./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9803c0f5a18eedfb3ad16cce49537bdc49a8790d5c61a825350a143730d73381 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:33:13,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:33:13,638 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:33:13,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:33:13,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:33:13,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:33:13,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:33:13,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:33:13,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:33:13,663 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:33:13,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:33:13,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:33:13,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:33:13,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:33:13,665 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:33:13,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:33:13,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:33:13,666 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:33:13,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:33:13,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:33:13,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:33:13,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:33:13,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:33:13,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:33:13,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:33:13,673 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:33:13,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:33:13,673 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:33:13,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:33:13,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:33:13,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:33:13,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:33:13,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:33:13,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:33:13,677 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:33:13,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:33:13,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:33:13,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:33:13,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:33:13,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:33:13,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:33:13,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:33:13,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9803c0f5a18eedfb3ad16cce49537bdc49a8790d5c61a825350a143730d73381 [2024-11-18 15:33:13,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:33:13,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:33:13,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:33:13,955 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:33:13,955 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:33:13,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c [2024-11-18 15:33:15,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:33:16,137 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:33:16,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c [2024-11-18 15:33:16,192 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba6d3ec8/d202fface0694e1f941e9ded6b1f787a/FLAGf830fad75 [2024-11-18 15:33:16,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ba6d3ec8/d202fface0694e1f941e9ded6b1f787a [2024-11-18 15:33:16,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:33:16,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:33:16,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:33:16,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:33:16,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:33:16,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:33:16" (1/1) ... [2024-11-18 15:33:16,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce76af8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:16, skipping insertion in model container [2024-11-18 15:33:16,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:33:16" (1/1) ... [2024-11-18 15:33:16,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:33:18,383 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_label42+token_ring.08.cil-2.c[378560,378573] [2024-11-18 15:33:18,415 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_label42+token_ring.08.cil-2.c[383339,383352] [2024-11-18 15:33:18,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:33:18,725 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:33:19,618 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_label42+token_ring.08.cil-2.c[378560,378573] [2024-11-18 15:33:19,626 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_label42+token_ring.08.cil-2.c[383339,383352] [2024-11-18 15:33:19,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:33:19,719 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:33:19,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19 WrapperNode [2024-11-18 15:33:19,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:33:19,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:33:19,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:33:19,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:33:19,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:19,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,111 INFO L138 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12999 [2024-11-18 15:33:20,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:33:20,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:33:20,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:33:20,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:33:20,126 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,498 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 15:33:20,499 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:33:20,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:33:20,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:33:20,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:33:20,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (1/1) ... [2024-11-18 15:33:20,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:33:21,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:33:21,042 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 15:33:21,061 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 15:33:21,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:33:21,164 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:33:21,164 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:33:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:33:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:33:21,167 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:33:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:33:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 15:33:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 15:33:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:33:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:33:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:33:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:33:21,168 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:33:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:33:21,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:33:21,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:33:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:33:21,332 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:33:21,338 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:33:29,198 INFO L? ?]: Removed 1735 outVars from TransFormulas that were not future-live. [2024-11-18 15:33:29,199 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:33:29,262 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:33:29,263 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-18 15:33:29,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:33:29 