./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd6b20844e2c749d2220243ee5decb4640d1db1a76545071f1578ab9a21c944c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:35:13,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:35:13,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:35:13,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:35:13,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:35:13,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:35:13,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:35:13,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:35:13,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:35:13,265 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:35:13,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:35:13,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:35:13,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:35:13,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:35:13,268 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:35:13,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:35:13,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:35:13,269 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:35:13,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:35:13,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:35:13,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:35:13,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:35:13,274 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:35:13,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:35:13,275 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:35:13,275 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:35:13,275 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:35:13,276 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:35:13,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:35:13,276 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:35:13,276 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:35:13,277 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:35:13,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:35:13,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:35:13,277 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:35:13,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:35:13,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:35:13,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:35:13,278 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:35:13,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:35:13,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:35:13,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:35:13,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd6b20844e2c749d2220243ee5decb4640d1db1a76545071f1578ab9a21c944c [2024-11-18 15:35:13,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:35:13,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:35:13,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:35:13,586 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:35:13,586 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:35:13,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c [2024-11-18 15:35:14,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:35:15,716 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:35:15,717 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c [2024-11-18 15:35:15,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211038773/060beb7fdf8e4235a74cb36d341dc3bf/FLAG3e97bb4e7 [2024-11-18 15:35:15,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211038773/060beb7fdf8e4235a74cb36d341dc3bf [2024-11-18 15:35:15,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:35:15,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:35:15,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:35:15,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:35:15,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:35:15,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:35:15" (1/1) ... [2024-11-18 15:35:15,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec3489b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:15, skipping insertion in model container [2024-11-18 15:35:15,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:35:15" (1/1) ... [2024-11-18 15:35:16,004 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:35:18,086 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c[381679,381692] [2024-11-18 15:35:18,113 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c[383339,383352] [2024-11-18 15:35:18,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:35:18,385 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:35:19,203 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c[381679,381692] [2024-11-18 15:35:19,209 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c[383339,383352] [2024-11-18 15:35:19,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:35:19,338 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:35:19,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19 WrapperNode [2024-11-18 15:35:19,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:35:19,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:35:19,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:35:19,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:35:19,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:19,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:19,734 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13053 [2024-11-18 15:35:19,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:35:19,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:35:19,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:35:19,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:35:19,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:19,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:19,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:20,025 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 15:35:20,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:20,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:20,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:20,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:20,263 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:20,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:20,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:35:20,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:35:20,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:35:20,505 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:35:20,507 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (1/1) ... [2024-11-18 15:35:20,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:35:20,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:35:20,566 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 15:35:20,588 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 15:35:20,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:35:20,670 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:35:20,671 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:35:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:35:20,671 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:35:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:35:20,671 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:35:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:35:20,672 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:35:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:35:20,672 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:35:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:35:20,672 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:35:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:35:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:35:20,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:35:20,912 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:35:20,914 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:35:28,984 INFO L? ?]: Removed 1737 outVars from TransFormulas that were