./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.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 87df5a94129a3baa1e2e3650ee6bffcda9607641da2006311f5769f81726e25d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:15:53,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:15:53,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:15:53,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:15:53,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:15:53,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:15:53,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:15:53,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:15:53,175 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:15:53,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:15:53,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:15:53,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:15:53,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:15:53,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:15:53,180 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:15:53,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:15:53,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:15:53,181 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:15:53,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:15:53,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:15:53,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:15:53,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:15:53,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:15:53,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:15:53,185 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:15:53,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:15:53,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:15:53,186 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:15:53,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:15:53,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:15:53,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:15:53,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:15:53,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:15:53,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:15:53,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:15:53,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:15:53,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:15:53,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:15:53,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:15:53,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:15:53,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:15:53,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:15:53,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87df5a94129a3baa1e2e3650ee6bffcda9607641da2006311f5769f81726e25d [2024-10-24 02:15:53,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:15:53,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:15:53,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:15:53,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:15:53,540 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:15:53,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c [2024-10-24 02:15:55,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:15:55,764 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:15:55,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c [2024-10-24 02:15:55,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c72a84fa/385853f41be74d6eb628282f833e3bff/FLAG32096d82b [2024-10-24 02:15:55,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c72a84fa/385853f41be74d6eb628282f833e3bff [2024-10-24 02:15:55,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:15:55,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:15:55,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:15:55,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:15:55,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:15:55,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:15:55" (1/1) ... [2024-10-24 02:15:55,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3329c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:55, skipping insertion in model container [2024-10-24 02:15:55,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:15:55" (1/1) ... [2024-10-24 02:15:56,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:15:57,826 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[381679,381692] [2024-10-24 02:15:57,853 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[383339,383352] [2024-10-24 02:15:58,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:15:58,139 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:15:58,942 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[381679,381692] [2024-10-24 02:15:58,948 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[383339,383352] [2024-10-24 02:15:58,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:15:59,052 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:15:59,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59 WrapperNode [2024-10-24 02:15:59,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:15:59,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:15:59,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:15:59,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:15:59,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:15:59,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:15:59,588 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13113 [2024-10-24 02:15:59,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:15:59,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:15:59,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:15:59,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:15:59,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:15:59,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:15:59,799 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:15:59,889 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]. [2024-10-24 02:15:59,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:15:59,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:16:00,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:16:00,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:16:00,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:16:00,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:16:00,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:16:00,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:16:00,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:16:00,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:16:00,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (1/1) ... [2024-10-24 02:16:00,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:16:00,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:16:00,309 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) [2024-10-24 02:16:00,313 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 [2024-10-24 02:16:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:16:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-24 02:16:00,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-24 02:16:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 02:16:00,365 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 02:16:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-24 02:16:00,365 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-24 02:16:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-24 02:16:00,365 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-24 02:16:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-24 02:16:00,366 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-24 02:16:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-24 02:16:00,366 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-24 02:16:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:16:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:16:00,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:16:00,540 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:16:00,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:16:08,631 INFO L? ?]: Removed 1743 outVars from TransFormulas that were not future-live. [2024-10-24 02:16:08,631 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:16:08,769 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:16:08,769 INFO L314 CfgBuilder]: Removed 14 assume(true) statements. [2024-10-24 02:16:08,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:08 BoogieIcfgContainer [2024-10-24 02:16:08,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:16:08,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:16:08,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:16:08,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:16:08,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:15:55" (1/3) ... [2024-10-24 02:16:08,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22871cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:08, skipping insertion in model container [2024-10-24 02:16:08,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:15:59" (2/3) ... [2024-10-24 02:16:08,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22871cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:08, skipping