BoogieIcfgContainer [2024-11-18 15:33:29,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:33:29,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:33:29,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:33:29,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:33:29,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:33:16" (1/3) ... [2024-11-18 15:33:29,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433fac2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:33:29, skipping insertion in model container [2024-11-18 15:33:29,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:19" (2/3) ... [2024-11-18 15:33:29,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433fac2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:33:29, skipping insertion in model container [2024-11-18 15:33:29,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:33:29" (3/3) ... [2024-11-18 15:33:29,275 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.08.cil-2.c [2024-11-18 15:33:29,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:33:29,292 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:33:29,423 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:33:29,429 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;@75246468, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:33:29,429 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:33:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 2482 states, 2448 states have (on average 1.8455882352941178) internal successors, (4518), 2453 states have internal predecessors, (4518), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 15:33:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:29,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:29,460 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] [2024-11-18 15:33:29,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:29,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1791270743, now seen corresponding path program 1 times [2024-11-18 15:33:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669462449] [2024-11-18 15:33:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:29,993 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 15:33:29,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:29,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669462449] [2024-11-18 15:33:29,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669462449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:29,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:29,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:33:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581343081] [2024-11-18 15:33:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:30,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:33:30,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:33:30,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:33:30,042 INFO L87 Difference]: Start difference. First operand has 2482 states, 2448 states have (on average 1.8455882352941178) internal successors, (4518), 2453 states have internal predecessors, (4518), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:30,221 INFO L93 Difference]: Finished difference Result 4957 states and 9121 transitions. [2024-11-18 15:33:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:33:30,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:30,258 INFO L225 Difference]: With dead ends: 4957 [2024-11-18 15:33:30,258 INFO L226 Difference]: Without dead ends: 2414 [2024-11-18 15:33:30,269 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 15:33:30,274 INFO L432 NwaCegarLoop]: 4477 mSDtfsCounter, 450 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 8499 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 15:33:30,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 8499 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:33:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2024-11-18 15:33:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 2414. [2024-11-18 15:33:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2382 states have (on average 1.8316540722082284) internal successors, (4363), 2385 states have internal predecessors, (4363), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-18 15:33:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 4409 transitions. [2024-11-18 15:33:30,423 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 4409 transitions. Word has length 135 [2024-11-18 15:33:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:30,425 INFO L471 AbstractCegarLoop]: Abstraction has 2414 states and 4409 transitions. [2024-11-18 15:33:30,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 4409 transitions. [2024-11-18 15:33:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:30,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:30,430 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] [2024-11-18 15:33:30,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:33:30,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:30,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:30,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1361612437, now seen corresponding path program 1 times [2024-11-18 15:33:30,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:30,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704073596] [2024-11-18 15:33:30,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:30,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:30,712 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 15:33:30,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:30,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704073596] [2024-11-18 15:33:30,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704073596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:30,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:30,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:33:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457594133] [2024-11-18 15:33:30,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:30,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:33:30,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:30,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:33:30,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:33:30,719 INFO L87 Difference]: Start difference. First operand 2414 states and 4409 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:31,407 INFO L93 Difference]: Finished difference Result 3000 states and 5325 transitions. [2024-11-18 15:33:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:33:31,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:31,425 INFO L225 Difference]: With dead ends: 3000 [2024-11-18 15:33:31,425 INFO L226 Difference]: Without dead ends: 2723 [2024-11-18 15:33:31,428 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 15:33:31,429 INFO L432 NwaCegarLoop]: 4311 mSDtfsCounter, 4791 mSDsluCounter, 8814 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4807 SdHoareTripleChecker+Valid, 13125 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:31,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4807 Valid, 13125 Invalid, 525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:33:31,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2024-11-18 15:33:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2700. [2024-11-18 15:33:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2644 states have (on average 1.8055975794251136) internal successors, (4774), 2648 states have internal predecessors, (4774), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2024-11-18 15:33:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 4855 transitions. [2024-11-18 15:33:31,517 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 4855 transitions. Word has length 135 [2024-11-18 15:33:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:31,517 INFO L471 AbstractCegarLoop]: Abstraction has 2700 states and 4855 transitions. [2024-11-18 15:33:31,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 4855 transitions. [2024-11-18 