not future-live. [2024-11-18 15:35:28,985 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:35:29,044 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:35:29,046 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-18 15:35:29,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:35:29 BoogieIcfgContainer [2024-11-18 15:35:29,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:35:29,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:35:29,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:35:29,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:35:29,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:35:15" (1/3) ... [2024-11-18 15:35:29,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4d7f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:35:29, skipping insertion in model container [2024-11-18 15:35:29,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:35:19" (2/3) ... [2024-11-18 15:35:29,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4d7f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:35:29, skipping insertion in model container [2024-11-18 15:35:29,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:35:29" (3/3) ... [2024-11-18 15:35:29,059 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-1.c [2024-11-18 15:35:29,077 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:35:29,078 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:35:29,214 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:35:29,221 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;@2bf0aabf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:35:29,221 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:35:29,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 2500 states, 2468 states have (on average 1.8435980551053484) internal successors, (4550), 2471 states have internal predecessors, (4550), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-18 15:35:29,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:29,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:29,266 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:29,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:29,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2141989661, now seen corresponding path program 1 times [2024-11-18 15:35:29,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:29,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855803628] [2024-11-18 15:35:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:29,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855803628] [2024-11-18 15:35:29,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855803628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:29,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:29,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:35:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491753889] [2024-11-18 15:35:29,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:29,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:35:29,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:29,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:35:29,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:35:29,765 INFO L87 Difference]: Start difference. First operand has 2500 states, 2468 states have (on average 1.8435980551053484) internal successors, (4550), 2471 states have internal predecessors, (4550), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 15:35:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:29,980 INFO L93 Difference]: Finished difference Result 4992 states and 9177 transitions. [2024-11-18 15:35:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:35:29,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:29,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:30,021 INFO L225 Difference]: With dead ends: 4992 [2024-11-18 15:35:30,022 INFO L226 Difference]: Without dead ends: 2433 [2024-11-18 15:35:30,032 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 15:35:30,036 INFO L432 NwaCegarLoop]: 4507 mSDtfsCounter, 478 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 8529 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 15:35:30,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 8529 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:35:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2024-11-18 15:35:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2433. [2024-11-18 15:35:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 2402 states have (on average 1.8288925895087427) internal successors, (4393), 2404 states have internal predecessors, (4393), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-18 15:35:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 4439 transitions. [2024-11-18 15:35:30,209 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 4439 transitions. Word has length 145 [2024-11-18 15:35:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:30,212 INFO L471 AbstractCegarLoop]: Abstraction has 2433 states and 4439 transitions. [2024-11-18 15:35:30,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 15:35:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 4439 transitions. [2024-11-18 15:35:30,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:30,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:30,218 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:30,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:35:30,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:30,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash -535537185, now seen corresponding path program 1 times [2024-11-18 15:35:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:30,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339772606] [2024-11-18 15:35:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:30,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:30,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339772606] [2024-11-18 15:35:30,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339772606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:30,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:30,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:35:30,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377900804] [2024-11-18 15:35:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:30,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:35:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:35:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:35:30,524 INFO L87 Difference]: Start difference. First operand 2433 states and 4439 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 15:35:31,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:31,252 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2024-11-18 15:35:31,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:35:31,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:31,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:31,270 INFO L225 Difference]: With dead ends: 3059 [2024-11-18 15:35:31,271 INFO L226 Difference]: Without dead ends: 2764 [2024-11-18 15:35:31,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:31,276 INFO L432 NwaCegarLoop]: 4333 mSDtfsCounter, 4863 mSDsluCounter, 8872 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4880 SdHoareTripleChecker+Valid, 13205 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:31,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4880 Valid, 13205 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:35:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2024-11-18 15:35:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2741. [2024-11-18 15:35:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2685 states have (on average 1.8011173184357543) internal successors, (4836), 2688 states have internal predecessors, (4836), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2024-11-18 15:35:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4919 transitions. [2024-11-18 15:35:31,366 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4919 transitions. Word has length 145 [2024-11-18 