insertion in model container [2024-10-24 02:16:08,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:08" (3/3) ... [2024-10-24 02:16:08,779 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.10.cil-2.c [2024-10-24 02:16:08,797 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:16:08,797 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:16:08,926 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:16:08,933 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;@1d738b0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:16:08,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:16:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 2425 states, 2392 states have (on average 1.8775083612040133) internal successors, (4491), 2395 states have internal predecessors, (4491), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-24 02:16:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:08,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:08,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:08,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:08,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1836165759, now seen corresponding path program 1 times [2024-10-24 02:16:08,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:08,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951941722] [2024-10-24 02:16:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:09,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:09,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:09,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:09,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:09,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:09,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951941722] [2024-10-24 02:16:09,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951941722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:09,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:09,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:16:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855788396] [2024-10-24 02:16:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:09,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:16:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:09,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:16:09,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:16:09,739 INFO L87 Difference]: Start difference. First operand has 2425 states, 2392 states have (on average 1.8775083612040133) internal successors, (4491), 2395 states have internal predecessors, (4491), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:11,589 INFO L93 Difference]: Finished difference Result 4952 states and 9258 transitions. [2024-10-24 02:16:11,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:16:11,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:11,629 INFO L225 Difference]: With dead ends: 4952 [2024-10-24 02:16:11,630 INFO L226 Difference]: Without dead ends: 2531 [2024-10-24 02:16:11,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:16:11,646 INFO L432 NwaCegarLoop]: 4219 mSDtfsCounter, 837 mSDsluCounter, 12160 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 16379 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:11,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 16379 Invalid, 963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 02:16:11,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2024-10-24 02:16:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2421. [2024-10-24 02:16:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8396818752616158) internal successors, (4395), 2391 states have internal predecessors, (4395), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-24 02:16:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4443 transitions. [2024-10-24 02:16:11,809 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4443 transitions. Word has length 141 [2024-10-24 02:16:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:11,810 INFO L471 AbstractCegarLoop]: Abstraction has 2421 states and 4443 transitions. [2024-10-24 02:16:11,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4443 transitions. [2024-10-24 02:16:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:11,820 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:11,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:11,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:16:11,820 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:11,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:11,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1161005633, now seen corresponding path program 1 times [2024-10-24 02:16:11,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:11,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759071430] [2024-10-24 02:16:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:11,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:12,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:12,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:12,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:12,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:12,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:12,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759071430] [2024-10-24 02:16:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759071430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:12,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:12,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448797613] [2024-10-24 02:16:12,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:12,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:12,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:12,251 INFO L87 Difference]: Start difference. First operand 2421 states and 4443 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:16,372 INFO L93 Difference]: Finished difference Result 3245 states and 5826 transitions. [2024-10-24 02:16:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:16:16,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:16,393 INFO L225 Difference]: With dead ends: 3245 [2024-10-24 02:16:16,394 INFO L226 Difference]: Without dead ends: 2961 [2024-10-24 02:16:16,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:16:16,398 INFO L432 NwaCegarLoop]: 4363 mSDtfsCounter, 5163 mSDsluCounter, 17153 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5180 SdHoareTripleChecker+Valid, 21516 SdHoareTripleChecker+Invalid, 3364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:16,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5180 Valid, 21516 Invalid, 3364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-24 02:16:16,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2024-10-24 02:16:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2724. [2024-10-24 02:16:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2663 states have (on average 1.819752159218926) internal successors, (4846), 2667 states have internal predecessors, (4846), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2024-10-24 02:16:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4943 transitions. [2024-10-24 02:16:16,510 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4943 transitions. Word has length 141 [2024-10-24 02:16:16,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:16,511 INFO L471 AbstractCegarLoop]: Abstraction has 2724 states and 4943 transitions. [2024-10-24 02:16:16,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4943 transitions. [2024-10-24 02:16:16,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:16,516 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:16,516 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:16,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:16:16,517 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:16,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1649052739, now seen corresponding path program 1 times [2024-10-24 02:16:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911665496] [2024-10-24 02:16:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:16,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:16,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:16,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:16,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:16,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:16,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:16,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911665496] [2024-10-24 02:16:16,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911665496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:16,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:16,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:16,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793348504] [2024-10-24 02:16:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:16,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:16,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:16,885 INFO L87 Difference]: Start difference. First operand 2724 states and 4943 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:20,110 INFO L93 Difference]: Finished