15:33:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:31,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:31,520 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] [2024-11-18 15:33:31,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:33:31,521 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:31,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:31,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1571352423, now seen corresponding path program 1 times [2024-11-18 15:33:31,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:31,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687197060] [2024-11-18 15:33:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:31,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:31,746 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 15:33:31,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:31,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687197060] [2024-11-18 15:33:31,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687197060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:31,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:31,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088144829] [2024-11-18 15:33:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:31,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:31,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:31,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:31,751 INFO L87 Difference]: Start difference. First operand 2700 states and 4855 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:32,524 INFO L93 Difference]: Finished difference Result 3625 states and 6314 transitions. [2024-11-18 15:33:32,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:32,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:32,540 INFO L225 Difference]: With dead ends: 3625 [2024-11-18 15:33:32,540 INFO L226 Difference]: Without dead ends: 3062 [2024-11-18 15:33:32,544 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 15:33:32,546 INFO L432 NwaCegarLoop]: 4556 mSDtfsCounter, 4792 mSDsluCounter, 13696 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4808 SdHoareTripleChecker+Valid, 18252 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:32,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4808 Valid, 18252 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2024-11-18 15:33:32,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2967. [2024-11-18 15:33:32,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2887 states have (on average 1.7828195358503638) internal successors, (5147), 2892 states have internal predecessors, (5147), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (60), 57 states have call predecessors, (60), 56 states have call successors, (60) [2024-11-18 15:33:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 5265 transitions. [2024-11-18 15:33:32,726 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 5265 transitions. Word has length 135 [2024-11-18 15:33:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:32,726 INFO L471 AbstractCegarLoop]: Abstraction has 2967 states and 5265 transitions. [2024-11-18 15:33:32,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 5265 transitions. [2024-11-18 15:33:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:32,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:32,729 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] [2024-11-18 15:33:32,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:33:32,730 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:32,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash -794682647, now seen corresponding path program 1 times [2024-11-18 15:33:32,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589153234] [2024-11-18 15:33:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:32,880 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 15:33:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589153234] [2024-11-18 15:33:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589153234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:32,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499420964] [2024-11-18 15:33:32,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:32,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:32,886 INFO L87 Difference]: Start difference. First operand 2967 states and 5265 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:33,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:33,579 INFO L93 Difference]: Finished difference Result 4472 states and 7635 transitions. [2024-11-18 15:33:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:33,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:33,598 INFO L225 Difference]: With dead ends: 4472 [2024-11-18 15:33:33,598 INFO L226 Difference]: Without dead ends: 3642 [2024-11-18 15:33:33,603 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 15:33:33,604 INFO L432 NwaCegarLoop]: 4337 mSDtfsCounter, 4812 mSDsluCounter, 13170 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4828 SdHoareTripleChecker+Valid, 17507 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:33,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4828 Valid, 17507 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:33:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2024-11-18 15:33:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 3534. [2024-11-18 15:33:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3534 states, 3404 states have (on average 1.7485311398354877) internal successors, (5952), 3413 states have internal predecessors, (5952), 92 states have call successors, (92), 31 states have call predecessors, (92), 36 states have return successors, (106), 93 states have call predecessors, (106), 90 states have call successors, (106) [2024-11-18 15:33:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3534 states to 3534 states and 6150 transitions. [2024-11-18 15:33:33,728 INFO L78 Accepts]: Start accepts. Automaton has 3534 states and 6150 transitions. Word has length 135 [2024-11-18 15:33:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:33,729 INFO L471 AbstractCegarLoop]: Abstraction has 3534 states and 6150 transitions. [2024-11-18 15:33:33,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 3534 states and 6150 transitions. [2024-11-18 15:33:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:33,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:33,731 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] [2024-11-18 15:33:33,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:33:33,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:33,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1207203623, now seen corresponding path program 1 times [2024-11-18 15:33:33,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:33,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891603190] [2024-11-18 15:33:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:33,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:33,906 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 15:33:33,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:33,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891603190] [2024-11-18 15:33:33,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891603190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:33,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:33,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:33,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707121377] [2024-11-18 15:33:33,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:33,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:33,911 INFO L87 Difference]: Start difference. First operand 3534 states and 6150 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:34,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:34,732 INFO L93 Difference]: Finished difference Result 6293 states and 10534 transitions. [2024-11-18 15:33:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:34,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:34,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:34,755 INFO L225 Difference]: With dead