15:35:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:31,366 INFO L471 AbstractCegarLoop]: Abstraction has 2741 states and 4919 transitions. [2024-11-18 15:35:31,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 15:35:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4919 transitions. [2024-11-18 15:35:31,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:31,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:31,374 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:31,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:35:31,375 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:31,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:31,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1207466339, now seen corresponding path program 1 times [2024-11-18 15:35:31,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:31,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112131405] [2024-11-18 15:35:31,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:31,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:31,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:31,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112131405] [2024-11-18 15:35:31,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112131405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:31,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:31,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910130786] [2024-11-18 15:35:31,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:31,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:31,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:31,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:31,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:31,718 INFO L87 Difference]: Start difference. First operand 2741 states and 4919 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:32,555 INFO L93 Difference]: Finished difference Result 3734 states and 6488 transitions. [2024-11-18 15:35:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:32,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:32,577 INFO L225 Difference]: With dead ends: 3734 [2024-11-18 15:35:32,577 INFO L226 Difference]: Without dead ends: 3131 [2024-11-18 15:35:32,582 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 15:35:32,583 INFO L432 NwaCegarLoop]: 4591 mSDtfsCounter, 4867 mSDsluCounter, 13812 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 18403 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:32,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4884 Valid, 18403 Invalid, 913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 15:35:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2024-11-18 15:35:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3028. [2024-11-18 15:35:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3028 states, 2947 states have (on average 1.7770614183915847) internal successors, (5237), 2951 states have internal predecessors, (5237), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (63), 60 states have call predecessors, (63), 59 states have call successors, (63) [2024-11-18 15:35:32,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 5359 transitions. [2024-11-18 15:35:32,687 INFO L78 Accepts]: Start accepts. Automaton has 3028 states and 5359 transitions. Word has length 145 [2024-11-18 15:35:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:32,687 INFO L471 AbstractCegarLoop]: Abstraction has 3028 states and 5359 transitions. [2024-11-18 15:35:32,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3028 states and 5359 transitions. [2024-11-18 15:35:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:32,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:32,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:32,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:35:32,691 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:32,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2140463071, now seen corresponding path program 1 times [2024-11-18 15:35:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:32,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249283477] [2024-11-18 15:35:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:32,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:32,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:32,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249283477] [2024-11-18 15:35:32,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249283477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:32,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:32,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:32,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17414362] [2024-11-18 15:35:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:32,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:32,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:32,895 INFO L87 Difference]: Start difference. First operand 3028 states and 5359 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:33,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:33,717 INFO L93 Difference]: Finished difference Result 4639 states and 7895 transitions. [2024-11-18 15:35:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:33,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:33,738 INFO L225 Difference]: With dead ends: 4639 [2024-11-18 15:35:33,738 INFO L226 Difference]: Without dead ends: 3749 [2024-11-18 15:35:33,744 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 15:35:33,745 INFO L432 NwaCegarLoop]: 4583 mSDtfsCounter, 4859 mSDsluCounter, 13790 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4876 SdHoareTripleChecker+Valid, 18373 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:33,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4876 Valid, 18373 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:35:33,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2024-11-18 15:35:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 3636. [2024-11-18 15:35:33,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 3503 states have (on average 1.741364544675992) internal successors, (6100), 3511 states have internal predecessors, (6100), 95 states have call successors, (95), 30 states have call predecessors, (95), 36 states have return successors, (111), 98 states have call predecessors, (111), 95 states have call successors, (111) [2024-11-18 15:35:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 6306 transitions. [2024-11-18 15:35:33,885 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 6306 transitions. Word has length 145 [2024-11-18 15:35:33,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:33,886 INFO L471 AbstractCegarLoop]: Abstraction has 3636 states and 6306 transitions. [2024-11-18 15:35:33,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 6306 transitions. [2024-11-18 15:35:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:33,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:33,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:33,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:35:33,890 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:33,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash 104095327, now seen corresponding path program 1 times [2024-11-18 15:35:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:33,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970393107] [2024-11-18 15:35:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:33,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:34,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:34,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970393107] [2024-11-18 15:35:34,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970393107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:34,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:34,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539259323] [2024-11-18 15:35:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:34,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:34,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:34,070 