difference Result 4288 states and 7546 transitions. [2024-10-24 02:16:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:16:20,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:20,130 INFO L225 Difference]: With dead ends: 4288 [2024-10-24 02:16:20,130 INFO L226 Difference]: Without dead ends: 3703 [2024-10-24 02:16:20,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:16:20,136 INFO L432 NwaCegarLoop]: 4311 mSDtfsCounter, 5204 mSDsluCounter, 17089 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5221 SdHoareTripleChecker+Valid, 21400 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:20,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5221 Valid, 21400 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-24 02:16:20,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2024-10-24 02:16:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3278. [2024-10-24 02:16:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3165 states have (on average 1.7873617693522907) internal successors, (5657), 3171 states have internal predecessors, (5657), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2024-10-24 02:16:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5840 transitions. [2024-10-24 02:16:20,263 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5840 transitions. Word has length 141 [2024-10-24 02:16:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:20,264 INFO L471 AbstractCegarLoop]: Abstraction has 3278 states and 5840 transitions. [2024-10-24 02:16:20,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5840 transitions. [2024-10-24 02:16:20,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:20,267 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:20,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:20,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:16:20,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:20,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:20,268 INFO L85 PathProgramCache]: Analyzing trace with hash 556417537, now seen corresponding path program 1 times [2024-10-24 02:16:20,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:20,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678427070] [2024-10-24 02:16:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:20,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:20,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:20,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:20,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:20,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:20,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:20,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:20,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678427070] [2024-10-24 02:16:20,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678427070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:20,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:20,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:20,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093837052] [2024-10-24 02:16:20,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:20,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:20,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:20,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:20,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:20,537 INFO L87 Difference]: Start difference. First operand 3278 states and 5840 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:22,027 INFO L93 Difference]: Finished difference Result 4857 states and 8484 transitions. [2024-10-24 02:16:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:16:22,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:22,049 INFO L225 Difference]: With dead ends: 4857 [2024-10-24 02:16:22,049 INFO L226 Difference]: Without dead ends: 3716 [2024-10-24 02:16:22,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:16:22,060 INFO L432 NwaCegarLoop]: 4175 mSDtfsCounter, 5000 mSDsluCounter, 12398 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5018 SdHoareTripleChecker+Valid, 16573 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:22,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5018 Valid, 16573 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 02:16:22,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2024-10-24 02:16:22,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3278. [2024-10-24 02:16:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3165 states have (on average 1.785781990521327) internal successors, (5652), 3171 states have internal predecessors, (5652), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2024-10-24 02:16:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5835 transitions. [2024-10-24 02:16:22,289 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5835 transitions. Word has length 141 [2024-10-24 02:16:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:22,290 INFO L471 AbstractCegarLoop]: Abstraction has 3278 states and 5835 transitions. [2024-10-24 02:16:22,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5835 transitions. [2024-10-24 02:16:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:22,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:22,293 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:22,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:16:22,294 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:22,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash -725754749, now seen corresponding path program 1 times [2024-10-24 02:16:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:22,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543522731] [2024-10-24 02:16:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:22,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:22,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:22,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:22,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:22,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:22,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:22,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543522731] [2024-10-24 02:16:22,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543522731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:22,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:22,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:22,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717710145] [2024-10-24 02:16:22,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:22,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:22,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:22,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:22,617 INFO L87 Difference]: Start difference. First operand 3278 states and 5835 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:23,974 INFO L93 Difference]: Finished difference Result 4853 states and 8463 transitions. [2024-10-24 02:16:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:16:23,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:23,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:23,994 INFO L225 Difference]: With dead ends: 4853 [2024-10-24 02:16:23,994 INFO L226 Difference]: Without dead ends: 3712 [2024-10-24 02:16:24,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:16:24,003 INFO L432 NwaCegarLoop]: 4175 mSDtfsCounter, 4998 mSDsluCounter, 12398 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5016 SdHoareTripleChecker+Valid, 16573 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:24,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5016 Valid, 16573 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 02:16:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2024-10-24 02:16:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3278. [2024-10-24 02:16:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3165 states have (on average 1.7842022116903633) internal successors, (5647), 3171 states have internal predecessors, (5647), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2024-10-24 02:16:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5830 transitions. [2024-10-24 02:16:24,150 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5830 transitions. Word has length 141 [2024-10-24 02:16:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:24,151 INFO L471 AbstractCegarLoop]: Abstraction has 3278 states and 5830 transitions. [2024-10-24 02:16:24,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5830 transitions. [2024-10-24 02:16:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:24,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:24,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:24,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:16:24,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:24,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:24,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1726736833, now seen corresponding path program 1 times [2024-10-24 02:16:24,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:24,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815239455] [2024-10-24 