ends: 6293 [2024-11-18 15:33:34,755 INFO L226 Difference]: Without dead ends: 4896 [2024-11-18 15:33:34,763 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 15:33:34,764 INFO L432 NwaCegarLoop]: 4549 mSDtfsCounter, 4782 mSDsluCounter, 13675 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4798 SdHoareTripleChecker+Valid, 18224 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:34,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4798 Valid, 18224 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. [2024-11-18 15:33:35,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 4761. [2024-11-18 15:33:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4761 states, 4525 states have (on average 1.7078453038674033) internal successors, (7728), 4548 states have internal predecessors, (7728), 160 states have call successors, (160), 55 states have call predecessors, (160), 74 states have return successors, (222), 165 states have call predecessors, (222), 158 states have call successors, (222) [2024-11-18 15:33:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 8110 transitions. [2024-11-18 15:33:35,057 INFO L78 Accepts]: Start accepts. Automaton has 4761 states and 8110 transitions. Word has length 135 [2024-11-18 15:33:35,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:35,057 INFO L471 AbstractCegarLoop]: Abstraction has 4761 states and 8110 transitions. [2024-11-18 15:33:35,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4761 states and 8110 transitions. [2024-11-18 15:33:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:35,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:35,062 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] [2024-11-18 15:33:35,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:33:35,062 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:35,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1360618711, now seen corresponding path program 1 times [2024-11-18 15:33:35,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:35,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179041164] [2024-11-18 15:33:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:35,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:35,244 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 15:33:35,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:35,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179041164] [2024-11-18 15:33:35,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179041164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:35,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:35,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:35,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451365244] [2024-11-18 15:33:35,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:35,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:35,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:35,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:35,251 INFO L87 Difference]: Start difference. First operand 4761 states and 8110 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:36,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:36,247 INFO L93 Difference]: Finished difference Result 10250 states and 17004 transitions. [2024-11-18 15:33:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:36,303 INFO L225 Difference]: With dead ends: 10250 [2024-11-18 15:33:36,304 INFO L226 Difference]: Without dead ends: 7626 [2024-11-18 15:33:36,319 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 15:33:36,322 INFO L432 NwaCegarLoop]: 4542 mSDtfsCounter, 4774 mSDsluCounter, 13656 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4790 SdHoareTripleChecker+Valid, 18198 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:36,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4790 Valid, 18198 Invalid, 863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7626 states. [2024-11-18 15:33:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7626 to 7449. [2024-11-18 15:33:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7449 states, 6983 states have (on average 1.6740655878562223) internal successors, (11690), 7052 states have internal predecessors, (11690), 296 states have call successors, (296), 103 states have call predecessors, (296), 168 states have return successors, (550), 309 states have call predecessors, (550), 294 states have call successors, (550) [2024-11-18 15:33:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7449 states to 7449 states and 12536 transitions. [2024-11-18 15:33:36,684 INFO L78 Accepts]: Start accepts. Automaton has 7449 states and 12536 transitions. Word has length 135 [2024-11-18 15:33:36,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:36,685 INFO L471 AbstractCegarLoop]: Abstraction has 7449 states and 12536 transitions. [2024-11-18 15:33:36,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:36,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7449 states and 12536 transitions. [2024-11-18 15:33:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:36,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:36,692 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] [2024-11-18 15:33:36,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:33:36,692 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:36,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:36,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1286985643, now seen corresponding path program 1 times [2024-11-18 15:33:36,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:36,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077918395] [2024-11-18 15:33:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:36,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:36,900 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 15:33:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077918395] [2024-11-18 15:33:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077918395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:36,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:36,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878041425] [2024-11-18 15:33:36,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:36,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:36,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:36,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:36,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:36,904 INFO L87 Difference]: Start difference. First operand 7449 states and 12536 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:37,835 INFO L93 Difference]: Finished difference Result 19082 states and 32032 transitions. [2024-11-18 15:33:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:37,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:37,905 INFO L225 Difference]: With dead ends: 19082 [2024-11-18 15:33:37,906 INFO L226 Difference]: Without dead ends: 13770 [2024-11-18 15:33:37,933 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 15:33:37,936 INFO L432 NwaCegarLoop]: 4539 mSDtfsCounter, 4769 mSDsluCounter, 13647 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4785 SdHoareTripleChecker+Valid, 18186 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:37,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4785 Valid, 18186 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13770 states. [2024-11-18 15:33:38,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13770 to 13500. [2024-11-18 15:33:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13500 states, 12520 states have (on average 1.6608626198083067) internal successors, (20794), 12735 states have internal predecessors, (20794), 568 states have call successors, (568), 199 states have call predecessors, (568), 410 states have return successors, (1590), 597 states have call predecessors, (1590), 566 states have call successors, (1590) [2024-11-18 15:33:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13500 states to 13500 states and 22952 transitions. [2024-11-18 15:33:38,599 INFO L78 Accepts]: Start accepts. Automaton has 13500 states and 22952 transitions. Word has length 