INFO L87 Difference]: Start difference. First operand 3636 states and 6306 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:35,077 INFO L93 Difference]: Finished difference Result 6591 states and 10996 transitions. [2024-11-18 15:35:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:35,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:35,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:35,107 INFO L225 Difference]: With dead ends: 6591 [2024-11-18 15:35:35,108 INFO L226 Difference]: Without dead ends: 5093 [2024-11-18 15:35:35,117 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 15:35:35,118 INFO L432 NwaCegarLoop]: 4580 mSDtfsCounter, 4854 mSDsluCounter, 13781 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4871 SdHoareTripleChecker+Valid, 18361 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:35,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4871 Valid, 18361 Invalid, 913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 15:35:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2024-11-18 15:35:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 4951. [2024-11-18 15:35:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4708 states have (on average 1.7000849617672047) internal successors, (8004), 4730 states have internal predecessors, (8004), 167 states have call successors, (167), 54 states have call predecessors, (167), 74 states have return successors, (231), 174 states have call predecessors, (231), 167 states have call successors, (231) [2024-11-18 15:35:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 8402 transitions. [2024-11-18 15:35:35,345 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 8402 transitions. Word has length 145 [2024-11-18 15:35:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:35,346 INFO L471 AbstractCegarLoop]: Abstraction has 4951 states and 8402 transitions. [2024-11-18 15:35:35,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 8402 transitions. [2024-11-18 15:35:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:35,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:35,350 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:35,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:35:35,351 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:35,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash 592142433, now seen corresponding path program 1 times [2024-11-18 15:35:35,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:35,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308092038] [2024-11-18 15:35:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:35,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308092038] [2024-11-18 15:35:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308092038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:35,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:35,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:35,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611041597] [2024-11-18 15:35:35,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:35,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:35,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:35,553 INFO L87 Difference]: Start difference. First operand 4951 states and 8402 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:36,588 INFO L93 Difference]: Finished difference Result 10872 states and 17994 transitions. [2024-11-18 15:35:36,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:36,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:36,634 INFO L225 Difference]: With dead ends: 10872 [2024-11-18 15:35:36,635 INFO L226 Difference]: Without dead ends: 8059 [2024-11-18 15:35:36,650 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 15:35:36,652 INFO L432 NwaCegarLoop]: 4577 mSDtfsCounter, 4849 mSDsluCounter, 13772 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4866 SdHoareTripleChecker+Valid, 18349 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:36,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4866 Valid, 18349 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 15:35:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8059 states. [2024-11-18 15:35:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8059 to 7860. [2024-11-18 15:35:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7860 states, 7379 states have (on average 1.6685187694809596) internal successors, (12312), 7447 states have internal predecessors, (12312), 311 states have call successors, (311), 102 states have call predecessors, (311), 168 states have return successors, (567), 326 states have call predecessors, (567), 311 states have call successors, (567) [2024-11-18 15:35:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7860 states to 7860 states and 13190 transitions. [2024-11-18 15:35:37,042 INFO L78 Accepts]: Start accepts. Automaton has 7860 states and 13190 transitions. Word has length 145 [2024-11-18 15:35:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:37,042 INFO L471 AbstractCegarLoop]: Abstraction has 7860 states and 13190 transitions. [2024-11-18 15:35:37,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7860 states and 13190 transitions. [2024-11-18 15:35:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:37,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:37,049 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:37,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:35:37,050 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:37,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash -500492769, now seen corresponding path program 1 times [2024-11-18 15:35:37,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:37,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232254025] [2024-11-18 15:35:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:37,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:37,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:37,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232254025] [2024-11-18 15:35:37,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232254025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:37,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:37,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:37,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317814713] [2024-11-18 15:35:37,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:37,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:37,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:37,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:37,236 INFO L87 Difference]: Start difference. First operand 7860 states and 13190 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:38,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:38,334 INFO L93 Difference]: Finished difference Result 20491 states and 34356 transitions. [2024-11-18 15:35:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:38,335 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:38,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:38,407 INFO L225 Difference]: With dead ends: 20491 [2024-11-18 15:35:38,407 INFO L226 Difference]: Without dead ends: 14769 [2024-11-18 15:35:38,436 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 15:35:38,437 INFO L432 NwaCegarLoop]: 4355 mSDtfsCounter, 4876 mSDsluCounter, 13239 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 17594 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:38,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4893 Valid, 17594 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:35:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14769 states. [2024-11-18 15:35:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14769 to 14461. [2024-11-18 15:35:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14461 states, 13450 states have (on average 1.6597769516728624) internal successors, (22324), 13664 states have internal predecessors, (22324), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2024-11-18 15:35:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14461 