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:02,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:02,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1699325915, now seen corresponding path program 1 times [2024-11-18 15:44:02,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:02,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652077979] [2024-11-18 15:44:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:02,218 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 15:44:02,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652077979] [2024-11-18 15:44:02,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652077979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:02,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:02,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:02,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349973111] [2024-11-18 15:44:02,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:02,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:02,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:02,224 INFO L87 Difference]: Start difference. First operand 47027 states and 90969 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:44:06,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:44:06,386 INFO L93 Difference]: Finished difference Result 154887 states and 325330 transitions. [2024-11-18 15:44:06,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:44:06,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:44:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:44:07,374 INFO L225 Difference]: With dead ends: 154887 [2024-11-18 15:44:07,374 INFO L226 Difference]: Without dead ends: 109997 [2024-11-18 15:44:07,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:44:07,528 INFO L432 NwaCegarLoop]: 4402 mSDtfsCounter, 4699 mSDsluCounter, 13241 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 17643 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:44:07,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4720 Valid, 17643 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:44:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109997 states. [2024-11-18 15:44:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109997 to 104613. [2024-11-18 15:44:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104613 states, 93178 states have (on average 1.6791731953894695) internal successors, (156462), 99486 states have internal predecessors, (156462), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 7842 states have return successors, (69638), 3846 states have call predecessors, (69638), 3591 states have call successors, (69638) [2024-11-18 15:44:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104613 states to 104613 states and 229691 transitions. [2024-11-18 15:44:16,853 INFO L78 Accepts]: Start accepts. Automaton has 104613 states and 229691 transitions. Word has length 112 [2024-11-18 15:44:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:16,854 INFO L471 AbstractCegarLoop]: Abstraction has 104613 states and 229691 transitions. [2024-11-18 15:44:16,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:44:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 104613 states and 229691 transitions. [2024-11-18 15:44:16,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:44:16,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:44:16,915 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:44:16,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:44:16,916 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:44:16,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:44:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 637066595, now seen corresponding path program 1 times [2024-11-18 15:44:16,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:44:16,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390951086] [2024-11-18 15:44:16,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:44:16,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:44:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:44:17,050 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 15:44:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:44:17,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390951086] [2024-11-18 15:44:17,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390951086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:44:17,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:44:17,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:44:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306926068] [2024-11-18 15:44:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:44:17,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:44:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:44:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:44:17,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:44:17,053 INFO L87 Difference]: Start difference. First operand 104613 states and 229691 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)