135 [2024-11-18 15:33:38,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:38,600 INFO L471 AbstractCegarLoop]: Abstraction has 13500 states and 22952 transitions. [2024-11-18 15:33:38,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:38,601 INFO L276 IsEmpty]: Start isEmpty. Operand 13500 states and 22952 transitions. [2024-11-18 15:33:38,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:38,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:38,609 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] [2024-11-18 15:33:38,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:33:38,611 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:38,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash -844365079, now seen corresponding path program 1 times [2024-11-18 15:33:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:38,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234045463] [2024-11-18 15:33:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:38,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:38,718 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 15:33:38,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:38,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234045463] [2024-11-18 15:33:38,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234045463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:38,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:38,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:33:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060294183] [2024-11-18 15:33:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:38,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:33:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:33:38,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:33:38,721 INFO L87 Difference]: Start difference. First operand 13500 states and 22952 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:39,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:39,425 INFO L93 Difference]: Finished difference Result 27803 states and 48157 transitions. [2024-11-18 15:33:39,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:33:39,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:39,499 INFO L225 Difference]: With dead ends: 27803 [2024-11-18 15:33:39,500 INFO L226 Difference]: Without dead ends: 16440 [2024-11-18 15:33:39,550 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 15:33:39,552 INFO L432 NwaCegarLoop]: 4288 mSDtfsCounter, 4550 mSDsluCounter, 8457 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4566 SdHoareTripleChecker+Valid, 12745 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:39,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4566 Valid, 12745 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:33:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2024-11-18 15:33:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 13500. [2024-11-18 15:33:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13500 states, 12520 states have (on average 1.658226837060703) internal successors, (20761), 12735 states have internal predecessors, (20761), 568 states have call successors, (568), 199 states have call predecessors, (568), 410 states have return successors, (1590), 597 states have call predecessors, (1590), 566 states have call successors, (1590) [2024-11-18 15:33:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13500 states to 13500 states and 22919 transitions. [2024-11-18 15:33:40,272 INFO L78 Accepts]: Start accepts. Automaton has 13500 states and 22919 transitions. Word has length 135 [2024-11-18 15:33:40,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:40,273 INFO L471 AbstractCegarLoop]: Abstraction has 13500 states and 22919 transitions. [2024-11-18 15:33:40,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13500 states and 22919 transitions. [2024-11-18 15:33:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:40,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:40,282 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] [2024-11-18 15:33:40,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:33:40,283 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:40,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:40,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1882949653, now seen corresponding path program 1 times [2024-11-18 15:33:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:40,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243312350] [2024-11-18 15:33:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:40,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:40,420 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 15:33:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:40,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243312350] [2024-11-18 15:33:40,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243312350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826151682] [2024-11-18 15:33:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:40,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:40,423 INFO L87 Difference]: Start difference. First operand 13500 states and 22919 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:41,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:41,874 INFO L93 Difference]: Finished difference Result 38993 states and 67731 transitions. [2024-11-18 15:33:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:41,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:41,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:41,999 INFO L225 Difference]: With dead ends: 38993 [2024-11-18 15:33:41,999 INFO L226 Difference]: Without dead ends: 27630 [2024-11-18 15:33:42,045 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 15:33:42,046 INFO L432 NwaCegarLoop]: 4531 mSDtfsCounter, 4756 mSDsluCounter, 13624 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 18155 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:42,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4772 Valid, 18155 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27630 states. [2024-11-18 15:33:43,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27630 to 27222. [2024-11-18 15:33:43,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27222 states, 25052 states have (on average 1.6635398371387513) internal successors, (41675), 25721 states have internal predecessors, (41675), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 1056 states have return successors, (5206), 1173 states have call predecessors, (5206), 1110 states have call successors, (5206) [2024-11-18 15:33:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27222 states to 27222 states and 47993 transitions. [2024-11-18 15:33:43,531 INFO L78 Accepts]: Start accepts. Automaton has 27222 states and 47993 transitions. Word has length 135 [2024-11-18 15:33:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:43,532 INFO L471 AbstractCegarLoop]: Abstraction has 27222 states and 47993 transitions. [2024-11-18 15:33:43,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 27222 states and 47993 transitions. [2024-11-18 15:33:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:43,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:43,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:43,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:33:43,546 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:43,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:43,550 INFO L85 PathProgramCache]: Analyzing trace with hash 438852265, now seen corresponding path program 1 times [2024-11-18 15:33:43,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:43,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877691053] [2024-11-18 15:33:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:43,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:43,677 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 15:33:43,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:43,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877691053] [2024-11-18 