states to 14461 states and 24546 transitions. [2024-11-18 15:35:39,023 INFO L78 Accepts]: Start accepts. Automaton has 14461 states and 24546 transitions. Word has length 145 [2024-11-18 15:35:39,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:39,023 INFO L471 AbstractCegarLoop]: Abstraction has 14461 states and 24546 transitions. [2024-11-18 15:35:39,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 14461 states and 24546 transitions. [2024-11-18 15:35:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:39,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:39,034 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:39,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:35:39,034 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:39,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1782665055, now seen corresponding path program 1 times [2024-11-18 15:35:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:39,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52762055] [2024-11-18 15:35:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:39,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:39,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:39,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52762055] [2024-11-18 15:35:39,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52762055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:39,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:39,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:35:39,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099679369] [2024-11-18 15:35:39,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:39,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:35:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:35:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:35:39,171 INFO L87 Difference]: Start difference. First operand 14461 states and 24546 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:40,036 INFO L93 Difference]: Finished difference Result 30214 states and 52323 transitions. [2024-11-18 15:35:40,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:35:40,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:40,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:40,104 INFO L225 Difference]: With dead ends: 30214 [2024-11-18 15:35:40,104 INFO L226 Difference]: Without dead ends: 17891 [2024-11-18 15:35:40,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:40,161 INFO L432 NwaCegarLoop]: 4310 mSDtfsCounter, 4597 mSDsluCounter, 8495 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 12805 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:40,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4614 Valid, 12805 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:35:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17891 states. [2024-11-18 15:35:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17891 to 14461. [2024-11-18 15:35:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14461 states, 13450 states have (on average 1.6573234200743494) internal successors, (22291), 13664 states have internal predecessors, (22291), 599 states have call successors, (599), 198 states have call predecessors, (599), 410 states have return successors, (1623), 630 states have call predecessors, (1623), 599 states have call successors, (1623) [2024-11-18 15:35:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14461 states to 14461 states and 24513 transitions. [2024-11-18 15:35:40,752 INFO L78 Accepts]: Start accepts. Automaton has 14461 states and 24513 transitions. Word has length 145 [2024-11-18 15:35:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:40,758 INFO L471 AbstractCegarLoop]: Abstraction has 14461 states and 24513 transitions. [2024-11-18 15:35:40,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 14461 states and 24513 transitions. [2024-11-18 15:35:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:40,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:40,783 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:40,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:35:40,783 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:40,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 669826527, now seen corresponding path program 1 times [2024-11-18 15:35:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:40,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496123170] [2024-11-18 15:35:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:40,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:40,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496123170] [2024-11-18 15:35:40,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496123170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:40,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:40,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:40,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961567741] [2024-11-18 15:35:40,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:40,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:40,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:40,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:40,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:40,921 INFO L87 Difference]: Start difference. First operand 14461 states and 24513 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:42,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:42,231 INFO L93 Difference]: Finished difference Result 42408 states and 73587 transitions. [2024-11-18 15:35:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:42,385 INFO L225 Difference]: With dead ends: 42408 [2024-11-18 15:35:42,385 INFO L226 Difference]: Without dead ends: 30085 [2024-11-18 15:35:42,437 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 15:35:42,438 INFO L432 NwaCegarLoop]: 4566 mSDtfsCounter, 4831 mSDsluCounter, 13740 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4848 SdHoareTripleChecker+Valid, 18306 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:42,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4848 Valid, 18306 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:35:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30085 states. [2024-11-18 15:35:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30085 to 29607. [2024-11-18 15:35:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29607 states, 27374 states have (on average 1.668334916343976) internal successors, (45669), 28042 states have internal predecessors, (45669), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 1056 states have return successors, (5271), 1238 states have call predecessors, (5271), 1175 states have call successors, (5271) [2024-11-18 15:35:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29607 states to 29607 states and 52115 transitions. [2024-11-18 15:35:43,944 INFO L78 Accepts]: Start accepts. Automaton has 29607 states and 52115 transitions. Word has length 145 [2024-11-18 15:35:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:43,945 INFO L471 AbstractCegarLoop]: Abstraction has 29607 states and 52115 transitions. [2024-11-18 15:35:43,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 29607 states and 52115 transitions. [2024-11-18 15:35:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:43,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:43,961 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:43,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:35:43,961 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:43,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1052176159, now seen corresponding path program 1 times [2024-11-18 15:35:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:43,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918098262] [2024-11-18 15:35:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:44,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918098262] [2024-11-18 