02:16:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:24,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:24,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:24,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:24,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:24,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:24,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:24,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:24,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815239455] [2024-10-24 02:16:24,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815239455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:24,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:24,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134995694] [2024-10-24 02:16:24,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:24,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:24,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:24,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:24,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:24,441 INFO L87 Difference]: Start difference. First operand 3278 states and 5830 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:26,017 INFO L93 Difference]: Finished difference Result 4848 states and 8440 transitions. [2024-10-24 02:16:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:16:26,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:26,034 INFO L225 Difference]: With dead ends: 4848 [2024-10-24 02:16:26,034 INFO L226 Difference]: Without dead ends: 3707 [2024-10-24 02:16:26,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:16:26,041 INFO L432 NwaCegarLoop]: 4175 mSDtfsCounter, 4867 mSDsluCounter, 16496 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4885 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:26,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4885 Valid, 20671 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 02:16:26,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2024-10-24 02:16:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3278. [2024-10-24 02:16:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3165 states have (on average 1.7826224328593996) internal successors, (5642), 3171 states have internal predecessors, (5642), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2024-10-24 02:16:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5825 transitions. [2024-10-24 02:16:26,260 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5825 transitions. Word has length 141 [2024-10-24 02:16:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:26,260 INFO L471 AbstractCegarLoop]: Abstraction has 3278 states and 5825 transitions. [2024-10-24 02:16:26,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:26,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5825 transitions. [2024-10-24 02:16:26,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:26,264 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:26,265 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:26,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:16:26,265 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:26,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash 4734147, now seen corresponding path program 1 times [2024-10-24 02:16:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:26,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64036191] [2024-10-24 02:16:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:26,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:26,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:26,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:26,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:26,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:26,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:26,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64036191] [2024-10-24 02:16:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64036191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:26,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:26,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:26,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318617858] [2024-10-24 02:16:26,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:26,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:26,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:26,613 INFO L87 Difference]: Start difference. First operand 3278 states and 5825 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:30,032 INFO L93 Difference]: Finished difference Result 6307 states and 10801 transitions. [2024-10-24 02:16:30,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:16:30,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:30,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:30,070 INFO L225 Difference]: With dead ends: 6307 [2024-10-24 02:16:30,074 INFO L226 Difference]: Without dead ends: 5168 [2024-10-24 02:16:30,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:16:30,086 INFO L432 NwaCegarLoop]: 4358 mSDtfsCounter, 5154 mSDsluCounter, 17153 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5171 SdHoareTripleChecker+Valid, 21511 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:30,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5171 Valid, 21511 Invalid, 3262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-24 02:16:30,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2024-10-24 02:16:30,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 4397. [2024-10-24 02:16:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 4180 states have (on average 1.7375598086124402) internal successors, (7263), 4190 states have internal predecessors, (7263), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2024-10-24 02:16:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 7624 transitions. [2024-10-24 02:16:30,370 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 7624 transitions. Word has length 141 [2024-10-24 02:16:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:30,372 INFO L471 AbstractCegarLoop]: Abstraction has 4397 states and 7624 transitions. [2024-10-24 02:16:30,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 7624 transitions. [2024-10-24 02:16:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:30,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:30,377 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:30,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:16:30,378 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:30,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash -327908991, now seen corresponding path program 1 times [2024-10-24 02:16:30,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:30,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330748726] [2024-10-24 02:16:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:30,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:30,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:30,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:30,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:30,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:30,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:30,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:30,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330748726] [2024-10-24 02:16:30,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330748726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:30,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:30,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087412286] [2024-10-24 02:16:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:30,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:30,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:30,659 INFO L87 Difference]: Start difference. First operand 4397 states and 7624 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:32,341 INFO L93 Difference]: Finished difference Result 7464 states and 12699 transitions. [2024-10-24 02:16:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:16:32,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:32,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:32,359 INFO L225 Difference]: With dead ends: 7464 [2024-10-24 02:16:32,359 INFO L226 Difference]: Without dead ends: 5204 [2024-10-24 02:16:32,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:16:32,368 INFO L432 NwaCegarLoop]: 4175 mSDtfsCounter, 4871 mSDsluCounter, 16496 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4889 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:32,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4889 Valid, 20671 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 02:16:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2024-10-24 02:16:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 4397. [2024-10-24 02:16:32,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 4180 states have (on average 1.7354066985645933) internal successors, (7254), 4190 states have internal predecessors, (7254), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2024-10-24 02:16:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 7615 transitions. [2024-10-24 02:16:32,553 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 7615 transitions. Word has length 141 [2024-10-24 