15:33:43,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877691053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:43,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:43,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:43,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591235607] [2024-11-18 15:33:43,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:43,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:43,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:43,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:43,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:43,680 INFO L87 Difference]: Start difference. First operand 27222 states and 47993 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:46,415 INFO L93 Difference]: Finished difference Result 88965 states and 163364 transitions. [2024-11-18 15:33:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:46,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:46,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:46,799 INFO L225 Difference]: With dead ends: 88965 [2024-11-18 15:33:46,800 INFO L226 Difference]: Without dead ends: 63880 [2024-11-18 15:33:46,914 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 15:33:46,915 INFO L432 NwaCegarLoop]: 4526 mSDtfsCounter, 5005 mSDsluCounter, 13604 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5030 SdHoareTripleChecker+Valid, 18130 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:46,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5030 Valid, 18130 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:46,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63880 states. [2024-11-18 15:33:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63880 to 59091. [2024-11-18 15:33:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59091 states, 54119 states have (on average 1.6836785602099078) internal successors, (91119), 56182 states have internal predecessors, (91119), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 2834 states have return successors, (18518), 2261 states have call predecessors, (18518), 2134 states have call successors, (18518) [2024-11-18 15:33:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59091 states to 59091 states and 111773 transitions. [2024-11-18 15:33:50,724 INFO L78 Accepts]: Start accepts. Automaton has 59091 states and 111773 transitions. Word has length 135 [2024-11-18 15:33:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:50,724 INFO L471 AbstractCegarLoop]: Abstraction has 59091 states and 111773 transitions. [2024-11-18 15:33:50,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 59091 states and 111773 transitions. [2024-11-18 15:33:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:33:50,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:50,752 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] [2024-11-18 15:33:50,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 15:33:50,753 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:50,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:50,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1703008213, now seen corresponding path program 1 times [2024-11-18 15:33:50,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219725599] [2024-11-18 15:33:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:50,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:50,885 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 15:33:50,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:50,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219725599] [2024-11-18 15:33:50,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219725599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:50,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:50,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:50,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088264871] [2024-11-18 15:33:50,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:50,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:50,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:50,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:50,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:50,889 INFO L87 Difference]: Start difference. First operand 59091 states and 111773 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:56,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:56,042 INFO L93 Difference]: Finished difference Result 200354 states and 405126 transitions. [2024-11-18 15:33:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:56,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-18 15:33:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:56,954 INFO L225 Difference]: With dead ends: 200354 [2024-11-18 15:33:56,955 INFO L226 Difference]: Without dead ends: 143400 [2024-11-18 15:33:57,369 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 15:33:57,370 INFO L432 NwaCegarLoop]: 4337 mSDtfsCounter, 4854 mSDsluCounter, 13136 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4869 SdHoareTripleChecker+Valid, 17473 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:57,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4869 Valid, 17473 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143400 states. [2024-11-18 15:34:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143400 to 133750. [2024-11-18 15:34:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133750 states, 121780 states have (on average 1.7073657415010675) internal successors, (207923), 128089 states have internal predecessors, (207923), 4120 states have call successors, (4120), 1543 states have call predecessors, (4120), 7848 states have return successors, (69654), 4373 states have call predecessors, (69654), 4118 states have call successors, (69654) [2024-11-18 15:34:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133750 states to 133750 states and 281697 transitions. [2024-11-18 15:34:06,224 INFO L78 Accepts]: Start accepts. Automaton has 133750 states and 281697 transitions. Word has length 135 [2024-11-18 15:34:06,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:34:06,225 INFO L471 AbstractCegarLoop]: Abstraction has 133750 states and 281697 transitions. [2024-11-18 15:34:06,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:34:06,225 INFO L276 IsEmpty]: Start isEmpty. Operand 133750 states and 281697 transitions. [2024-11-18 15:34:06,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-18 15:34:06,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:34:06,268 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] [2024-11-18 15:34:06,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 15:34:06,268 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:34:06,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:34:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1968677481, now seen corresponding path program 1 times [2024-11-18 15:34:06,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:34:06,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672550209] [2024-11-18 15:34:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:34:06,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:34:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:34:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:34:06,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:34:06,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672550209] [2024-11-18 15:34:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672550209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:34:06,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:34:06,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:34:06,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271659797] [2024-11-18 15:34:06,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:34:06,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:34:06,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:34:06,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:34:06,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:34:06,394 INFO L87 Difference]: Start difference. First operand 133750 states and 281697 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)