15:35:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918098262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:44,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:44,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:44,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370041162] [2024-11-18 15:35:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:44,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:44,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:44,128 INFO L87 Difference]: Start difference. First operand 29607 states and 52115 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:46,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:46,904 INFO L93 Difference]: Finished difference Result 93784 states and 172923 transitions. [2024-11-18 15:35:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:46,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:46,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:47,451 INFO L225 Difference]: With dead ends: 93784 [2024-11-18 15:35:47,451 INFO L226 Difference]: Without dead ends: 66315 [2024-11-18 15:35:47,526 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 15:35:47,527 INFO L432 NwaCegarLoop]: 4563 mSDtfsCounter, 4826 mSDsluCounter, 13731 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 18294 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:47,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4843 Valid, 18294 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:35:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66315 states. [2024-11-18 15:35:50,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66315 to 65488. [2024-11-18 15:35:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65488 states, 60325 states have (on average 1.6927144633236635) internal successors, (102113), 62387 states have internal predecessors, (102113), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 2834 states have return successors, (18711), 2454 states have call predecessors, (18711), 2327 states have call successors, (18711) [2024-11-18 15:35:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65488 states to 65488 states and 123151 transitions. [2024-11-18 15:35:50,954 INFO L78 Accepts]: Start accepts. Automaton has 65488 states and 123151 transitions. Word has length 145 [2024-11-18 15:35:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:35:50,955 INFO L471 AbstractCegarLoop]: Abstraction has 65488 states and 123151 transitions. [2024-11-18 15:35:50,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 65488 states and 123151 transitions. [2024-11-18 15:35:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:35:50,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:35:50,980 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:35:50,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:35:50,980 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:35:50,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:35:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1384819297, now seen corresponding path program 1 times [2024-11-18 15:35:50,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:35:50,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13007599] [2024-11-18 15:35:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:35:50,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:35:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:35:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:35:51,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:35:51,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13007599] [2024-11-18 15:35:51,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13007599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:35:51,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:35:51,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:35:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901193475] [2024-11-18 15:35:51,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:35:51,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:35:51,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:35:51,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:35:51,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:35:51,460 INFO L87 Difference]: Start difference. First operand 65488 states and 123151 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:35:57,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:35:57,036 INFO L93 Difference]: Finished difference Result 222735 states and 445330 transitions. [2024-11-18 15:35:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:35:57,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2024-11-18 15:35:57,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:35:57,996 INFO L225 Difference]: With dead ends: 222735 [2024-11-18 15:35:57,996 INFO L226 Difference]: Without dead ends: 159385 [2024-11-18 15:35:58,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:35:58,392 INFO L432 NwaCegarLoop]: 4553 mSDtfsCounter, 4900 mSDsluCounter, 13698 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4916 SdHoareTripleChecker+Valid, 18251 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 15:35:58,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4916 Valid, 18251 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 15:35:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159385 states. [2024-11-18 15:36:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159385 to 149348. [2024-11-18 15:36:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149348 states, 136995 states have (on average 1.719237928391547) internal successors, (235527), 143303 states have internal predecessors, (235527), 4503 states have call successors, (4503), 1542 states have call predecessors, (4503), 7848 states have return successors, (70039), 4758 states have call predecessors, (70039), 4503 states have call successors, (70039) [2024-11-18 15:36:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149348 states to 149348 states and 310069 transitions. [2024-11-18 15:36:06,515 INFO L78 Accepts]: Start accepts. Automaton has 149348 states and 310069 transitions. Word has length 145 [2024-11-18 15:36:06,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:06,515 INFO L471 AbstractCegarLoop]: Abstraction has 149348 states and 310069 transitions. [2024-11-18 15:36:06,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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 15:36:06,516 INFO L276 IsEmpty]: Start isEmpty. Operand 149348 states and 310069 transitions. [2024-11-18 15:36:06,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:36:06,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:06,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:36:06,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 15:36:06,578 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:06,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:06,579 INFO L85 PathProgramCache]: Analyzing trace with hash 617066973, now seen corresponding path program 1 times [2024-11-18 15:36:06,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:06,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653217814] [2024-11-18 15:36:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:06,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:06,740 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 15:36:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653217814] [2024-11-18 15:36:06,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653217814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:06,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:06,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:36:06,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250673537] [2024-11-18 15:36:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:06,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:36:06,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:06,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:36:06,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:06,743 INFO L87 Difference]: Start difference. First operand 149348 states and 310069 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 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)