02:16:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:32,556 INFO L471 AbstractCegarLoop]: Abstraction has 4397 states and 7615 transitions. [2024-10-24 02:16:32,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 7615 transitions. [2024-10-24 02:16:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:32,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:32,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:32,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:16:32,561 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:32,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1601023235, now seen corresponding path program 1 times [2024-10-24 02:16:32,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599195724] [2024-10-24 02:16:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:32,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:32,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:32,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:32,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:32,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:32,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:32,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599195724] [2024-10-24 02:16:32,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599195724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:32,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:32,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:32,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102818643] [2024-10-24 02:16:32,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:32,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:32,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:32,820 INFO L87 Difference]: Start difference. First operand 4397 states and 7615 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:36,075 INFO L93 Difference]: Finished difference Result 10354 states and 17366 transitions. [2024-10-24 02:16:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:16:36,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:36,106 INFO L225 Difference]: With dead ends: 10354 [2024-10-24 02:16:36,106 INFO L226 Difference]: Without dead ends: 8096 [2024-10-24 02:16:36,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:16:36,119 INFO L432 NwaCegarLoop]: 4358 mSDtfsCounter, 5186 mSDsluCounter, 17153 mSDsCounter, 0 mSdLazyCounter, 3078 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 21511 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:36,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5203 Valid, 21511 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3078 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-24 02:16:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2024-10-24 02:16:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 6657. [2024-10-24 02:16:36,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6232 states have (on average 1.6882220795892169) internal successors, (10521), 6250 states have internal predecessors, (10521), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2024-10-24 02:16:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 11256 transitions. [2024-10-24 02:16:36,547 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 11256 transitions. Word has length 141 [2024-10-24 02:16:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:36,547 INFO L471 AbstractCegarLoop]: Abstraction has 6657 states and 11256 transitions. [2024-10-24 02:16:36,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 11256 transitions. [2024-10-24 02:16:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:36,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:36,553 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:36,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:16:36,553 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:36,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash -966799099, now seen corresponding path program 1 times [2024-10-24 02:16:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:36,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952872883] [2024-10-24 02:16:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:36,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:36,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:36,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:36,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:36,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:36,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:36,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:36,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952872883] [2024-10-24 02:16:36,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952872883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:36,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:36,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:36,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219102935] [2024-10-24 02:16:36,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:36,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:36,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:36,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:36,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:36,781 INFO L87 Difference]: Start difference. First operand 6657 states and 11256 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:39,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:39,835 INFO L93 Difference]: Finished difference Result 18478 states and 30647 transitions. [2024-10-24 02:16:39,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:16:39,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:39,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:39,888 INFO L225 Difference]: With dead ends: 18478 [2024-10-24 02:16:39,888 INFO L226 Difference]: Without dead ends: 13960 [2024-10-24 02:16:39,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:16:39,913 INFO L432 NwaCegarLoop]: 4312 mSDtfsCounter, 5212 mSDsluCounter, 17089 mSDsCounter, 0 mSdLazyCounter, 2832 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5229 SdHoareTripleChecker+Valid, 21401 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:39,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5229 Valid, 21401 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2832 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 02:16:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13960 states. [2024-10-24 02:16:40,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13960 to 11193. [2024-10-24 02:16:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11193 states, 10352 states have (on average 1.6498261205564142) internal successors, (17079), 10386 states have internal predecessors, (17079), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2024-10-24 02:16:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11193 states to 11193 states and 18616 transitions. [2024-10-24 02:16:40,594 INFO L78 Accepts]: Start accepts. Automaton has 11193 states and 18616 transitions. Word has length 141 [2024-10-24 02:16:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:40,594 INFO L471 AbstractCegarLoop]: Abstraction has 11193 states and 18616 transitions. [2024-10-24 02:16:40,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 11193 states and 18616 transitions. [2024-10-24 02:16:40,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:40,603 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:40,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:40,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:16:40,603 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:40,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -495442749, now seen corresponding path program 1 times [2024-10-24 02:16:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:40,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892196963] [2024-10-24 02:16:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:40,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:40,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:40,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:40,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:40,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:40,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:40,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:40,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892196963] [2024-10-24 02:16:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892196963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:40,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:40,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938563707] [2024-10-24 02:16:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:40,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:40,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:40,820 INFO L87 Difference]: Start difference. First operand 11193 states and 18616 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:45,441 INFO L93 Difference]: Finished difference Result 38822 states and 64027 transitions. [2024-10-24 02:16:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:16:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:45,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:45,553 INFO L225 Difference]: With dead ends: 38822 [2024-10-24 02:16:45,553 INFO L226 Difference]: Without dead ends: 29768 [2024-10-24 02:16:45,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:16:45,597 INFO L432 NwaCegarLoop]: 4357 mSDtfsCounter, 5552 mSDsluCounter, 17148 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5580 SdHoareTripleChecker+Valid, 21505 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:45,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5580 Valid, 21505 Invalid, 3114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-24 02:16:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29768 states. [2024-10-24 02:16:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29768 to 20233. [2024-10-24 02:16:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20233 states, 18592 states have (on average 1.6249462134251291) internal successors, (30211), 18658 states have internal predecessors, (30211), 1191 states have call successors, (1191), 384 states have call predecessors, (1191), 448 states have return successors, (2048), 1254 states have call predecessors, (2048), 1191 states have call successors, (2048) [2024-10-24 02:16:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20233 states to 20233 states and 33450 transitions. [2024-10-24 02:16:46,918 INFO L78 Accepts]: Start accepts. Automaton has 20233 states and 33450 transitions. Word has length 141 [2024-10-24 02:16:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:46,919 INFO L471 AbstractCegarLoop]: Abstraction has 20233 states and 33450 transitions. [2024-10-24 02:16:46,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 20233 states and 33450 transitions. [2024-10-24 02:16:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:46,933 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:46,933 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:46,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:16:46,933 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:46,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:46,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2142805691, now seen corresponding path program 1 times [2024-10-24 02:16:46,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:46,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925137084] [2024-10-24 02:16:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:46,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:47,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:47,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:47,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:47,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:47,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:47,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:47,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925137084] [2024-10-24 02:16:47,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925137084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:47,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:47,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:47,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505566560] [2024-10-24 02:16:47,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:47,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:47,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:47,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:47,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:47,162 INFO L87 Difference]: Start difference. First operand 20233 states and 33450 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:16:52,658 INFO L93 Difference]: Finished difference Result 74518 states and 123319 transitions. [2024-10-24 02:16:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:16:52,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:16:52,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:16:52,901 INFO L225 Difference]: With dead ends: 74518 [2024-10-24 02:16:52,902 INFO L226 Difference]: Without dead ends: 56424 [2024-10-24 02:16:52,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:16:52,972 INFO L432 NwaCegarLoop]: 4354 mSDtfsCounter, 5271 mSDsluCounter, 17145 mSDsCounter, 0 mSdLazyCounter, 3588 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5287 SdHoareTripleChecker+Valid, 21499 SdHoareTripleChecker+Invalid, 3654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:16:52,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5287 Valid, 21499 Invalid, 3654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3588 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-24 02:16:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56424 states. [2024-10-24 02:16:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56424 to 37993. [2024-10-24 02:16:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37993 states, 34784 states have (on average 1.610711821527139) internal successors, (56027), 34914 states have internal predecessors, (56027), 2311 states have call successors, (2311), 768 states have call predecessors, (2311), 896 states have return successors, (4754), 2438 states have call predecessors, (4754), 2311 states have call successors, (4754) [2024-10-24 02:16:55,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37993 states to 37993 states and 63092 transitions. [2024-10-24 02:16:55,783 INFO L78 Accepts]: Start accepts. Automaton has 37993 states and 63092 transitions. Word has length 141 [2024-10-24 02:16:55,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:16:55,784 INFO L471 AbstractCegarLoop]: Abstraction has 37993 states and 63092 transitions. [2024-10-24 02:16:55,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:16:55,785 INFO L276 IsEmpty]: Start isEmpty. Operand 37993 states and 63092 transitions. [2024-10-24 02:16:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-24 02:16:55,806 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:16:55,807 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:16:55,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:16:55,807 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:16:55,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:16:55,808 INFO L85 PathProgramCache]: Analyzing trace with hash 20810883, now seen corresponding path program 1 times [2024-10-24 02:16:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:16:55,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537272383] [2024-10-24 02:16:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:16:55,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:16:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:55,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:16:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:55,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 02:16:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:55,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:16:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:56,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-24 02:16:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:56,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-24 02:16:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:16:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:16:56,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:16:56,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537272383] [2024-10-24 02:16:56,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537272383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:16:56,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:16:56,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:16:56,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048436712] [2024-10-24 02:16:56,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:16:56,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:16:56,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:16:56,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:16:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:16:56,021 INFO L87 Difference]: Start difference. First operand 37993 states and 63092 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:17:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:17:04,189 INFO L93 Difference]: Finished difference Result 144054 states and 240647 transitions. [2024-10-24 02:17:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:17:04,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2024-10-24 02:17:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:17:04,583 INFO L225 Difference]: With dead ends: 144054 [2024-10-24 02:17:04,583 INFO L226 Difference]: Without dead ends: 108200 [2024-10-24 02:17:04,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:17:04,695 INFO L432 NwaCegarLoop]: 4357 mSDtfsCounter, 5484 mSDsluCounter, 17148 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5512 SdHoareTripleChecker+Valid, 21505 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:17:04,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5512 Valid, 21505 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3021 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-24 02:17:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108200 states.